SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In

American Airlines Group Inc., et al. – ‘10-K’ for 12/31/21 – ‘EX-101.DEF’

On:  Tuesday, 2/22/22, at 8:03am ET   ·   For:  12/31/21   ·   Accession #:  6201-22-26   ·   File #s:  1-02691, 1-08400

Previous ‘10-K’:  ‘10-K’ on 2/17/21 for 12/31/20   ·   Next:  ‘10-K’ on 2/22/23 for 12/31/22   ·   Latest:  ‘10-K’ on 2/21/24 for 12/31/23   ·   69 References:   

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

  As Of               Filer                 Filing    For·On·As Docs:Size

 2/22/22  American Airlines Group Inc.      10-K       12/31/21  162:47M
          American Airlines, Inc.

Annual Report   —   Form 10-K

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   3.79M 
 2: EX-4.1      Instrument Defining the Rights of Security Holders  HTML     66K 
 3: EX-10.19    Material Contract                                   HTML     51K 
 4: EX-10.38    Material Contract                                   HTML     57K 
 5: EX-10.39    Material Contract                                   HTML    168K 
 6: EX-10.40    Material Contract                                   HTML    842K 
 7: EX-10.41    Material Contract                                   HTML    138K 
 8: EX-10.42    Material Contract                                   HTML    350K 
 9: EX-10.43    Material Contract                                   HTML    644K 
10: EX-10.44    Material Contract                                   HTML    167K 
11: EX-10.45    Material Contract                                   HTML    185K 
12: EX-10.46    Material Contract                                   HTML    128K 
13: EX-10.47    Material Contract                                   HTML    220K 
14: EX-10.69    Material Contract                                   HTML   1.50M 
15: EX-10.70    Material Contract                                   HTML    453K 
16: EX-10.71    Material Contract                                   HTML    423K 
17: EX-10.72    Material Contract                                   HTML     83K 
18: EX-10.73    Material Contract                                   HTML     58K 
19: EX-10.74    Material Contract                                   HTML    343K 
20: EX-10.75    Material Contract                                   HTML    362K 
21: EX-10.76    Material Contract                                   HTML    371K 
22: EX-10.77    Material Contract                                   HTML     95K 
23: EX-10.92    Material Contract                                   HTML     92K 
24: EX-10.93    Material Contract                                   HTML     52K 
25: EX-10.94    Material Contract                                   HTML    100K 
26: EX-10.95    Material Contract                                   HTML     57K 
27: EX-21.1     Subsidiaries List                                   HTML     48K 
28: EX-23.1     Consent of Expert or Counsel                        HTML     42K 
29: EX-31.1     Certification -- §302 - SOA'02                      HTML     45K 
30: EX-31.2     Certification -- §302 - SOA'02                      HTML     46K 
31: EX-31.3     Certification -- §302 - SOA'02                      HTML     46K 
32: EX-31.4     Certification -- §302 - SOA'02                      HTML     46K 
33: EX-32.1     Certification -- §906 - SOA'02                      HTML     43K 
34: EX-32.2     Certification -- §906 - SOA'02                      HTML     43K 
40: R1          Cover                                               HTML    119K 
41: R2          Audit Information                                   HTML     49K 
42: R3          Consolidated Statements of Operations - American    HTML    136K 
                Airlines Group Inc.                                              
43: R4          Consolidated Statements of Operations - American    HTML    125K 
                Airlines, Inc.                                                   
44: R5          Consolidated Statements of Comprehensive Income     HTML     68K 
                (Loss) - American Airlines Group Inc.                            
45: R6          Consolidated Statements of Comprehensive Income     HTML     70K 
                (Loss) - American Airlines, Inc.                                 
46: R7          Consolidated Balance Sheets - American Airlines     HTML    186K 
                Group Inc.                                                       
47: R8          Consolidated Balance Sheets - American Airlines     HTML     52K 
                Group Inc. (Parenthetical)                                       
48: R9          Consolidated Balance Sheets - American Airlines,    HTML    204K 
                Inc.                                                             
49: R10         Consolidated Balance Sheets - American Airlines,    HTML     53K 
                Inc. (Parenthetical)                                             
50: R11         Consolidated Statements of Cash Flows - American    HTML    160K 
                Airlines Group Inc.                                              
51: R12         Consolidated Statements of Cash Flows - American    HTML     58K 
                Airlines Group Inc. (Parenthetical)                              
52: R13         Consolidated Statements of Cash Flows - American    HTML    187K 
                Airlines, Inc.                                                   
53: R14         Consolidated Statements of Cash Flows - American    HTML     65K 
                Airlines, Inc. (Parenthetical)                                   
54: R15         Consolidated Statements of Stockholders' Equity     HTML    130K 
                (Deficit) - American Airlines Group Inc.                         
55: R16         Consolidated Statements of Stockholders' Equity     HTML     57K 
                (Deficit) - American Airlines Group Inc.                         
                (Parenthetical)                                                  
56: R17         Consolidated Statements of Stockholders' Equity     HTML     76K 
                (Deficit) - American Airlines, Inc.                              
57: R18         Basis of Presentation and Summary of Significant    HTML    315K 
                Accounting Policies                                              
58: R19         Special Items, Net                                  HTML    122K 
59: R20         Earnings (Loss) Per Common Share                    HTML     71K 
60: R21         Debt                                                HTML    313K 
61: R22         Leases                                              HTML    302K 
62: R23         Income Taxes                                        HTML    151K 
63: R24         Risk Management                                     HTML     58K 
64: R25         Fair Value Measurements and Other Investments       HTML    162K 
65: R26         Employee Benefit Plans                              HTML    594K 
66: R27         Accumulated Other Comprehensive Loss                HTML    107K 
67: R28         Commitments, Contingencies and Guarantees           HTML    143K 
68: R29         Supplemental Cash Flow Information                  HTML     67K 
69: R30         Operating Segments and Related Disclosures          HTML     52K 
70: R31         Share-based Compensation                            HTML     81K 
71: R32         Valuation and Qualifying Accounts                   HTML     75K 
72: R33         Transactions with Related Parties                   HTML     54K 
73: R34         Subsequent Event                                    HTML     47K 
74: R35         Basis of Presentation and Summary of Significant    HTML    189K 
                Accounting Policies (Policies)                                   
75: R36         Basis of Presentation and Summary of Significant    HTML    170K 
                Accounting Policies (Tables)                                     
76: R37         Special Items, Net (Tables)                         HTML    121K 
77: R38         Earnings (Loss) Per Common Share (Tables)           HTML     73K 
78: R39         Debt (Tables)                                       HTML    190K 
79: R40         Leases (Tables)                                     HTML    202K 
80: R41         Income Taxes (Tables)                               HTML    145K 
81: R42         Fair Value Measurements and Other Investments       HTML    146K 
                (Tables)                                                         
82: R43         Employee Benefit Plans (Tables)                     HTML    592K 
83: R44         Accumulated Other Comprehensive Loss (Tables)       HTML    108K 
84: R45         Commitments, Contingencies and Guarantees (Tables)  HTML     87K 
85: R46         Supplemental Cash Flow Information (Tables)         HTML     66K 
86: R47         Share-based Compensation (Tables)                   HTML     76K 
87: R48         Valuation and Qualifying Accounts (Tables)          HTML     75K 
88: R49         Transactions with Related Parties (Tables)          HTML     52K 
89: R50         Basis of Presentation and Summary of Significant    HTML    384K 
                Accounting Policies - Additional Information                     
                (Details)                                                        
90: R51         Basis of Presentation and Summary of Significant    HTML     89K 
                Accounting Policies - Operating Property and                     
                Equipment (Detail)                                               
91: R52         Basis of Presentation and Summary of Significant    HTML     71K 
                Accounting Policies - Definite-Lived Intangible                  
                Assets (Detail)                                                  
92: R53         Basis of Presentation and Summary of Significant    HTML     62K 
                Accounting Policies - Definite-Lived Intangible                  
                Assets Amortization Expense (Detail)                             
93: R54         Basis of Presentation and Summary of Significant    HTML     77K 
                Accounting Policies - Significant Categories of                  
                Reported Operating Revenues (Details)                            
94: R55         Basis of Presentation and Summary of Significant    HTML     66K 
                Accounting Policies - Passenger Revenue by                       
                Geographic Region (Details)                                      
95: R56         Basis of Presentation and Summary of Significant    HTML     52K 
                Accounting Policies - Significant Contract                       
                Liabilities (Details)                                            
96: R57         Basis of Presentation and Summary of Significant    HTML     60K 
                Accounting Policies - Changes in Loyalty Program                 
                Liability (Details)                                              
97: R58         Basis of Presentation and Summary of Significant    HTML     62K 
                Accounting Policies - Regional Expenses (Detail)                 
98: R59         Special Items, Net (Details)                        HTML     91K 
99: R60         Earnings (Loss) Per Common Share (Details)          HTML    100K 
100: R61         Debt - Components of Long-Term Debt (Details)       HTML    169K  
101: R62         Debt - Summary of Availability under Revolving      HTML     67K  
                Credit Facilities (Details)                                      
102: R63         Debt - Schedule of Maturities of Long-Term Debt     HTML     66K  
                (Details)                                                        
103: R64         Debt - 2013, 2014 and 2016 Credit Facilities        HTML    165K  
                (Details)                                                        
104: R65         Debt - 11.75% Secured Senior Notes (Details)        HTML     60K  
105: R66         Debt - 10.75% Senior Secured Notes (Details)        HTML     68K  
106: R67         Debt - Treasury Loan Agreement (Details)            HTML     52K  
107: R68         Debt - AAdvantage Financing (Details)               HTML     93K  
108: R69         Debt - EETCs (Details)                              HTML     56K  
109: R70         Debt - EETCs - Certain Information (Details)        HTML     54K  
110: R71         Debt - Special Facility Revenue Bonds (Details)     HTML     84K  
111: R72         Debt - PSP Promissory Note (Details)                HTML     71K  
112: R73         Debt - 6.50% Convertible Senior Notes (Details)     HTML    101K  
113: R74         Debt - Unsecured Senior Notes (Details)             HTML     55K  
114: R75         Debt - Guarantees (Details)                         HTML     67K  
115: R76         Debt - Collateral-Related Covenants (Details)       HTML     62K  
116: R77         Leases - Additional Information (Details)           HTML     74K  
117: R78         Leases - Components of Lease Expense (Details)      HTML     59K  
118: R79         Leases - Supplemental Balance Sheet Information     HTML     93K  
                (Details)                                                        
119: R80         Leases - Supplemental Cash Flow and Other           HTML     64K  
                Information (Details)                                            
120: R81         Leases - Maturities of Lease Liabilities (Details)  HTML    100K  
121: R82         Income Taxes - Components of Income Tax Provision   HTML     69K  
                (Benefit) (Details)                                              
122: R83         Income Taxes - Reconciliation of Income Tax         HTML     64K  
                Provision (Details)                                              
123: R84         Income Taxes - Deferred Tax Assets and Liabilities  HTML     85K  
                (Details)                                                        
124: R85         Income Taxes - Additional Disclosures (Details)     HTML     66K  
125: R86         Risk Management (Details)                           HTML     49K  
126: R87         Fair Value Measurements and Other Investments -     HTML    116K  
                Summary of Assets Measured at Fair Value on                      
                Recurring Basis (Details)                                        
127: R88         Fair Value Measurements and Other Investments -     HTML     58K  
                Schedule of Carrying Value and Estimated Fair                    
                Value of Long-Term Debt, Including Current                       
                Maturities (Details)                                             
128: R89         Fair Value Measurements and Other Investments -     HTML     86K  
                Other Investments (Details)                                      
129: R90         Employee Benefit Plans - Additional Information     HTML     51K  
                (Details)                                                        
130: R91         Employee Benefit Plans - Schedule of Changes in     HTML     85K  
                Projected Benefit Obligations (Details)                          
131: R92         Employee Benefit Plans - Schedule of Changes in     HTML     85K  
                Fair Value of Plan Assets (Details)                              
132: R93         Employee Benefit Plans - Schedule of Amounts        HTML     62K  
                Recognized in Consolidated Balance Sheets                        
                (Details)                                                        
133: R94         Employee Benefit Plans - Schedule of Amounts        HTML     59K  
                Recognized in Other Comprehensive Income (Details)               
134: R95         Employee Benefit Plans - Schedule of Accumulated    HTML     60K  
                Benefit Obligations Exceeding Fair Value of Plan                 
                Assets (Details)                                                 
135: R96         Employee Benefit Plans - Components of Net          HTML     85K  
                Periodic Benefit Cost (Income) (Details)                         
136: R97         Employee Benefit Plans - Schedule of Assumption     HTML     70K  
                Used to Determine Benefit Obligations (Details)                  
137: R98         Employee Benefit Plans - Schedule of Expected       HTML     65K  
                Future Service Benefit Payments (Details)                        
138: R99         Employee Benefit Plans - Schedule of Allocation of  HTML    113K  
                Plan Assets (Details)                                            
139: R100        Employee Benefit Plans - Schedule of Fair Value of  HTML    250K  
                Pension Plan Assets by Asset Category (Details)                  
140: R101        Employee Benefit Plans - Schedule of Fair Value of  HTML    151K  
                Pension Plan Assets by Asset Category - Additional               
                Information (Details)                                            
141: R102        Employee Benefit Plans - Changes in Fair Value      HTML     62K  
                Measurements of Level 3 Investments (Details)                    
142: R103        Employee Benefit Plans - Fair Values of Retiree     HTML     94K  
                Medical and Other Postretirement Benefit Plans                   
                Assets by Asset Category (Details)                               
143: R104        Employee Benefit Plans - Defined Contribution and   HTML     65K  
                Multiemployer Plans (Details)                                    
144: R105        Employee Benefit Plans - Profit Sharing Program     HTML     47K  
                (Details)                                                        
145: R106        Accumulated Other Comprehensive Loss - Components   HTML     98K  
                of Accumulated Other Comprehensive Loss (Aoci)                   
                (Details)                                                        
146: R107        Accumulated Other Comprehensive Loss -              HTML     53K  
                Reclassifications out of AOCI (Details)                          
147: R108        Commitments, Contingencies and Guarantees -         HTML    112K  
                Aircraft, Engine and Other Purchase Commitments                  
                (Details)                                                        
148: R109        Commitments, Contingencies and Guarantees -         HTML     59K  
                Capacity Purchase Agreements (Details)                           
149: R110        Commitments, Contingencies and Guarantees -         HTML    179K  
                Additional Information (Details)                                 
150: R111        Supplemental Cash Flow Information (Details)        HTML     58K  
151: R112        Operating Segments and Related Disclosures          HTML     46K  
                (Details)                                                        
152: R113        Share Based Compensation - Additional Information   HTML     58K  
                (Details)                                                        
153: R114        Share Based Compensation - Restricted Stock Unit    HTML     88K  
                Awards (Details)                                                 
154: R115        Valuation and Qualifying Accounts (Details)         HTML     59K  
155: R116        Transactions with Related Parties - Net             HTML     49K  
                Receivables (Payables) to Related Parties                        
                (Details)                                                        
156: R117        Transactions with Related Parties - Additional      HTML     48K  
                Information (Details)                                            
157: R118        Subsequent Event (Details)                          HTML     56K  
160: XML         IDEA XML File -- Filing Summary                      XML    267K  
158: XML         XBRL Instance -- aal-20211231_htm                    XML   9.69M  
159: EXCEL       IDEA Workbook of Financial Reports                  XLSX    246K  
36: EX-101.CAL  XBRL Calculations -- aal-20211231_cal                XML    363K 
37: EX-101.DEF  XBRL Definitions -- aal-20211231_def                 XML   2.77M 
38: EX-101.LAB  XBRL Labels -- aal-20211231_lab                      XML   3.25M 
39: EX-101.PRE  XBRL Presentations -- aal-20211231_pre               XML   2.86M 
35: EX-101.SCH  XBRL Schema -- aal-20211231                          XSD    378K 
161: JSON        XBRL Instance as JSON Data -- MetaLinks              718±  1.10M  
162: ZIP         XBRL Zipped Folder -- 0000006201-22-000026-xbrl      Zip   1.68M

‘EX-101.DEF’   —   XBRL Definitions — aal-20211231_def

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL Document Created with Wdesk from Workiva -->
<!-- Copyright 2022 Workiva -->
<!-- r:bebff991-ba41-4005-937a-a7c241b83818,g:efdd3df5-43d6-406a-bc90-a2ad4ed2debe -->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
<link:roleRef roleURI="http://www.aa.com/role/Cover" xlink:type="simple" xlink:href="aal-20211231.xsd#Cover"/>
<link:definitionLink xlink:role="http://www.aa.com/role/Cover" xlink:type="extended" id="i269618cb64c74b2ba5e9fc8e94d34037_Cover">
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentInformationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_f950dee8-9979-4921-97d5-018acc7a376b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentType"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_DocumentType_f950dee8-9979-4921-97d5-018acc7a376b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_b0d8dfbe-7e34-452c-928a-fa4f091ae916" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AmendmentFlag"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_AmendmentFlag_b0d8dfbe-7e34-452c-928a-fa4f091ae916" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentAnnualReport_ed8988a4-1126-4424-96d8-15b4759cab92" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentAnnualReport"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_DocumentAnnualReport_ed8988a4-1126-4424-96d8-15b4759cab92" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_fe8921a8-bfa2-4267-a175-284a63f720e2" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentPeriodEndDate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_DocumentPeriodEndDate_fe8921a8-bfa2-4267-a175-284a63f720e2" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport_6cf56203-13f6-4a4b-b5c1-a5fc889d43ca" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentTransitionReport"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_DocumentTransitionReport_6cf56203-13f6-4a4b-b5c1-a5fc889d43ca" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_88af98cb-52e4-4ff2-990d-773a53fa509c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityFileNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityFileNumber_88af98cb-52e4-4ff2-990d-773a53fa509c" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_d31c3394-3849-4744-af7b-1f1017ec19db" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityRegistrantName"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityRegistrantName_d31c3394-3849-4744-af7b-1f1017ec19db" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_7d3186eb-8028-4ff6-8513-ec3403642423" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityCentralIndexKey"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityCentralIndexKey_7d3186eb-8028-4ff6-8513-ec3403642423" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate_9362a0bf-b04a-4e0b-ba0d-feefe187a54c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_CurrentFiscalYearEndDate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_CurrentFiscalYearEndDate_9362a0bf-b04a-4e0b-ba0d-feefe187a54c" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalYearFocus_f3ee553a-d2e2-46dd-88d6-a3023af7648b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentFiscalYearFocus"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_DocumentFiscalYearFocus_f3ee553a-d2e2-46dd-88d6-a3023af7648b" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus_ae6d9d5a-a2d1-4b76-898b-3cbb8ba1d1f0" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentFiscalPeriodFocus"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_DocumentFiscalPeriodFocus_ae6d9d5a-a2d1-4b76-898b-3cbb8ba1d1f0" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_0fd0a393-fabb-4e57-b7d7-730eb0d38688" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityIncorporationStateCountryCode"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityIncorporationStateCountryCode_0fd0a393-fabb-4e57-b7d7-730eb0d38688" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_82a7fc3b-7b80-491c-893d-8c988a26acca" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityTaxIdentificationNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityTaxIdentificationNumber_82a7fc3b-7b80-491c-893d-8c988a26acca" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_7096986b-fd9b-4e78-9fd1-6808036b29d2" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressAddressLine1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityAddressAddressLine1_7096986b-fd9b-4e78-9fd1-6808036b29d2" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_a30ded7b-7b06-4211-81d4-71ced703cde4" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressCityOrTown"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityAddressCityOrTown_a30ded7b-7b06-4211-81d4-71ced703cde4" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_b3ab52b9-eb6f-4040-9749-86ab87905cc2" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressStateOrProvince"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityAddressStateOrProvince_b3ab52b9-eb6f-4040-9749-86ab87905cc2" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_207428a9-30f5-476c-ae62-ffccc76c252e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressPostalZipCode"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityAddressPostalZipCode_207428a9-30f5-476c-ae62-ffccc76c252e" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_a6a00d1a-cb2f-4891-b6ee-b95bbc2adb55" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_CityAreaCode"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_CityAreaCode_a6a00d1a-cb2f-4891-b6ee-b95bbc2adb55" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_de4443bf-304b-4b6e-bb7f-27ac3a850f3e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LocalPhoneNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_LocalPhoneNumber_de4443bf-304b-4b6e-bb7f-27ac3a850f3e" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_0a9e6323-c558-4f6b-bfcd-55f3c1578a6e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_Security12bTitle"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_Security12bTitle_0a9e6323-c558-4f6b-bfcd-55f3c1578a6e" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_1d8dc695-71d8-41b8-92ea-c5c364af0261" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_TradingSymbol"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_TradingSymbol_1d8dc695-71d8-41b8-92ea-c5c364af0261" xlink:type="arc" order="20"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_25df7da1-ab3d-4aba-9e7c-cd49f3a37eb7" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_SecurityExchangeName"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_SecurityExchangeName_25df7da1-ab3d-4aba-9e7c-cd49f3a37eb7" xlink:type="arc" order="21"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_433393b9-25f6-4306-a7bc-1a5546656029" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityWellKnownSeasonedIssuer"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_433393b9-25f6-4306-a7bc-1a5546656029" xlink:type="arc" order="22"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityVoluntaryFilers_bc05f84d-a550-4a05-bb16-c7a2f8ca6be1" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityVoluntaryFilers"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityVoluntaryFilers_bc05f84d-a550-4a05-bb16-c7a2f8ca6be1" xlink:type="arc" order="23"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus_b8e20dd0-b234-4031-888a-7cb9cca37dcb" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityCurrentReportingStatus"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityCurrentReportingStatus_b8e20dd0-b234-4031-888a-7cb9cca37dcb" xlink:type="arc" order="24"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent_4c85e336-7cdd-445b-8e77-2cd74a10807a" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityInteractiveDataCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityInteractiveDataCurrent_4c85e336-7cdd-445b-8e77-2cd74a10807a" xlink:type="arc" order="25"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory_8d03f0ef-3131-4407-82f7-a3ab95bf6f19" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityFilerCategory"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityFilerCategory_8d03f0ef-3131-4407-82f7-a3ab95bf6f19" xlink:type="arc" order="26"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntitySmallBusiness_62b408b1-836a-4e8e-b5d1-6c84150f7538" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntitySmallBusiness"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntitySmallBusiness_62b408b1-836a-4e8e-b5d1-6c84150f7538" xlink:type="arc" order="27"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_a50fd796-70e7-4e33-a630-346ae83cfad9" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityEmergingGrowthCompany"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityEmergingGrowthCompany_a50fd796-70e7-4e33-a630-346ae83cfad9" xlink:type="arc" order="28"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityShellCompany_213cf18c-dc67-43f7-a2cf-fcc2b0dcc7e1" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityShellCompany"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityShellCompany_213cf18c-dc67-43f7-a2cf-fcc2b0dcc7e1" xlink:type="arc" order="29"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_IcfrAuditorAttestationFlag_651e86cb-9200-4dd1-9957-c5f84a58aca8" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_IcfrAuditorAttestationFlag"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_IcfrAuditorAttestationFlag_651e86cb-9200-4dd1-9957-c5f84a58aca8" xlink:type="arc" order="30"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_cff23246-a1a1-4613-9070-0dff1bec4620" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityCommonStockSharesOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_cff23246-a1a1-4613-9070-0dff1bec4620" xlink:type="arc" order="31"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityPublicFloat_7b3c07a5-b1cc-43a6-881e-94b7efe73a03" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityPublicFloat"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_EntityPublicFloat_7b3c07a5-b1cc-43a6-881e-94b7efe73a03" xlink:type="arc" order="32"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentsIncorporatedByReferenceTextBlock_b55dafea-1871-47f0-930a-dc5bb320f883" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentsIncorporatedByReferenceTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_DocumentsIncorporatedByReferenceTextBlock_b55dafea-1871-47f0-930a-dc5bb320f883" xlink:type="arc" order="33"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable_f8a2a83c-e369-4d13-ab96-1f6f65065ced" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentInformationTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_DocumentInformationLineItems_92fb08c8-6cc0-42c0-ba4a-7af872166618" xlink:to="loc_dei_DocumentInformationTable_f8a2a83c-e369-4d13-ab96-1f6f65065ced" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_72582404-d012-497a-ac50-9a984de01238" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_f8a2a83c-e369-4d13-ab96-1f6f65065ced" xlink:to="loc_dei_LegalEntityAxis_72582404-d012-497a-ac50-9a984de01238" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_72582404-d012-497a-ac50-9a984de01238_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_72582404-d012-497a-ac50-9a984de01238" xlink:to="loc_dei_EntityDomain_72582404-d012-497a-ac50-9a984de01238_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2b8de6e6-b635-4863-a614-dd4aa3491ee4" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_72582404-d012-497a-ac50-9a984de01238" xlink:to="loc_dei_EntityDomain_2b8de6e6-b635-4863-a614-dd4aa3491ee4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_267b0da2-8db0-4c16-98a6-8800f76e3641" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2b8de6e6-b635-4863-a614-dd4aa3491ee4" xlink:to="loc_aal_AmericanAirlinesIncMember_267b0da2-8db0-4c16-98a6-8800f76e3641" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementClassOfStockAxis_07eaf0fa-1228-48c2-a61f-b00495ca49bd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementClassOfStockAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_DocumentInformationTable_f8a2a83c-e369-4d13-ab96-1f6f65065ced" xlink:to="loc_us-gaap_StatementClassOfStockAxis_07eaf0fa-1228-48c2-a61f-b00495ca49bd" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_07eaf0fa-1228-48c2-a61f-b00495ca49bd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfStockDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementClassOfStockAxis_07eaf0fa-1228-48c2-a61f-b00495ca49bd" xlink:to="loc_us-gaap_ClassOfStockDomain_07eaf0fa-1228-48c2-a61f-b00495ca49bd_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockDomain_0651b953-3ad3-48dd-855c-bac5c6fcdd99" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfStockDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementClassOfStockAxis_07eaf0fa-1228-48c2-a61f-b00495ca49bd" xlink:to="loc_us-gaap_ClassOfStockDomain_0651b953-3ad3-48dd-855c-bac5c6fcdd99" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_1af7c6ae-cdb1-4d3b-906c-fe84704530d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_0651b953-3ad3-48dd-855c-bac5c6fcdd99" xlink:to="loc_us-gaap_CommonStockMember_1af7c6ae-cdb1-4d3b-906c-fe84704530d4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_83767086-0e7e-45f8-9464-325e4e42add2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WarrantMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockDomain_0651b953-3ad3-48dd-855c-bac5c6fcdd99" xlink:to="loc_us-gaap_WarrantMember_83767086-0e7e-45f8-9464-325e4e42add2" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/AuditInformation" xlink:type="simple" xlink:href="aal-20211231.xsd#AuditInformation"/>
<link:definitionLink xlink:role="http://www.aa.com/role/AuditInformation" xlink:type="extended" id="i75b4294f91a543cf8e50809b842d93c2_AuditInformation">
<link:loc xlink:type="locator" xlink:label="loc_dei_AuditorLineItems_e4fbf150-c46c-4cef-beee-9c590c246d20" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_AuditorName_08f4eada-0095-4640-ba3a-60da0175b59a" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorName"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_AuditorLineItems_e4fbf150-c46c-4cef-beee-9c590c246d20" xlink:to="loc_dei_AuditorName_08f4eada-0095-4640-ba3a-60da0175b59a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_AuditorLocation_b1ab74c8-541b-43fb-8bf2-d7532a41a1b8" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorLocation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_AuditorLineItems_e4fbf150-c46c-4cef-beee-9c590c246d20" xlink:to="loc_dei_AuditorLocation_b1ab74c8-541b-43fb-8bf2-d7532a41a1b8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_AuditorFirmId_402eb631-b6bb-40d4-ac2f-757ee390c804" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorFirmId"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_AuditorLineItems_e4fbf150-c46c-4cef-beee-9c590c246d20" xlink:to="loc_dei_AuditorFirmId_402eb631-b6bb-40d4-ac2f-757ee390c804" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_AuditorTable_26e608c5-da34-4565-939f-e6d1f8e79fc7" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AuditorTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_dei_AuditorLineItems_e4fbf150-c46c-4cef-beee-9c590c246d20" xlink:to="loc_dei_AuditorTable_26e608c5-da34-4565-939f-e6d1f8e79fc7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5086421f-9287-4f88-8b9a-3756c4be0d0e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_dei_AuditorTable_26e608c5-da34-4565-939f-e6d1f8e79fc7" xlink:to="loc_dei_LegalEntityAxis_5086421f-9287-4f88-8b9a-3756c4be0d0e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5086421f-9287-4f88-8b9a-3756c4be0d0e_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5086421f-9287-4f88-8b9a-3756c4be0d0e" xlink:to="loc_dei_EntityDomain_5086421f-9287-4f88-8b9a-3756c4be0d0e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4f87331b-d210-4c54-b5e0-02bff23d8baf" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5086421f-9287-4f88-8b9a-3756c4be0d0e" xlink:to="loc_dei_EntityDomain_4f87331b-d210-4c54-b5e0-02bff23d8baf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_5d685027-37d4-41a4-a6e4-c5ee54f38857" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4f87331b-d210-4c54-b5e0-02bff23d8baf" xlink:to="loc_aal_AmericanAirlinesIncMember_5d685027-37d4-41a4-a6e4-c5ee54f38857" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedStatementsofOperationsAmericanAirlinesGroupInc" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedStatementsofOperationsAmericanAirlinesGroupInc"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedStatementsofOperationsAmericanAirlinesGroupInc" xlink:type="extended" id="i08322fa832dc44719632329da677442a_ConsolidatedStatementsofOperationsAmericanAirlinesGroupInc">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_0b2ed0bb-ea47-4dbf-9b16-0d01901f9537" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenuesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_RevenuesAbstract_0b2ed0bb-ea47-4dbf-9b16-0d01901f9537" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_0eccd589-838e-4af3-b136-54220b91dc69" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_0b2ed0bb-ea47-4dbf-9b16-0d01901f9537" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_0eccd589-838e-4af3-b136-54220b91dc69" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostsAndExpensesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FuelCosts_e0820d21-9bc7-4091-97b1-9483841a6193" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FuelCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_FuelCosts_e0820d21-9bc7-4091-97b1-9483841a6193" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_3280b372-e6fb-4f0d-9f43-a213072ebb67" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LaborAndRelatedExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_LaborAndRelatedExpense_3280b372-e6fb-4f0d-9f43-a213072ebb67" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineCapacityPurchaseArrangements_d9612832-1da6-46ea-91cd-50e626d0f414" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineCapacityPurchaseArrangements"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_AirlineCapacityPurchaseArrangements_d9612832-1da6-46ea-91cd-50e626d0f414" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AircraftMaintenanceMaterialsAndRepairs_0ba4e5ba-c170-4aae-8cf8-623f8bea5c66" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AircraftMaintenanceMaterialsAndRepairs"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_AircraftMaintenanceMaterialsAndRepairs_0ba4e5ba-c170-4aae-8cf8-623f8bea5c66" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandingFeesAndOtherRentals_bb513ea8-6803-4179-a2f9-70b2c9019d44" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LandingFeesAndOtherRentals"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_LandingFeesAndOtherRentals_bb513ea8-6803-4179-a2f9-70b2c9019d44" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AircraftRental_7c68a462-8d27-4c34-ad02-ed48eabdde9f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AircraftRental"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_AircraftRental_7c68a462-8d27-4c34-ad02-ed48eabdde9f" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_903d7b46-0ffe-4761-bf7e-9be49c6b46f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SellingAndMarketingExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_SellingAndMarketingExpense_903d7b46-0ffe-4761-bf7e-9be49c6b46f1" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_cfa01709-e4fc-4e38-b083-ed74b1500044" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_DepreciationAndAmortization_cfa01709-e4fc-4e38-b083-ed74b1500044" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RestructuringAndOtherExpenseIncomeMainline_ae954396-1234-4acb-bc13-12b144c794be" xlink:href="aal-20211231.xsd#aal_RestructuringAndOtherExpenseIncomeMainline"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_aal_RestructuringAndOtherExpenseIncomeMainline_ae954396-1234-4acb-bc13-12b144c794be" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_1502bd12-3c2e-4629-bde3-46c7fd71563f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherCostAndExpenseOperating"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_1502bd12-3c2e-4629-bde3-46c7fd71563f" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_6f0f96ea-e29b-4d6a-b623-b5b6ae65f248" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostsAndExpenses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_346d6c30-34b1-4ffc-8407-2b6b9d7c3860" xlink:to="loc_us-gaap_CostsAndExpenses_6f0f96ea-e29b-4d6a-b623-b5b6ae65f248" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_9a736718-240d-4f38-8ae8-2b510d4b48ce" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_OperatingIncomeLoss_9a736718-240d-4f38-8ae8-2b510d4b48ce" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8751bcdc-b264-4d48-9bb8-25b67e39e43d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8751bcdc-b264-4d48-9bb8-25b67e39e43d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_67716858-983b-4fc2-b755-be95f2713b34" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentIncomeInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8751bcdc-b264-4d48-9bb8-25b67e39e43d" xlink:to="loc_us-gaap_InvestmentIncomeInterest_67716858-983b-4fc2-b755-be95f2713b34" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_3ecfa564-7fb2-4539-addd-258463b87a29" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8751bcdc-b264-4d48-9bb8-25b67e39e43d" xlink:to="loc_us-gaap_InterestExpense_3ecfa564-7fb2-4539-addd-258463b87a29" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_9b5c2e7c-b932-4aa6-b7af-b879c08f55c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8751bcdc-b264-4d48-9bb8-25b67e39e43d" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_9b5c2e7c-b932-4aa6-b7af-b879c08f55c7" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_397e0f77-9f7f-464c-bb84-9654a7d35e97" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NonoperatingIncomeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_8751bcdc-b264-4d48-9bb8-25b67e39e43d" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_397e0f77-9f7f-464c-bb84-9654a7d35e97" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_394accf6-ccea-4ec1-80b8-5e40b9361629" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_394accf6-ccea-4ec1-80b8-5e40b9361629" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_ab3de820-4427-4427-bdad-d95f088c0740" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_ab3de820-4427-4427-bdad-d95f088c0740" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_2ee91d3f-7385-4d1a-a5ff-326f1bced5f5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_NetIncomeLoss_2ee91d3f-7385-4d1a-a5ff-326f1bced5f5" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareAbstract_7b0a239d-d7d5-44c7-be4a-a8b8c03520d0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_EarningsPerShareAbstract_7b0a239d-d7d5-44c7-be4a-a8b8c03520d0" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_c753fd88-51f7-4db1-9f0e-7148f091e3c8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareBasic"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_7b0a239d-d7d5-44c7-be4a-a8b8c03520d0" xlink:to="loc_us-gaap_EarningsPerShareBasic_c753fd88-51f7-4db1-9f0e-7148f091e3c8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_7cee40cf-d4e3-4c36-a2c9-a7e5c5e36456" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EarningsPerShareDiluted"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareAbstract_7b0a239d-d7d5-44c7-be4a-a8b8c03520d0" xlink:to="loc_us-gaap_EarningsPerShareDiluted_7cee40cf-d4e3-4c36-a2c9-a7e5c5e36456" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_21f36fb2-04c9-46cf-81a1-32f8880c55cf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_21f36fb2-04c9-46cf-81a1-32f8880c55cf" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_29ea3940-1319-40e9-9919-2e68711d34f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_21f36fb2-04c9-46cf-81a1-32f8880c55cf" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_29ea3940-1319-40e9-9919-2e68711d34f1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_49ada6bc-0aac-4522-87a5-ab12e8614deb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_21f36fb2-04c9-46cf-81a1-32f8880c55cf" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_49ada6bc-0aac-4522-87a5-ab12e8614deb" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_8cc7f88a-cb1f-4fed-8141-ab9da16ae76f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_8cc7f88a-cb1f-4fed-8141-ab9da16ae76f" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_d3fa4e45-0009-4322-89a2-826045384c2a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_476144f4-0741-47eb-bcb7-0fed9dcf2f88" xlink:to="loc_us-gaap_StatementTable_d3fa4e45-0009-4322-89a2-826045384c2a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_18fc3eca-9ddb-4e8f-a8cf-f370e1f63a3b" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_d3fa4e45-0009-4322-89a2-826045384c2a" xlink:to="loc_srt_ProductOrServiceAxis_18fc3eca-9ddb-4e8f-a8cf-f370e1f63a3b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_18fc3eca-9ddb-4e8f-a8cf-f370e1f63a3b_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_18fc3eca-9ddb-4e8f-a8cf-f370e1f63a3b" xlink:to="loc_srt_ProductsAndServicesDomain_18fc3eca-9ddb-4e8f-a8cf-f370e1f63a3b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_0e62ebc0-a454-4959-93aa-79a36d6d3621" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_18fc3eca-9ddb-4e8f-a8cf-f370e1f63a3b" xlink:to="loc_srt_ProductsAndServicesDomain_0e62ebc0-a454-4959-93aa-79a36d6d3621" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PassengerMember_586107b9-22e4-4887-bae1-797a6d132181" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PassengerMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0e62ebc0-a454-4959-93aa-79a36d6d3621" xlink:to="loc_us-gaap_PassengerMember_586107b9-22e4-4887-bae1-797a6d132181" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CargoAndFreightMember_f07ad547-82fb-48da-8272-7f0e6d355002" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CargoAndFreightMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0e62ebc0-a454-4959-93aa-79a36d6d3621" xlink:to="loc_us-gaap_CargoAndFreightMember_f07ad547-82fb-48da-8272-7f0e6d355002" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_5034a0c2-41c7-43fe-a8fe-3a37fe4d5730" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProductAndServiceOtherMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0e62ebc0-a454-4959-93aa-79a36d6d3621" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_5034a0c2-41c7-43fe-a8fe-3a37fe4d5730" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedStatementsofOperationsAmericanAirlinesInc" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedStatementsofOperationsAmericanAirlinesInc"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedStatementsofOperationsAmericanAirlinesInc" xlink:type="extended" id="iaf665283ff854010be62f4d48e706616_ConsolidatedStatementsofOperationsAmericanAirlinesInc">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_d2d715aa-54bb-4557-bb0f-2038ae738da4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesAbstract_6d31ec06-73f9-41f0-945b-e3bab5b192c0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenuesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d2d715aa-54bb-4557-bb0f-2038ae738da4" xlink:to="loc_us-gaap_RevenuesAbstract_6d31ec06-73f9-41f0-945b-e3bab5b192c0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_f2e66925-1062-49cc-b6f6-5815e8e17590" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_6d31ec06-73f9-41f0-945b-e3bab5b192c0" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_f2e66925-1062-49cc-b6f6-5815e8e17590" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostsAndExpensesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d2d715aa-54bb-4557-bb0f-2038ae738da4" xlink:to="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FuelCosts_ae2665c9-0c36-4e1b-ad4e-e4fd91f79e4a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FuelCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_FuelCosts_ae2665c9-0c36-4e1b-ad4e-e4fd91f79e4a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LaborAndRelatedExpense_8a5d64e6-a9c1-47a5-887b-25ebfe2595d8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LaborAndRelatedExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_LaborAndRelatedExpense_8a5d64e6-a9c1-47a5-887b-25ebfe2595d8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineCapacityPurchaseArrangements_5655501c-ec8e-4012-a486-222dc9e75f81" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineCapacityPurchaseArrangements"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_AirlineCapacityPurchaseArrangements_5655501c-ec8e-4012-a486-222dc9e75f81" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AircraftMaintenanceMaterialsAndRepairs_a9e2f4f2-f192-4f18-96ec-1c36795f1866" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AircraftMaintenanceMaterialsAndRepairs"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_AircraftMaintenanceMaterialsAndRepairs_a9e2f4f2-f192-4f18-96ec-1c36795f1866" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandingFeesAndOtherRentals_3cd1cec6-25ae-4cfb-930d-066450826574" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LandingFeesAndOtherRentals"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_LandingFeesAndOtherRentals_3cd1cec6-25ae-4cfb-930d-066450826574" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AircraftRental_7133d4c0-ecd7-4664-9c34-ed94c2287b84" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AircraftRental"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_AircraftRental_7133d4c0-ecd7-4664-9c34-ed94c2287b84" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpense_8e5a76cf-fd7d-42e7-8306-c8396ac37165" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SellingAndMarketingExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_SellingAndMarketingExpense_8e5a76cf-fd7d-42e7-8306-c8396ac37165" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_91d292df-73d6-4f48-87fb-f5d19fbe2416" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_DepreciationAndAmortization_91d292df-73d6-4f48-87fb-f5d19fbe2416" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RestructuringAndOtherExpenseIncomeMainline_f55ba60a-3fa3-46db-9f22-4034b373c3b9" xlink:href="aal-20211231.xsd#aal_RestructuringAndOtherExpenseIncomeMainline"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_aal_RestructuringAndOtherExpenseIncomeMainline_f55ba60a-3fa3-46db-9f22-4034b373c3b9" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_eb4a5e57-d503-41c5-8288-8cbea3469fc6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherCostAndExpenseOperating"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_eb4a5e57-d503-41c5-8288-8cbea3469fc6" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_9f789dbe-b2bb-4e72-aac3-7e04e4782ed8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostsAndExpenses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CostsAndExpensesAbstract_abe8a4ce-c665-420b-9279-c0ac68a7b12d" xlink:to="loc_us-gaap_CostsAndExpenses_9f789dbe-b2bb-4e72-aac3-7e04e4782ed8" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_a711b7eb-f362-4f01-8799-178f7fc77f2c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d2d715aa-54bb-4557-bb0f-2038ae738da4" xlink:to="loc_us-gaap_OperatingIncomeLoss_a711b7eb-f362-4f01-8799-178f7fc77f2c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_d94ae0db-5da0-4f78-9a1b-01f254e34928" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d2d715aa-54bb-4557-bb0f-2038ae738da4" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_d94ae0db-5da0-4f78-9a1b-01f254e34928" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_861fe6f5-2760-4a5c-9a8c-212312cded42" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentIncomeInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_d94ae0db-5da0-4f78-9a1b-01f254e34928" xlink:to="loc_us-gaap_InvestmentIncomeInterest_861fe6f5-2760-4a5c-9a8c-212312cded42" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_974c3ae7-96e7-4ea6-b1a6-961698dc186d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_d94ae0db-5da0-4f78-9a1b-01f254e34928" xlink:to="loc_us-gaap_InterestExpense_974c3ae7-96e7-4ea6-b1a6-961698dc186d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_5d372047-0437-4309-a95b-104b36680dd6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_d94ae0db-5da0-4f78-9a1b-01f254e34928" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_5d372047-0437-4309-a95b-104b36680dd6" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_07a776ef-ae60-4c52-b0e2-4fd73ac644ba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NonoperatingIncomeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_d94ae0db-5da0-4f78-9a1b-01f254e34928" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_07a776ef-ae60-4c52-b0e2-4fd73ac644ba" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_006b223e-80c7-495d-86a8-fb1b6ab73fce" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d2d715aa-54bb-4557-bb0f-2038ae738da4" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_006b223e-80c7-495d-86a8-fb1b6ab73fce" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_b0a55f15-642a-48b5-ad24-b687220e0382" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d2d715aa-54bb-4557-bb0f-2038ae738da4" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_b0a55f15-642a-48b5-ad24-b687220e0382" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_8428a71f-2b1b-424e-ab31-09b039aba417" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d2d715aa-54bb-4557-bb0f-2038ae738da4" xlink:to="loc_us-gaap_NetIncomeLoss_8428a71f-2b1b-424e-ab31-09b039aba417" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_ef179ecc-f574-474c-9f1d-21eac7604ed6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_d2d715aa-54bb-4557-bb0f-2038ae738da4" xlink:to="loc_us-gaap_StatementTable_ef179ecc-f574-474c-9f1d-21eac7604ed6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ee6fe488-7429-4f76-83dc-b2b275c10bc9" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_ef179ecc-f574-474c-9f1d-21eac7604ed6" xlink:to="loc_dei_LegalEntityAxis_ee6fe488-7429-4f76-83dc-b2b275c10bc9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ee6fe488-7429-4f76-83dc-b2b275c10bc9_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ee6fe488-7429-4f76-83dc-b2b275c10bc9" xlink:to="loc_dei_EntityDomain_ee6fe488-7429-4f76-83dc-b2b275c10bc9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_af989973-5bf7-4043-bf5b-d96ea9d4a59b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ee6fe488-7429-4f76-83dc-b2b275c10bc9" xlink:to="loc_dei_EntityDomain_af989973-5bf7-4043-bf5b-d96ea9d4a59b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_5c5a536a-cdcd-479a-a104-23e10ff6da32" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_af989973-5bf7-4043-bf5b-d96ea9d4a59b" xlink:to="loc_aal_AmericanAirlinesIncMember_5c5a536a-cdcd-479a-a104-23e10ff6da32" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_943c4693-3388-4c7a-b22e-8faacdea3ba0" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_ef179ecc-f574-474c-9f1d-21eac7604ed6" xlink:to="loc_srt_ProductOrServiceAxis_943c4693-3388-4c7a-b22e-8faacdea3ba0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_943c4693-3388-4c7a-b22e-8faacdea3ba0_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_943c4693-3388-4c7a-b22e-8faacdea3ba0" xlink:to="loc_srt_ProductsAndServicesDomain_943c4693-3388-4c7a-b22e-8faacdea3ba0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_06cbcb01-dc63-4ef5-9cc0-ec8fb07c1a0e" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_943c4693-3388-4c7a-b22e-8faacdea3ba0" xlink:to="loc_srt_ProductsAndServicesDomain_06cbcb01-dc63-4ef5-9cc0-ec8fb07c1a0e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PassengerMember_cb0d4ab2-f1dc-40da-a7c7-3f24c872d732" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PassengerMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_06cbcb01-dc63-4ef5-9cc0-ec8fb07c1a0e" xlink:to="loc_us-gaap_PassengerMember_cb0d4ab2-f1dc-40da-a7c7-3f24c872d732" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CargoAndFreightMember_4c451f5e-2394-4067-8181-e5d84e639afa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CargoAndFreightMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_06cbcb01-dc63-4ef5-9cc0-ec8fb07c1a0e" xlink:to="loc_us-gaap_CargoAndFreightMember_4c451f5e-2394-4067-8181-e5d84e639afa" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_cae2abbc-deba-410f-91bc-b76b929ebde0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProductAndServiceOtherMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_06cbcb01-dc63-4ef5-9cc0-ec8fb07c1a0e" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_cae2abbc-deba-410f-91bc-b76b929ebde0" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedStatementsofComprehensiveIncomeLossAmericanAirlinesInc" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedStatementsofComprehensiveIncomeLossAmericanAirlinesInc"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedStatementsofComprehensiveIncomeLossAmericanAirlinesInc" xlink:type="extended" id="if5dc013ecb644c7db78be5f94311564b_ConsolidatedStatementsofComprehensiveIncomeLossAmericanAirlinesInc">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_ee93df8e-0857-48f9-b852-a10ca1a13501" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_7e64afea-6af6-4691-9a63-455b5af511a1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ee93df8e-0857-48f9-b852-a10ca1a13501" xlink:to="loc_us-gaap_NetIncomeLoss_7e64afea-6af6-4691-9a63-455b5af511a1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_40dcb0be-8f4a-406c-9084-82104fc097c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ee93df8e-0857-48f9-b852-a10ca1a13501" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_40dcb0be-8f4a-406c-9084-82104fc097c7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_0b2caa6d-f66a-45e9-b8ce-79fd251ad2d9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_40dcb0be-8f4a-406c-9084-82104fc097c7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent_0b2caa6d-f66a-45e9-b8ce-79fd251ad2d9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_9f8dea7e-385b-48ac-b45c-d65e7441f2d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_40dcb0be-8f4a-406c-9084-82104fc097c7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent_9f8dea7e-385b-48ac-b45c-d65e7441f2d4" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_80d4ad94-a9b7-4a03-99a5-45714900065e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_40dcb0be-8f4a-406c-9084-82104fc097c7" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_80d4ad94-a9b7-4a03-99a5-45714900065e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_0fb6dd8b-5624-4895-91f0-99dcb5bde2d1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_ee93df8e-0857-48f9-b852-a10ca1a13501" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_0fb6dd8b-5624-4895-91f0-99dcb5bde2d1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_ca8df1f8-69a6-4807-89cc-da419d5cf6d7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_ee93df8e-0857-48f9-b852-a10ca1a13501" xlink:to="loc_us-gaap_StatementTable_ca8df1f8-69a6-4807-89cc-da419d5cf6d7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_3888a323-4bfb-4ab8-b400-df2fcbbbda8f" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_ca8df1f8-69a6-4807-89cc-da419d5cf6d7" xlink:to="loc_dei_LegalEntityAxis_3888a323-4bfb-4ab8-b400-df2fcbbbda8f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3888a323-4bfb-4ab8-b400-df2fcbbbda8f_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3888a323-4bfb-4ab8-b400-df2fcbbbda8f" xlink:to="loc_dei_EntityDomain_3888a323-4bfb-4ab8-b400-df2fcbbbda8f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f5f334cd-d633-4abb-a9c2-8b3500926565" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3888a323-4bfb-4ab8-b400-df2fcbbbda8f" xlink:to="loc_dei_EntityDomain_f5f334cd-d633-4abb-a9c2-8b3500926565" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_3d948de2-4581-415b-b6b9-df53d1e3aac6" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f5f334cd-d633-4abb-a9c2-8b3500926565" xlink:to="loc_aal_AmericanAirlinesIncMember_3d948de2-4581-415b-b6b9-df53d1e3aac6" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedBalanceSheetsAmericanAirlinesGroupInc" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedBalanceSheetsAmericanAirlinesGroupInc"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedBalanceSheetsAmericanAirlinesGroupInc" xlink:type="extended" id="i63eb51f7732a41f2819033fc7df9dd57_ConsolidatedBalanceSheetsAmericanAirlinesGroupInc">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_35b4d508-9dd5-41bc-a4fa-af2a18c39795" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_4da3b49e-b596-4204-968a-ef9b76ebf866" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_35b4d508-9dd5-41bc-a4fa-af2a18c39795" xlink:to="loc_us-gaap_AssetsAbstract_4da3b49e-b596-4204-968a-ef9b76ebf866" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_d5c59c39-3cde-408d-afc9-6f7d0d42634e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrentAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_4da3b49e-b596-4204-968a-ef9b76ebf866" xlink:to="loc_us-gaap_AssetsCurrentAbstract_d5c59c39-3cde-408d-afc9-6f7d0d42634e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_f95063e8-8da8-4b38-b0bd-05e6d039ef62" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Cash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_d5c59c39-3cde-408d-afc9-6f7d0d42634e" xlink:to="loc_us-gaap_Cash_f95063e8-8da8-4b38-b0bd-05e6d039ef62" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_e4680d33-8597-4f96-940d-3b83fe73129a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_d5c59c39-3cde-408d-afc9-6f7d0d42634e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_e4680d33-8597-4f96-940d-3b83fe73129a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndInvestmentsCurrent_8396f2d5-d291-42e0-9896-8ea30f23bfad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedCashAndInvestmentsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_d5c59c39-3cde-408d-afc9-6f7d0d42634e" xlink:to="loc_us-gaap_RestrictedCashAndInvestmentsCurrent_8396f2d5-d291-42e0-9896-8ea30f23bfad" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_d9111829-c516-4871-ac13-b2632ac2952f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReceivablesNetCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_d5c59c39-3cde-408d-afc9-6f7d0d42634e" xlink:to="loc_us-gaap_ReceivablesNetCurrent_d9111829-c516-4871-ac13-b2632ac2952f" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineRelatedInventoryNet_0d8a6cb2-58d1-47c3-9b38-32a9f9865fdb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineRelatedInventoryNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_d5c59c39-3cde-408d-afc9-6f7d0d42634e" xlink:to="loc_us-gaap_AirlineRelatedInventoryNet_0d8a6cb2-58d1-47c3-9b38-32a9f9865fdb" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_0c66ce88-1af0-48e8-8ff5-f53d2a86e395" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_d5c59c39-3cde-408d-afc9-6f7d0d42634e" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_0c66ce88-1af0-48e8-8ff5-f53d2a86e395" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_fcf94927-ccad-430f-9014-13938d11c843" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_d5c59c39-3cde-408d-afc9-6f7d0d42634e" xlink:to="loc_us-gaap_AssetsCurrent_fcf94927-ccad-430f-9014-13938d11c843" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_eb85599c-559a-41eb-93bf-54ce23be7e70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNetAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_4da3b49e-b596-4204-968a-ef9b76ebf866" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_eb85599c-559a-41eb-93bf-54ce23be7e70" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_FlightEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_97236ce3-7d3a-49a5-969a-4551cb305675" xlink:href="aal-20211231.xsd#aal_FlightEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_eb85599c-559a-41eb-93bf-54ce23be7e70" xlink:to="loc_aal_FlightEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_97236ce3-7d3a-49a5-969a-4551cb305675" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_GroundPropertyAndEquipmentGross_c8786925-9492-4b8a-aac1-0a8290bfa2f6" xlink:href="aal-20211231.xsd#aal_GroundPropertyAndEquipmentGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_eb85599c-559a-41eb-93bf-54ce23be7e70" xlink:to="loc_aal_GroundPropertyAndEquipmentGross_c8786925-9492-4b8a-aac1-0a8290bfa2f6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsOnFlightEquipment_1ef87035-bcbd-4a65-9815-d11a6cfde99c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepositsOnFlightEquipment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_eb85599c-559a-41eb-93bf-54ce23be7e70" xlink:to="loc_us-gaap_DepositsOnFlightEquipment_1ef87035-bcbd-4a65-9815-d11a6cfde99c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_5eb35693-55d1-4735-9344-b746790addcc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_eb85599c-559a-41eb-93bf-54ce23be7e70" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_5eb35693-55d1-4735-9344-b746790addcc" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_172fb5fb-2457-4f09-91ce-4072304b4d4d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_eb85599c-559a-41eb-93bf-54ce23be7e70" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_172fb5fb-2457-4f09-91ce-4072304b4d4d" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_455e8697-04dd-43f4-a0b3-4e851930d3fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_eb85599c-559a-41eb-93bf-54ce23be7e70" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_455e8697-04dd-43f4-a0b3-4e851930d3fd" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_02466b64-bd3b-4596-a279-f91a0da7e406" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_4da3b49e-b596-4204-968a-ef9b76ebf866" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_02466b64-bd3b-4596-a279-f91a0da7e406" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrentAbstract_4485ee2d-6480-410c-86d7-10d2dd2ed0ff" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsNoncurrentAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_4da3b49e-b596-4204-968a-ef9b76ebf866" xlink:to="loc_us-gaap_OtherAssetsNoncurrentAbstract_4485ee2d-6480-410c-86d7-10d2dd2ed0ff" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_c1fb4fe4-b614-4f62-8343-6095cf368f56" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4485ee2d-6480-410c-86d7-10d2dd2ed0ff" xlink:to="loc_us-gaap_Goodwill_c1fb4fe4-b614-4f62-8343-6095cf368f56" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_fbdf7dc0-30db-4efa-9ef9-757bfa94f09e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4485ee2d-6480-410c-86d7-10d2dd2ed0ff" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_fbdf7dc0-30db-4efa-9ef9-757bfa94f09e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_6fbf4c56-8585-4c0a-8fae-dc8421f357ee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4485ee2d-6480-410c-86d7-10d2dd2ed0ff" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_6fbf4c56-8585-4c0a-8fae-dc8421f357ee" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_9910727a-9d7b-4538-92c1-ecf51b84882e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4485ee2d-6480-410c-86d7-10d2dd2ed0ff" xlink:to="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_9910727a-9d7b-4538-92c1-ecf51b84882e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_d097db47-c633-40f7-a319-27c8d66fda9a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_4485ee2d-6480-410c-86d7-10d2dd2ed0ff" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_d097db47-c633-40f7-a319-27c8d66fda9a" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_b79519be-9d70-4ff1-89ce-f0cd4f7831a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_4da3b49e-b596-4204-968a-ef9b76ebf866" xlink:to="loc_us-gaap_Assets_b79519be-9d70-4ff1-89ce-f0cd4f7831a8" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3c75ff5-70c8-43b7-9471-35b066162cf4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_35b4d508-9dd5-41bc-a4fa-af2a18c39795" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3c75ff5-70c8-43b7-9471-35b066162cf4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_2d76da24-9b90-4a9a-a744-c4c9dfd80e0b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3c75ff5-70c8-43b7-9471-35b066162cf4" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_2d76da24-9b90-4a9a-a744-c4c9dfd80e0b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_a5136dab-948a-4870-bbdc-54cac31c4f42" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_2d76da24-9b90-4a9a-a744-c4c9dfd80e0b" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_a5136dab-948a-4870-bbdc-54cac31c4f42" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_673bbe14-ae2f-4847-bab1-b5c77a465c5b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_2d76da24-9b90-4a9a-a744-c4c9dfd80e0b" xlink:to="loc_us-gaap_AccountsPayableCurrent_673bbe14-ae2f-4847-bab1-b5c77a465c5b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_a9a3377b-02c2-4450-ab96-c8e8c4bc7857" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_2d76da24-9b90-4a9a-a744-c4c9dfd80e0b" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_a9a3377b-02c2-4450-ab96-c8e8c4bc7857" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_1445b26e-b0ed-4a4b-839a-532054f4d773" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_2d76da24-9b90-4a9a-a744-c4c9dfd80e0b" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_1445b26e-b0ed-4a4b-839a-532054f4d773" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_33fd9985-8f70-4355-9d6e-9f184eadb741" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_2d76da24-9b90-4a9a-a744-c4c9dfd80e0b" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_33fd9985-8f70-4355-9d6e-9f184eadb741" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_a18880d0-4c06-483d-8d84-c2034a884958" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_2d76da24-9b90-4a9a-a744-c4c9dfd80e0b" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_a18880d0-4c06-483d-8d84-c2034a884958" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_6fcb14b8-74f4-4247-a1be-1fb121c9bd19" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_2d76da24-9b90-4a9a-a744-c4c9dfd80e0b" xlink:to="loc_us-gaap_LiabilitiesCurrent_6fcb14b8-74f4-4247-a1be-1fb121c9bd19" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_aad77836-43ad-409f-8ae1-92068f63b227" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3c75ff5-70c8-43b7-9471-35b066162cf4" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_aad77836-43ad-409f-8ae1-92068f63b227" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_e4c705ce-f25c-4b90-83ef-83bfbceaf74f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_aad77836-43ad-409f-8ae1-92068f63b227" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_e4c705ce-f25c-4b90-83ef-83bfbceaf74f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_6911ea9d-682c-4645-ad89-4db9f91d572b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_aad77836-43ad-409f-8ae1-92068f63b227" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_6911ea9d-682c-4645-ad89-4db9f91d572b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_f28fed70-5ad9-451d-9316-6a38abaf5716" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_aad77836-43ad-409f-8ae1-92068f63b227" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_f28fed70-5ad9-451d-9316-6a38abaf5716" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_5f1bdde9-c142-433c-8947-441c5c898a79" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_aad77836-43ad-409f-8ae1-92068f63b227" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_5f1bdde9-c142-433c-8947-441c5c898a79" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_33abab49-3085-483b-b81c-96651934406d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_aad77836-43ad-409f-8ae1-92068f63b227" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_33abab49-3085-483b-b81c-96651934406d" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_c1f92e1c-63dc-4e1f-8bd6-60d6d325a641" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_aad77836-43ad-409f-8ae1-92068f63b227" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_c1f92e1c-63dc-4e1f-8bd6-60d6d325a641" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_79645b89-234e-4b0a-b5a6-8530bc9525ed" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommitmentsAndContingencies"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3c75ff5-70c8-43b7-9471-35b066162cf4" xlink:to="loc_us-gaap_CommitmentsAndContingencies_79645b89-234e-4b0a-b5a6-8530bc9525ed" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_7a5f0c54-8893-4291-9ac5-5f5935faf786" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3c75ff5-70c8-43b7-9471-35b066162cf4" xlink:to="loc_us-gaap_StockholdersEquityAbstract_7a5f0c54-8893-4291-9ac5-5f5935faf786" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_1d41ba53-06d5-45c6-b2c3-490354ccbb95" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_7a5f0c54-8893-4291-9ac5-5f5935faf786" xlink:to="loc_us-gaap_CommonStockValue_1d41ba53-06d5-45c6-b2c3-490354ccbb95" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_23e8d042-5dd5-4746-a4a7-817eed436da7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_7a5f0c54-8893-4291-9ac5-5f5935faf786" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_23e8d042-5dd5-4746-a4a7-817eed436da7" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_ed1022d2-e47b-4c87-85b4-72be6aaeb772" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_7a5f0c54-8893-4291-9ac5-5f5935faf786" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_ed1022d2-e47b-4c87-85b4-72be6aaeb772" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_5a375979-4027-42d7-9060-d17e90ba9c42" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_7a5f0c54-8893-4291-9ac5-5f5935faf786" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_5a375979-4027-42d7-9060-d17e90ba9c42" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_0352d8fc-668f-4dc5-a6f3-28c42eea9105" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_7a5f0c54-8893-4291-9ac5-5f5935faf786" xlink:to="loc_us-gaap_StockholdersEquity_0352d8fc-668f-4dc5-a6f3-28c42eea9105" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_f619e5cc-a649-4a37-946e-52e79012d8be" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_e3c75ff5-70c8-43b7-9471-35b066162cf4" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_f619e5cc-a649-4a37-946e-52e79012d8be" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_ff944e51-daa0-4d60-80fc-736659359571" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_35b4d508-9dd5-41bc-a4fa-af2a18c39795" xlink:to="loc_us-gaap_StatementTable_ff944e51-daa0-4d60-80fc-736659359571" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_e2c1b5b5-5f59-4948-966c-d435afb2fd7c" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_ff944e51-daa0-4d60-80fc-736659359571" xlink:to="loc_srt_ProductOrServiceAxis_e2c1b5b5-5f59-4948-966c-d435afb2fd7c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e2c1b5b5-5f59-4948-966c-d435afb2fd7c_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_e2c1b5b5-5f59-4948-966c-d435afb2fd7c" xlink:to="loc_srt_ProductsAndServicesDomain_e2c1b5b5-5f59-4948-966c-d435afb2fd7c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_8905b1cc-8f5c-4214-b236-4ab5577ea198" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_e2c1b5b5-5f59-4948-966c-d435afb2fd7c" xlink:to="loc_srt_ProductsAndServicesDomain_8905b1cc-8f5c-4214-b236-4ab5577ea198" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AirTrafficMember_93b830fb-7390-41ac-b1d4-4cdc8c4545f4" xlink:href="aal-20211231.xsd#aal_AirTrafficMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_8905b1cc-8f5c-4214-b236-4ab5577ea198" xlink:to="loc_aal_AirTrafficMember_93b830fb-7390-41ac-b1d4-4cdc8c4545f4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramMember_e3ffec59-b976-46bf-b8bb-98e96ebd6c25" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_8905b1cc-8f5c-4214-b236-4ab5577ea198" xlink:to="loc_aal_LoyaltyProgramMember_e3ffec59-b976-46bf-b8bb-98e96ebd6c25" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedBalanceSheetsAmericanAirlinesInc" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedBalanceSheetsAmericanAirlinesInc"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedBalanceSheetsAmericanAirlinesInc" xlink:type="extended" id="i992bbe03334f4f958bc7728356e6cb95_ConsolidatedBalanceSheetsAmericanAirlinesInc">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_248972ea-bcf4-4dd5-9ad4-b4c43ff0d277" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract_83598ba3-557d-485f-9443-16a57de39ac7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_248972ea-bcf4-4dd5-9ad4-b4c43ff0d277" xlink:to="loc_us-gaap_AssetsAbstract_83598ba3-557d-485f-9443-16a57de39ac7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrentAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_83598ba3-557d-485f-9443-16a57de39ac7" xlink:to="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_3856eb10-7275-404f-9477-7d168dfc095a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Cash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:to="loc_us-gaap_Cash_3856eb10-7275-404f-9477-7d168dfc095a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_5193757c-94be-4cac-93f1-856ee414ecc8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_5193757c-94be-4cac-93f1-856ee414ecc8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndInvestmentsCurrent_c076efec-9b12-43ec-9cb5-33e26d164f69" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedCashAndInvestmentsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:to="loc_us-gaap_RestrictedCashAndInvestmentsCurrent_c076efec-9b12-43ec-9cb5-33e26d164f69" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesNetCurrent_f20f86aa-c9e2-4ae6-8655-621d38e9f318" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReceivablesNetCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:to="loc_us-gaap_ReceivablesNetCurrent_f20f86aa-c9e2-4ae6-8655-621d38e9f318" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent_45743667-7e10-4ba4-af90-3d567b16a072" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:to="loc_us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent_45743667-7e10-4ba4-af90-3d567b16a072" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineRelatedInventoryNet_06374df9-0343-469f-a705-d6e2ded8dcc1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineRelatedInventoryNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:to="loc_us-gaap_AirlineRelatedInventoryNet_06374df9-0343-469f-a705-d6e2ded8dcc1" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_bde78c7f-84ad-4a8a-9658-6a16db5a4a9d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_bde78c7f-84ad-4a8a-9658-6a16db5a4a9d" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_a556edfc-1f5c-4056-b753-a13a5e5d1725" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_a6a7e451-f6f6-4c1c-a9bf-8da79f841132" xlink:to="loc_us-gaap_AssetsCurrent_a556edfc-1f5c-4056-b753-a13a5e5d1725" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_0b51fbf4-2592-45ca-badb-828a32744a9c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNetAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_83598ba3-557d-485f-9443-16a57de39ac7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_0b51fbf4-2592-45ca-badb-828a32744a9c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_FlightEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_9ef570b2-8397-40a1-ae18-ffa7edf5dadd" xlink:href="aal-20211231.xsd#aal_FlightEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_0b51fbf4-2592-45ca-badb-828a32744a9c" xlink:to="loc_aal_FlightEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_9ef570b2-8397-40a1-ae18-ffa7edf5dadd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_GroundPropertyAndEquipmentGross_34046064-a910-4894-b138-e5adc22c1d4e" xlink:href="aal-20211231.xsd#aal_GroundPropertyAndEquipmentGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_0b51fbf4-2592-45ca-badb-828a32744a9c" xlink:to="loc_aal_GroundPropertyAndEquipmentGross_34046064-a910-4894-b138-e5adc22c1d4e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsOnFlightEquipment_7d228446-440e-4a9e-8f58-85478eebae9a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepositsOnFlightEquipment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_0b51fbf4-2592-45ca-badb-828a32744a9c" xlink:to="loc_us-gaap_DepositsOnFlightEquipment_7d228446-440e-4a9e-8f58-85478eebae9a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_a680a560-049d-43e5-b96e-c224a03afeec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_0b51fbf4-2592-45ca-badb-828a32744a9c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetBeforeAccumulatedDepreciationAndAmortization_a680a560-049d-43e5-b96e-c224a03afeec" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_0b16cc93-239a-4db2-938e-1f928eb46b0b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_0b51fbf4-2592-45ca-badb-828a32744a9c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization_0b16cc93-239a-4db2-938e-1f928eb46b0b" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_b292af32-fe1d-43a7-9d8f-117acbe31a95" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetAbstract_0b51fbf4-2592-45ca-badb-828a32744a9c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_b292af32-fe1d-43a7-9d8f-117acbe31a95" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_894363fc-072e-4d82-b590-2ce1a5faff31" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_83598ba3-557d-485f-9443-16a57de39ac7" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_894363fc-072e-4d82-b590-2ce1a5faff31" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrentAbstract_bb26300a-d641-4b64-ad16-c9dadc2646d2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsNoncurrentAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_83598ba3-557d-485f-9443-16a57de39ac7" xlink:to="loc_us-gaap_OtherAssetsNoncurrentAbstract_bb26300a-d641-4b64-ad16-c9dadc2646d2" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_a8a7dff9-5750-43a2-b1a3-08b229e3c660" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_bb26300a-d641-4b64-ad16-c9dadc2646d2" xlink:to="loc_us-gaap_Goodwill_a8a7dff9-5750-43a2-b1a3-08b229e3c660" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_b60e00d4-ba6e-44e1-b1a7-a3348c65006c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_bb26300a-d641-4b64-ad16-c9dadc2646d2" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_b60e00d4-ba6e-44e1-b1a7-a3348c65006c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_8e320bfc-a871-4089-b439-99c777746200" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_bb26300a-d641-4b64-ad16-c9dadc2646d2" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_8e320bfc-a871-4089-b439-99c777746200" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_0b775bb1-a414-4877-8b8c-a88e6e4ee05d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_bb26300a-d641-4b64-ad16-c9dadc2646d2" xlink:to="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_0b775bb1-a414-4877-8b8c-a88e6e4ee05d" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_da7a76f5-554a-4d5a-86e0-30e1943cc883" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherAssetsNoncurrentAbstract_bb26300a-d641-4b64-ad16-c9dadc2646d2" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_da7a76f5-554a-4d5a-86e0-30e1943cc883" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_9198fd72-add0-4a8c-a754-79f86ad8d603" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_83598ba3-557d-485f-9443-16a57de39ac7" xlink:to="loc_us-gaap_Assets_9198fd72-add0-4a8c-a754-79f86ad8d603" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d487224d-a071-411e-be94-6b8790abe560" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_248972ea-bcf4-4dd5-9ad4-b4c43ff0d277" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d487224d-a071-411e-be94-6b8790abe560" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_3c4e943d-b9e8-42c8-9f9d-41dd7984269c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d487224d-a071-411e-be94-6b8790abe560" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_3c4e943d-b9e8-42c8-9f9d-41dd7984269c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_302e2313-114f-4420-8458-4ab724765efe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_3c4e943d-b9e8-42c8-9f9d-41dd7984269c" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_302e2313-114f-4420-8458-4ab724765efe" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_b8e855a0-54c2-43e5-9246-338fb8e70629" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_3c4e943d-b9e8-42c8-9f9d-41dd7984269c" xlink:to="loc_us-gaap_AccountsPayableCurrent_b8e855a0-54c2-43e5-9246-338fb8e70629" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_c4ecba73-0bbf-4c37-8bd7-458659ebb955" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_3c4e943d-b9e8-42c8-9f9d-41dd7984269c" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_c4ecba73-0bbf-4c37-8bd7-458659ebb955" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_b4ab0dd0-42cc-4996-8e24-38995cec37c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_3c4e943d-b9e8-42c8-9f9d-41dd7984269c" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_b4ab0dd0-42cc-4996-8e24-38995cec37c9" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_cd121b4c-90ce-4b3f-a6b0-ba40c8cebde3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_3c4e943d-b9e8-42c8-9f9d-41dd7984269c" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_cd121b4c-90ce-4b3f-a6b0-ba40c8cebde3" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_9ee83198-bc8a-47fd-a099-5b84ce2be032" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_3c4e943d-b9e8-42c8-9f9d-41dd7984269c" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_9ee83198-bc8a-47fd-a099-5b84ce2be032" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_0b23df25-d8bb-4724-b168-b077741ea449" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_3c4e943d-b9e8-42c8-9f9d-41dd7984269c" xlink:to="loc_us-gaap_LiabilitiesCurrent_0b23df25-d8bb-4724-b168-b077741ea449" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_48af4465-0929-4899-904c-cc5b05152380" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d487224d-a071-411e-be94-6b8790abe560" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_48af4465-0929-4899-904c-cc5b05152380" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_a09189c9-d9e9-4172-9f57-cd988982a098" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_48af4465-0929-4899-904c-cc5b05152380" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_a09189c9-d9e9-4172-9f57-cd988982a098" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_2d861e25-a668-4a27-ace5-1af3966403e4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_48af4465-0929-4899-904c-cc5b05152380" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_2d861e25-a668-4a27-ace5-1af3966403e4" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_bfe4ae86-b6b9-4c6d-b00e-dfbaff01a6fc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_48af4465-0929-4899-904c-cc5b05152380" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_bfe4ae86-b6b9-4c6d-b00e-dfbaff01a6fc" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_bfbb40db-957a-417f-9dc7-04e0b923da8e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_48af4465-0929-4899-904c-cc5b05152380" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_bfbb40db-957a-417f-9dc7-04e0b923da8e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_dcad3218-91a4-4ec8-b0c1-b718a860b328" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_48af4465-0929-4899-904c-cc5b05152380" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_dcad3218-91a4-4ec8-b0c1-b718a860b328" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_b1e0f53a-2a0e-4cde-9fed-9a3117a64a37" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_48af4465-0929-4899-904c-cc5b05152380" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_b1e0f53a-2a0e-4cde-9fed-9a3117a64a37" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_e7ccf8a5-1d1d-4a47-b176-a80fb1fab4e4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommitmentsAndContingencies"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d487224d-a071-411e-be94-6b8790abe560" xlink:to="loc_us-gaap_CommitmentsAndContingencies_e7ccf8a5-1d1d-4a47-b176-a80fb1fab4e4" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityAbstract_61426731-7447-430d-9fc9-aabd4d27da3c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d487224d-a071-411e-be94-6b8790abe560" xlink:to="loc_us-gaap_StockholdersEquityAbstract_61426731-7447-430d-9fc9-aabd4d27da3c" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_4df32fdd-1614-4f01-b895-d769c6352b3a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_61426731-7447-430d-9fc9-aabd4d27da3c" xlink:to="loc_us-gaap_CommonStockValue_4df32fdd-1614-4f01-b895-d769c6352b3a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_dccab41e-755a-46f8-a0af-ac725b1e2020" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_61426731-7447-430d-9fc9-aabd4d27da3c" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_dccab41e-755a-46f8-a0af-ac725b1e2020" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_ffde75f3-01c7-46e9-99b4-9c4a37e3c988" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_61426731-7447-430d-9fc9-aabd4d27da3c" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_ffde75f3-01c7-46e9-99b4-9c4a37e3c988" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_2fd47874-fa6d-42ec-a115-aa0dfd4bb061" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_61426731-7447-430d-9fc9-aabd4d27da3c" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_2fd47874-fa6d-42ec-a115-aa0dfd4bb061" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_8881cca0-1b71-4442-90ca-d9fcba6e3bfa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_61426731-7447-430d-9fc9-aabd4d27da3c" xlink:to="loc_us-gaap_StockholdersEquity_8881cca0-1b71-4442-90ca-d9fcba6e3bfa" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_df691ada-2fbe-4f62-a30c-751774ae532e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_d487224d-a071-411e-be94-6b8790abe560" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_df691ada-2fbe-4f62-a30c-751774ae532e" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_23d2fa56-9880-4334-a0ce-e10ec37a4a4b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_248972ea-bcf4-4dd5-9ad4-b4c43ff0d277" xlink:to="loc_us-gaap_StatementTable_23d2fa56-9880-4334-a0ce-e10ec37a4a4b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_0ceb9371-8fac-4aa1-b5f0-14e0a63d7cf2" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_23d2fa56-9880-4334-a0ce-e10ec37a4a4b" xlink:to="loc_dei_LegalEntityAxis_0ceb9371-8fac-4aa1-b5f0-14e0a63d7cf2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0ceb9371-8fac-4aa1-b5f0-14e0a63d7cf2_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_0ceb9371-8fac-4aa1-b5f0-14e0a63d7cf2" xlink:to="loc_dei_EntityDomain_0ceb9371-8fac-4aa1-b5f0-14e0a63d7cf2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b6254a23-11ab-48c8-a898-74afd2454e47" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_0ceb9371-8fac-4aa1-b5f0-14e0a63d7cf2" xlink:to="loc_dei_EntityDomain_b6254a23-11ab-48c8-a898-74afd2454e47" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_17ade631-420c-4dba-b88e-4384bc3313d1" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b6254a23-11ab-48c8-a898-74afd2454e47" xlink:to="loc_aal_AmericanAirlinesIncMember_17ade631-420c-4dba-b88e-4384bc3313d1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_8a0e8b09-08a3-4ead-b784-ff5668415c6e" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_23d2fa56-9880-4334-a0ce-e10ec37a4a4b" xlink:to="loc_srt_ProductOrServiceAxis_8a0e8b09-08a3-4ead-b784-ff5668415c6e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_8a0e8b09-08a3-4ead-b784-ff5668415c6e_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_8a0e8b09-08a3-4ead-b784-ff5668415c6e" xlink:to="loc_srt_ProductsAndServicesDomain_8a0e8b09-08a3-4ead-b784-ff5668415c6e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_71c2d055-ec11-4625-accb-f43d47dd1be1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_8a0e8b09-08a3-4ead-b784-ff5668415c6e" xlink:to="loc_srt_ProductsAndServicesDomain_71c2d055-ec11-4625-accb-f43d47dd1be1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AirTrafficMember_a81c43cd-a681-4d89-91c4-d4cea34c42a4" xlink:href="aal-20211231.xsd#aal_AirTrafficMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_71c2d055-ec11-4625-accb-f43d47dd1be1" xlink:to="loc_aal_AirTrafficMember_a81c43cd-a681-4d89-91c4-d4cea34c42a4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramMember_e62a4901-3f5a-4d35-b192-7415919da999" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_71c2d055-ec11-4625-accb-f43d47dd1be1" xlink:to="loc_aal_LoyaltyProgramMember_e62a4901-3f5a-4d35-b192-7415919da999" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedBalanceSheetsAmericanAirlinesIncParenthetical" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedBalanceSheetsAmericanAirlinesIncParenthetical"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedBalanceSheetsAmericanAirlinesIncParenthetical" xlink:type="extended" id="ia0bb0d74d5964c928633d2fba90c133f_ConsolidatedBalanceSheetsAmericanAirlinesIncParenthetical">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_69f6589e-76b9-49ea-b31c-e4976d2c7588" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_afbdc93d-18fa-4f1a-b4f8-f84d144619d7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_69f6589e-76b9-49ea-b31c-e4976d2c7588" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_afbdc93d-18fa-4f1a-b4f8-f84d144619d7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_aed384d3-9f4e-4a27-a0c0-3727f366f265" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_69f6589e-76b9-49ea-b31c-e4976d2c7588" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_aed384d3-9f4e-4a27-a0c0-3727f366f265" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_4c499986-b020-44a8-8edb-2148fd6dcb1b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockSharesAuthorized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_69f6589e-76b9-49ea-b31c-e4976d2c7588" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_4c499986-b020-44a8-8edb-2148fd6dcb1b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_eda8c17c-d866-42a6-9914-cad06890be8f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockSharesIssued"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_69f6589e-76b9-49ea-b31c-e4976d2c7588" xlink:to="loc_us-gaap_CommonStockSharesIssued_eda8c17c-d866-42a6-9914-cad06890be8f" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_13c95edb-d58a-4fe5-8fef-99ef9f490861" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockSharesOutstanding"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_69f6589e-76b9-49ea-b31c-e4976d2c7588" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_13c95edb-d58a-4fe5-8fef-99ef9f490861" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_ad6f6581-6c87-476a-a7db-7e9d818105e6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_69f6589e-76b9-49ea-b31c-e4976d2c7588" xlink:to="loc_us-gaap_StatementTable_ad6f6581-6c87-476a-a7db-7e9d818105e6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_fbc3438e-ca34-4cd1-9788-c84b8622fa2d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_ad6f6581-6c87-476a-a7db-7e9d818105e6" xlink:to="loc_dei_LegalEntityAxis_fbc3438e-ca34-4cd1-9788-c84b8622fa2d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fbc3438e-ca34-4cd1-9788-c84b8622fa2d_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_fbc3438e-ca34-4cd1-9788-c84b8622fa2d" xlink:to="loc_dei_EntityDomain_fbc3438e-ca34-4cd1-9788-c84b8622fa2d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_815b3f3c-8aae-4781-8ace-bf08b7d00bff" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_fbc3438e-ca34-4cd1-9788-c84b8622fa2d" xlink:to="loc_dei_EntityDomain_815b3f3c-8aae-4781-8ace-bf08b7d00bff" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_57ec97b1-8fe1-4366-9940-14f49f41e1da" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_815b3f3c-8aae-4781-8ace-bf08b7d00bff" xlink:to="loc_aal_AmericanAirlinesIncMember_57ec97b1-8fe1-4366-9940-14f49f41e1da" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedStatementsofCashFlowsAmericanAirlinesGroupInc" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedStatementsofCashFlowsAmericanAirlinesGroupInc"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedStatementsofCashFlowsAmericanAirlinesGroupInc" xlink:type="extended" id="i67fe73eade164bc88eb05cd4fd56bd2e_ConsolidatedStatementsofCashFlowsAmericanAirlinesGroupInc">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_e694a139-7967-4c84-b091-32cb1d2235c6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_41d6ae12-4c71-42eb-ac72-aa62ac812561" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e694a139-7967-4c84-b091-32cb1d2235c6" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_41d6ae12-4c71-42eb-ac72-aa62ac812561" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_757588d3-4372-4c16-83f3-aaed9b890b65" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_41d6ae12-4c71-42eb-ac72-aa62ac812561" xlink:to="loc_us-gaap_NetIncomeLoss_757588d3-4372-4c16-83f3-aaed9b890b65" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0faf3be2-9767-425c-8d20-a229e5a2c8f6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_41d6ae12-4c71-42eb-ac72-aa62ac812561" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0faf3be2-9767-425c-8d20-a229e5a2c8f6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_MainlineAndExpressDepreciationAndAmortization_adb8dd8b-29d1-403f-825b-bce2051f5e29" xlink:href="aal-20211231.xsd#aal_MainlineAndExpressDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0faf3be2-9767-425c-8d20-a229e5a2c8f6" xlink:to="loc_aal_MainlineAndExpressDepreciationAndAmortization_adb8dd8b-29d1-403f-825b-bce2051f5e29" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_GainLossOnDispositionOfPropertyPlantEquipmentAndSaleAndLeasebackTransactionNet_a71b01d4-b814-433c-b96b-961873920c52" xlink:href="aal-20211231.xsd#aal_GainLossOnDispositionOfPropertyPlantEquipmentAndSaleAndLeasebackTransactionNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0faf3be2-9767-425c-8d20-a229e5a2c8f6" xlink:to="loc_aal_GainLossOnDispositionOfPropertyPlantEquipmentAndSaleAndLeasebackTransactionNet_a71b01d4-b814-433c-b96b-961873920c52" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SpecialChargesNonCash_7d291fab-4e0a-432b-b42d-891e1fb110ba" xlink:href="aal-20211231.xsd#aal_SpecialChargesNonCash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0faf3be2-9767-425c-8d20-a229e5a2c8f6" xlink:to="loc_aal_SpecialChargesNonCash_7d291fab-4e0a-432b-b42d-891e1fb110ba" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_4a29787b-1518-43c9-afd8-be64ab96f711" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0faf3be2-9767-425c-8d20-a229e5a2c8f6" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_4a29787b-1518-43c9-afd8-be64ab96f711" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_479aa609-518c-4721-a488-1c5777c82a98" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0faf3be2-9767-425c-8d20-a229e5a2c8f6" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_479aa609-518c-4721-a488-1c5777c82a98" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_a6cbf7e4-6a81-435f-8caf-52940f058f4e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0faf3be2-9767-425c-8d20-a229e5a2c8f6" xlink:to="loc_us-gaap_ShareBasedCompensation_a6cbf7e4-6a81-435f-8caf-52940f058f4e" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_24e365b2-a2c9-4a69-91c6-b65ab15849a4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNoncashIncomeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_0faf3be2-9767-425c-8d20-a229e5a2c8f6" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_24e365b2-a2c9-4a69-91c6-b65ab15849a4" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_7aed26d5-b3a3-44e1-b0b2-1b8b5863d015" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_41d6ae12-4c71-42eb-ac72-aa62ac812561" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_7aed26d5-b3a3-44e1-b0b2-1b8b5863d015" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_d8a56795-3ba6-42b2-b917-8b1d5191af89" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_7aed26d5-b3a3-44e1-b0b2-1b8b5863d015" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_d8a56795-3ba6-42b2-b917-8b1d5191af89" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_50c6473c-6f64-4085-b75b-61414337d63d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_7aed26d5-b3a3-44e1-b0b2-1b8b5863d015" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_50c6473c-6f64-4085-b75b-61414337d63d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_5b1b5b33-fbf2-4324-9049-577a83faacef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_7aed26d5-b3a3-44e1-b0b2-1b8b5863d015" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_5b1b5b33-fbf2-4324-9049-577a83faacef" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_ba223ab6-d68a-4da1-93f7-52fe7e71bd7a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_7aed26d5-b3a3-44e1-b0b2-1b8b5863d015" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_ba223ab6-d68a-4da1-93f7-52fe7e71bd7a" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionPlanObligations_b5842800-242d-46b5-9e92-8323b6c3729d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInPensionPlanObligations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_7aed26d5-b3a3-44e1-b0b2-1b8b5863d015" xlink:to="loc_us-gaap_IncreaseDecreaseInPensionPlanObligations_b5842800-242d-46b5-9e92-8323b6c3729d" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_93c07455-b86f-4b7e-884e-1c550409708e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_7aed26d5-b3a3-44e1-b0b2-1b8b5863d015" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_93c07455-b86f-4b7e-884e-1c550409708e" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_af1d61b6-e90f-4506-852a-fc7760a19127" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_41d6ae12-4c71-42eb-ac72-aa62ac812561" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_af1d61b6-e90f-4506-852a-fc7760a19127" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e694a139-7967-4c84-b091-32cb1d2235c6" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_559e9f08-e32a-41cf-8a01-e70fc391e75d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_559e9f08-e32a-41cf-8a01-e70fc391e75d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForConstructionInProcess_c27fd5ce-cb3a-4a81-b0d8-e631c794ceef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForConstructionInProcess"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_us-gaap_PaymentsForConstructionInProcess_c27fd5ce-cb3a-4a81-b0d8-e631c794ceef" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_1a0b7541-8169-442d-a324-d7fd4e6ec36b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_1a0b7541-8169-442d-a324-d7fd4e6ec36b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsFromSaleOfPropertyPlantAndEquipmentAndSaleLeasebackTransactions_23cfe8e5-e0b5-4a0d-a76f-e954bf97edcd" xlink:href="aal-20211231.xsd#aal_ProceedsFromSaleOfPropertyPlantAndEquipmentAndSaleLeasebackTransactions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_aal_ProceedsFromSaleOfPropertyPlantAndEquipmentAndSaleLeasebackTransactions_23cfe8e5-e0b5-4a0d-a76f-e954bf97edcd" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireShortTermInvestments_f017d133-d4ab-485a-8e74-ce6635330210" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireShortTermInvestments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_us-gaap_PaymentsToAcquireShortTermInvestments_f017d133-d4ab-485a-8e74-ce6635330210" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_c8c6e313-8c70-4094-ac20-32160b504d5d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleOfShortTermInvestments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_c8c6e313-8c70-4094-ac20-32160b504d5d" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseOfRestrictedInvestments_b9bf045e-dbf3-4fc9-bd61-899557ebfe12" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseOfRestrictedInvestments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_us-gaap_IncreaseDecreaseOfRestrictedInvestments_b9bf045e-dbf3-4fc9-bd61-899557ebfe12" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PaymentToAcquireEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue_912e01ea-01d9-467c-b6b8-45aac9209e3a" xlink:href="aal-20211231.xsd#aal_PaymentToAcquireEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_aal_PaymentToAcquireEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue_912e01ea-01d9-467c-b6b8-45aac9209e3a" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsOnSaleOfEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue_8be89053-74ce-4929-96d5-94f321a23b31" xlink:href="aal-20211231.xsd#aal_ProceedsOnSaleOfEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_aal_ProceedsOnSaleOfEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue_8be89053-74ce-4929-96d5-94f321a23b31" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsFromVendor_c98dfe68-8e70-4323-b22a-40b09ba204f2" xlink:href="aal-20211231.xsd#aal_ProceedsFromVendor"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_aal_ProceedsFromVendor_c98dfe68-8e70-4323-b22a-40b09ba204f2" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_dcf6e34f-a1fd-497a-a3cf-679dc3ec60d5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_dcf6e34f-a1fd-497a-a3cf-679dc3ec60d5" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a7300f77-c784-4028-a099-c9196592664c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_3a79d0ad-debb-476b-813c-5c6b19b0f093" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_a7300f77-c784-4028-a099-c9196592664c" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e694a139-7967-4c84-b091-32cb1d2235c6" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_da97d3d0-d9f7-4cc8-93ec-673f01dea3c5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_da97d3d0-d9f7-4cc8-93ec-673f01dea3c5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations_3d9249c1-0bab-49d1-ba04-a0f414889806" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:to="loc_us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations_3d9249c1-0bab-49d1-ba04-a0f414889806" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_a8632667-d698-46d0-b671-58cd2366dbe1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOrSaleOfEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:to="loc_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_a8632667-d698-46d0-b671-58cd2366dbe1" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_4161b2a1-8d69-44c8-8a5f-4ce8e6310712" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_4161b2a1-8d69-44c8-8a5f-4ce8e6310712" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_9f525196-8f05-481a-8fbf-2cad4e3e54e6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_9f525196-8f05-481a-8fbf-2cad4e3e54e6" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfOrdinaryDividends_149c3938-d3f8-4b0c-ae2d-ec9147e2c66e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfOrdinaryDividends"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:to="loc_us-gaap_PaymentsOfOrdinaryDividends_149c3938-d3f8-4b0c-ae2d-ec9147e2c66e" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_34aa5a20-2693-46b0-b0a7-948d7715a756" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_34aa5a20-2693-46b0-b0a7-948d7715a756" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_2def5d82-434e-4a30-bf72-f9aeaf6c2a47" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_b2b98f41-7387-46d1-8c0b-f0abc9b3e2f5" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_2def5d82-434e-4a30-bf72-f9aeaf6c2a47" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_a33536f0-3622-4171-b3a2-d582103274a0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e694a139-7967-4c84-b091-32cb1d2235c6" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_a33536f0-3622-4171-b3a2-d582103274a0" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_64e77c06-d7fb-457e-88b0-00fc746586e3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_e694a139-7967-4c84-b091-32cb1d2235c6" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_64e77c06-d7fb-457e-88b0-00fc746586e3" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_ef3634d1-5330-4fe4-85ce-1d3ec6b66e11" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_790d62c3-0528-46cb-b51b-cac7c34f70ae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_e694a139-7967-4c84-b091-32cb1d2235c6" xlink:to="loc_us-gaap_StatementTable_790d62c3-0528-46cb-b51b-cac7c34f70ae" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_eadca5b9-e97a-44cb-905a-b4ac735a138d" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_790d62c3-0528-46cb-b51b-cac7c34f70ae" xlink:to="loc_srt_ProductOrServiceAxis_eadca5b9-e97a-44cb-905a-b4ac735a138d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_eadca5b9-e97a-44cb-905a-b4ac735a138d_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_eadca5b9-e97a-44cb-905a-b4ac735a138d" xlink:to="loc_srt_ProductsAndServicesDomain_eadca5b9-e97a-44cb-905a-b4ac735a138d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e34851d7-00fd-41f5-9819-cc31ce2066e6" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_eadca5b9-e97a-44cb-905a-b4ac735a138d" xlink:to="loc_srt_ProductsAndServicesDomain_e34851d7-00fd-41f5-9819-cc31ce2066e6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AirTrafficMember_7ffeb244-61d8-4bce-b9fa-c937c0fe8455" xlink:href="aal-20211231.xsd#aal_AirTrafficMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e34851d7-00fd-41f5-9819-cc31ce2066e6" xlink:to="loc_aal_AirTrafficMember_7ffeb244-61d8-4bce-b9fa-c937c0fe8455" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramMember_7c857bb7-ba0a-4ce6-b9b7-9fbd28469513" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e34851d7-00fd-41f5-9819-cc31ce2066e6" xlink:to="loc_aal_LoyaltyProgramMember_7c857bb7-ba0a-4ce6-b9b7-9fbd28469513" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedStatementsofCashFlowsAmericanAirlinesInc" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedStatementsofCashFlowsAmericanAirlinesInc"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedStatementsofCashFlowsAmericanAirlinesInc" xlink:type="extended" id="if7097fa2eec04c04a98ad755bb7cdc3f_ConsolidatedStatementsofCashFlowsAmericanAirlinesInc">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_4e926891-b015-413d-b345-8392844d326b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_4b7bf438-29c5-4c57-afaf-02c71a0e3223" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4e926891-b015-413d-b345-8392844d326b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_4b7bf438-29c5-4c57-afaf-02c71a0e3223" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_21327664-b66a-4931-899f-9e5dcebceea9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_4b7bf438-29c5-4c57-afaf-02c71a0e3223" xlink:to="loc_us-gaap_NetIncomeLoss_21327664-b66a-4931-899f-9e5dcebceea9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8a1b9b38-b114-4ff1-942c-98785f739b13" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_4b7bf438-29c5-4c57-afaf-02c71a0e3223" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8a1b9b38-b114-4ff1-942c-98785f739b13" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_MainlineAndExpressDepreciationAndAmortization_94bd5400-1afc-4907-92d3-f20cb4b9bb7e" xlink:href="aal-20211231.xsd#aal_MainlineAndExpressDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8a1b9b38-b114-4ff1-942c-98785f739b13" xlink:to="loc_aal_MainlineAndExpressDepreciationAndAmortization_94bd5400-1afc-4907-92d3-f20cb4b9bb7e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_GainLossOnDispositionOfPropertyPlantEquipmentAndSaleAndLeasebackTransactionNet_be52b331-1ffb-4e3f-977f-d3a181f20f5f" xlink:href="aal-20211231.xsd#aal_GainLossOnDispositionOfPropertyPlantEquipmentAndSaleAndLeasebackTransactionNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8a1b9b38-b114-4ff1-942c-98785f739b13" xlink:to="loc_aal_GainLossOnDispositionOfPropertyPlantEquipmentAndSaleAndLeasebackTransactionNet_be52b331-1ffb-4e3f-977f-d3a181f20f5f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SpecialChargesNonCash_edd933b5-f42a-408d-aacd-a1d9acab74c4" xlink:href="aal-20211231.xsd#aal_SpecialChargesNonCash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8a1b9b38-b114-4ff1-942c-98785f739b13" xlink:to="loc_aal_SpecialChargesNonCash_edd933b5-f42a-408d-aacd-a1d9acab74c4" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_b1d946a2-2ce9-4939-8b5d-62dbe4bcb5cb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8a1b9b38-b114-4ff1-942c-98785f739b13" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash_b1d946a2-2ce9-4939-8b5d-62dbe4bcb5cb" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_71854226-938a-49c1-919b-22e0b8de3cc3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8a1b9b38-b114-4ff1-942c-98785f739b13" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_71854226-938a-49c1-919b-22e0b8de3cc3" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_a301d035-a643-47be-855b-ed2dc19fa864" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8a1b9b38-b114-4ff1-942c-98785f739b13" xlink:to="loc_us-gaap_ShareBasedCompensation_a301d035-a643-47be-855b-ed2dc19fa864" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_ec76e95e-8403-42d2-be2c-32b98ec2b9ac" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNoncashIncomeExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_8a1b9b38-b114-4ff1-942c-98785f739b13" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_ec76e95e-8403-42d2-be2c-32b98ec2b9ac" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a71148a-5df9-402d-b630-d3808b7acab8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_4b7bf438-29c5-4c57-afaf-02c71a0e3223" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a71148a-5df9-402d-b630-d3808b7acab8" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_cf08b619-a78b-4da3-80b7-785f2fae11a4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a71148a-5df9-402d-b630-d3808b7acab8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_cf08b619-a78b-4da3-80b7-785f2fae11a4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_f790168a-90f9-4896-9844-e96bdc9cef12" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a71148a-5df9-402d-b630-d3808b7acab8" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_f790168a-90f9-4896-9844-e96bdc9cef12" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_11442895-29e1-495e-aedd-3e30b93d9a18" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a71148a-5df9-402d-b630-d3808b7acab8" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_11442895-29e1-495e-aedd-3e30b93d9a18" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_eb98a7e7-39ce-4418-a62c-bff22472cae4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a71148a-5df9-402d-b630-d3808b7acab8" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_eb98a7e7-39ce-4418-a62c-bff22472cae4" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueFromRelatedParties_8c12b73a-6c71-4228-b25f-7be1a3e2b7f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInDueFromRelatedParties"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a71148a-5df9-402d-b630-d3808b7acab8" xlink:to="loc_us-gaap_IncreaseDecreaseInDueFromRelatedParties_8c12b73a-6c71-4228-b25f-7be1a3e2b7f1" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPensionPlanObligations_c32b59f7-0464-47ad-9b91-d0ee7ab043bd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInPensionPlanObligations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a71148a-5df9-402d-b630-d3808b7acab8" xlink:to="loc_us-gaap_IncreaseDecreaseInPensionPlanObligations_c32b59f7-0464-47ad-9b91-d0ee7ab043bd" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_041094c1-d9be-47b1-8130-e86de8792833" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_8a71148a-5df9-402d-b630-d3808b7acab8" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_041094c1-d9be-47b1-8130-e86de8792833" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_0d4ee0f7-020b-42e1-9a82-9131bc66b9ae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_4b7bf438-29c5-4c57-afaf-02c71a0e3223" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_0d4ee0f7-020b-42e1-9a82-9131bc66b9ae" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4e926891-b015-413d-b345-8392844d326b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_093ddbaa-646f-41a8-884e-b761aa887006" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_093ddbaa-646f-41a8-884e-b761aa887006" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForConstructionInProcess_af45072e-791e-46a0-baf8-732094dfe9e2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForConstructionInProcess"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_us-gaap_PaymentsForConstructionInProcess_af45072e-791e-46a0-baf8-732094dfe9e2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_c4c01236-fd37-470b-995d-657f2f1d8285" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_c4c01236-fd37-470b-995d-657f2f1d8285" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsFromSaleOfPropertyPlantAndEquipmentAndSaleLeasebackTransactions_86b7d80b-ce10-415d-a16a-fdb960b78a7e" xlink:href="aal-20211231.xsd#aal_ProceedsFromSaleOfPropertyPlantAndEquipmentAndSaleLeasebackTransactions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_aal_ProceedsFromSaleOfPropertyPlantAndEquipmentAndSaleLeasebackTransactions_86b7d80b-ce10-415d-a16a-fdb960b78a7e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireShortTermInvestments_25d10b71-088a-4243-ad2f-460ff15212bf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireShortTermInvestments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_us-gaap_PaymentsToAcquireShortTermInvestments_25d10b71-088a-4243-ad2f-460ff15212bf" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_af681d27-b85c-4831-a1ba-3071e09c7e2f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleOfShortTermInvestments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_us-gaap_ProceedsFromSaleOfShortTermInvestments_af681d27-b85c-4831-a1ba-3071e09c7e2f" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseOfRestrictedInvestments_fe5aa2da-f9db-439e-bf95-ec24318ec6b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseOfRestrictedInvestments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_us-gaap_IncreaseDecreaseOfRestrictedInvestments_fe5aa2da-f9db-439e-bf95-ec24318ec6b5" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PaymentToAcquireEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue_47c5d56b-9c25-4739-99f2-bfa1f0e22bec" xlink:href="aal-20211231.xsd#aal_PaymentToAcquireEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_aal_PaymentToAcquireEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue_47c5d56b-9c25-4739-99f2-bfa1f0e22bec" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsOnSaleOfEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue_e390aebc-7258-4c73-879a-e05f21b1f422" xlink:href="aal-20211231.xsd#aal_ProceedsOnSaleOfEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_aal_ProceedsOnSaleOfEquitySecuritiesEquitySecuritiesFVNIAndEquitySecuritiesWithoutReadilyDeterminableFairValue_e390aebc-7258-4c73-879a-e05f21b1f422" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsFromVendor_c4a91369-b556-4951-b09a-ce5357cc9dca" xlink:href="aal-20211231.xsd#aal_ProceedsFromVendor"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_aal_ProceedsFromVendor_c4a91369-b556-4951-b09a-ce5357cc9dca" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_6c2b91fa-6e1a-4152-869d-8940dd826c74" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_6c2b91fa-6e1a-4152-869d-8940dd826c74" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_1e77c5b2-8736-4f66-865f-aa81258bcb57" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_090cc8df-3d1c-4d8e-a0fc-141a03a9b2cb" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_1e77c5b2-8736-4f66-865f-aa81258bcb57" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_85b76dec-43d3-4291-a82b-6ef5cd53f2da" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4e926891-b015-413d-b345-8392844d326b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_85b76dec-43d3-4291-a82b-6ef5cd53f2da" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_72535d33-3649-4742-a533-d3b188f96ad3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_85b76dec-43d3-4291-a82b-6ef5cd53f2da" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_72535d33-3649-4742-a533-d3b188f96ad3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations_c8fefa5b-7fb1-4a04-b8e1-c8f4ee3cc211" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_85b76dec-43d3-4291-a82b-6ef5cd53f2da" xlink:to="loc_us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations_c8fefa5b-7fb1-4a04-b8e1-c8f4ee3cc211" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_2a548438-32ed-46a2-b66e-8b63fa974bcc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_85b76dec-43d3-4291-a82b-6ef5cd53f2da" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_2a548438-32ed-46a2-b66e-8b63fa974bcc" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_e341a62b-ebe6-46a2-9098-5801a82625e9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_85b76dec-43d3-4291-a82b-6ef5cd53f2da" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_e341a62b-ebe6-46a2-9098-5801a82625e9" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_2b6dde7f-3072-41d8-b943-879af94bf8e2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_85b76dec-43d3-4291-a82b-6ef5cd53f2da" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_2b6dde7f-3072-41d8-b943-879af94bf8e2" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_4971984f-58e2-46de-8f19-9b4874039e10" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4e926891-b015-413d-b345-8392844d326b" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_4971984f-58e2-46de-8f19-9b4874039e10" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_175ed00a-ab05-470f-b3d8-c3cd050f1679" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_4e926891-b015-413d-b345-8392844d326b" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_175ed00a-ab05-470f-b3d8-c3cd050f1679" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_87e4a718-8bef-419f-8a37-d8ce9a6c744a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_bf6fe924-975a-4d96-94dd-da1d6d3cb112" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_4e926891-b015-413d-b345-8392844d326b" xlink:to="loc_us-gaap_StatementTable_bf6fe924-975a-4d96-94dd-da1d6d3cb112" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_9b2a0fb7-0844-4014-8253-66537981409a" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_bf6fe924-975a-4d96-94dd-da1d6d3cb112" xlink:to="loc_srt_ProductOrServiceAxis_9b2a0fb7-0844-4014-8253-66537981409a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_9b2a0fb7-0844-4014-8253-66537981409a_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_9b2a0fb7-0844-4014-8253-66537981409a" xlink:to="loc_srt_ProductsAndServicesDomain_9b2a0fb7-0844-4014-8253-66537981409a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_08f30b4b-b32a-47bb-a236-d79b88236221" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_9b2a0fb7-0844-4014-8253-66537981409a" xlink:to="loc_srt_ProductsAndServicesDomain_08f30b4b-b32a-47bb-a236-d79b88236221" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AirTrafficMember_9877f6a8-5015-4459-8d29-40e6082c90ac" xlink:href="aal-20211231.xsd#aal_AirTrafficMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_08f30b4b-b32a-47bb-a236-d79b88236221" xlink:to="loc_aal_AirTrafficMember_9877f6a8-5015-4459-8d29-40e6082c90ac" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramMember_bfe56682-c247-4b7f-9d5d-95c3413a61c3" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_08f30b4b-b32a-47bb-a236-d79b88236221" xlink:to="loc_aal_LoyaltyProgramMember_bfe56682-c247-4b7f-9d5d-95c3413a61c3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_d10fce30-59f2-42f9-b727-bf595e4921f2" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_bf6fe924-975a-4d96-94dd-da1d6d3cb112" xlink:to="loc_dei_LegalEntityAxis_d10fce30-59f2-42f9-b727-bf595e4921f2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d10fce30-59f2-42f9-b727-bf595e4921f2_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_d10fce30-59f2-42f9-b727-bf595e4921f2" xlink:to="loc_dei_EntityDomain_d10fce30-59f2-42f9-b727-bf595e4921f2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_88359de7-5871-408a-9201-ef29329664d8" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_d10fce30-59f2-42f9-b727-bf595e4921f2" xlink:to="loc_dei_EntityDomain_88359de7-5871-408a-9201-ef29329664d8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_b352072c-6ea1-4393-a2d4-b2f8d0bf9017" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_88359de7-5871-408a-9201-ef29329664d8" xlink:to="loc_aal_AmericanAirlinesIncMember_b352072c-6ea1-4393-a2d4-b2f8d0bf9017" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedStatementsofCashFlowsAmericanAirlinesIncParenthetical" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedStatementsofCashFlowsAmericanAirlinesIncParenthetical"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedStatementsofCashFlowsAmericanAirlinesIncParenthetical" xlink:type="extended" id="i8e819f97450f4729babc5d412d6cc953_ConsolidatedStatementsofCashFlowsAmericanAirlinesIncParenthetical">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_b6e64781-aaf4-4947-a0de-540b904aa9f5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Cash_95a6a03e-1c4f-41e7-924f-3dc113212eed" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Cash"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b6e64781-aaf4-4947-a0de-540b904aa9f5" xlink:to="loc_us-gaap_Cash_95a6a03e-1c4f-41e7-924f-3dc113212eed" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_81c41833-98c9-4942-a90d-c86f26e9e417" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b6e64781-aaf4-4947-a0de-540b904aa9f5" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_81c41833-98c9-4942-a90d-c86f26e9e417" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6f7d3fe4-acc6-4a07-a281-2c8dcba30428" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_b6e64781-aaf4-4947-a0de-540b904aa9f5" xlink:to="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_6f7d3fe4-acc6-4a07-a281-2c8dcba30428" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_0aff667e-9352-4308-ad0b-9268043e9274" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_b6e64781-aaf4-4947-a0de-540b904aa9f5" xlink:to="loc_us-gaap_StatementTable_0aff667e-9352-4308-ad0b-9268043e9274" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f283ed70-f150-4ea2-b66f-c31124900401" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_0aff667e-9352-4308-ad0b-9268043e9274" xlink:to="loc_dei_LegalEntityAxis_f283ed70-f150-4ea2-b66f-c31124900401" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f283ed70-f150-4ea2-b66f-c31124900401_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f283ed70-f150-4ea2-b66f-c31124900401" xlink:to="loc_dei_EntityDomain_f283ed70-f150-4ea2-b66f-c31124900401_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2cd091c6-263f-4e5a-bd04-cc263c6ee86b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f283ed70-f150-4ea2-b66f-c31124900401" xlink:to="loc_dei_EntityDomain_2cd091c6-263f-4e5a-bd04-cc263c6ee86b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_65b7ef4a-a363-4bdd-96a6-21ebfd59f023" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2cd091c6-263f-4e5a-bd04-cc263c6ee86b" xlink:to="loc_aal_AmericanAirlinesIncMember_65b7ef4a-a363-4bdd-96a6-21ebfd59f023" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesGroupInc" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesGroupInc"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesGroupInc" xlink:type="extended" id="i194aca245a384d869f6bb96fed219521_ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesGroupInc">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_7888ccb1-30d7-4170-a316-2929c8cadd80" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_7888ccb1-30d7-4170-a316-2929c8cadd80" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_c12b0ebc-22a2-4dde-8698-8f88d729d7ad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_StockholdersEquity_c12b0ebc-22a2-4dde-8698-8f88d729d7ad" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_f6286e9d-c935-454e-b27f-d294c68fbc67" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_NetIncomeLoss_f6286e9d-c935-454e-b27f-d294c68fbc67" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_15bf387e-5320-4505-9e74-3e12ca310b2e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_15bf387e-5320-4505-9e74-3e12ca310b2e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_3f2ceeba-ff30-47b7-8700-8d7830b1d4fb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalWarrantIssued_3f2ceeba-ff30-47b7-8700-8d7830b1d4fb" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_490facf5-0889-44a9-901c-1dc10a657bed" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation_490facf5-0889-44a9-901c-1dc10a657bed" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_11452ccc-88dd-45a7-b470-fe387dbf5c62" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_11452ccc-88dd-45a7-b470-fe387dbf5c62" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdateExtensibleList_7838d645-e52b-439e-9e78-1d95c3b803a3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountingStandardsUpdateExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_AccountingStandardsUpdateExtensibleList_7838d645-e52b-439e-9e78-1d95c3b803a3" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtNetOfTaxAndOfferingCosts_465114d1-6e8f-4529-a9bc-db84999c41b6" xlink:href="aal-20211231.xsd#aal_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtNetOfTaxAndOfferingCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_aal_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtNetOfTaxAndOfferingCosts_465114d1-6e8f-4529-a9bc-db84999c41b6" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_b06e5e0d-6bc4-4ec3-b3b0-c6b88dd03f4d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_b06e5e0d-6bc4-4ec3-b3b0-c6b88dd03f4d" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStock_8ec4f9c7-1656-4ee4-9c4e-3d09ef3bf00a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DividendsCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_DividendsCommonStock_8ec4f9c7-1656-4ee4-9c4e-3d09ef3bf00a" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AdjustmentsToAdditionalPaidInCapitalSettlementOfSingleDipUnsecuredClaims_56c4ffa2-2cac-49e6-8e80-022166da9d10" xlink:href="aal-20211231.xsd#aal_AdjustmentsToAdditionalPaidInCapitalSettlementOfSingleDipUnsecuredClaims"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_aal_AdjustmentsToAdditionalPaidInCapitalSettlementOfSingleDipUnsecuredClaims_56c4ffa2-2cac-49e6-8e80-022166da9d10" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AdjustmentsToAdditionalPaidInCapitalSettlementOfSingleDipUnsecuredClaimsAndRetirementOfCommonStock_7539c869-36fd-47b8-908f-4c86b0442f45" xlink:href="aal-20211231.xsd#aal_AdjustmentsToAdditionalPaidInCapitalSettlementOfSingleDipUnsecuredClaimsAndRetirementOfCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_aal_AdjustmentsToAdditionalPaidInCapitalSettlementOfSingleDipUnsecuredClaimsAndRetirementOfCommonStock_7539c869-36fd-47b8-908f-4c86b0442f45" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_48bb2958-79f7-44f5-8497-90cd6c4b4c2c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_1a6c9554-d8bd-4396-bc05-e48ecbb243bc" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_48bb2958-79f7-44f5-8497-90cd6c4b4c2c" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_c1fe260e-0166-4879-afc3-32ca3f2a728d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_17529f45-b7b6-4876-b269-e8797c253ed4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_7888ccb1-30d7-4170-a316-2929c8cadd80" xlink:to="loc_us-gaap_StatementTable_17529f45-b7b6-4876-b269-e8797c253ed4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_b56fa033-ed1e-42f0-81b7-09a50abb3b14" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_17529f45-b7b6-4876-b269-e8797c253ed4" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_b56fa033-ed1e-42f0-81b7-09a50abb3b14" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_b56fa033-ed1e-42f0-81b7-09a50abb3b14_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_b56fa033-ed1e-42f0-81b7-09a50abb3b14" xlink:to="loc_us-gaap_EquityComponentDomain_b56fa033-ed1e-42f0-81b7-09a50abb3b14_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_b40c7fac-0405-4ffe-be1c-b64853b66f47" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_b56fa033-ed1e-42f0-81b7-09a50abb3b14" xlink:to="loc_us-gaap_EquityComponentDomain_b40c7fac-0405-4ffe-be1c-b64853b66f47" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_c3f86855-6fa6-4057-ad10-97c61a958a7a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b40c7fac-0405-4ffe-be1c-b64853b66f47" xlink:to="loc_us-gaap_CommonStockMember_c3f86855-6fa6-4057-ad10-97c61a958a7a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_382c8aa3-d649-42b4-9fbd-a39977798fb6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b40c7fac-0405-4ffe-be1c-b64853b66f47" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_382c8aa3-d649-42b4-9fbd-a39977798fb6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_83dd5485-b8a6-4cd4-99aa-1ad4d1dc6555" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b40c7fac-0405-4ffe-be1c-b64853b66f47" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_83dd5485-b8a6-4cd4-99aa-1ad4d1dc6555" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_20fb6ec8-a19d-4e71-ac73-bfa09440e0f1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_b40c7fac-0405-4ffe-be1c-b64853b66f47" xlink:to="loc_us-gaap_RetainedEarningsMember_20fb6ec8-a19d-4e71-ac73-bfa09440e0f1" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_9eefe365-71a1-4b42-b29b-183da02a9946" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_17529f45-b7b6-4876-b269-e8797c253ed4" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_9eefe365-71a1-4b42-b29b-183da02a9946" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_9eefe365-71a1-4b42-b29b-183da02a9946_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_9eefe365-71a1-4b42-b29b-183da02a9946" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_9eefe365-71a1-4b42-b29b-183da02a9946_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_66a2a2de-034e-487f-9a40-33927d7f0495" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_9eefe365-71a1-4b42-b29b-183da02a9946" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_66a2a2de-034e-487f-9a40-33927d7f0495" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_f5b34965-a9ec-41ca-8a69-eb1697661db1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_66a2a2de-034e-487f-9a40-33927d7f0495" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_f5b34965-a9ec-41ca-8a69-eb1697661db1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_880f120b-708b-4edb-a0ed-8ef868841091" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_17529f45-b7b6-4876-b269-e8797c253ed4" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_880f120b-708b-4edb-a0ed-8ef868841091" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_880f120b-708b-4edb-a0ed-8ef868841091_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_880f120b-708b-4edb-a0ed-8ef868841091" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_880f120b-708b-4edb-a0ed-8ef868841091_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_97ee3775-8aef-4426-8d21-a3d2a2067043" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_880f120b-708b-4edb-a0ed-8ef868841091" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_97ee3775-8aef-4426-8d21-a3d2a2067043" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramOneWarrantsCARESActMember_64df4cda-49eb-4cf0-add7-96687197d282" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramOneWarrantsCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_97ee3775-8aef-4426-8d21-a3d2a2067043" xlink:to="loc_aal_PayrollSupportProgramOneWarrantsCARESActMember_64df4cda-49eb-4cf0-add7-96687197d282" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_TreasuryLoanWarrantAgreementCARESActMember_fb51d62a-ba60-4e8d-8f40-9468dd57790f" xlink:href="aal-20211231.xsd#aal_TreasuryLoanWarrantAgreementCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_97ee3775-8aef-4426-8d21-a3d2a2067043" xlink:to="loc_aal_TreasuryLoanWarrantAgreementCARESActMember_fb51d62a-ba60-4e8d-8f40-9468dd57790f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_8de73ea1-0321-433b-8ce6-cbd8a9ea4248" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_17529f45-b7b6-4876-b269-e8797c253ed4" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_8de73ea1-0321-433b-8ce6-cbd8a9ea4248" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_8de73ea1-0321-433b-8ce6-cbd8a9ea4248_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_8de73ea1-0321-433b-8ce6-cbd8a9ea4248" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_8de73ea1-0321-433b-8ce6-cbd8a9ea4248_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_3e8b84fb-d516-4b9d-a8f4-186769cf8b0a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_8de73ea1-0321-433b-8ce6-cbd8a9ea4248" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_3e8b84fb-d516-4b9d-a8f4-186769cf8b0a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PublicStockOfferingMember_b6ec37f1-063f-42c9-a7c8-d4afe4ab25cd" xlink:href="aal-20211231.xsd#aal_PublicStockOfferingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_3e8b84fb-d516-4b9d-a8f4-186769cf8b0a" xlink:to="loc_aal_PublicStockOfferingMember_b6ec37f1-063f-42c9-a7c8-d4afe4ab25cd" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AtTheMarketOfferingMember_8dc9ecb6-bc06-4b86-93e4-5dcf6cd33295" xlink:href="aal-20211231.xsd#aal_AtTheMarketOfferingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_3e8b84fb-d516-4b9d-a8f4-186769cf8b0a" xlink:to="loc_aal_AtTheMarketOfferingMember_8dc9ecb6-bc06-4b86-93e4-5dcf6cd33295" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesGroupIncParenthetical" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesGroupIncParenthetical"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesGroupIncParenthetical" xlink:type="extended" id="i0369449f634f4ba7b174e49de0a1ed85_ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesGroupIncParenthetical">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_a13706a5-9e2b-4a54-a605-b8f8485a1d98" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_0ee0db31-d98d-477c-906e-bfcc750dd6c0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a13706a5-9e2b-4a54-a605-b8f8485a1d98" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_0ee0db31-d98d-477c-906e-bfcc750dd6c0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_755838b5-7428-4570-a479-f0f79775139a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a13706a5-9e2b-4a54-a605-b8f8485a1d98" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_755838b5-7428-4570-a479-f0f79775139a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_b17f97b5-4781-401b-818f-10b0e93986df" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a13706a5-9e2b-4a54-a605-b8f8485a1d98" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_b17f97b5-4781-401b-818f-10b0e93986df" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_c81f4b0e-1191-45ca-9c9d-d2b1a78dc88a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a13706a5-9e2b-4a54-a605-b8f8485a1d98" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_c81f4b0e-1191-45ca-9c9d-d2b1a78dc88a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockSharesRetired_557645e9-b05e-4557-8d5f-2784ed3d9ffa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TreasuryStockSharesRetired"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_a13706a5-9e2b-4a54-a605-b8f8485a1d98" xlink:to="loc_us-gaap_TreasuryStockSharesRetired_557645e9-b05e-4557-8d5f-2784ed3d9ffa" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_65720d7b-2a04-4fcd-a67a-b5f455d757ca" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_a13706a5-9e2b-4a54-a605-b8f8485a1d98" xlink:to="loc_us-gaap_StatementTable_65720d7b-2a04-4fcd-a67a-b5f455d757ca" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_b4542980-4db6-4644-bb42-210b45668c39" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_65720d7b-2a04-4fcd-a67a-b5f455d757ca" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_b4542980-4db6-4644-bb42-210b45668c39" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_b4542980-4db6-4644-bb42-210b45668c39_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_b4542980-4db6-4644-bb42-210b45668c39" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_b4542980-4db6-4644-bb42-210b45668c39_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_6a63629b-776c-4e4a-bc48-03482f6985ee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_b4542980-4db6-4644-bb42-210b45668c39" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_6a63629b-776c-4e4a-bc48-03482f6985ee" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PublicStockOfferingMember_4a0967de-308c-4db1-a7be-98c6cf9f73da" xlink:href="aal-20211231.xsd#aal_PublicStockOfferingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_6a63629b-776c-4e4a-bc48-03482f6985ee" xlink:to="loc_aal_PublicStockOfferingMember_4a0967de-308c-4db1-a7be-98c6cf9f73da" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AtTheMarketOfferingMember_cb080fb0-ad58-4d85-b09c-ac90a3edc5db" xlink:href="aal-20211231.xsd#aal_AtTheMarketOfferingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_6a63629b-776c-4e4a-bc48-03482f6985ee" xlink:to="loc_aal_AtTheMarketOfferingMember_cb080fb0-ad58-4d85-b09c-ac90a3edc5db" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesInc" xlink:type="simple" xlink:href="aal-20211231.xsd#ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesInc"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesInc" xlink:type="extended" id="i2bc1275c7eb54edb97e0e0dda06e45ab_ConsolidatedStatementsofStockholdersEquityDeficitAmericanAirlinesInc">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_d572c766-39f2-4a3b-a5c1-e331ec8e9338" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712871bf-0dab-4587-8b9f-4badf2cb8fc5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_d572c766-39f2-4a3b-a5c1-e331ec8e9338" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712871bf-0dab-4587-8b9f-4badf2cb8fc5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_eb4fb389-c75a-4856-bbdf-066f24a7fca2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712871bf-0dab-4587-8b9f-4badf2cb8fc5" xlink:to="loc_us-gaap_StockholdersEquity_eb4fb389-c75a-4856-bbdf-066f24a7fca2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_c92af9c3-4876-4abf-b609-fe5f057e0cb6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712871bf-0dab-4587-8b9f-4badf2cb8fc5" xlink:to="loc_us-gaap_NetIncomeLoss_c92af9c3-4876-4abf-b609-fe5f057e0cb6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_26802c8a-322e-44b8-86a1-8016f4617edb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712871bf-0dab-4587-8b9f-4badf2cb8fc5" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_26802c8a-322e-44b8-86a1-8016f4617edb" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_e1871e66-448f-46cf-b12d-378485e5bd1f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712871bf-0dab-4587-8b9f-4badf2cb8fc5" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_e1871e66-448f-46cf-b12d-378485e5bd1f" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_IntercompanyEquityTransfer_13859845-5b67-40cd-8ead-88e82d0a76f2" xlink:href="aal-20211231.xsd#aal_IntercompanyEquityTransfer"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_712871bf-0dab-4587-8b9f-4badf2cb8fc5" xlink:to="loc_aal_IntercompanyEquityTransfer_13859845-5b67-40cd-8ead-88e82d0a76f2" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_e9d0e0f6-9262-4c4e-9d53-d86e220830c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_905074ca-12a4-4b8e-832d-f47f17361249" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_d572c766-39f2-4a3b-a5c1-e331ec8e9338" xlink:to="loc_us-gaap_StatementTable_905074ca-12a4-4b8e-832d-f47f17361249" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_86cb7172-b914-4707-b23b-94ef1c44934f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_905074ca-12a4-4b8e-832d-f47f17361249" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_86cb7172-b914-4707-b23b-94ef1c44934f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_86cb7172-b914-4707-b23b-94ef1c44934f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_86cb7172-b914-4707-b23b-94ef1c44934f" xlink:to="loc_us-gaap_EquityComponentDomain_86cb7172-b914-4707-b23b-94ef1c44934f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_0dafe7d9-e310-4352-812c-c2c3f024bf7d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_86cb7172-b914-4707-b23b-94ef1c44934f" xlink:to="loc_us-gaap_EquityComponentDomain_0dafe7d9-e310-4352-812c-c2c3f024bf7d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_41857e7b-9b68-4f5b-a7fb-db1fa72c5d88" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0dafe7d9-e310-4352-812c-c2c3f024bf7d" xlink:to="loc_us-gaap_CommonStockMember_41857e7b-9b68-4f5b-a7fb-db1fa72c5d88" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_bc526d2d-bcb5-41bf-bb9f-8de6f91f1d12" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0dafe7d9-e310-4352-812c-c2c3f024bf7d" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_bc526d2d-bcb5-41bf-bb9f-8de6f91f1d12" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_845a1701-7472-493f-af48-0a7f879cc5bd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0dafe7d9-e310-4352-812c-c2c3f024bf7d" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_845a1701-7472-493f-af48-0a7f879cc5bd" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_6c7bbde3-5e1d-43dd-96ea-ab4921fde644" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0dafe7d9-e310-4352-812c-c2c3f024bf7d" xlink:to="loc_us-gaap_RetainedEarningsMember_6c7bbde3-5e1d-43dd-96ea-ab4921fde644" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f4bdd970-31c2-4e0b-aebf-834b617db0ab" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_905074ca-12a4-4b8e-832d-f47f17361249" xlink:to="loc_dei_LegalEntityAxis_f4bdd970-31c2-4e0b-aebf-834b617db0ab" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f4bdd970-31c2-4e0b-aebf-834b617db0ab_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f4bdd970-31c2-4e0b-aebf-834b617db0ab" xlink:to="loc_dei_EntityDomain_f4bdd970-31c2-4e0b-aebf-834b617db0ab_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7480852a-7a20-4c44-891d-ad9780016e96" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f4bdd970-31c2-4e0b-aebf-834b617db0ab" xlink:to="loc_dei_EntityDomain_7480852a-7a20-4c44-891d-ad9780016e96" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_6110ec8c-69b0-41ed-9af8-140b9b349edb" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7480852a-7a20-4c44-891d-ad9780016e96" xlink:to="loc_aal_AmericanAirlinesIncMember_6110ec8c-69b0-41ed-9af8-140b9b349edb" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPolicies"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPolicies" xlink:type="extended" id="i2e0ac15767744f66a6e566c9cc393278_BasisofPresentationandSummaryofSignificantAccountingPolicies">
<link:loc xlink:type="locator" xlink:label="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_7caf5e8c-e95a-4151-928d-5dcedf0accae" xlink:href="aal-20211231.xsd#aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_f625bae3-6e17-49fb-aaf1-dc2c709a8984" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_7caf5e8c-e95a-4151-928d-5dcedf0accae" xlink:to="loc_us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock_f625bae3-6e17-49fb-aaf1-dc2c709a8984" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable_dad0bea6-90db-4615-8ec1-3a3da5beb3c2" xlink:href="aal-20211231.xsd#aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_7caf5e8c-e95a-4151-928d-5dcedf0accae" xlink:to="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable_dad0bea6-90db-4615-8ec1-3a3da5beb3c2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_556ab583-7e54-427e-a6ee-47e68aa1f777" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable_dad0bea6-90db-4615-8ec1-3a3da5beb3c2" xlink:to="loc_dei_LegalEntityAxis_556ab583-7e54-427e-a6ee-47e68aa1f777" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_556ab583-7e54-427e-a6ee-47e68aa1f777_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_556ab583-7e54-427e-a6ee-47e68aa1f777" xlink:to="loc_dei_EntityDomain_556ab583-7e54-427e-a6ee-47e68aa1f777_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_13dd4d91-587f-45d0-b6d6-fc9e1b5153dd" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_556ab583-7e54-427e-a6ee-47e68aa1f777" xlink:to="loc_dei_EntityDomain_13dd4d91-587f-45d0-b6d6-fc9e1b5153dd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_bc4c1975-dd0d-4841-aeef-758c8924e90b" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_13dd4d91-587f-45d0-b6d6-fc9e1b5153dd" xlink:to="loc_aal_AmericanAirlinesIncMember_bc4c1975-dd0d-4841-aeef-758c8924e90b" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies" xlink:type="extended" id="id3a87d6ecf084dc48ff452a66f71713a_BasisofPresentationandSummaryofSignificantAccountingPoliciesPolicies">
<link:loc xlink:type="locator" xlink:label="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:href="aal-20211231.xsd#aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_e3e0afd2-a4ed-47d4-9b71-091c25c58a97" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_e3e0afd2-a4ed-47d4-9b71-091c25c58a97" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_a64df352-3e93-4383-8f29-fe7791b1c9b0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_a64df352-3e93-4383-8f29-fe7791b1c9b0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentPolicyTextBlock_0e0fad19-a089-490d-884e-aa1c35552d79" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_InvestmentPolicyTextBlock_0e0fad19-a089-490d-884e-aa1c35552d79" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RestrictedCashAndShortTermInvestmentsPolicyPolicyTextBlock_11f402b0-a711-4dba-90cd-cbb67e8378ca" xlink:href="aal-20211231.xsd#aal_RestrictedCashAndShortTermInvestmentsPolicyPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_aal_RestrictedCashAndShortTermInvestmentsPolicyPolicyTextBlock_11f402b0-a711-4dba-90cd-cbb67e8378ca" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryPolicyTextBlock_4e231c75-e1f5-45a5-9c4c-5c63d488d21e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_InventoryPolicyTextBlock_4e231c75-e1f5-45a5-9c4c-5c63d488d21e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_b6bf3bc9-e543-40d5-823a-104bcad5e49d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_b6bf3bc9-e543-40d5-823a-104bcad5e49d" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_9ec5b7df-17f7-46aa-b6da-078bb925e424" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_9ec5b7df-17f7-46aa-b6da-078bb925e424" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeasesPolicyTextBlock_057f7684-c8b1-4d0a-8c5d-30eeb89b567a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeasesPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_LesseeLeasesPolicyTextBlock_057f7684-c8b1-4d0a-8c5d-30eeb89b567a" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxPolicyTextBlock_eb0fd8e1-75e5-45f1-99db-7aaf3d7c56b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_IncomeTaxPolicyTextBlock_eb0fd8e1-75e5-45f1-99db-7aaf3d7c56b5" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_07d8a95d-2018-4652-98f6-18495e66d1bb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsGoodwillPolicy_07d8a95d-2018-4652-98f6-18495e66d1bb" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_eff63346-0ba5-455d-8366-347d0ef9c2e3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsIntangibleAssetsPolicy_eff63346-0ba5-455d-8366-347d0ef9c2e3" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_c692e145-b977-4371-82b8-c0aa96646648" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerPolicyTextBlock_c692e145-b977-4371-82b8-c0aa96646648" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaintenanceCostPolicyPolicyTextBlock_2ffcbe2a-46d1-4144-9452-a3fece198f35" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MaintenanceCostPolicyPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_MaintenanceCostPolicyPolicyTextBlock_2ffcbe2a-46d1-4144-9452-a3fece198f35" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock_02d798d2-d927-441d-a4e0-8ffb306eb15a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock_02d798d2-d927-441d-a4e0-8ffb306eb15a" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_1f45d431-4a3b-4fff-814b-07cafbd0f94b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_1f45d431-4a3b-4fff-814b-07cafbd0f94b" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_9bd3e0b7-0ea5-4001-9c0b-3b900d0719a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_9bd3e0b7-0ea5-4001-9c0b-3b900d0719a8" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherCostAndExpenseOperatingPolicyTextBlock_f82a50ed-04d2-488f-903f-f0d632a45d25" xlink:href="aal-20211231.xsd#aal_OtherCostAndExpenseOperatingPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_aal_OtherCostAndExpenseOperatingPolicyTextBlock_f82a50ed-04d2-488f-903f-f0d632a45d25" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RegionalExpensesPolicyPolicyTextBlock_29dbc5a9-f23a-46ed-9db8-a0bac9794212" xlink:href="aal-20211231.xsd#aal_RegionalExpensesPolicyPolicyTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_aal_RegionalExpensesPolicyPolicyTextBlock_29dbc5a9-f23a-46ed-9db8-a0bac9794212" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable_b18e1479-b588-4d79-874d-cf1037efde46" xlink:href="aal-20211231.xsd#aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_2dbc70ef-03a2-4f43-93ca-f6260a6ac35c" xlink:to="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable_b18e1479-b588-4d79-874d-cf1037efde46" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ff743ab5-7fb7-46ef-9b83-7f74dbfb923e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable_b18e1479-b588-4d79-874d-cf1037efde46" xlink:to="loc_dei_LegalEntityAxis_ff743ab5-7fb7-46ef-9b83-7f74dbfb923e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ff743ab5-7fb7-46ef-9b83-7f74dbfb923e_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ff743ab5-7fb7-46ef-9b83-7f74dbfb923e" xlink:to="loc_dei_EntityDomain_ff743ab5-7fb7-46ef-9b83-7f74dbfb923e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e58ec5b7-c8ea-48ad-a028-5aebfc582082" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ff743ab5-7fb7-46ef-9b83-7f74dbfb923e" xlink:to="loc_dei_EntityDomain_e58ec5b7-c8ea-48ad-a028-5aebfc582082" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_e19799ec-3d3a-4268-a38f-b122fa7f868b" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e58ec5b7-c8ea-48ad-a028-5aebfc582082" xlink:to="loc_aal_AmericanAirlinesIncMember_e19799ec-3d3a-4268-a38f-b122fa7f868b" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesTables" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesTables" xlink:type="extended" id="i8dbb6fa63e9749f2b154cea3b9be6548_BasisofPresentationandSummaryofSignificantAccountingPoliciesTables">
<link:loc xlink:type="locator" xlink:label="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_74dffe3e-084d-40f4-ad52-84a86c62c62e" xlink:href="aal-20211231.xsd#aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_9309ae02-0d7f-4c79-8eeb-77a1c1bed32a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_74dffe3e-084d-40f4-ad52-84a86c62c62e" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_9309ae02-0d7f-4c79-8eeb-77a1c1bed32a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_a9103589-1bba-4487-a4af-c840f6fc963b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_74dffe3e-084d-40f4-ad52-84a86c62c62e" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_a9103589-1bba-4487-a4af-c840f6fc963b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_b24486e4-79c6-484f-b0c6-5ddc82028024" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_74dffe3e-084d-40f4-ad52-84a86c62c62e" xlink:to="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_b24486e4-79c6-484f-b0c6-5ddc82028024" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTableTextBlock_ea5ff92d-563b-49eb-951d-2148add54104" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisaggregationOfRevenueTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_74dffe3e-084d-40f4-ad52-84a86c62c62e" xlink:to="loc_us-gaap_DisaggregationOfRevenueTableTextBlock_ea5ff92d-563b-49eb-951d-2148add54104" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_63425d40-e65d-4aec-ac60-f133de730088" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_74dffe3e-084d-40f4-ad52-84a86c62c62e" xlink:to="loc_us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock_63425d40-e65d-4aec-ac60-f133de730088" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable_ea26193d-2ff2-46c5-aa9d-3ca49cf91f21" xlink:href="aal-20211231.xsd#aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems_74dffe3e-084d-40f4-ad52-84a86c62c62e" xlink:to="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable_ea26193d-2ff2-46c5-aa9d-3ca49cf91f21" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4beb5056-cc92-4592-b116-6a29a3e02553" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_OrganizationBasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable_ea26193d-2ff2-46c5-aa9d-3ca49cf91f21" xlink:to="loc_dei_LegalEntityAxis_4beb5056-cc92-4592-b116-6a29a3e02553" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4beb5056-cc92-4592-b116-6a29a3e02553_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4beb5056-cc92-4592-b116-6a29a3e02553" xlink:to="loc_dei_EntityDomain_4beb5056-cc92-4592-b116-6a29a3e02553_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a61b9f46-d727-4f8b-81e7-22b74f87e1a5" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4beb5056-cc92-4592-b116-6a29a3e02553" xlink:to="loc_dei_EntityDomain_a61b9f46-d727-4f8b-81e7-22b74f87e1a5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_91ec2d5f-fc84-4154-99d5-43f05ed86098" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a61b9f46-d727-4f8b-81e7-22b74f87e1a5" xlink:to="loc_aal_AmericanAirlinesIncMember_91ec2d5f-fc84-4154-99d5-43f05ed86098" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesAdditionalInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesAdditionalInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesAdditionalInformationDetails" xlink:type="extended" id="i21dd7cbe50934e9b98f583ad91c22e42_BasisofPresentationandSummaryofSignificantAccountingPoliciesAdditionalInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnusualOrInfrequentItemLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DecreaseInFlightTravelComparedtoPriorYear_a86361c4-b5f7-4878-9d13-b6e69a95c1f4" xlink:href="aal-20211231.xsd#aal_DecreaseInFlightTravelComparedtoPriorYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_DecreaseInFlightTravelComparedtoPriorYear_a86361c4-b5f7-4878-9d13-b6e69a95c1f4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DecreaseInFlightTravelComparedToPriorYearDomesticCapacityPercentage_63f17eab-e8db-4c18-a604-c87305d2ef87" xlink:href="aal-20211231.xsd#aal_DecreaseInFlightTravelComparedToPriorYearDomesticCapacityPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_DecreaseInFlightTravelComparedToPriorYearDomesticCapacityPercentage_63f17eab-e8db-4c18-a604-c87305d2ef87" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DecreaseInFlightTravelComparedToPriorYearLongHaulInternationalCapacityPercentage_5c131f68-ed1d-4a1c-80cc-5a454458b95a" xlink:href="aal-20211231.xsd#aal_DecreaseInFlightTravelComparedToPriorYearLongHaulInternationalCapacityPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_DecreaseInFlightTravelComparedToPriorYearLongHaulInternationalCapacityPercentage_5c131f68-ed1d-4a1c-80cc-5a454458b95a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfTeamMembersOptingForEarlyRetirementOrLongTermPaidLeave_1b213eef-c638-486b-9ca8-96f13fe17f57" xlink:href="aal-20211231.xsd#aal_NumberOfTeamMembersOptingForEarlyRetirementOrLongTermPaidLeave"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_NumberOfTeamMembersOptingForEarlyRetirementOrLongTermPaidLeave_1b213eef-c638-486b-9ca8-96f13fe17f57" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AvailableLiquidity_6e888e4a-1383-4124-a1d9-13e391e267ee" xlink:href="aal-20211231.xsd#aal_AvailableLiquidity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_AvailableLiquidity_6e888e4a-1383-4124-a1d9-13e391e267ee" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsAndShortTermInvestments_e6d9a710-58c9-4b4d-a381-030d08df29bf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsAndShortTermInvestments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_CashCashEquivalentsAndShortTermInvestments_e6d9a710-58c9-4b4d-a381-030d08df29bf" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_1c0f0060-810b-43a1-8d9d-aa9702119a6e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_1c0f0060-810b-43a1-8d9d-aa9702119a6e" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_6dfde959-4fe0-4ed7-af42-ee4539970d4a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_6dfde959-4fe0-4ed7-af42-ee4539970d4a" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_69e69f4c-5616-4b82-a43d-93cce78d7c91" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_69e69f4c-5616-4b82-a43d-93cce78d7c91" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_0137397c-a35e-4527-9c3f-4cebbe325ea6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_0137397c-a35e-4527-9c3f-4cebbe325ea6" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_cfb2fc47-4abd-44ad-83dc-d423838d4e4e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_cfb2fc47-4abd-44ad-83dc-d423838d4e4e" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_cd898bca-a56f-4d1f-b4fc-06b798601094" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_cd898bca-a56f-4d1f-b4fc-06b798601094" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssuedPricePerShare_2dab512c-595a-4070-a8df-bf93ec88bc5f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharesIssuedPricePerShare"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_SharesIssuedPricePerShare_2dab512c-595a-4070-a8df-bf93ec88bc5f" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_79d9410c-f343-408d-a3ac-1390677cab4b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_79d9410c-f343-408d-a3ac-1390677cab4b" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommonStockSharesAuthorizedRemainingAuthorizedAmount_53f4680b-0f2b-40bb-accf-5c15d51a0653" xlink:href="aal-20211231.xsd#aal_CommonStockSharesAuthorizedRemainingAuthorizedAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_CommonStockSharesAuthorizedRemainingAuthorizedAmount_53f4680b-0f2b-40bb-accf-5c15d51a0653" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfDebt_a8f4afb7-f10f-4255-8eb7-04655ce0eff1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfDebt_a8f4afb7-f10f-4255-8eb7-04655ce0eff1" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_464c5700-82c4-4480-a195-f73f132fe856" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_464c5700-82c4-4480-a195-f73f132fe856" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsFromSaleLeasebackTransactions_6d8ac34b-a26f-4ba4-9f83-3b2195ca096f" xlink:href="aal-20211231.xsd#aal_ProceedsFromSaleLeasebackTransactions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_ProceedsFromSaleLeasebackTransactions_6d8ac34b-a26f-4ba4-9f83-3b2195ca096f" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsFromGovernmentAssistancePayrollSupportProgramCARESAct_e87b3158-2a0d-4197-b344-1c3ce6081bd7" xlink:href="aal-20211231.xsd#aal_ProceedsFromGovernmentAssistancePayrollSupportProgramCARESAct"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_ProceedsFromGovernmentAssistancePayrollSupportProgramCARESAct_e87b3158-2a0d-4197-b344-1c3ce6081bd7" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ClassOfWarrantOrRightNumberOfSharesCalledByWarrantsAuthorized_2ea5118e-0e3a-4c46-8c96-1a8a6a0c2d8a" xlink:href="aal-20211231.xsd#aal_ClassOfWarrantOrRightNumberOfSharesCalledByWarrantsAuthorized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_ClassOfWarrantOrRightNumberOfSharesCalledByWarrantsAuthorized_2ea5118e-0e3a-4c46-8c96-1a8a6a0c2d8a" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LineOfCreditFacilityCovenantTermsMinimumAggregateLiquidityRequired_e459d723-9993-455f-9fe2-8d38b5b68632" xlink:href="aal-20211231.xsd#aal_LineOfCreditFacilityCovenantTermsMinimumAggregateLiquidityRequired"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_LineOfCreditFacilityCovenantTermsMinimumAggregateLiquidityRequired_e459d723-9993-455f-9fe2-8d38b5b68632" xlink:type="arc" order="20"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_9c283844-1682-46a4-8b9d-8ae2f9d1f02d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_9c283844-1682-46a4-8b9d-8ae2f9d1f02d" xlink:type="arc" order="21"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ClassOfWarrantOrRightFairValueOfWarrantsOrRights_acd68fee-0025-4dbd-bcd1-b021869f3b71" xlink:href="aal-20211231.xsd#aal_ClassOfWarrantOrRightFairValueOfWarrantsOrRights"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_ClassOfWarrantOrRightFairValueOfWarrantsOrRights_acd68fee-0025-4dbd-bcd1-b021869f3b71" xlink:type="arc" order="22"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt_3fd08875-4538-4452-b156-1e21ed31f22d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt_3fd08875-4538-4452-b156-1e21ed31f22d" xlink:type="arc" order="23"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtNetOfTaxAndOfferingCosts_48c1ede8-25e6-4378-83bc-28ffb98a37c6" xlink:href="aal-20211231.xsd#aal_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtNetOfTaxAndOfferingCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebtNetOfTaxAndOfferingCosts_48c1ede8-25e6-4378-83bc-28ffb98a37c6" xlink:type="arc" order="24"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_56c3a9cf-6de6-44fb-b819-ee21f6352cf9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_56c3a9cf-6de6-44fb-b819-ee21f6352cf9" xlink:type="arc" order="25"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_14afc6ee-d1e3-4125-8cd9-7336733509e8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_14afc6ee-d1e3-4125-8cd9-7336733509e8" xlink:type="arc" order="26"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportingUnits_692c2436-d901-4dc2-9a70-bea9369f3ad4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NumberOfReportingUnits"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_NumberOfReportingUnits_692c2436-d901-4dc2-9a70-bea9369f3ad4" xlink:type="arc" order="27"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_9d0a0297-1bef-4591-8c19-078f4c184245" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GoodwillImpairmentLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_9d0a0297-1bef-4591-8c19-078f4c184245" xlink:type="arc" order="28"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_d9591693-6f82-4d5b-baa2-b79e6b76de84" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_Goodwill_d9591693-6f82-4d5b-baa2-b79e6b76de84" xlink:type="arc" order="29"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_d64b106d-32ab-4077-843c-294d4378cbe3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_d64b106d-32ab-4077-843c-294d4378cbe3" xlink:type="arc" order="30"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_b7f3c2cb-a6e1-4cd4-90c6-aa6787907ffa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_b7f3c2cb-a6e1-4cd4-90c6-aa6787907ffa" xlink:type="arc" order="31"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_c6add0f8-0f9f-4e6a-801b-19a55b9f2459" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_c6add0f8-0f9f-4e6a-801b-19a55b9f2459" xlink:type="arc" order="32"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RevenuePerformanceObligationTerm_2adce200-32f9-4bdc-9c96-ed66bfec75a2" xlink:href="aal-20211231.xsd#aal_RevenuePerformanceObligationTerm"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_RevenuePerformanceObligationTerm_2adce200-32f9-4bdc-9c96-ed66bfec75a2" xlink:type="arc" order="33"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RevenuePerformanceObligationPaymentTerm_7c4e4b92-1efb-49d3-a0ea-a2617e5991ed" xlink:href="aal-20211231.xsd#aal_RevenuePerformanceObligationPaymentTerm"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_RevenuePerformanceObligationPaymentTerm_7c4e4b92-1efb-49d3-a0ea-a2617e5991ed" xlink:type="arc" order="34"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfRevenueComponents_9e6b3b09-51c1-4300-9872-369928c24753" xlink:href="aal-20211231.xsd#aal_NumberOfRevenueComponents"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_NumberOfRevenueComponents_9e6b3b09-51c1-4300-9872-369928c24753" xlink:type="arc" order="35"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_77fb6dd4-0a4b-41b6-96e9-fb299a0d1013" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_77fb6dd4-0a4b-41b6-96e9-fb299a0d1013" xlink:type="arc" order="36"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ContractWithCustomerLiabilityUpdatedRevenueRecognitionPeriod_9f06e52d-2eee-416c-92ec-f9dbbdc6b3ca" xlink:href="aal-20211231.xsd#aal_ContractWithCustomerLiabilityUpdatedRevenueRecognitionPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_ContractWithCustomerLiabilityUpdatedRevenueRecognitionPeriod_9f06e52d-2eee-416c-92ec-f9dbbdc6b3ca" xlink:type="arc" order="37"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_7bd1fe20-a6ed-4538-b416-89799682b314" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_7bd1fe20-a6ed-4538-b416-89799682b314" xlink:type="arc" order="38"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ContractReceivablesSettlementDuration_83e8d461-d98c-4d26-ba70-9389f4cd0d0a" xlink:href="aal-20211231.xsd#aal_ContractReceivablesSettlementDuration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_aal_ContractReceivablesSettlementDuration_83e8d461-d98c-4d26-ba70-9389f4cd0d0a" xlink:type="arc" order="39"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketingAndAdvertisingExpense_27f7acd6-4df1-43c2-86ce-ec6ab67025da" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MarketingAndAdvertisingExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_MarketingAndAdvertisingExpense_27f7acd6-4df1-43c2-86ce-ec6ab67025da" xlink:type="arc" order="40"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized_66e7ad4a-5316-4aa6-9634-995b34c95660" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossRealized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossRealized_66e7ad4a-5316-4aa6-9634-995b34c95660" xlink:type="arc" order="41"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnusualOrInfrequentItemTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_UnusualOrInfrequentItemLineItems_aa481f8b-c2de-4aa8-91ef-9eef7b12c832" xlink:to="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_054b0ff2-b1ff-4eb4-8086-bc1ada36f098" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:to="loc_us-gaap_CreditFacilityAxis_054b0ff2-b1ff-4eb4-8086-bc1ada36f098" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_054b0ff2-b1ff-4eb4-8086-bc1ada36f098_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_054b0ff2-b1ff-4eb4-8086-bc1ada36f098" xlink:to="loc_us-gaap_CreditFacilityDomain_054b0ff2-b1ff-4eb4-8086-bc1ada36f098_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_98533636-1e3c-4b16-b63e-a960b92d7bb0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_054b0ff2-b1ff-4eb4-8086-bc1ada36f098" xlink:to="loc_us-gaap_CreditFacilityDomain_98533636-1e3c-4b16-b63e-a960b92d7bb0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_37a8a899-8254-42ee-a406-feef30fbd02a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_98533636-1e3c-4b16-b63e-a960b92d7bb0" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_37a8a899-8254-42ee-a406-feef30fbd02a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_c1e7e786-7773-4ddf-88ef-b5ebb9ca108d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_98533636-1e3c-4b16-b63e-a960b92d7bb0" xlink:to="loc_us-gaap_LineOfCreditMember_c1e7e786-7773-4ddf-88ef-b5ebb9ca108d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_8cfece27-2841-4428-88b7-ab1dbca390c0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_8cfece27-2841-4428-88b7-ab1dbca390c0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_8cfece27-2841-4428-88b7-ab1dbca390c0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_8cfece27-2841-4428-88b7-ab1dbca390c0" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_8cfece27-2841-4428-88b7-ab1dbca390c0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4fa38b24-3d77-404f-a18d-de892cd459d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_8cfece27-2841-4428-88b7-ab1dbca390c0" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4fa38b24-3d77-404f-a18d-de892cd459d4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_2325dafa-dd44-4b28-ad46-ace96a0418e1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4fa38b24-3d77-404f-a18d-de892cd459d4" xlink:to="loc_us-gaap_SeniorNotesMember_2325dafa-dd44-4b28-ad46-ace96a0418e1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_ef999235-2631-443a-83c9-f0eed829c555" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4fa38b24-3d77-404f-a18d-de892cd459d4" xlink:to="loc_us-gaap_SecuredDebtMember_ef999235-2631-443a-83c9-f0eed829c555" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_a6d26867-e404-4621-800c-437dde669e4f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:to="loc_us-gaap_DebtInstrumentAxis_a6d26867-e404-4621-800c-437dde669e4f" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a6d26867-e404-4621-800c-437dde669e4f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_a6d26867-e404-4621-800c-437dde669e4f" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a6d26867-e404-4621-800c-437dde669e4f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_a6d26867-e404-4621-800c-437dde669e4f" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ShortTermRevolvingAndOtherFacilitiesMember_cd89d8be-3f3b-43a6-a4c8-8b7724d073b7" xlink:href="aal-20211231.xsd#aal_ShortTermRevolvingAndOtherFacilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_ShortTermRevolvingAndOtherFacilitiesMember_cd89d8be-3f3b-43a6-a4c8-8b7724d073b7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote550Matures2026Member_4eb235bb-3e96-4801-b1ae-93870752d093" xlink:href="aal-20211231.xsd#aal_SeniorNote550Matures2026Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_SeniorNote550Matures2026Member_4eb235bb-3e96-4801-b1ae-93870752d093" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote575Matures2029Member_419cb1d8-0ec8-4c76-abab-0c7dd97a66dc" xlink:href="aal-20211231.xsd#aal_SeniorNote575Matures2029Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_SeniorNote575Matures2029Member_419cb1d8-0ec8-4c76-abab-0c7dd97a66dc" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_TermLoanFacilityMember_8a4a8347-cd37-4edb-aba1-de384444cb5b" xlink:href="aal-20211231.xsd#aal_TermLoanFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_TermLoanFacilityMember_8a4a8347-cd37-4edb-aba1-de384444cb5b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2013Member_aa29562f-bc4e-40f3-a672-6e09487c495f" xlink:href="aal-20211231.xsd#aal_CreditFacility2013Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_CreditFacility2013Member_aa29562f-bc4e-40f3-a672-6e09487c495f" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2014Member_b0641751-a772-439c-a4af-9dd6e0cda41d" xlink:href="aal-20211231.xsd#aal_CreditFacility2014Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_CreditFacility2014Member_b0641751-a772-439c-a4af-9dd6e0cda41d" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacilityApril2016Member_20259d2c-3537-4204-8572-be9da85adf50" xlink:href="aal-20211231.xsd#aal_CreditFacilityApril2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_CreditFacilityApril2016Member_20259d2c-3537-4204-8572-be9da85adf50" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_TreasuryLoanAgreementCARESActMember_7e86fb14-9a66-4a18-8bbd-0bf858e0a66b" xlink:href="aal-20211231.xsd#aal_TreasuryLoanAgreementCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_TreasuryLoanAgreementCARESActMember_7e86fb14-9a66-4a18-8bbd-0bf858e0a66b" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EnhancedEquipmentTrustCertificatesAndOtherEquipmentFinancingMember_d6a05843-fed4-4f9a-a286-9e688fe3ddd8" xlink:href="aal-20211231.xsd#aal_EnhancedEquipmentTrustCertificatesAndOtherEquipmentFinancingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_EnhancedEquipmentTrustCertificatesAndOtherEquipmentFinancingMember_d6a05843-fed4-4f9a-a286-9e688fe3ddd8" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SpecialFacilityRevenueBondsMember_33046f73-1e61-49e4-8323-f8b875003ee3" xlink:href="aal-20211231.xsd#aal_SpecialFacilityRevenueBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_SpecialFacilityRevenueBondsMember_33046f73-1e61-49e4-8323-f8b875003ee3" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EquipmentLoansandOtherNotesPayableMaturing2029Through2032Member_7357e8d7-e7d8-4843-b19b-80080b5faf6e" xlink:href="aal-20211231.xsd#aal_EquipmentLoansandOtherNotesPayableMaturing2029Through2032Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_EquipmentLoansandOtherNotesPayableMaturing2029Through2032Member_7357e8d7-e7d8-4843-b19b-80080b5faf6e" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_be35dfb6-cdce-4fe5-b69b-d6b55ba355ec" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteOneCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_be35dfb6-cdce-4fe5-b69b-d6b55ba355ec" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember_a7cebf3c-0434-49d4-9bc7-17e4bac6efd4" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember_a7cebf3c-0434-49d4-9bc7-17e4bac6efd4" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember_7ec3f3d5-7718-46b0-a00b-eca50321b630" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember_7ec3f3d5-7718-46b0-a00b-eca50321b630" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramTwoWarrantsCARESActMember_c21c0e00-44d2-4390-af9e-2b5a7af01cb9" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramTwoWarrantsCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_PayrollSupportProgramTwoWarrantsCARESActMember_c21c0e00-44d2-4390-af9e-2b5a7af01cb9" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramThreeWarrantsCARESActMember_fb625407-2cfb-40bf-b53a-c604d229513e" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramThreeWarrantsCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_PayrollSupportProgramThreeWarrantsCARESActMember_fb625407-2cfb-40bf-b53a-c604d229513e" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherPSP1FinancialAssistanceCARESActMember_102ea43c-4031-4c5b-9618-8310712324cd" xlink:href="aal-20211231.xsd#aal_OtherPSP1FinancialAssistanceCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_OtherPSP1FinancialAssistanceCARESActMember_102ea43c-4031-4c5b-9618-8310712324cd" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherPayrollSupportProgramTwoFinancialAssistanceCARESActMember_5e9a3034-6ab5-48da-a6bb-344b83225b7f" xlink:href="aal-20211231.xsd#aal_OtherPayrollSupportProgramTwoFinancialAssistanceCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_OtherPayrollSupportProgramTwoFinancialAssistanceCARESActMember_5e9a3034-6ab5-48da-a6bb-344b83225b7f" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherPayrollSupportProgramThreeFinancialAssistanceCARESActMember_2237c39d-9fe8-4add-8950-472534e428b5" xlink:href="aal-20211231.xsd#aal_OtherPayrollSupportProgramThreeFinancialAssistanceCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_OtherPayrollSupportProgramThreeFinancialAssistanceCARESActMember_2237c39d-9fe8-4add-8950-472534e428b5" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes6.50Due2025Member_625e6646-463d-489d-9b73-f7ba3e819c98" xlink:href="aal-20211231.xsd#aal_SeniorNotes6.50Due2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_SeniorNotes6.50Due2025Member_625e6646-463d-489d-9b73-f7ba3e819c98" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SparePartsCreditFacilityApril2016Member_3ada3a2f-36e2-4c16-93e1-7df3b6647190" xlink:href="aal-20211231.xsd#aal_SparePartsCreditFacilityApril2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_bc95c504-4ac7-4998-a205-76b0e2bc3a2f" xlink:to="loc_aal_SparePartsCreditFacilityApril2016Member_3ada3a2f-36e2-4c16-93e1-7df3b6647190" xlink:type="arc" order="20"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis_57111c2f-0079-479a-af8b-2b2ea6352643" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:to="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis_57111c2f-0079-479a-af8b-2b2ea6352643" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_57111c2f-0079-479a-af8b-2b2ea6352643_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis_57111c2f-0079-479a-af8b-2b2ea6352643" xlink:to="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_57111c2f-0079-479a-af8b-2b2ea6352643_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_7586d474-e7be-4f8e-8617-41c1877c9f0a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis_57111c2f-0079-479a-af8b-2b2ea6352643" xlink:to="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_7586d474-e7be-4f8e-8617-41c1877c9f0a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_USDepartmentOfTheTreasuryCARESActPayrollSupportProgramTwoMember_379da742-f04b-49d0-b69a-de9985966aa8" xlink:href="aal-20211231.xsd#aal_USDepartmentOfTheTreasuryCARESActPayrollSupportProgramTwoMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_7586d474-e7be-4f8e-8617-41c1877c9f0a" xlink:to="loc_aal_USDepartmentOfTheTreasuryCARESActPayrollSupportProgramTwoMember_379da742-f04b-49d0-b69a-de9985966aa8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_USDepartmentOfTheTreasuryCARESActPayrollSupportProgramThreeMember_428e4dc8-6004-4488-9364-f86152134d1d" xlink:href="aal-20211231.xsd#aal_USDepartmentOfTheTreasuryCARESActPayrollSupportProgramThreeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_7586d474-e7be-4f8e-8617-41c1877c9f0a" xlink:to="loc_aal_USDepartmentOfTheTreasuryCARESActPayrollSupportProgramThreeMember_428e4dc8-6004-4488-9364-f86152134d1d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_USDepartmentOfTheTreasuryCARESActPayrollSupportProgramOneMember_d15b6fea-d161-4d37-849a-0d9177b0834e" xlink:href="aal-20211231.xsd#aal_USDepartmentOfTheTreasuryCARESActPayrollSupportProgramOneMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesDomain_7586d474-e7be-4f8e-8617-41c1877c9f0a" xlink:to="loc_aal_USDepartmentOfTheTreasuryCARESActPayrollSupportProgramOneMember_d15b6fea-d161-4d37-849a-0d9177b0834e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_bcb8fa57-6238-4311-a486-90b4a9527880" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:to="loc_us-gaap_SubsidiarySaleOfStockAxis_bcb8fa57-6238-4311-a486-90b4a9527880" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_bcb8fa57-6238-4311-a486-90b4a9527880_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_bcb8fa57-6238-4311-a486-90b4a9527880" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_bcb8fa57-6238-4311-a486-90b4a9527880_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_e7be234d-3710-4af9-8ef9-d5f7d76d1316" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_bcb8fa57-6238-4311-a486-90b4a9527880" xlink:to="loc_us-gaap_SaleOfStockNameOfTransactionDomain_e7be234d-3710-4af9-8ef9-d5f7d76d1316" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AtTheMarketOfferingMember_6fb6c3b4-58bc-416c-b286-770b6fffffea" xlink:href="aal-20211231.xsd#aal_AtTheMarketOfferingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_e7be234d-3710-4af9-8ef9-d5f7d76d1316" xlink:to="loc_aal_AtTheMarketOfferingMember_6fb6c3b4-58bc-416c-b286-770b6fffffea" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_eb0aed8d-4a85-48f1-9d33-32da14f067d8" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_eb0aed8d-4a85-48f1-9d33-32da14f067d8" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_eb0aed8d-4a85-48f1-9d33-32da14f067d8_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_eb0aed8d-4a85-48f1-9d33-32da14f067d8" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_eb0aed8d-4a85-48f1-9d33-32da14f067d8_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_c0aee626-b4f0-412a-bdef-4fb8144940a0" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_eb0aed8d-4a85-48f1-9d33-32da14f067d8" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_c0aee626-b4f0-412a-bdef-4fb8144940a0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_60203cc9-0224-4a4e-8d7e-969f939e8075" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_c0aee626-b4f0-412a-bdef-4fb8144940a0" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_60203cc9-0224-4a4e-8d7e-969f939e8075" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_f658cb00-d130-4e4a-848a-78d65e66302e" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:to="loc_srt_ProductOrServiceAxis_f658cb00-d130-4e4a-848a-78d65e66302e" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_f658cb00-d130-4e4a-848a-78d65e66302e_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_f658cb00-d130-4e4a-848a-78d65e66302e" xlink:to="loc_srt_ProductsAndServicesDomain_f658cb00-d130-4e4a-848a-78d65e66302e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_bf314cab-8577-4599-a5b5-938a8c94f4bc" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_f658cb00-d130-4e4a-848a-78d65e66302e" xlink:to="loc_srt_ProductsAndServicesDomain_bf314cab-8577-4599-a5b5-938a8c94f4bc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AirTrafficMember_2fdeb4a6-f685-43a4-9080-0ddac8faa75c" xlink:href="aal-20211231.xsd#aal_AirTrafficMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_bf314cab-8577-4599-a5b5-938a8c94f4bc" xlink:to="loc_aal_AirTrafficMember_2fdeb4a6-f685-43a4-9080-0ddac8faa75c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramMember_fea68e68-38ef-4d9d-b8f3-50e82a73d9e7" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_bf314cab-8577-4599-a5b5-938a8c94f4bc" xlink:to="loc_aal_LoyaltyProgramMember_fea68e68-38ef-4d9d-b8f3-50e82a73d9e7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_3d72ed72-ea26-4b92-86ad-5a0bd190cbbf" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:to="loc_srt_RangeAxis_3d72ed72-ea26-4b92-86ad-5a0bd190cbbf" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_3d72ed72-ea26-4b92-86ad-5a0bd190cbbf_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_3d72ed72-ea26-4b92-86ad-5a0bd190cbbf" xlink:to="loc_srt_RangeMember_3d72ed72-ea26-4b92-86ad-5a0bd190cbbf_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f67e4509-34ec-481e-980d-c313ba9f2367" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_3d72ed72-ea26-4b92-86ad-5a0bd190cbbf" xlink:to="loc_srt_RangeMember_f67e4509-34ec-481e-980d-c313ba9f2367" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_fc4e7f60-3621-48ac-b157-4a3bef1a1aa0" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f67e4509-34ec-481e-980d-c313ba9f2367" xlink:to="loc_srt_MinimumMember_fc4e7f60-3621-48ac-b157-4a3bef1a1aa0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_a387fd6d-3537-4dc3-879f-3c91000c40bf" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f67e4509-34ec-481e-980d-c313ba9f2367" xlink:to="loc_srt_MaximumMember_a387fd6d-3537-4dc3-879f-3c91000c40bf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_0178744f-cb41-47ba-aad3-297e6bc52b51" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnusualOrInfrequentItemTable_34ea79db-b975-48b0-8e8d-c1b557228c1e" xlink:to="loc_dei_LegalEntityAxis_0178744f-cb41-47ba-aad3-297e6bc52b51" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0178744f-cb41-47ba-aad3-297e6bc52b51_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_0178744f-cb41-47ba-aad3-297e6bc52b51" xlink:to="loc_dei_EntityDomain_0178744f-cb41-47ba-aad3-297e6bc52b51_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7d9027d8-e0f4-4d19-9fba-13e3085ecb51" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_0178744f-cb41-47ba-aad3-297e6bc52b51" xlink:to="loc_dei_EntityDomain_7d9027d8-e0f4-4d19-9fba-13e3085ecb51" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_cf6397b5-181c-4e71-8e5f-5abbb4e8b8a6" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7d9027d8-e0f4-4d19-9fba-13e3085ecb51" xlink:to="loc_aal_AmericanAirlinesIncMember_cf6397b5-181c-4e71-8e5f-5abbb4e8b8a6" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesOperatingPropertyandEquipmentDetail" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesOperatingPropertyandEquipmentDetail"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesOperatingPropertyandEquipmentDetail" xlink:type="extended" id="ie6810efaccc843d8a2ce1eb170a28dd9_BasisofPresentationandSummaryofSignificantAccountingPoliciesOperatingPropertyandEquipmentDetail">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_f0b4c68b-18a6-419d-99cf-4a9360501dbb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage_39b606c7-9c75-4dac-8673-beaac73f3401" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_f0b4c68b-18a6-419d-99cf-4a9360501dbb" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage_39b606c7-9c75-4dac-8673-beaac73f3401" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_8384809a-a88e-46b2-9650-9829d26fb4cd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_f0b4c68b-18a6-419d-99cf-4a9360501dbb" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_8384809a-a88e-46b2-9650-9829d26fb4cd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_93e273ea-ee0d-4bc2-9176-7176be5d232f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_f0b4c68b-18a6-419d-99cf-4a9360501dbb" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_93e273ea-ee0d-4bc2-9176-7176be5d232f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetImpairmentCharges_aee2377d-e0ca-40d0-92f0-447f52bb5bf8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetImpairmentCharges"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_f0b4c68b-18a6-419d-99cf-4a9360501dbb" xlink:to="loc_us-gaap_AssetImpairmentCharges_aee2377d-e0ca-40d0-92f0-447f52bb5bf8" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PropertyPlantAndEquipmentRetiredAircraftToBeSold_cd0f5720-ca64-4de8-a411-c0d44c365382" xlink:href="aal-20211231.xsd#aal_PropertyPlantAndEquipmentRetiredAircraftToBeSold"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_f0b4c68b-18a6-419d-99cf-4a9360501dbb" xlink:to="loc_aal_PropertyPlantAndEquipmentRetiredAircraftToBeSold_cd0f5720-ca64-4de8-a411-c0d44c365382" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PropertyPlantAndEquipmentNonoperatingRetiredAircraft_c1e813e7-2ae1-4a26-8714-085513f997fb" xlink:href="aal-20211231.xsd#aal_PropertyPlantAndEquipmentNonoperatingRetiredAircraft"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_f0b4c68b-18a6-419d-99cf-4a9360501dbb" xlink:to="loc_aal_PropertyPlantAndEquipmentNonoperatingRetiredAircraft_c1e813e7-2ae1-4a26-8714-085513f997fb" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_0a9edab1-4f61-4afd-bb38-e99b4f0c8c56" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_f0b4c68b-18a6-419d-99cf-4a9360501dbb" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_0a9edab1-4f61-4afd-bb38-e99b4f0c8c56" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_170c837a-52e3-4ecb-b853-f5adae42f975" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_0a9edab1-4f61-4afd-bb38-e99b4f0c8c56" xlink:to="loc_dei_LegalEntityAxis_170c837a-52e3-4ecb-b853-f5adae42f975" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_170c837a-52e3-4ecb-b853-f5adae42f975_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_170c837a-52e3-4ecb-b853-f5adae42f975" xlink:to="loc_dei_EntityDomain_170c837a-52e3-4ecb-b853-f5adae42f975_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_28c8b107-a4cd-4249-92c9-f7a17cebbbc2" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_170c837a-52e3-4ecb-b853-f5adae42f975" xlink:to="loc_dei_EntityDomain_28c8b107-a4cd-4249-92c9-f7a17cebbbc2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_ca1f7ec8-9b71-45fb-b640-7a5a6a23bfa3" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_28c8b107-a4cd-4249-92c9-f7a17cebbbc2" xlink:to="loc_aal_AmericanAirlinesIncMember_ca1f7ec8-9b71-45fb-b640-7a5a6a23bfa3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_23d2760c-7d7b-4717-908c-40b2ea0b5fa5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_0a9edab1-4f61-4afd-bb38-e99b4f0c8c56" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_23d2760c-7d7b-4717-908c-40b2ea0b5fa5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_23d2760c-7d7b-4717-908c-40b2ea0b5fa5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_23d2760c-7d7b-4717-908c-40b2ea0b5fa5" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_23d2760c-7d7b-4717-908c-40b2ea0b5fa5_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_474898d5-7e6f-44c4-9106-0253180fc75a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_23d2760c-7d7b-4717-908c-40b2ea0b5fa5" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_474898d5-7e6f-44c4-9106-0253180fc75a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_67c71b3f-a24e-470d-a879-8cfc8e4ab55a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_474898d5-7e6f-44c4-9106-0253180fc75a" xlink:to="loc_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_67c71b3f-a24e-470d-a879-8cfc8e4ab55a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsMember_8e7058b1-609b-4034-8ced-198f188edb65" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_474898d5-7e6f-44c4-9106-0253180fc75a" xlink:to="loc_us-gaap_OtherAssetsMember_8e7058b1-609b-4034-8ced-198f188edb65" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_bf6ffbac-92f6-4fdb-9946-44a9cb725178" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_0a9edab1-4f61-4afd-bb38-e99b4f0c8c56" xlink:to="loc_srt_RangeAxis_bf6ffbac-92f6-4fdb-9946-44a9cb725178" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_bf6ffbac-92f6-4fdb-9946-44a9cb725178_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_bf6ffbac-92f6-4fdb-9946-44a9cb725178" xlink:to="loc_srt_RangeMember_bf6ffbac-92f6-4fdb-9946-44a9cb725178_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_757b6787-b2b2-4c46-baee-a59f4af04fba" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_bf6ffbac-92f6-4fdb-9946-44a9cb725178" xlink:to="loc_srt_RangeMember_757b6787-b2b2-4c46-baee-a59f4af04fba" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_6a8af055-ac64-4c0d-8001-b044c7c0b7be" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_757b6787-b2b2-4c46-baee-a59f4af04fba" xlink:to="loc_srt_MinimumMember_6a8af055-ac64-4c0d-8001-b044c7c0b7be" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_5a69b40e-56e5-4532-8c89-7e1af939e60c" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_757b6787-b2b2-4c46-baee-a59f4af04fba" xlink:to="loc_srt_MaximumMember_5a69b40e-56e5-4532-8c89-7e1af939e60c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_b7d23d02-c655-4717-b994-e95d15a819fa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_0a9edab1-4f61-4afd-bb38-e99b4f0c8c56" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_b7d23d02-c655-4717-b994-e95d15a819fa" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_b7d23d02-c655-4717-b994-e95d15a819fa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_b7d23d02-c655-4717-b994-e95d15a819fa" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_b7d23d02-c655-4717-b994-e95d15a819fa_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0c808866-d86a-4133-82b8-52144da8c02d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_b7d23d02-c655-4717-b994-e95d15a819fa" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0c808866-d86a-4133-82b8-52144da8c02d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AircraftEnginesAndRelatedRotablePartsMember_6c7e8dd8-4818-4c79-9935-b0f6aa75ec63" xlink:href="aal-20211231.xsd#aal_AircraftEnginesAndRelatedRotablePartsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0c808866-d86a-4133-82b8-52144da8c02d" xlink:to="loc_aal_AircraftEnginesAndRelatedRotablePartsMember_6c7e8dd8-4818-4c79-9935-b0f6aa75ec63" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_aa12e687-b883-4aae-a8d0-cdb05e71b80d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0c808866-d86a-4133-82b8-52144da8c02d" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_aa12e687-b883-4aae-a8d0-cdb05e71b80d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_9bf2eb35-95fd-45c1-bf8b-98779dbb26ea" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FurnitureAndFixturesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0c808866-d86a-4133-82b8-52144da8c02d" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_9bf2eb35-95fd-45c1-bf8b-98779dbb26ea" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CapitalizedSoftwareMember_20aa16b5-93ab-45df-824a-78d0b8e5f3d5" xlink:href="aal-20211231.xsd#aal_CapitalizedSoftwareMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_0c808866-d86a-4133-82b8-52144da8c02d" xlink:to="loc_aal_CapitalizedSoftwareMember_20aa16b5-93ab-45df-824a-78d0b8e5f3d5" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesDefiniteLivedIntangibleAssetsDetail" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesDefiniteLivedIntangibleAssetsDetail"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesDefiniteLivedIntangibleAssetsDetail" xlink:type="extended" id="ie3018dc189044635836efe353c8fe97d_BasisofPresentationandSummaryofSignificantAccountingPoliciesDefiniteLivedIntangibleAssetsDetail">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4a12199e-baac-47e3-ae11-8b96f7161c06" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_e5e10d70-5cec-4f8b-9f95-346c3719aa4b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4a12199e-baac-47e3-ae11-8b96f7161c06" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_e5e10d70-5cec-4f8b-9f95-346c3719aa4b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_4495544e-936a-4579-a8c0-5f9199215f1a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4a12199e-baac-47e3-ae11-8b96f7161c06" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_4495544e-936a-4579-a8c0-5f9199215f1a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1760a4c6-e45d-4edc-b03c-cab3cea01495" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4a12199e-baac-47e3-ae11-8b96f7161c06" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1760a4c6-e45d-4edc-b03c-cab3cea01495" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_9fbfb894-8a43-47a3-8eee-9127391be848" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4a12199e-baac-47e3-ae11-8b96f7161c06" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_9fbfb894-8a43-47a3-8eee-9127391be848" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_d7529c25-7abb-4e6b-954a-432b7fd7e672" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_4a12199e-baac-47e3-ae11-8b96f7161c06" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_d7529c25-7abb-4e6b-954a-432b7fd7e672" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_04af1f96-a80c-445f-81ce-20fbb5524a4c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_d7529c25-7abb-4e6b-954a-432b7fd7e672" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_04af1f96-a80c-445f-81ce-20fbb5524a4c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_04af1f96-a80c-445f-81ce-20fbb5524a4c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_04af1f96-a80c-445f-81ce-20fbb5524a4c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_04af1f96-a80c-445f-81ce-20fbb5524a4c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_44267730-e9dc-41c9-bfe4-56af094420d8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_04af1f96-a80c-445f-81ce-20fbb5524a4c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_44267730-e9dc-41c9-bfe4-56af094420d8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AirportTakeOffAndLandingSlotsMember_b9f1ede6-9041-4f7c-b47d-419fd0609a7b" xlink:href="aal-20211231.xsd#aal_AirportTakeOffAndLandingSlotsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_44267730-e9dc-41c9-bfe4-56af094420d8" xlink:to="loc_aal_AirportTakeOffAndLandingSlotsMember_b9f1ede6-9041-4f7c-b47d-419fd0609a7b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_42605929-d7e3-48c1-8881-fd5c472f64e7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CustomerRelationshipsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_44267730-e9dc-41c9-bfe4-56af094420d8" xlink:to="loc_us-gaap_CustomerRelationshipsMember_42605929-d7e3-48c1-8881-fd5c472f64e7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MarketingRelatedIntangibleAssetsMember_f2a7997a-b32a-45be-be14-5171bc887078" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MarketingRelatedIntangibleAssetsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_44267730-e9dc-41c9-bfe4-56af094420d8" xlink:to="loc_us-gaap_MarketingRelatedIntangibleAssetsMember_f2a7997a-b32a-45be-be14-5171bc887078" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_30d5489a-f571-4d65-be19-418dbad23786" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TradeNamesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_44267730-e9dc-41c9-bfe4-56af094420d8" xlink:to="loc_us-gaap_TradeNamesMember_30d5489a-f571-4d65-be19-418dbad23786" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AirportGateLeaseholdRightsMember_839f6712-d5cc-4900-9216-d878254dc458" xlink:href="aal-20211231.xsd#aal_AirportGateLeaseholdRightsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_44267730-e9dc-41c9-bfe4-56af094420d8" xlink:to="loc_aal_AirportGateLeaseholdRightsMember_839f6712-d5cc-4900-9216-d878254dc458" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_926480d8-6d83-4376-bf90-ef087f6cba25" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_d7529c25-7abb-4e6b-954a-432b7fd7e672" xlink:to="loc_dei_LegalEntityAxis_926480d8-6d83-4376-bf90-ef087f6cba25" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_926480d8-6d83-4376-bf90-ef087f6cba25_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_926480d8-6d83-4376-bf90-ef087f6cba25" xlink:to="loc_dei_EntityDomain_926480d8-6d83-4376-bf90-ef087f6cba25_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0fc9b4a3-8e7a-4060-a2b6-5902be660b4b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_926480d8-6d83-4376-bf90-ef087f6cba25" xlink:to="loc_dei_EntityDomain_0fc9b4a3-8e7a-4060-a2b6-5902be660b4b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_c0951414-68eb-4525-a406-1ac08c860b52" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0fc9b4a3-8e7a-4060-a2b6-5902be660b4b" xlink:to="loc_aal_AmericanAirlinesIncMember_c0951414-68eb-4525-a406-1ac08c860b52" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesDefiniteLivedIntangibleAssetsAmortizationExpenseDetail" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesDefiniteLivedIntangibleAssetsAmortizationExpenseDetail"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesDefiniteLivedIntangibleAssetsAmortizationExpenseDetail" xlink:type="extended" id="i4c2af9c3bfc7431896d59b70bda1728b_BasisofPresentationandSummaryofSignificantAccountingPoliciesDefiniteLivedIntangibleAssetsAmortizationExpenseDetail">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_641b258d-f219-4ffd-aa1b-4d7558b8210c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_e4d52897-dcc2-49d0-881d-d187a5677534" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_641b258d-f219-4ffd-aa1b-4d7558b8210c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_e4d52897-dcc2-49d0-881d-d187a5677534" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6df7ecbd-94fa-4a19-85bd-fb6390614631" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_641b258d-f219-4ffd-aa1b-4d7558b8210c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_6df7ecbd-94fa-4a19-85bd-fb6390614631" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_dfcb6f1f-42ad-4bc3-91b6-f50c319521a9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_641b258d-f219-4ffd-aa1b-4d7558b8210c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_dfcb6f1f-42ad-4bc3-91b6-f50c319521a9" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3812ddab-8da2-4ca6-883d-778cfeadee75" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_641b258d-f219-4ffd-aa1b-4d7558b8210c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3812ddab-8da2-4ca6-883d-778cfeadee75" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_9d781d3d-48a1-4c64-8e6c-1eab9d4a61c4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_641b258d-f219-4ffd-aa1b-4d7558b8210c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_9d781d3d-48a1-4c64-8e6c-1eab9d4a61c4" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_2f8f5f34-64d9-45eb-9896-7e83a7fd549b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_641b258d-f219-4ffd-aa1b-4d7558b8210c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_2f8f5f34-64d9-45eb-9896-7e83a7fd549b" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_9b2d6465-eaf9-4834-86b4-77b1e5adf170" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_641b258d-f219-4ffd-aa1b-4d7558b8210c" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_9b2d6465-eaf9-4834-86b4-77b1e5adf170" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_4f838b2d-25b2-43a5-a6fd-4502c527da67" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_641b258d-f219-4ffd-aa1b-4d7558b8210c" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_4f838b2d-25b2-43a5-a6fd-4502c527da67" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a81c2d31-2bd0-4c29-9bac-2679adecba1b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_4f838b2d-25b2-43a5-a6fd-4502c527da67" xlink:to="loc_dei_LegalEntityAxis_a81c2d31-2bd0-4c29-9bac-2679adecba1b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a81c2d31-2bd0-4c29-9bac-2679adecba1b_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a81c2d31-2bd0-4c29-9bac-2679adecba1b" xlink:to="loc_dei_EntityDomain_a81c2d31-2bd0-4c29-9bac-2679adecba1b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fb7f247c-b091-4575-9636-363576cb9d8e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a81c2d31-2bd0-4c29-9bac-2679adecba1b" xlink:to="loc_dei_EntityDomain_fb7f247c-b091-4575-9636-363576cb9d8e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_85d7b2c3-64c5-4cec-b976-0dac2d672d75" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fb7f247c-b091-4575-9636-363576cb9d8e" xlink:to="loc_aal_AmericanAirlinesIncMember_85d7b2c3-64c5-4cec-b976-0dac2d672d75" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesSignificantCategoriesofReportedOperatingRevenuesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesSignificantCategoriesofReportedOperatingRevenuesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesSignificantCategoriesofReportedOperatingRevenuesDetails" xlink:type="extended" id="i5bb26493efe443419a2fb9e36c4bbe38_BasisofPresentationandSummaryofSignificantAccountingPoliciesSignificantCategoriesofReportedOperatingRevenuesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_cc5a4c4f-5bab-434e-a4c5-0460f473210d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_8f3643c9-754b-4079-a7d3-3498239520f8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_cc5a4c4f-5bab-434e-a4c5-0460f473210d" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_8f3643c9-754b-4079-a7d3-3498239520f8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_f0aba945-3c78-4dde-b255-b49ca6487eec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems_cc5a4c4f-5bab-434e-a4c5-0460f473210d" xlink:to="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_f0aba945-3c78-4dde-b255-b49ca6487eec" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7474f8a5-a27d-49ac-b1b8-ba43e1f3838a" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_f0aba945-3c78-4dde-b255-b49ca6487eec" xlink:to="loc_dei_LegalEntityAxis_7474f8a5-a27d-49ac-b1b8-ba43e1f3838a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7474f8a5-a27d-49ac-b1b8-ba43e1f3838a_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7474f8a5-a27d-49ac-b1b8-ba43e1f3838a" xlink:to="loc_dei_EntityDomain_7474f8a5-a27d-49ac-b1b8-ba43e1f3838a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_592c40e5-85ec-4788-a961-1470d48b1e32" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7474f8a5-a27d-49ac-b1b8-ba43e1f3838a" xlink:to="loc_dei_EntityDomain_592c40e5-85ec-4788-a961-1470d48b1e32" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_16ae32a8-9a01-4d28-8654-6a9fb2b79bfc" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_592c40e5-85ec-4788-a961-1470d48b1e32" xlink:to="loc_aal_AmericanAirlinesIncMember_16ae32a8-9a01-4d28-8654-6a9fb2b79bfc" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_1fe52bc9-70b6-41d4-a418-798c44f22fb1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideInformationRevenueFromExternalCustomersByProductsAndServicesTable_f0aba945-3c78-4dde-b255-b49ca6487eec" xlink:to="loc_srt_ProductOrServiceAxis_1fe52bc9-70b6-41d4-a418-798c44f22fb1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_1fe52bc9-70b6-41d4-a418-798c44f22fb1_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_1fe52bc9-70b6-41d4-a418-798c44f22fb1" xlink:to="loc_srt_ProductsAndServicesDomain_1fe52bc9-70b6-41d4-a418-798c44f22fb1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_96cc0191-d746-4077-8204-24b82e07f0e1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_1fe52bc9-70b6-41d4-a418-798c44f22fb1" xlink:to="loc_srt_ProductsAndServicesDomain_96cc0191-d746-4077-8204-24b82e07f0e1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PassengerMember_13c1e220-e2b7-482c-be38-beaa1f3dbb2a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PassengerMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_96cc0191-d746-4077-8204-24b82e07f0e1" xlink:to="loc_us-gaap_PassengerMember_13c1e220-e2b7-482c-be38-beaa1f3dbb2a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PassengerTravelMember_24f8d7ae-b7a1-4e1c-9333-7f8cc30b74e7" xlink:href="aal-20211231.xsd#aal_PassengerTravelMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PassengerMember_13c1e220-e2b7-482c-be38-beaa1f3dbb2a" xlink:to="loc_aal_PassengerTravelMember_24f8d7ae-b7a1-4e1c-9333-7f8cc30b74e7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramTravelRedemptionsMember_c4f975bc-fa52-48c3-98bf-b1a7edc3b849" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramTravelRedemptionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PassengerMember_13c1e220-e2b7-482c-be38-beaa1f3dbb2a" xlink:to="loc_aal_LoyaltyProgramTravelRedemptionsMember_c4f975bc-fa52-48c3-98bf-b1a7edc3b849" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CargoAndFreightMember_0b1e2e49-af75-48f8-a167-13367b02811e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CargoAndFreightMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_96cc0191-d746-4077-8204-24b82e07f0e1" xlink:to="loc_us-gaap_CargoAndFreightMember_0b1e2e49-af75-48f8-a167-13367b02811e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_ff4e986c-146a-404f-9c8d-41abbdbddd44" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProductAndServiceOtherMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_96cc0191-d746-4077-8204-24b82e07f0e1" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_ff4e986c-146a-404f-9c8d-41abbdbddd44" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramMarketingServicesMember_dd15bc04-0cb2-4a1e-b70b-5dcd38dadc48" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramMarketingServicesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductAndServiceOtherMember_ff4e986c-146a-404f-9c8d-41abbdbddd44" xlink:to="loc_aal_LoyaltyProgramMarketingServicesMember_dd15bc04-0cb2-4a1e-b70b-5dcd38dadc48" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramCoBrandedCreditCardAndOtherPartnersMember_76ba1df7-6559-43bd-a948-72ebdc9e6e36" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramCoBrandedCreditCardAndOtherPartnersMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_LoyaltyProgramMarketingServicesMember_dd15bc04-0cb2-4a1e-b70b-5dcd38dadc48" xlink:to="loc_aal_LoyaltyProgramCoBrandedCreditCardAndOtherPartnersMember_76ba1df7-6559-43bd-a948-72ebdc9e6e36" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherRevenueMember_f74d1dbf-77b1-4ce4-9987-ad5ce9cfb483" xlink:href="aal-20211231.xsd#aal_OtherRevenueMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductAndServiceOtherMember_ff4e986c-146a-404f-9c8d-41abbdbddd44" xlink:to="loc_aal_OtherRevenueMember_f74d1dbf-77b1-4ce4-9987-ad5ce9cfb483" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesPassengerRevenuebyGeographicRegionDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesPassengerRevenuebyGeographicRegionDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesPassengerRevenuebyGeographicRegionDetails" xlink:type="extended" id="i2bce3f63587a4f0ea61f259d5728c804_BasisofPresentationandSummaryofSignificantAccountingPoliciesPassengerRevenuebyGeographicRegionDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineDestinationDisclosureLineItems_aa15fb76-66cb-445b-b9bb-628bd67eb09d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineDestinationDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ff35fbed-987a-430a-bc30-ca1b671132d7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AirlineDestinationDisclosureLineItems_aa15fb76-66cb-445b-b9bb-628bd67eb09d" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ff35fbed-987a-430a-bc30-ca1b671132d7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineDestinationTable_76acbe3f-b420-47ee-856f-2c00e775d7ae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineDestinationTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AirlineDestinationDisclosureLineItems_aa15fb76-66cb-445b-b9bb-628bd67eb09d" xlink:to="loc_us-gaap_AirlineDestinationTable_76acbe3f-b420-47ee-856f-2c00e775d7ae" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_3b6cf90f-a8a9-4628-8039-73232495b32b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AirlineDestinationTable_76acbe3f-b420-47ee-856f-2c00e775d7ae" xlink:to="loc_dei_LegalEntityAxis_3b6cf90f-a8a9-4628-8039-73232495b32b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3b6cf90f-a8a9-4628-8039-73232495b32b_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3b6cf90f-a8a9-4628-8039-73232495b32b" xlink:to="loc_dei_EntityDomain_3b6cf90f-a8a9-4628-8039-73232495b32b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_783e7733-384f-4825-bb72-ff641d547a7e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3b6cf90f-a8a9-4628-8039-73232495b32b" xlink:to="loc_dei_EntityDomain_783e7733-384f-4825-bb72-ff641d547a7e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_cade137e-2987-4024-9adf-ee57cd7cac92" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_783e7733-384f-4825-bb72-ff641d547a7e" xlink:to="loc_aal_AmericanAirlinesIncMember_cade137e-2987-4024-9adf-ee57cd7cac92" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_07d334ad-1f94-4181-862d-2774c9b567bb" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AirlineDestinationTable_76acbe3f-b420-47ee-856f-2c00e775d7ae" xlink:to="loc_srt_ProductOrServiceAxis_07d334ad-1f94-4181-862d-2774c9b567bb" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_07d334ad-1f94-4181-862d-2774c9b567bb_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_07d334ad-1f94-4181-862d-2774c9b567bb" xlink:to="loc_srt_ProductsAndServicesDomain_07d334ad-1f94-4181-862d-2774c9b567bb_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_c824c83f-ceae-4b30-b61e-ae249580e0bb" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_07d334ad-1f94-4181-862d-2774c9b567bb" xlink:to="loc_srt_ProductsAndServicesDomain_c824c83f-ceae-4b30-b61e-ae249580e0bb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PassengerMember_a705276a-e96a-4c32-9d2c-297134b652ee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PassengerMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_c824c83f-ceae-4b30-b61e-ae249580e0bb" xlink:to="loc_us-gaap_PassengerMember_a705276a-e96a-4c32-9d2c-297134b652ee" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineDestinationsAxis_d6142302-c121-4f68-b2a0-8bfc662b859c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineDestinationsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AirlineDestinationTable_76acbe3f-b420-47ee-856f-2c00e775d7ae" xlink:to="loc_us-gaap_AirlineDestinationsAxis_d6142302-c121-4f68-b2a0-8bfc662b859c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineDestinationDomain_d6142302-c121-4f68-b2a0-8bfc662b859c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineDestinationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AirlineDestinationsAxis_d6142302-c121-4f68-b2a0-8bfc662b859c" xlink:to="loc_us-gaap_AirlineDestinationDomain_d6142302-c121-4f68-b2a0-8bfc662b859c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineDestinationDomain_ef46b6f6-e86e-4d8a-a6ef-983c8fcd5e12" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineDestinationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AirlineDestinationsAxis_d6142302-c121-4f68-b2a0-8bfc662b859c" xlink:to="loc_us-gaap_AirlineDestinationDomain_ef46b6f6-e86e-4d8a-a6ef-983c8fcd5e12" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticDestinationMember_3b2e2ec1-6be9-4552-8708-533796e7911e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DomesticDestinationMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AirlineDestinationDomain_ef46b6f6-e86e-4d8a-a6ef-983c8fcd5e12" xlink:to="loc_us-gaap_DomesticDestinationMember_3b2e2ec1-6be9-4552-8708-533796e7911e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LatinAmericaDestinationMember_2cf96e24-a620-455c-9976-4bcd6d80993f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LatinAmericaDestinationMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AirlineDestinationDomain_ef46b6f6-e86e-4d8a-a6ef-983c8fcd5e12" xlink:to="loc_us-gaap_LatinAmericaDestinationMember_2cf96e24-a620-455c-9976-4bcd6d80993f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AtlanticDestinationMember_e1567b63-5e8d-4e9d-b348-8a812520fd37" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AtlanticDestinationMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AirlineDestinationDomain_ef46b6f6-e86e-4d8a-a6ef-983c8fcd5e12" xlink:to="loc_us-gaap_AtlanticDestinationMember_e1567b63-5e8d-4e9d-b348-8a812520fd37" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PacificDestinationMember_a1e80cbc-b15b-4222-9803-40697d6b25bb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PacificDestinationMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AirlineDestinationDomain_ef46b6f6-e86e-4d8a-a6ef-983c8fcd5e12" xlink:to="loc_us-gaap_PacificDestinationMember_a1e80cbc-b15b-4222-9803-40697d6b25bb" xlink:type="arc" order="3"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesSignificantContractLiabilitiesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesSignificantContractLiabilitiesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesSignificantContractLiabilitiesDetails" xlink:type="extended" id="if31f669adaeb494baad7310324b8161f_BasisofPresentationandSummaryofSignificantAccountingPoliciesSignificantContractLiabilitiesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_57eae116-0773-450f-a30b-bf08a8c0d5ec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_dcda147e-c5b1-4654-b614-bfee5f276231" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_57eae116-0773-450f-a30b-bf08a8c0d5ec" xlink:to="loc_us-gaap_ContractWithCustomerLiability_dcda147e-c5b1-4654-b614-bfee5f276231" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_602ce964-9ea8-4049-8a12-a5e8dcf3ecec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisaggregationOfRevenueTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_57eae116-0773-450f-a30b-bf08a8c0d5ec" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_602ce964-9ea8-4049-8a12-a5e8dcf3ecec" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_d48f9270-980f-40cb-9f70-37207308e461" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_602ce964-9ea8-4049-8a12-a5e8dcf3ecec" xlink:to="loc_dei_LegalEntityAxis_d48f9270-980f-40cb-9f70-37207308e461" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d48f9270-980f-40cb-9f70-37207308e461_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_d48f9270-980f-40cb-9f70-37207308e461" xlink:to="loc_dei_EntityDomain_d48f9270-980f-40cb-9f70-37207308e461_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8246ba02-fe98-4050-ae04-bcd05bfef4a1" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_d48f9270-980f-40cb-9f70-37207308e461" xlink:to="loc_dei_EntityDomain_8246ba02-fe98-4050-ae04-bcd05bfef4a1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_1b307a58-abde-4a67-96f9-bd9ee2702e63" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8246ba02-fe98-4050-ae04-bcd05bfef4a1" xlink:to="loc_aal_AmericanAirlinesIncMember_1b307a58-abde-4a67-96f9-bd9ee2702e63" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_8062225b-c172-455e-bc94-40b7b1f4d27d" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_602ce964-9ea8-4049-8a12-a5e8dcf3ecec" xlink:to="loc_srt_ProductOrServiceAxis_8062225b-c172-455e-bc94-40b7b1f4d27d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_8062225b-c172-455e-bc94-40b7b1f4d27d_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_8062225b-c172-455e-bc94-40b7b1f4d27d" xlink:to="loc_srt_ProductsAndServicesDomain_8062225b-c172-455e-bc94-40b7b1f4d27d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e03bc296-1a65-4ed0-9d92-e2cd08423745" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_8062225b-c172-455e-bc94-40b7b1f4d27d" xlink:to="loc_srt_ProductsAndServicesDomain_e03bc296-1a65-4ed0-9d92-e2cd08423745" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramMember_ae2aace7-8e3c-4629-86ff-3f2fafa15ff4" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e03bc296-1a65-4ed0-9d92-e2cd08423745" xlink:to="loc_aal_LoyaltyProgramMember_ae2aace7-8e3c-4629-86ff-3f2fafa15ff4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AirTrafficMember_925c60cf-b6ee-46b2-8ab8-31ac790d9101" xlink:href="aal-20211231.xsd#aal_AirTrafficMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e03bc296-1a65-4ed0-9d92-e2cd08423745" xlink:to="loc_aal_AirTrafficMember_925c60cf-b6ee-46b2-8ab8-31ac790d9101" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesChangesinLoyaltyProgramLiabilityDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesChangesinLoyaltyProgramLiabilityDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesChangesinLoyaltyProgramLiabilityDetails" xlink:type="extended" id="i25985610e14243afa9ba1c291cd53b84_BasisofPresentationandSummaryofSignificantAccountingPoliciesChangesinLoyaltyProgramLiabilityDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_fcc302be-c90d-4c61-9f97-1813c0087cd0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_MovementInContractWithCustomerLiabilityRollForward_9b367c22-d7db-4c5e-bc05-120ab7209f99" xlink:href="aal-20211231.xsd#aal_MovementInContractWithCustomerLiabilityRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_fcc302be-c90d-4c61-9f97-1813c0087cd0" xlink:to="loc_aal_MovementInContractWithCustomerLiabilityRollForward_9b367c22-d7db-4c5e-bc05-120ab7209f99" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_1b7fb06c-4c28-46dc-9d06-bb32bbe0a567" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_MovementInContractWithCustomerLiabilityRollForward_9b367c22-d7db-4c5e-bc05-120ab7209f99" xlink:to="loc_us-gaap_ContractWithCustomerLiability_1b7fb06c-4c28-46dc-9d06-bb32bbe0a567" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ContractwithCustomerLiabilityIncreasefromDeferralOfRevenue_ad95f433-9c2a-4686-88b3-35b30c55d115" xlink:href="aal-20211231.xsd#aal_ContractwithCustomerLiabilityIncreasefromDeferralOfRevenue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_MovementInContractWithCustomerLiabilityRollForward_9b367c22-d7db-4c5e-bc05-120ab7209f99" xlink:to="loc_aal_ContractwithCustomerLiabilityIncreasefromDeferralOfRevenue_ad95f433-9c2a-4686-88b3-35b30c55d115" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_c3d6c049-dde1-4dcf-af49-5f61504e351b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_MovementInContractWithCustomerLiabilityRollForward_9b367c22-d7db-4c5e-bc05-120ab7209f99" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_c3d6c049-dde1-4dcf-af49-5f61504e351b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_3b68efdd-6d43-48a4-a397-5d08eb4b2b6a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiability"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InactivePeriodBeforeExpirationOfMileageCredits_a338fac7-9e83-403c-bad7-2e9fa6af3ecb" xlink:href="aal-20211231.xsd#aal_InactivePeriodBeforeExpirationOfMileageCredits"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_fcc302be-c90d-4c61-9f97-1813c0087cd0" xlink:to="loc_aal_InactivePeriodBeforeExpirationOfMileageCredits_a338fac7-9e83-403c-bad7-2e9fa6af3ecb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_9f501ffc-9c04-4edc-a8ec-67490982027c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_fcc302be-c90d-4c61-9f97-1813c0087cd0" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_9f501ffc-9c04-4edc-a8ec-67490982027c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_38a5791c-e193-46e9-ae47-630b9f4e9cfc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisaggregationOfRevenueTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_fcc302be-c90d-4c61-9f97-1813c0087cd0" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_38a5791c-e193-46e9-ae47-630b9f4e9cfc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_edbfba33-baf1-4d96-a339-98ae85f44d7d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_38a5791c-e193-46e9-ae47-630b9f4e9cfc" xlink:to="loc_dei_LegalEntityAxis_edbfba33-baf1-4d96-a339-98ae85f44d7d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_edbfba33-baf1-4d96-a339-98ae85f44d7d_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_edbfba33-baf1-4d96-a339-98ae85f44d7d" xlink:to="loc_dei_EntityDomain_edbfba33-baf1-4d96-a339-98ae85f44d7d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_098c77b4-f199-4081-91e9-9a9e62ac3e60" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_edbfba33-baf1-4d96-a339-98ae85f44d7d" xlink:to="loc_dei_EntityDomain_098c77b4-f199-4081-91e9-9a9e62ac3e60" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_51952413-7eba-4080-adb4-def3487b7059" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_098c77b4-f199-4081-91e9-9a9e62ac3e60" xlink:to="loc_aal_AmericanAirlinesIncMember_51952413-7eba-4080-adb4-def3487b7059" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_99241d6e-d091-4498-9fa1-7b6fb63665ac" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_38a5791c-e193-46e9-ae47-630b9f4e9cfc" xlink:to="loc_srt_ProductOrServiceAxis_99241d6e-d091-4498-9fa1-7b6fb63665ac" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_99241d6e-d091-4498-9fa1-7b6fb63665ac_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_99241d6e-d091-4498-9fa1-7b6fb63665ac" xlink:to="loc_srt_ProductsAndServicesDomain_99241d6e-d091-4498-9fa1-7b6fb63665ac_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_7e7836fc-6613-4238-9a85-4fdb2df0e395" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_99241d6e-d091-4498-9fa1-7b6fb63665ac" xlink:to="loc_srt_ProductsAndServicesDomain_7e7836fc-6613-4238-9a85-4fdb2df0e395" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LoyaltyProgramMember_a2e8c810-6491-4af0-9982-cdb06ace76f4" xlink:href="aal-20211231.xsd#aal_LoyaltyProgramMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_7e7836fc-6613-4238-9a85-4fdb2df0e395" xlink:to="loc_aal_LoyaltyProgramMember_a2e8c810-6491-4af0-9982-cdb06ace76f4" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesRegionalExpensesDetail" xlink:type="simple" xlink:href="aal-20211231.xsd#BasisofPresentationandSummaryofSignificantAccountingPoliciesRegionalExpensesDetail"/>
<link:definitionLink xlink:role="http://www.aa.com/role/BasisofPresentationandSummaryofSignificantAccountingPoliciesRegionalExpensesDetail" xlink:type="extended" id="i031cb8c746cd49b7a7ca27e001073d02_BasisofPresentationandSummaryofSignificantAccountingPoliciesRegionalExpensesDetail">
<link:loc xlink:type="locator" xlink:label="loc_aal_RegionalExpensesLineItems_3d11c2a1-3900-4b64-9511-0a9071b45521" xlink:href="aal-20211231.xsd#aal_RegionalExpensesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_1d7b2182-ed87-4671-b592-362e535f3a29" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_RegionalExpensesLineItems_3d11c2a1-3900-4b64-9511-0a9071b45521" xlink:to="loc_us-gaap_DepreciationAndAmortization_1d7b2182-ed87-4671-b592-362e535f3a29" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AircraftRental_ab449ab4-30d2-4efb-a428-4f6bdb3f7fef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AircraftRental"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_RegionalExpensesLineItems_3d11c2a1-3900-4b64-9511-0a9071b45521" xlink:to="loc_us-gaap_AircraftRental_ab449ab4-30d2-4efb-a428-4f6bdb3f7fef" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CapacityPurchases_919eef69-0133-4dc5-8f43-5439192a297d" xlink:href="aal-20211231.xsd#aal_CapacityPurchases"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_RegionalExpensesLineItems_3d11c2a1-3900-4b64-9511-0a9071b45521" xlink:to="loc_aal_CapacityPurchases_919eef69-0133-4dc5-8f43-5439192a297d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_dc577c04-af58-42fc-9ba5-a3f36b766f0f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_RegionalExpensesLineItems_3d11c2a1-3900-4b64-9511-0a9071b45521" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_dc577c04-af58-42fc-9ba5-a3f36b766f0f" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RegionalExpensesTable_da54bec2-9578-4310-a6c9-686a95480c59" xlink:href="aal-20211231.xsd#aal_RegionalExpensesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_RegionalExpensesLineItems_3d11c2a1-3900-4b64-9511-0a9071b45521" xlink:to="loc_aal_RegionalExpensesTable_da54bec2-9578-4310-a6c9-686a95480c59" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_070cf2cd-14bc-461e-bb77-2ed3f50aeaf7" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_RegionalExpensesTable_da54bec2-9578-4310-a6c9-686a95480c59" xlink:to="loc_dei_LegalEntityAxis_070cf2cd-14bc-461e-bb77-2ed3f50aeaf7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_070cf2cd-14bc-461e-bb77-2ed3f50aeaf7_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_070cf2cd-14bc-461e-bb77-2ed3f50aeaf7" xlink:to="loc_dei_EntityDomain_070cf2cd-14bc-461e-bb77-2ed3f50aeaf7_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_50db887b-6d37-4d4a-b5e4-ede39d17609c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_070cf2cd-14bc-461e-bb77-2ed3f50aeaf7" xlink:to="loc_dei_EntityDomain_50db887b-6d37-4d4a-b5e4-ede39d17609c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_a54605b3-cc6a-4e07-b840-ca1068d50425" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_50db887b-6d37-4d4a-b5e4-ede39d17609c" xlink:to="loc_aal_AmericanAirlinesIncMember_a54605b3-cc6a-4e07-b840-ca1068d50425" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_5eb79383-eeb0-4577-b6f9-74ea08f947e1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_RegionalExpensesTable_da54bec2-9578-4310-a6c9-686a95480c59" xlink:to="loc_srt_ProductOrServiceAxis_5eb79383-eeb0-4577-b6f9-74ea08f947e1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_5eb79383-eeb0-4577-b6f9-74ea08f947e1_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_5eb79383-eeb0-4577-b6f9-74ea08f947e1" xlink:to="loc_srt_ProductsAndServicesDomain_5eb79383-eeb0-4577-b6f9-74ea08f947e1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_816d688e-a6fa-4417-be17-993fbd6d545d" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_5eb79383-eeb0-4577-b6f9-74ea08f947e1" xlink:to="loc_srt_ProductsAndServicesDomain_816d688e-a6fa-4417-be17-993fbd6d545d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegionalCarrierMember_94156b3f-565a-4a26-8584-423488ecf062" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RegionalCarrierMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_816d688e-a6fa-4417-be17-993fbd6d545d" xlink:to="loc_us-gaap_RegionalCarrierMember_94156b3f-565a-4a26-8584-423488ecf062" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_509840dd-fdff-4a86-8c7a-61158730121e" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CounterpartyNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_RegionalExpensesTable_da54bec2-9578-4310-a6c9-686a95480c59" xlink:to="loc_srt_CounterpartyNameAxis_509840dd-fdff-4a86-8c7a-61158730121e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_509840dd-fdff-4a86-8c7a-61158730121e_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_509840dd-fdff-4a86-8c7a-61158730121e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_509840dd-fdff-4a86-8c7a-61158730121e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_3949130f-66b4-4368-86a3-7423730e3f66" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_509840dd-fdff-4a86-8c7a-61158730121e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_3949130f-66b4-4368-86a3-7423730e3f66" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RepublicAirlineIncMember_5224a687-08cb-4739-b4e8-32b96c3f03e0" xlink:href="aal-20211231.xsd#aal_RepublicAirlineIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_3949130f-66b4-4368-86a3-7423730e3f66" xlink:to="loc_aal_RepublicAirlineIncMember_5224a687-08cb-4739-b4e8-32b96c3f03e0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_7c28c4db-4475-4b6a-adf9-52f798a8618c" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_RegionalExpensesTable_da54bec2-9578-4310-a6c9-686a95480c59" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_7c28c4db-4475-4b6a-adf9-52f798a8618c" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_7c28c4db-4475-4b6a-adf9-52f798a8618c_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_7c28c4db-4475-4b6a-adf9-52f798a8618c" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_7c28c4db-4475-4b6a-adf9-52f798a8618c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_f710f57f-f0a1-4c59-8661-e71cba15f123" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_7c28c4db-4475-4b6a-adf9-52f798a8618c" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_f710f57f-f0a1-4c59-8661-e71cba15f123" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RepublicAirwaysHoldingsInc.Member_5534fee8-25cd-4e3c-963a-5beb3d390cbb" xlink:href="aal-20211231.xsd#aal_RepublicAirwaysHoldingsInc.Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_f710f57f-f0a1-4c59-8661-e71cba15f123" xlink:to="loc_aal_RepublicAirwaysHoldingsInc.Member_5534fee8-25cd-4e3c-963a-5beb3d390cbb" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SpecialItemsNet" xlink:type="simple" xlink:href="aal-20211231.xsd#SpecialItemsNet"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SpecialItemsNet" xlink:type="extended" id="i6824c5e9d3ac4c30b2a68a15576f7c6d_SpecialItemsNet">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_7e7ce280-9260-4829-9185-f1fad04fb3d9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_96143eab-1d81-445e-9442-e2e2ae882ba6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_7e7ce280-9260-4829-9185-f1fad04fb3d9" xlink:to="loc_us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock_96143eab-1d81-445e-9442-e2e2ae882ba6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_9c23e7b6-1438-43a5-81d5-4d786c00f275" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_7e7ce280-9260-4829-9185-f1fad04fb3d9" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_9c23e7b6-1438-43a5-81d5-4d786c00f275" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a002dad6-0597-4552-bbb3-da89fcb22e55" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_9c23e7b6-1438-43a5-81d5-4d786c00f275" xlink:to="loc_dei_LegalEntityAxis_a002dad6-0597-4552-bbb3-da89fcb22e55" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a002dad6-0597-4552-bbb3-da89fcb22e55_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a002dad6-0597-4552-bbb3-da89fcb22e55" xlink:to="loc_dei_EntityDomain_a002dad6-0597-4552-bbb3-da89fcb22e55_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_179a7b06-0e00-413f-bed8-1d1779164ebf" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a002dad6-0597-4552-bbb3-da89fcb22e55" xlink:to="loc_dei_EntityDomain_179a7b06-0e00-413f-bed8-1d1779164ebf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_cf8eb95b-36ec-485a-b458-ed3c91d20712" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_179a7b06-0e00-413f-bed8-1d1779164ebf" xlink:to="loc_aal_AmericanAirlinesIncMember_cf8eb95b-36ec-485a-b458-ed3c91d20712" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SpecialItemsNetTables" xlink:type="simple" xlink:href="aal-20211231.xsd#SpecialItemsNetTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SpecialItemsNetTables" xlink:type="extended" id="if540911c1b7a417995fb890f33acf817_SpecialItemsNetTables">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_1c22f469-efb1-4e87-8fee-188423ecbdae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_3afdee94-a4ae-4b9a-9c43-141a1b1d4561" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_1c22f469-efb1-4e87-8fee-188423ecbdae" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock_3afdee94-a4ae-4b9a-9c43-141a1b1d4561" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_d4f317a0-e001-41aa-a508-3361394eaa62" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_1c22f469-efb1-4e87-8fee-188423ecbdae" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_d4f317a0-e001-41aa-a508-3361394eaa62" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7b112214-9b01-449f-86f5-f68c2d2534b3" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_d4f317a0-e001-41aa-a508-3361394eaa62" xlink:to="loc_dei_LegalEntityAxis_7b112214-9b01-449f-86f5-f68c2d2534b3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7b112214-9b01-449f-86f5-f68c2d2534b3_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7b112214-9b01-449f-86f5-f68c2d2534b3" xlink:to="loc_dei_EntityDomain_7b112214-9b01-449f-86f5-f68c2d2534b3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5be1a314-ecb6-43a8-b856-0ffc7365cd83" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7b112214-9b01-449f-86f5-f68c2d2534b3" xlink:to="loc_dei_EntityDomain_5be1a314-ecb6-43a8-b856-0ffc7365cd83" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_f499a625-f3d8-47e0-867f-d78472372f30" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5be1a314-ecb6-43a8-b856-0ffc7365cd83" xlink:to="loc_aal_AmericanAirlinesIncMember_f499a625-f3d8-47e0-867f-d78472372f30" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SpecialItemsNetDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#SpecialItemsNetDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SpecialItemsNetDetails" xlink:type="extended" id="iefc7181b183143e7a7b87024377e90d0_SpecialItemsNetDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramGrant_52def0e8-3e8b-41ac-a75c-b9689dd4b502" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramGrant"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_PayrollSupportProgramGrant_52def0e8-3e8b-41ac-a75c-b9689dd4b502" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeveranceCosts1_2a2c766a-2d59-441f-b2e7-99dfd178e146" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeveranceCosts1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_us-gaap_SeveranceCosts1_2a2c766a-2d59-441f-b2e7-99dfd178e146" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossRelatedToLitigationSettlement_bdb4d29c-1ca2-4c54-a1f5-1b7d3dc654c1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainLossRelatedToLitigationSettlement"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_us-gaap_GainLossRelatedToLitigationSettlement_bdb4d29c-1ca2-4c54-a1f5-1b7d3dc654c1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_MarktoMarketAdjustmentsIncomeLossforBankruptcyObligationsandOther_4a12225f-ae36-4588-85be-3c52880394ae" xlink:href="aal-20211231.xsd#aal_MarktoMarketAdjustmentsIncomeLossforBankruptcyObligationsandOther"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_MarktoMarketAdjustmentsIncomeLossforBankruptcyObligationsandOther_4a12225f-ae36-4588-85be-3c52880394ae" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_FlightEquipmentOperatingLeaseAndInventoryImpairmentLoss_18b6d421-7488-4039-b48b-e128bfbaab3b" xlink:href="aal-20211231.xsd#aal_FlightEquipmentOperatingLeaseAndInventoryImpairmentLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_FlightEquipmentOperatingLeaseAndInventoryImpairmentLoss_18b6d421-7488-4039-b48b-e128bfbaab3b" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLaborRelatedExpenses_8c2579aa-139e-4123-aa44-e25df0597d14" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherLaborRelatedExpenses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_us-gaap_OtherLaborRelatedExpenses_8c2579aa-139e-4123-aa44-e25df0597d14" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringCosts_0dbf64b5-3804-4a4e-b8c2-c48aba733014" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherRestructuringCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_us-gaap_OtherRestructuringCosts_0dbf64b5-3804-4a4e-b8c2-c48aba733014" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationIntegrationRelatedCosts_c722a412-0f20-4bbf-aa41-5e9cc4e67890" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationIntegrationRelatedCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_us-gaap_BusinessCombinationIntegrationRelatedCosts_c722a412-0f20-4bbf-aa41-5e9cc4e67890" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherOperatingSpecialChargesNet_7eea3408-8846-4111-9d07-7d1379cd3209" xlink:href="aal-20211231.xsd#aal_OtherOperatingSpecialChargesNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_OtherOperatingSpecialChargesNet_7eea3408-8846-4111-9d07-7d1379cd3209" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RestructuringAndOtherNet_e3a9faad-1bd3-4c07-b5b6-d8769a084e4a" xlink:href="aal-20211231.xsd#aal_RestructuringAndOtherNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_RestructuringAndOtherNet_e3a9faad-1bd3-4c07-b5b6-d8769a084e4a" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PilotRetentionCost_6eab408a-734c-42f4-aee2-e29c6e2b922f" xlink:href="aal-20211231.xsd#aal_PilotRetentionCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_PilotRetentionCost_6eab408a-734c-42f4-aee2-e29c6e2b922f" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_77edb54b-5cc2-48fd-ad15-df6dd57475ff" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_us-gaap_EquitySecuritiesFvNiUnrealizedGainLoss_77edb54b-5cc2-48fd-ad15-df6dd57475ff" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtRefinancingDebtExtinguishmentAndOtherExpense_26afcf1b-b2b3-4d05-9caa-eec9ac559d2d" xlink:href="aal-20211231.xsd#aal_DebtRefinancingDebtExtinguishmentAndOtherExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_DebtRefinancingDebtExtinguishmentAndOtherExpense_26afcf1b-b2b3-4d05-9caa-eec9ac559d2d" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NonoperatingSpecialItemsNet_8d7f2249-e8d7-4f91-b5d7-105464d77d1c" xlink:href="aal-20211231.xsd#aal_NonoperatingSpecialItemsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_NonoperatingSpecialItemsNet_8d7f2249-e8d7-4f91-b5d7-105464d77d1c" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_FleetEquipmentImpairmentAndInventoryWriteDown_8d34da3a-832b-49f1-a42e-b1012463eb4d" xlink:href="aal-20211231.xsd#aal_FleetEquipmentImpairmentAndInventoryWriteDown"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_FleetEquipmentImpairmentAndInventoryWriteDown_8d34da3a-832b-49f1-a42e-b1012463eb4d" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseImpairmentLoss_5e581a28-03c3-406a-9b70-fd58bdf00213" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseImpairmentLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_us-gaap_OperatingLeaseImpairmentLoss_5e581a28-03c3-406a-9b70-fd58bdf00213" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PaymentsForRestructuringSalaryAndMedicalCosts_aaf766bd-201a-445b-8118-c3fbd18c8498" xlink:href="aal-20211231.xsd#aal_PaymentsForRestructuringSalaryAndMedicalCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_aal_PaymentsForRestructuringSalaryAndMedicalCosts_aaf766bd-201a-445b-8118-c3fbd18c8498" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_a0d6ae53-d526-4336-bf99-1904929e7969" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_43fe9a77-73ff-4af8-903e-110d529d455e" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_a0d6ae53-d526-4336-bf99-1904929e7969" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_d7459002-2840-481e-a3b5-b52a5ff8bdc2" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_a0d6ae53-d526-4336-bf99-1904929e7969" xlink:to="loc_srt_ProductOrServiceAxis_d7459002-2840-481e-a3b5-b52a5ff8bdc2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_d7459002-2840-481e-a3b5-b52a5ff8bdc2_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_d7459002-2840-481e-a3b5-b52a5ff8bdc2" xlink:to="loc_srt_ProductsAndServicesDomain_d7459002-2840-481e-a3b5-b52a5ff8bdc2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_bbddadc2-4ef3-4e4b-b5a5-a5bdb5490353" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_d7459002-2840-481e-a3b5-b52a5ff8bdc2" xlink:to="loc_srt_ProductsAndServicesDomain_bbddadc2-4ef3-4e4b-b5a5-a5bdb5490353" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MainlineMember_5abe05e7-aa89-41f2-990d-8229c9540c70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MainlineMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_bbddadc2-4ef3-4e4b-b5a5-a5bdb5490353" xlink:to="loc_us-gaap_MainlineMember_5abe05e7-aa89-41f2-990d-8229c9540c70" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegionalCarrierMember_ca0a9b50-c639-4ec2-83c9-12eb5316d63e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RegionalCarrierMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_bbddadc2-4ef3-4e4b-b5a5-a5bdb5490353" xlink:to="loc_us-gaap_RegionalCarrierMember_ca0a9b50-c639-4ec2-83c9-12eb5316d63e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_296f7a0e-a6cc-42b5-87c8-1a4ec751b8a6" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_a0d6ae53-d526-4336-bf99-1904929e7969" xlink:to="loc_dei_LegalEntityAxis_296f7a0e-a6cc-42b5-87c8-1a4ec751b8a6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_296f7a0e-a6cc-42b5-87c8-1a4ec751b8a6_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_296f7a0e-a6cc-42b5-87c8-1a4ec751b8a6" xlink:to="loc_dei_EntityDomain_296f7a0e-a6cc-42b5-87c8-1a4ec751b8a6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3b7a8b41-2062-4efa-9532-e5bf081b8c68" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_296f7a0e-a6cc-42b5-87c8-1a4ec751b8a6" xlink:to="loc_dei_EntityDomain_3b7a8b41-2062-4efa-9532-e5bf081b8c68" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_020a0493-9ca5-474d-9ba9-92ff4f1cbe29" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3b7a8b41-2062-4efa-9532-e5bf081b8c68" xlink:to="loc_aal_AmericanAirlinesIncMember_020a0493-9ca5-474d-9ba9-92ff4f1cbe29" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EarningsLossPerCommonShareDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EarningsLossPerCommonShareDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EarningsLossPerCommonShareDetails" xlink:type="extended" id="i489e20f848a2473597c2f89e404c795d_EarningsLossPerCommonShareDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_eeee8cf4-8e05-4593-892a-021356a29acb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_5d372a62-6404-428c-932c-d747779068c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_eeee8cf4-8e05-4593-892a-021356a29acb" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_5d372a62-6404-428c-932c-d747779068c3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_8e73c93c-0ae3-4925-8865-1c5cabf8650b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_eeee8cf4-8e05-4593-892a-021356a29acb" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_8e73c93c-0ae3-4925-8865-1c5cabf8650b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_81b413e2-8541-4453-a98a-7ba2c37acd4b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_8e73c93c-0ae3-4925-8865-1c5cabf8650b" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_81b413e2-8541-4453-a98a-7ba2c37acd4b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_81b413e2-8541-4453-a98a-7ba2c37acd4b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_81b413e2-8541-4453-a98a-7ba2c37acd4b" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_81b413e2-8541-4453-a98a-7ba2c37acd4b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c67ae02a-37e0-496c-b5fb-813c01136bad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_81b413e2-8541-4453-a98a-7ba2c37acd4b" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c67ae02a-37e0-496c-b5fb-813c01136bad" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtSecuritiesMember_9ccbd5c7-e057-4b6b-90d7-dc7124abeadf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConvertibleDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c67ae02a-37e0-496c-b5fb-813c01136bad" xlink:to="loc_us-gaap_ConvertibleDebtSecuritiesMember_9ccbd5c7-e057-4b6b-90d7-dc7124abeadf" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_WarrantMember_fcf33bad-1dbb-4f42-a22b-4e29f2030c32" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WarrantMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c67ae02a-37e0-496c-b5fb-813c01136bad" xlink:to="loc_us-gaap_WarrantMember_fcf33bad-1dbb-4f42-a22b-4e29f2030c32" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_acf2f9a9-43f4-42cb-bdf3-ffd5bb25625a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c67ae02a-37e0-496c-b5fb-813c01136bad" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_acf2f9a9-43f4-42cb-bdf3-ffd5bb25625a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_TreasuryLoanWarrantsMember_d9f3cf20-f310-4463-8feb-45f07d2dff0c" xlink:href="aal-20211231.xsd#aal_TreasuryLoanWarrantsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_c67ae02a-37e0-496c-b5fb-813c01136bad" xlink:to="loc_aal_TreasuryLoanWarrantsMember_d9f3cf20-f310-4463-8feb-45f07d2dff0c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightAxis_b84711b0-925f-46db-9567-9c3ef2545281" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfWarrantOrRightAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_8e73c93c-0ae3-4925-8865-1c5cabf8650b" xlink:to="loc_us-gaap_ClassOfWarrantOrRightAxis_b84711b0-925f-46db-9567-9c3ef2545281" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_b84711b0-925f-46db-9567-9c3ef2545281_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_b84711b0-925f-46db-9567-9c3ef2545281" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_b84711b0-925f-46db-9567-9c3ef2545281_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightDomain_48e2f196-37da-4a61-84a0-0abaed352b98" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfWarrantOrRightDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ClassOfWarrantOrRightAxis_b84711b0-925f-46db-9567-9c3ef2545281" xlink:to="loc_us-gaap_ClassOfWarrantOrRightDomain_48e2f196-37da-4a61-84a0-0abaed352b98" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramOneWarrantsCARESActMember_6463acf4-61fc-49bb-b532-ee3904f6e60c" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramOneWarrantsCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_48e2f196-37da-4a61-84a0-0abaed352b98" xlink:to="loc_aal_PayrollSupportProgramOneWarrantsCARESActMember_6463acf4-61fc-49bb-b532-ee3904f6e60c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramTwoWarrantsCARESActMember_20774bf1-1e87-4297-b692-26127e283f0c" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramTwoWarrantsCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfWarrantOrRightDomain_48e2f196-37da-4a61-84a0-0abaed352b98" xlink:to="loc_aal_PayrollSupportProgramTwoWarrantsCARESActMember_20774bf1-1e87-4297-b692-26127e283f0c" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/Debt" xlink:type="simple" xlink:href="aal-20211231.xsd#Debt"/>
<link:definitionLink xlink:role="http://www.aa.com/role/Debt" xlink:type="extended" id="i861800afe4784c36aa68098b548456a1_Debt">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_90f6c8b8-0cdb-4449-becc-dc99cf73a4a0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_01236e26-d134-4a71-a259-c0be50f64422" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtDisclosureTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_90f6c8b8-0cdb-4449-becc-dc99cf73a4a0" xlink:to="loc_us-gaap_DebtDisclosureTextBlock_01236e26-d134-4a71-a259-c0be50f64422" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_9683d5f4-09ac-499e-ae6a-b10c17a09b3f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_90f6c8b8-0cdb-4449-becc-dc99cf73a4a0" xlink:to="loc_us-gaap_DebtInstrumentTable_9683d5f4-09ac-499e-ae6a-b10c17a09b3f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_830aa44c-d079-41ad-8417-f8b3e3b57053" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9683d5f4-09ac-499e-ae6a-b10c17a09b3f" xlink:to="loc_dei_LegalEntityAxis_830aa44c-d079-41ad-8417-f8b3e3b57053" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_830aa44c-d079-41ad-8417-f8b3e3b57053_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_830aa44c-d079-41ad-8417-f8b3e3b57053" xlink:to="loc_dei_EntityDomain_830aa44c-d079-41ad-8417-f8b3e3b57053_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9fd697c8-90ba-4feb-8164-dd23572d0dda" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_830aa44c-d079-41ad-8417-f8b3e3b57053" xlink:to="loc_dei_EntityDomain_9fd697c8-90ba-4feb-8164-dd23572d0dda" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_85951eed-142e-408a-9a63-08b7c698c440" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9fd697c8-90ba-4feb-8164-dd23572d0dda" xlink:to="loc_aal_AmericanAirlinesIncMember_85951eed-142e-408a-9a63-08b7c698c440" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtTables" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtTables" xlink:type="extended" id="i8bfc506c9b5d47ee999d1d3585cf0c1c_DebtTables">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_49cdd8a3-f655-41d4-b64d-858e13ac43f0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDebtTableTextBlock_84fe81c4-d16a-4dab-bcc6-4cc0ae8d0fde" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDebtTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_49cdd8a3-f655-41d4-b64d-858e13ac43f0" xlink:to="loc_us-gaap_ScheduleOfDebtTableTextBlock_84fe81c4-d16a-4dab-bcc6-4cc0ae8d0fde" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfLineOfCreditFacilitiesTextBlock_f56c45d7-41c0-4ccb-988b-51e619ca5990" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfLineOfCreditFacilitiesTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_49cdd8a3-f655-41d4-b64d-858e13ac43f0" xlink:to="loc_us-gaap_ScheduleOfLineOfCreditFacilitiesTextBlock_f56c45d7-41c0-4ccb-988b-51e619ca5990" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_6843a514-e1ab-45b0-8882-da6f89c611d6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_49cdd8a3-f655-41d4-b64d-858e13ac43f0" xlink:to="loc_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_6843a514-e1ab-45b0-8882-da6f89c611d6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtTableTextBlock_45ad1d7d-ee5b-4101-966c-01dd6d79eca6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConvertibleDebtTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_49cdd8a3-f655-41d4-b64d-858e13ac43f0" xlink:to="loc_us-gaap_ConvertibleDebtTableTextBlock_45ad1d7d-ee5b-4101-966c-01dd6d79eca6" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ScheduleOfCollateralCoverageTestsTableTextBlock_42b31836-6054-4808-8e8b-e0f63bdeeec7" xlink:href="aal-20211231.xsd#aal_ScheduleOfCollateralCoverageTestsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_49cdd8a3-f655-41d4-b64d-858e13ac43f0" xlink:to="loc_aal_ScheduleOfCollateralCoverageTestsTableTextBlock_42b31836-6054-4808-8e8b-e0f63bdeeec7" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_8a90bfa6-ae20-4c1f-84ef-4a686c02fd9d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_49cdd8a3-f655-41d4-b64d-858e13ac43f0" xlink:to="loc_us-gaap_DebtInstrumentTable_8a90bfa6-ae20-4c1f-84ef-4a686c02fd9d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7e988dec-f68c-4607-a322-c371fe7a9942" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_8a90bfa6-ae20-4c1f-84ef-4a686c02fd9d" xlink:to="loc_dei_LegalEntityAxis_7e988dec-f68c-4607-a322-c371fe7a9942" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7e988dec-f68c-4607-a322-c371fe7a9942_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7e988dec-f68c-4607-a322-c371fe7a9942" xlink:to="loc_dei_EntityDomain_7e988dec-f68c-4607-a322-c371fe7a9942_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fe9d4a9d-1108-46d4-bc2a-a14bb4231425" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7e988dec-f68c-4607-a322-c371fe7a9942" xlink:to="loc_dei_EntityDomain_fe9d4a9d-1108-46d4-bc2a-a14bb4231425" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_40600c61-f050-419f-b0f6-0904f09d2d33" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fe9d4a9d-1108-46d4-bc2a-a14bb4231425" xlink:to="loc_aal_AmericanAirlinesIncMember_40600c61-f050-419f-b0f6-0904f09d2d33" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtComponentsofLongTermDebtDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtComponentsofLongTermDebtDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtComponentsofLongTermDebtDetails" xlink:type="extended" id="i2cd6d730a24b4bc3a4ebbf31de9cbab5_DebtComponentsofLongTermDebtDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_11409fca-00cd-48cb-a829-e6de5fd68cb0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_aeb52a40-9626-48ce-8e66-380edec34214" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_11409fca-00cd-48cb-a829-e6de5fd68cb0" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_aeb52a40-9626-48ce-8e66-380edec34214" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_b05c17a4-fa58-4fc3-8c2e-c6e01f498175" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_11409fca-00cd-48cb-a829-e6de5fd68cb0" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_b05c17a4-fa58-4fc3-8c2e-c6e01f498175" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_d086cb8f-32e0-4ab2-8fdc-b71eb35fd77f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_11409fca-00cd-48cb-a829-e6de5fd68cb0" xlink:to="loc_us-gaap_LongTermDebtCurrent_d086cb8f-32e0-4ab2-8fdc-b71eb35fd77f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_5abdf746-9e27-425c-9e9f-ed0c73ee3e1b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_11409fca-00cd-48cb-a829-e6de5fd68cb0" xlink:to="loc_us-gaap_LongTermDebt_5abdf746-9e27-425c-9e9f-ed0c73ee3e1b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_81f11995-2eee-4c01-875e-a1c054b84b77" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtPercentageBearingVariableInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_11409fca-00cd-48cb-a829-e6de5fd68cb0" xlink:to="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_81f11995-2eee-4c01-875e-a1c054b84b77" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_6d933dcc-595a-4cae-8219-48eb25651136" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_11409fca-00cd-48cb-a829-e6de5fd68cb0" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_6d933dcc-595a-4cae-8219-48eb25651136" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_a13b80ca-d307-43e9-9486-8222ce0c8073" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtWeightedAverageInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_11409fca-00cd-48cb-a829-e6de5fd68cb0" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_a13b80ca-d307-43e9-9486-8222ce0c8073" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_18fcd326-a94b-4d35-8254-31b8d9eb9741" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_11409fca-00cd-48cb-a829-e6de5fd68cb0" xlink:to="loc_us-gaap_DebtInstrumentTable_18fcd326-a94b-4d35-8254-31b8d9eb9741" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_04bc5dbc-66ec-40ac-bc49-37e59ed3de15" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_18fcd326-a94b-4d35-8254-31b8d9eb9741" xlink:to="loc_dei_LegalEntityAxis_04bc5dbc-66ec-40ac-bc49-37e59ed3de15" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_04bc5dbc-66ec-40ac-bc49-37e59ed3de15_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_04bc5dbc-66ec-40ac-bc49-37e59ed3de15" xlink:to="loc_dei_EntityDomain_04bc5dbc-66ec-40ac-bc49-37e59ed3de15_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_71ba842b-32df-4576-bc48-314d7c25392c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_04bc5dbc-66ec-40ac-bc49-37e59ed3de15" xlink:to="loc_dei_EntityDomain_71ba842b-32df-4576-bc48-314d7c25392c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_79c81269-d93d-4850-b183-e04dfc17799b" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_71ba842b-32df-4576-bc48-314d7c25392c" xlink:to="loc_aal_AmericanAirlinesIncMember_79c81269-d93d-4850-b183-e04dfc17799b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_993d82bb-6dae-4c15-9558-73a944424132" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_18fcd326-a94b-4d35-8254-31b8d9eb9741" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_993d82bb-6dae-4c15-9558-73a944424132" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_993d82bb-6dae-4c15-9558-73a944424132_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_993d82bb-6dae-4c15-9558-73a944424132" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_993d82bb-6dae-4c15-9558-73a944424132_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_68420dac-a79e-42b7-9b85-58f2bf924061" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_993d82bb-6dae-4c15-9558-73a944424132" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_68420dac-a79e-42b7-9b85-58f2bf924061" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_487f840b-5541-41ed-a2f8-b880d9182b09" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_68420dac-a79e-42b7-9b85-58f2bf924061" xlink:to="loc_us-gaap_SecuredDebtMember_487f840b-5541-41ed-a2f8-b880d9182b09" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_6f3f1d9b-388a-4acc-ad57-e6421139812a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_68420dac-a79e-42b7-9b85-58f2bf924061" xlink:to="loc_us-gaap_UnsecuredDebtMember_6f3f1d9b-388a-4acc-ad57-e6421139812a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_388adc0a-bf96-4bf8-b1fc-b39e9cb6c186" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_18fcd326-a94b-4d35-8254-31b8d9eb9741" xlink:to="loc_us-gaap_DebtInstrumentAxis_388adc0a-bf96-4bf8-b1fc-b39e9cb6c186" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_388adc0a-bf96-4bf8-b1fc-b39e9cb6c186_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_388adc0a-bf96-4bf8-b1fc-b39e9cb6c186" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_388adc0a-bf96-4bf8-b1fc-b39e9cb6c186_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_388adc0a-bf96-4bf8-b1fc-b39e9cb6c186" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2013Member_287c84d3-b94c-42fe-9eba-a17a10a8e098" xlink:href="aal-20211231.xsd#aal_CreditFacility2013Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_CreditFacility2013Member_287c84d3-b94c-42fe-9eba-a17a10a8e098" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2014Member_d4e0fe6f-8569-4ca7-8db9-9ff99e00e191" xlink:href="aal-20211231.xsd#aal_CreditFacility2014Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_CreditFacility2014Member_d4e0fe6f-8569-4ca7-8db9-9ff99e00e191" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacilityApril2016Member_a142cf4a-06ae-4229-8cfd-c014467fcde8" xlink:href="aal-20211231.xsd#aal_CreditFacilityApril2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_CreditFacilityApril2016Member_a142cf4a-06ae-4229-8cfd-c014467fcde8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacilityDecember2016Member_771d6b30-6f29-4763-b908-2880a65d765c" xlink:href="aal-20211231.xsd#aal_CreditFacilityDecember2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_CreditFacilityDecember2016Member_771d6b30-6f29-4763-b908-2880a65d765c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes11.75Due2025Member_2e47a1bf-7c7c-46be-869a-c6db285752b1" xlink:href="aal-20211231.xsd#aal_SeniorNotes11.75Due2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_SeniorNotes11.75Due2025Member_2e47a1bf-7c7c-46be-869a-c6db285752b1" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A1075SeniorSecuredNotesIPNotesMember_eb7c41ad-ca31-4fa9-be05-e6a6e57d8fe4" xlink:href="aal-20211231.xsd#aal_A1075SeniorSecuredNotesIPNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_A1075SeniorSecuredNotesIPNotesMember_eb7c41ad-ca31-4fa9-be05-e6a6e57d8fe4" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A1075SeniorSecuredNotesLGADCANotesMember_25931160-3f5d-434a-b8ea-506a636eb693" xlink:href="aal-20211231.xsd#aal_A1075SeniorSecuredNotesLGADCANotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_A1075SeniorSecuredNotesLGADCANotesMember_25931160-3f5d-434a-b8ea-506a636eb693" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_TreasuryLoanAgreementCARESActMember_ceaddb40-9a15-4e89-9216-a823d7296769" xlink:href="aal-20211231.xsd#aal_TreasuryLoanAgreementCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_TreasuryLoanAgreementCARESActMember_ceaddb40-9a15-4e89-9216-a823d7296769" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote550Matures2026Member_b1d477ef-b188-49f7-9d27-5b33704c897b" xlink:href="aal-20211231.xsd#aal_SeniorNote550Matures2026Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_SeniorNote550Matures2026Member_b1d477ef-b188-49f7-9d27-5b33704c897b" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote575Matures2029Member_c092a895-56cb-43fe-9a0d-98889ef0c33b" xlink:href="aal-20211231.xsd#aal_SeniorNote575Matures2029Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_SeniorNote575Matures2029Member_c092a895-56cb-43fe-9a0d-98889ef0c33b" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AAdvantageTermLoanFacilityMember_710fd571-63f7-40aa-ae28-d188fc20aba9" xlink:href="aal-20211231.xsd#aal_AAdvantageTermLoanFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_AAdvantageTermLoanFacilityMember_710fd571-63f7-40aa-ae28-d188fc20aba9" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnhancedEquipmentTrustCertificateMember_a085cb0c-c006-4847-8b65-58eb73c4536c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EnhancedEquipmentTrustCertificateMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_us-gaap_EnhancedEquipmentTrustCertificateMember_a085cb0c-c006-4847-8b65-58eb73c4536c" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EquipmentLoansAndOtherNotesPayableMember_afc7fe2e-b3cd-493f-8027-d2f3fdf67126" xlink:href="aal-20211231.xsd#aal_EquipmentLoansAndOtherNotesPayableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_EquipmentLoansAndOtherNotesPayableMember_afc7fe2e-b3cd-493f-8027-d2f3fdf67126" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SpecialFacilityRevenueBondsMember_53f681f5-bd80-495d-961a-b5a7f42b3573" xlink:href="aal-20211231.xsd#aal_SpecialFacilityRevenueBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_SpecialFacilityRevenueBondsMember_53f681f5-bd80-495d-961a-b5a7f42b3573" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_77d72517-62f2-46bb-a4da-a6cabedc29a6" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteOneCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_77d72517-62f2-46bb-a4da-a6cabedc29a6" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember_11a32992-230d-443c-80d6-4fbda47d5232" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember_11a32992-230d-443c-80d6-4fbda47d5232" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember_17379033-0a58-40ad-bced-b666c2f6782c" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember_17379033-0a58-40ad-bced-b666c2f6782c" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes6.50Due2025Member_462d9a91-af8b-43f3-82a9-cf8ff1623980" xlink:href="aal-20211231.xsd#aal_SeniorNotes6.50Due2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_SeniorNotes6.50Due2025Member_462d9a91-af8b-43f3-82a9-cf8ff1623980" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes5.000Due2022Member_ffe49465-a42e-4196-b877-5f08cfd05366" xlink:href="aal-20211231.xsd#aal_SeniorNotes5.000Due2022Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_SeniorNotes5.000Due2022Member_ffe49465-a42e-4196-b877-5f08cfd05366" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote375Matures2025Member_f28d4b77-4d44-49c8-a1c1-d76e06da5208" xlink:href="aal-20211231.xsd#aal_SeniorNote375Matures2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_f40639be-f8df-4e55-8872-3387f4c27d52" xlink:to="loc_aal_SeniorNote375Matures2025Member_f28d4b77-4d44-49c8-a1c1-d76e06da5208" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_51f9a77d-cb6b-402c-ae48-c9f2f4d1507d" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_18fcd326-a94b-4d35-8254-31b8d9eb9741" xlink:to="loc_srt_RangeAxis_51f9a77d-cb6b-402c-ae48-c9f2f4d1507d" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_51f9a77d-cb6b-402c-ae48-c9f2f4d1507d_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_51f9a77d-cb6b-402c-ae48-c9f2f4d1507d" xlink:to="loc_srt_RangeMember_51f9a77d-cb6b-402c-ae48-c9f2f4d1507d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c0a9f334-4586-4898-aeba-c8755b4fbb33" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_51f9a77d-cb6b-402c-ae48-c9f2f4d1507d" xlink:to="loc_srt_RangeMember_c0a9f334-4586-4898-aeba-c8755b4fbb33" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_ea9d6261-31de-4c46-a6c4-3404ca8bce87" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c0a9f334-4586-4898-aeba-c8755b4fbb33" xlink:to="loc_srt_MinimumMember_ea9d6261-31de-4c46-a6c4-3404ca8bce87" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_defff9f6-c4a2-4b52-a33c-27f14e75996b" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c0a9f334-4586-4898-aeba-c8755b4fbb33" xlink:to="loc_srt_MaximumMember_defff9f6-c4a2-4b52-a33c-27f14e75996b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_3ae76e4a-d1bf-4674-85ea-c4a41bd017e2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_18fcd326-a94b-4d35-8254-31b8d9eb9741" xlink:to="loc_us-gaap_CreditFacilityAxis_3ae76e4a-d1bf-4674-85ea-c4a41bd017e2" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_3ae76e4a-d1bf-4674-85ea-c4a41bd017e2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_3ae76e4a-d1bf-4674-85ea-c4a41bd017e2" xlink:to="loc_us-gaap_CreditFacilityDomain_3ae76e4a-d1bf-4674-85ea-c4a41bd017e2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_bdab8cb3-a231-478c-8dfe-a89322b28618" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_3ae76e4a-d1bf-4674-85ea-c4a41bd017e2" xlink:to="loc_us-gaap_CreditFacilityDomain_bdab8cb3-a231-478c-8dfe-a89322b28618" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_21e6c4d9-5f03-43ba-9c43-11adbb83adfc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_bdab8cb3-a231-478c-8dfe-a89322b28618" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_21e6c4d9-5f03-43ba-9c43-11adbb83adfc" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_1e1eb0a7-0e58-425a-83a3-25e1dc66aa06" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_bdab8cb3-a231-478c-8dfe-a89322b28618" xlink:to="loc_us-gaap_LineOfCreditMember_1e1eb0a7-0e58-425a-83a3-25e1dc66aa06" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtSummaryofAvailabilityunderRevolvingCreditFacilitiesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtSummaryofAvailabilityunderRevolvingCreditFacilitiesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtSummaryofAvailabilityunderRevolvingCreditFacilitiesDetails" xlink:type="extended" id="i603de88429fb477389af9c3ae456e3c9_DebtSummaryofAvailabilityunderRevolvingCreditFacilitiesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_4192f347-932b-4b51-b622-68bf71480680" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_fb02185c-c32b-4a8a-9ce0-3cb2fe7f3968" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_4192f347-932b-4b51-b622-68bf71480680" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_fb02185c-c32b-4a8a-9ce0-3cb2fe7f3968" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_ee95aa5c-0b45-44eb-91f2-67ae68205aa5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_4192f347-932b-4b51-b622-68bf71480680" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_ee95aa5c-0b45-44eb-91f2-67ae68205aa5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_45b5cc26-1b79-4a42-8680-27a1b277c928" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_ee95aa5c-0b45-44eb-91f2-67ae68205aa5" xlink:to="loc_dei_LegalEntityAxis_45b5cc26-1b79-4a42-8680-27a1b277c928" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_45b5cc26-1b79-4a42-8680-27a1b277c928_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_45b5cc26-1b79-4a42-8680-27a1b277c928" xlink:to="loc_dei_EntityDomain_45b5cc26-1b79-4a42-8680-27a1b277c928_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_60d25ceb-413d-4328-8a9f-ce54ad3106e5" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_45b5cc26-1b79-4a42-8680-27a1b277c928" xlink:to="loc_dei_EntityDomain_60d25ceb-413d-4328-8a9f-ce54ad3106e5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_84495196-de0f-40f0-80c3-9444bd0bcfe3" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_60d25ceb-413d-4328-8a9f-ce54ad3106e5" xlink:to="loc_aal_AmericanAirlinesIncMember_84495196-de0f-40f0-80c3-9444bd0bcfe3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_f617d768-d51d-4408-b949-c9ee0ce9e461" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_ee95aa5c-0b45-44eb-91f2-67ae68205aa5" xlink:to="loc_us-gaap_CreditFacilityAxis_f617d768-d51d-4408-b949-c9ee0ce9e461" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_f617d768-d51d-4408-b949-c9ee0ce9e461_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_f617d768-d51d-4408-b949-c9ee0ce9e461" xlink:to="loc_us-gaap_CreditFacilityDomain_f617d768-d51d-4408-b949-c9ee0ce9e461_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_68f14aa1-2976-46b5-84a8-2a54276d0e9b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_f617d768-d51d-4408-b949-c9ee0ce9e461" xlink:to="loc_us-gaap_CreditFacilityDomain_68f14aa1-2976-46b5-84a8-2a54276d0e9b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_87c5746e-678b-4ff3-bc99-2261604731b8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_68f14aa1-2976-46b5-84a8-2a54276d0e9b" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_87c5746e-678b-4ff3-bc99-2261604731b8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_3e20a258-c5f4-40a9-95e7-f74624b5484f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_ee95aa5c-0b45-44eb-91f2-67ae68205aa5" xlink:to="loc_us-gaap_DebtInstrumentAxis_3e20a258-c5f4-40a9-95e7-f74624b5484f" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_3e20a258-c5f4-40a9-95e7-f74624b5484f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_3e20a258-c5f4-40a9-95e7-f74624b5484f" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_3e20a258-c5f4-40a9-95e7-f74624b5484f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_7a03c3b0-502c-4a8c-b59f-f44f0ea70ce5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_3e20a258-c5f4-40a9-95e7-f74624b5484f" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_7a03c3b0-502c-4a8c-b59f-f44f0ea70ce5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2013Member_8f32c803-661c-4442-89da-e0e5adabb09e" xlink:href="aal-20211231.xsd#aal_CreditFacility2013Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7a03c3b0-502c-4a8c-b59f-f44f0ea70ce5" xlink:to="loc_aal_CreditFacility2013Member_8f32c803-661c-4442-89da-e0e5adabb09e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2014Member_5a24e4af-0cae-4462-96e4-49552eab40c1" xlink:href="aal-20211231.xsd#aal_CreditFacility2014Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7a03c3b0-502c-4a8c-b59f-f44f0ea70ce5" xlink:to="loc_aal_CreditFacility2014Member_5a24e4af-0cae-4462-96e4-49552eab40c1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacilityApril2016Member_354c038e-d0bd-4be5-903b-73f404800bff" xlink:href="aal-20211231.xsd#aal_CreditFacilityApril2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7a03c3b0-502c-4a8c-b59f-f44f0ea70ce5" xlink:to="loc_aal_CreditFacilityApril2016Member_354c038e-d0bd-4be5-903b-73f404800bff" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ShortTermRevolvingAndOtherFacilitiesMember_4d412c44-3d00-4cd3-9c00-f70ed0d88307" xlink:href="aal-20211231.xsd#aal_ShortTermRevolvingAndOtherFacilitiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7a03c3b0-502c-4a8c-b59f-f44f0ea70ce5" xlink:to="loc_aal_ShortTermRevolvingAndOtherFacilitiesMember_4d412c44-3d00-4cd3-9c00-f70ed0d88307" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherShortTermRevolvingFacilityMember_cf074f0b-70b7-487b-81f4-36a1f14cf3e1" xlink:href="aal-20211231.xsd#aal_OtherShortTermRevolvingFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7a03c3b0-502c-4a8c-b59f-f44f0ea70ce5" xlink:to="loc_aal_OtherShortTermRevolvingFacilityMember_cf074f0b-70b7-487b-81f4-36a1f14cf3e1" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CargoReceivableFacilityMember_c6a62c7c-b77f-4fab-8a43-be4245e7de98" xlink:href="aal-20211231.xsd#aal_CargoReceivableFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_7a03c3b0-502c-4a8c-b59f-f44f0ea70ce5" xlink:to="loc_aal_CargoReceivableFacilityMember_c6a62c7c-b77f-4fab-8a43-be4245e7de98" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_c04029c1-5ebd-4914-bf9c-37cec644dc4c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_ee95aa5c-0b45-44eb-91f2-67ae68205aa5" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_c04029c1-5ebd-4914-bf9c-37cec644dc4c" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_c04029c1-5ebd-4914-bf9c-37cec644dc4c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_c04029c1-5ebd-4914-bf9c-37cec644dc4c" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_c04029c1-5ebd-4914-bf9c-37cec644dc4c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_678585ca-3bf3-4a83-8496-e24001b7abb2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_c04029c1-5ebd-4914-bf9c-37cec644dc4c" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_678585ca-3bf3-4a83-8496-e24001b7abb2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_735f6de4-eb61-4e17-8046-13ce8073e6ff" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_678585ca-3bf3-4a83-8496-e24001b7abb2" xlink:to="loc_us-gaap_SubsequentEventMember_735f6de4-eb61-4e17-8046-13ce8073e6ff" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtScheduleofMaturitiesofLongTermDebtDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtScheduleofMaturitiesofLongTermDebtDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtScheduleofMaturitiesofLongTermDebtDetails" xlink:type="extended" id="i4f6e7693802c48d184ea95f723dcc64f_DebtScheduleofMaturitiesofLongTermDebtDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_071af648-ac25-482c-8a27-57f07bf3c297" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_7cf72ba0-7aa3-4c5c-9efd-995e9b119070" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MaturitiesOfLongTermDebtAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_071af648-ac25-482c-8a27-57f07bf3c297" xlink:to="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_7cf72ba0-7aa3-4c5c-9efd-995e9b119070" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_70364e42-3b92-46b1-a57a-4f940d90fe38" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_7cf72ba0-7aa3-4c5c-9efd-995e9b119070" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_70364e42-3b92-46b1-a57a-4f940d90fe38" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_35d7921c-c2e5-44a6-99c2-82765ce30f30" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_7cf72ba0-7aa3-4c5c-9efd-995e9b119070" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_35d7921c-c2e5-44a6-99c2-82765ce30f30" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_265e6aaf-88dc-47c4-9775-5ade3b65beaf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_7cf72ba0-7aa3-4c5c-9efd-995e9b119070" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_265e6aaf-88dc-47c4-9775-5ade3b65beaf" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_27673d35-d175-4d86-af77-ee8385a03eb5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_7cf72ba0-7aa3-4c5c-9efd-995e9b119070" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_27673d35-d175-4d86-af77-ee8385a03eb5" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_754db422-f6ae-4288-892d-0ec97747228a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_7cf72ba0-7aa3-4c5c-9efd-995e9b119070" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_754db422-f6ae-4288-892d-0ec97747228a" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_5f1cea3e-dfe2-45d2-8e78-c637f8fa20d8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_7cf72ba0-7aa3-4c5c-9efd-995e9b119070" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_5f1cea3e-dfe2-45d2-8e78-c637f8fa20d8" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_4a6e3d44-798b-4def-8ee7-a0da2210a704" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MaturitiesOfLongTermDebtAbstract_7cf72ba0-7aa3-4c5c-9efd-995e9b119070" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_4a6e3d44-798b-4def-8ee7-a0da2210a704" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_71d35cc5-391f-4c82-a4d9-e3ee42e2634e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_071af648-ac25-482c-8a27-57f07bf3c297" xlink:to="loc_us-gaap_DebtInstrumentTable_71d35cc5-391f-4c82-a4d9-e3ee42e2634e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_47ff7624-5d27-48e4-8a75-6f5f0f059cd6" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_71d35cc5-391f-4c82-a4d9-e3ee42e2634e" xlink:to="loc_dei_LegalEntityAxis_47ff7624-5d27-48e4-8a75-6f5f0f059cd6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_47ff7624-5d27-48e4-8a75-6f5f0f059cd6_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_47ff7624-5d27-48e4-8a75-6f5f0f059cd6" xlink:to="loc_dei_EntityDomain_47ff7624-5d27-48e4-8a75-6f5f0f059cd6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f6f10a5f-be94-4705-9237-355cefa70061" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_47ff7624-5d27-48e4-8a75-6f5f0f059cd6" xlink:to="loc_dei_EntityDomain_f6f10a5f-be94-4705-9237-355cefa70061" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_e0e810d4-3e50-4b7b-b4d5-38c66c12b14f" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f6f10a5f-be94-4705-9237-355cefa70061" xlink:to="loc_aal_AmericanAirlinesIncMember_e0e810d4-3e50-4b7b-b4d5-38c66c12b14f" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/Debt20132014and2016CreditFacilitiesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#Debt20132014and2016CreditFacilitiesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/Debt20132014and2016CreditFacilitiesDetails" xlink:type="extended" id="ibeb6e9c744204cfa9df9ce9a699aaf4c_Debt20132014and2016CreditFacilitiesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_d64c1458-3a56-4891-aca0-736a4d1bbc33" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_d64c1458-3a56-4891-aca0-736a4d1bbc33" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_19927893-8db9-4b42-870d-c256315a00c2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_19927893-8db9-4b42-870d-c256315a00c2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_5c264738-cf41-47ca-bbbc-d5f86b8e3405" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_us-gaap_RepaymentsOfDebt_5c264738-cf41-47ca-bbbc-d5f86b8e3405" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentBasisSpreadOnVariableRateFloorInterestRate_67063d9d-c233-470d-ab72-078b7bb34658" xlink:href="aal-20211231.xsd#aal_DebtInstrumentBasisSpreadOnVariableRateFloorInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_aal_DebtInstrumentBasisSpreadOnVariableRateFloorInterestRate_67063d9d-c233-470d-ab72-078b7bb34658" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_0422e414-da35-42ec-95fe-d8b2ce8cba84" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCredit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_us-gaap_LineOfCredit_0422e414-da35-42ec-95fe-d8b2ce8cba84" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_19742f0f-d09b-47c4-a6ed-cb2e0761a4ae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_19742f0f-d09b-47c4-a6ed-cb2e0761a4ae" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_8cb5e01e-562d-4e52-84dc-f9fa7dc99005" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_us-gaap_LongTermDebt_8cb5e01e-562d-4e52-84dc-f9fa7dc99005" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentAnnualRepaymentPercentOfPrincipalBalance_6fb78ca5-0a3c-4d3e-bffa-d68e3aa6b8b3" xlink:href="aal-20211231.xsd#aal_DebtInstrumentAnnualRepaymentPercentOfPrincipalBalance"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_aal_DebtInstrumentAnnualRepaymentPercentOfPrincipalBalance_6fb78ca5-0a3c-4d3e-bffa-d68e3aa6b8b3" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_f506a718-91c9-4ba4-a7b2-5e69470da867" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_f506a718-91c9-4ba4-a7b2-5e69470da867" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentRestrictiveCovenantsMinimumAggregateLiquidityAmount_ce6fcd79-2133-420a-83dd-0fe8183545a3" xlink:href="aal-20211231.xsd#aal_DebtInstrumentRestrictiveCovenantsMinimumAggregateLiquidityAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_aal_DebtInstrumentRestrictiveCovenantsMinimumAggregateLiquidityAmount_ce6fcd79-2133-420a-83dd-0fe8183545a3" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_6df27fa0-e558-4fd2-af0a-7a735e35c280" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_09614b93-70ad-4b31-a06a-89e7a5b50301" xlink:to="loc_us-gaap_DebtInstrumentTable_6df27fa0-e558-4fd2-af0a-7a735e35c280" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9a0d43c0-8826-4905-9c6c-8ed0a910aaf1" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6df27fa0-e558-4fd2-af0a-7a735e35c280" xlink:to="loc_dei_LegalEntityAxis_9a0d43c0-8826-4905-9c6c-8ed0a910aaf1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9a0d43c0-8826-4905-9c6c-8ed0a910aaf1_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9a0d43c0-8826-4905-9c6c-8ed0a910aaf1" xlink:to="loc_dei_EntityDomain_9a0d43c0-8826-4905-9c6c-8ed0a910aaf1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6b7e2722-c255-46d0-95d5-86e238498c39" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9a0d43c0-8826-4905-9c6c-8ed0a910aaf1" xlink:to="loc_dei_EntityDomain_6b7e2722-c255-46d0-95d5-86e238498c39" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_7238f229-5594-4a79-9523-bb18ec1dbaa7" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_6b7e2722-c255-46d0-95d5-86e238498c39" xlink:to="loc_aal_AmericanAirlinesIncMember_7238f229-5594-4a79-9523-bb18ec1dbaa7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_0b97650a-fe14-4aff-b834-177a7e210b85" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6df27fa0-e558-4fd2-af0a-7a735e35c280" xlink:to="loc_us-gaap_CreditFacilityAxis_0b97650a-fe14-4aff-b834-177a7e210b85" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_0b97650a-fe14-4aff-b834-177a7e210b85_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_0b97650a-fe14-4aff-b834-177a7e210b85" xlink:to="loc_us-gaap_CreditFacilityDomain_0b97650a-fe14-4aff-b834-177a7e210b85_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_d81ce25a-16a5-41f7-ab98-e7b3a78030f3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_0b97650a-fe14-4aff-b834-177a7e210b85" xlink:to="loc_us-gaap_CreditFacilityDomain_d81ce25a-16a5-41f7-ab98-e7b3a78030f3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_d495a2f9-5b65-446f-92f8-40a7dc0b61ec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevolvingCreditFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_d81ce25a-16a5-41f7-ab98-e7b3a78030f3" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_d495a2f9-5b65-446f-92f8-40a7dc0b61ec" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_TermLoanFacilityMember_95dd368c-52a1-4819-81be-b2c4e9181d53" xlink:href="aal-20211231.xsd#aal_TermLoanFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_d81ce25a-16a5-41f7-ab98-e7b3a78030f3" xlink:to="loc_aal_TermLoanFacilityMember_95dd368c-52a1-4819-81be-b2c4e9181d53" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_83902a8d-1a10-41ed-a32e-14cac82fc4ca" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LetterOfCreditMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_d81ce25a-16a5-41f7-ab98-e7b3a78030f3" xlink:to="loc_us-gaap_LetterOfCreditMember_83902a8d-1a10-41ed-a32e-14cac82fc4ca" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_a5f60c2b-d840-45ad-8a4b-9b22bb75b207" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6df27fa0-e558-4fd2-af0a-7a735e35c280" xlink:to="loc_us-gaap_DebtInstrumentAxis_a5f60c2b-d840-45ad-8a4b-9b22bb75b207" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_a5f60c2b-d840-45ad-8a4b-9b22bb75b207_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_a5f60c2b-d840-45ad-8a4b-9b22bb75b207" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_a5f60c2b-d840-45ad-8a4b-9b22bb75b207_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_6e915185-36f3-4e5a-b9b7-1787c02f5f11" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_a5f60c2b-d840-45ad-8a4b-9b22bb75b207" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_6e915185-36f3-4e5a-b9b7-1787c02f5f11" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2013Member_6b8b1b12-2547-4052-ae6a-925744bb4069" xlink:href="aal-20211231.xsd#aal_CreditFacility2013Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6e915185-36f3-4e5a-b9b7-1787c02f5f11" xlink:to="loc_aal_CreditFacility2013Member_6b8b1b12-2547-4052-ae6a-925744bb4069" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2014Member_a04e2f4c-d80a-4140-91b3-3db8f6ebe06c" xlink:href="aal-20211231.xsd#aal_CreditFacility2014Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6e915185-36f3-4e5a-b9b7-1787c02f5f11" xlink:to="loc_aal_CreditFacility2014Member_a04e2f4c-d80a-4140-91b3-3db8f6ebe06c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacilityApril2016Member_8e44370c-217b-4525-9de4-8dc39bc23b8a" xlink:href="aal-20211231.xsd#aal_CreditFacilityApril2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6e915185-36f3-4e5a-b9b7-1787c02f5f11" xlink:to="loc_aal_CreditFacilityApril2016Member_8e44370c-217b-4525-9de4-8dc39bc23b8a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacilityDecember2016Member_c698104b-1cea-4846-a5c3-5682278b50a5" xlink:href="aal-20211231.xsd#aal_CreditFacilityDecember2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6e915185-36f3-4e5a-b9b7-1787c02f5f11" xlink:to="loc_aal_CreditFacilityDecember2016Member_c698104b-1cea-4846-a5c3-5682278b50a5" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SparePartsCreditFacilityApril2016Member_8b7be875-2b9f-4eb7-b074-83d3e0ab849f" xlink:href="aal-20211231.xsd#aal_SparePartsCreditFacilityApril2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_6e915185-36f3-4e5a-b9b7-1787c02f5f11" xlink:to="loc_aal_SparePartsCreditFacilityApril2016Member_8b7be875-2b9f-4eb7-b074-83d3e0ab849f" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_39c36f4a-6730-4dcb-a9f7-35076db692e2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6df27fa0-e558-4fd2-af0a-7a735e35c280" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_39c36f4a-6730-4dcb-a9f7-35076db692e2" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_39c36f4a-6730-4dcb-a9f7-35076db692e2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_39c36f4a-6730-4dcb-a9f7-35076db692e2" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_39c36f4a-6730-4dcb-a9f7-35076db692e2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_1607d570-d430-4449-9f27-5cb360b9e8bb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_39c36f4a-6730-4dcb-a9f7-35076db692e2" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_1607d570-d430-4449-9f27-5cb360b9e8bb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_cad44fae-f06f-49f9-955f-273fd38c3522" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_1607d570-d430-4449-9f27-5cb360b9e8bb" xlink:to="loc_us-gaap_SecuredDebtMember_cad44fae-f06f-49f9-955f-273fd38c3522" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_097624d8-4f5c-43f2-adf9-755575f57889" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6df27fa0-e558-4fd2-af0a-7a735e35c280" xlink:to="loc_us-gaap_VariableRateAxis_097624d8-4f5c-43f2-adf9-755575f57889" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_097624d8-4f5c-43f2-adf9-755575f57889_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_097624d8-4f5c-43f2-adf9-755575f57889" xlink:to="loc_us-gaap_VariableRateDomain_097624d8-4f5c-43f2-adf9-755575f57889_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_6580ab9c-a38d-4ac2-bc01-49d571656447" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_097624d8-4f5c-43f2-adf9-755575f57889" xlink:to="loc_us-gaap_VariableRateDomain_6580ab9c-a38d-4ac2-bc01-49d571656447" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_e8ebf865-1a69-4f28-8ab4-bdd197ebd201" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_6580ab9c-a38d-4ac2-bc01-49d571656447" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_e8ebf865-1a69-4f28-8ab4-bdd197ebd201" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_f5d256eb-2725-4cd0-8473-838238f83c99" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BaseRateMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_6580ab9c-a38d-4ac2-bc01-49d571656447" xlink:to="loc_us-gaap_BaseRateMember_f5d256eb-2725-4cd0-8473-838238f83c99" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/Debt1175SecuredSeniorNotesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#Debt1175SecuredSeniorNotesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/Debt1175SecuredSeniorNotesDetails" xlink:type="extended" id="iae18baef1ef448a68c8d3aea0a2d7b73_Debt1175SecuredSeniorNotesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_d8e6e56d-f78f-4213-8876-c31790096d91" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_f4e69905-7ac4-456e-b571-7e00a662fdfa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8e6e56d-f78f-4213-8876-c31790096d91" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_f4e69905-7ac4-456e-b571-7e00a662fdfa" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_c216efbe-8299-42af-b662-8d07a3ab660d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8e6e56d-f78f-4213-8876-c31790096d91" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_c216efbe-8299-42af-b662-8d07a3ab660d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LongTermDebtPricePercentageOfParValue_09d11459-53bd-47ef-8692-e30e2d16a52b" xlink:href="aal-20211231.xsd#aal_LongTermDebtPricePercentageOfParValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8e6e56d-f78f-4213-8876-c31790096d91" xlink:to="loc_aal_LongTermDebtPricePercentageOfParValue_09d11459-53bd-47ef-8692-e30e2d16a52b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_46875121-ba0e-43b0-b788-ac2a4fc14f6c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8e6e56d-f78f-4213-8876-c31790096d91" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_46875121-ba0e-43b0-b788-ac2a4fc14f6c" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentCovenantDebtServiceCoverageRatio_5a5ebc08-354c-43b7-8690-2c71ee002fd0" xlink:href="aal-20211231.xsd#aal_DebtInstrumentCovenantDebtServiceCoverageRatio"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8e6e56d-f78f-4213-8876-c31790096d91" xlink:to="loc_aal_DebtInstrumentCovenantDebtServiceCoverageRatio_5a5ebc08-354c-43b7-8690-2c71ee002fd0" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentAdditionalInterestRateIfCollateralCoverageRatioNotMet_945175e4-f353-4fb4-8176-1088b758b269" xlink:href="aal-20211231.xsd#aal_DebtInstrumentAdditionalInterestRateIfCollateralCoverageRatioNotMet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8e6e56d-f78f-4213-8876-c31790096d91" xlink:to="loc_aal_DebtInstrumentAdditionalInterestRateIfCollateralCoverageRatioNotMet_945175e4-f353-4fb4-8176-1088b758b269" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_18f34d30-fd56-4852-8bb0-74cccf252795" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d8e6e56d-f78f-4213-8876-c31790096d91" xlink:to="loc_us-gaap_DebtInstrumentTable_18f34d30-fd56-4852-8bb0-74cccf252795" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_b0d577bd-d93a-4507-a8e8-96e809f9826f" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_18f34d30-fd56-4852-8bb0-74cccf252795" xlink:to="loc_dei_LegalEntityAxis_b0d577bd-d93a-4507-a8e8-96e809f9826f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b0d577bd-d93a-4507-a8e8-96e809f9826f_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_b0d577bd-d93a-4507-a8e8-96e809f9826f" xlink:to="loc_dei_EntityDomain_b0d577bd-d93a-4507-a8e8-96e809f9826f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b6ec19e8-0c07-4194-aba4-020f280bbaad" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_b0d577bd-d93a-4507-a8e8-96e809f9826f" xlink:to="loc_dei_EntityDomain_b6ec19e8-0c07-4194-aba4-020f280bbaad" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_e19e0282-9548-446e-9ec5-c3d1666f2321" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b6ec19e8-0c07-4194-aba4-020f280bbaad" xlink:to="loc_aal_AmericanAirlinesIncMember_e19e0282-9548-446e-9ec5-c3d1666f2321" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_7e7fee55-6526-49b2-9e87-adf7676e3e99" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_18f34d30-fd56-4852-8bb0-74cccf252795" xlink:to="loc_us-gaap_DebtInstrumentAxis_7e7fee55-6526-49b2-9e87-adf7676e3e99" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_7e7fee55-6526-49b2-9e87-adf7676e3e99_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_7e7fee55-6526-49b2-9e87-adf7676e3e99" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_7e7fee55-6526-49b2-9e87-adf7676e3e99_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_02f6a33c-42f4-48b4-ae4b-8ea1967b657d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_7e7fee55-6526-49b2-9e87-adf7676e3e99" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_02f6a33c-42f4-48b4-ae4b-8ea1967b657d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes11.75Due2025Member_5006303f-a01a-45de-9a45-d5e8c0846592" xlink:href="aal-20211231.xsd#aal_SeniorNotes11.75Due2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_02f6a33c-42f4-48b4-ae4b-8ea1967b657d" xlink:to="loc_aal_SeniorNotes11.75Due2025Member_5006303f-a01a-45de-9a45-d5e8c0846592" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_bd3d403f-4eca-4647-a2e1-5295151e1226" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_18f34d30-fd56-4852-8bb0-74cccf252795" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_bd3d403f-4eca-4647-a2e1-5295151e1226" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_bd3d403f-4eca-4647-a2e1-5295151e1226_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_bd3d403f-4eca-4647-a2e1-5295151e1226" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_bd3d403f-4eca-4647-a2e1-5295151e1226_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_26f82a88-3764-43ff-818f-f1f84b66bb36" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_bd3d403f-4eca-4647-a2e1-5295151e1226" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_26f82a88-3764-43ff-818f-f1f84b66bb36" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_a07446a6-331b-42ab-ab8e-11e3b828b9c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_26f82a88-3764-43ff-818f-f1f84b66bb36" xlink:to="loc_us-gaap_SeniorNotesMember_a07446a6-331b-42ab-ab8e-11e3b828b9c7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_77d3091c-d9d7-4a9b-bbd9-2d98bcaf76a0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_18f34d30-fd56-4852-8bb0-74cccf252795" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_77d3091c-d9d7-4a9b-bbd9-2d98bcaf76a0" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_77d3091c-d9d7-4a9b-bbd9-2d98bcaf76a0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_77d3091c-d9d7-4a9b-bbd9-2d98bcaf76a0" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_77d3091c-d9d7-4a9b-bbd9-2d98bcaf76a0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_2d33f2b7-0d02-4764-81f0-5a3a3617b2ad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_77d3091c-d9d7-4a9b-bbd9-2d98bcaf76a0" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_2d33f2b7-0d02-4764-81f0-5a3a3617b2ad" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentRedemptionPeriodUponChangeOfControlMember_15fcb140-a2c3-4a26-9502-8c464a2a4a09" xlink:href="aal-20211231.xsd#aal_DebtInstrumentRedemptionPeriodUponChangeOfControlMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_2d33f2b7-0d02-4764-81f0-5a3a3617b2ad" xlink:to="loc_aal_DebtInstrumentRedemptionPeriodUponChangeOfControlMember_15fcb140-a2c3-4a26-9502-8c464a2a4a09" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/Debt1075SeniorSecuredNotesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#Debt1075SeniorSecuredNotesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/Debt1075SeniorSecuredNotesDetails" xlink:type="extended" id="i6af1613f93e24b0a94a816c1f472fc50_Debt1075SeniorSecuredNotesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_bddc8ec4-a49b-43c0-9491-11122c774eab" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_82b1d2b4-1a0c-403b-b450-a671ede24a4c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bddc8ec4-a49b-43c0-9491-11122c774eab" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_82b1d2b4-1a0c-403b-b450-a671ede24a4c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_335ce7f0-6032-4b4c-be32-e4e46336c2d6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bddc8ec4-a49b-43c0-9491-11122c774eab" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_335ce7f0-6032-4b4c-be32-e4e46336c2d6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentAlternativeInterestRate_d4db15da-3c1d-4a26-8251-c6842556afb8" xlink:href="aal-20211231.xsd#aal_DebtInstrumentAlternativeInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bddc8ec4-a49b-43c0-9491-11122c774eab" xlink:to="loc_aal_DebtInstrumentAlternativeInterestRate_d4db15da-3c1d-4a26-8251-c6842556afb8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentConditionalAdditionalBorrowingCapacity_0e6f7ef9-1e31-4577-aff3-4a790fdaad07" xlink:href="aal-20211231.xsd#aal_DebtInstrumentConditionalAdditionalBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bddc8ec4-a49b-43c0-9491-11122c774eab" xlink:to="loc_aal_DebtInstrumentConditionalAdditionalBorrowingCapacity_0e6f7ef9-1e31-4577-aff3-4a790fdaad07" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_e0912e31-b263-437f-b439-61564150a2cc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bddc8ec4-a49b-43c0-9491-11122c774eab" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_e0912e31-b263-437f-b439-61564150a2cc" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentCovenantTermMinimumUnrestrictedCashAndCashEquivalents_bcb111be-fb05-48b1-933a-40c9271f226c" xlink:href="aal-20211231.xsd#aal_DebtInstrumentCovenantTermMinimumUnrestrictedCashAndCashEquivalents"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bddc8ec4-a49b-43c0-9491-11122c774eab" xlink:to="loc_aal_DebtInstrumentCovenantTermMinimumUnrestrictedCashAndCashEquivalents_bcb111be-fb05-48b1-933a-40c9271f226c" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_90336f29-1152-4832-bfe3-703ed9a2fff8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_bddc8ec4-a49b-43c0-9491-11122c774eab" xlink:to="loc_us-gaap_DebtInstrumentTable_90336f29-1152-4832-bfe3-703ed9a2fff8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_61b01f63-8b2b-4258-9236-5e3e7411e397" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_90336f29-1152-4832-bfe3-703ed9a2fff8" xlink:to="loc_dei_LegalEntityAxis_61b01f63-8b2b-4258-9236-5e3e7411e397" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_61b01f63-8b2b-4258-9236-5e3e7411e397_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_61b01f63-8b2b-4258-9236-5e3e7411e397" xlink:to="loc_dei_EntityDomain_61b01f63-8b2b-4258-9236-5e3e7411e397_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ea3febb4-f372-4aa1-abe7-59264c36463c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_61b01f63-8b2b-4258-9236-5e3e7411e397" xlink:to="loc_dei_EntityDomain_ea3febb4-f372-4aa1-abe7-59264c36463c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_46335488-55c8-401e-a965-9a4cf7f82a16" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ea3febb4-f372-4aa1-abe7-59264c36463c" xlink:to="loc_aal_AmericanAirlinesIncMember_46335488-55c8-401e-a965-9a4cf7f82a16" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_7d879a1c-f527-44b1-b785-76daefa9c6c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_90336f29-1152-4832-bfe3-703ed9a2fff8" xlink:to="loc_us-gaap_DebtInstrumentAxis_7d879a1c-f527-44b1-b785-76daefa9c6c9" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_7d879a1c-f527-44b1-b785-76daefa9c6c9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_7d879a1c-f527-44b1-b785-76daefa9c6c9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_7d879a1c-f527-44b1-b785-76daefa9c6c9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_e7cf06f4-69cb-44f3-bb6a-a7cb24603615" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_7d879a1c-f527-44b1-b785-76daefa9c6c9" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_e7cf06f4-69cb-44f3-bb6a-a7cb24603615" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A1075SeniorSecuredNotesMember_bbaac58d-aeb1-40b9-a8ef-daa248f65324" xlink:href="aal-20211231.xsd#aal_A1075SeniorSecuredNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e7cf06f4-69cb-44f3-bb6a-a7cb24603615" xlink:to="loc_aal_A1075SeniorSecuredNotesMember_bbaac58d-aeb1-40b9-a8ef-daa248f65324" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A1075SeniorSecuredNotesIPNotesMember_1ef9591e-b247-475a-83a7-d4c9f6ec9548" xlink:href="aal-20211231.xsd#aal_A1075SeniorSecuredNotesIPNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e7cf06f4-69cb-44f3-bb6a-a7cb24603615" xlink:to="loc_aal_A1075SeniorSecuredNotesIPNotesMember_1ef9591e-b247-475a-83a7-d4c9f6ec9548" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A1075SeniorSecuredNotesLGADCANotesMember_1ae6cba0-307b-463d-9e89-0c91fa638f42" xlink:href="aal-20211231.xsd#aal_A1075SeniorSecuredNotesLGADCANotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e7cf06f4-69cb-44f3-bb6a-a7cb24603615" xlink:to="loc_aal_A1075SeniorSecuredNotesLGADCANotesMember_1ae6cba0-307b-463d-9e89-0c91fa638f42" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_05d13d1f-d54f-43a9-91fe-6b6c2464bc68" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_90336f29-1152-4832-bfe3-703ed9a2fff8" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_05d13d1f-d54f-43a9-91fe-6b6c2464bc68" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_05d13d1f-d54f-43a9-91fe-6b6c2464bc68_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_05d13d1f-d54f-43a9-91fe-6b6c2464bc68" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_05d13d1f-d54f-43a9-91fe-6b6c2464bc68_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_8d584cf6-ca5f-48a7-889b-78abaf9cdeae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_05d13d1f-d54f-43a9-91fe-6b6c2464bc68" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_8d584cf6-ca5f-48a7-889b-78abaf9cdeae" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_2508d1ca-0046-4591-b278-08b817dec765" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_8d584cf6-ca5f-48a7-889b-78abaf9cdeae" xlink:to="loc_us-gaap_SeniorNotesMember_2508d1ca-0046-4591-b278-08b817dec765" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentInKindPIKNoteMember_da795026-c082-4c14-a684-1d0baaa1512b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentInKindPIKNoteMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_8d584cf6-ca5f-48a7-889b-78abaf9cdeae" xlink:to="loc_us-gaap_PaymentInKindPIKNoteMember_da795026-c082-4c14-a684-1d0baaa1512b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_4cabada7-b1e5-4392-82cd-4587caa8f203" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_90336f29-1152-4832-bfe3-703ed9a2fff8" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_4cabada7-b1e5-4392-82cd-4587caa8f203" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_4cabada7-b1e5-4392-82cd-4587caa8f203_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_4cabada7-b1e5-4392-82cd-4587caa8f203" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_4cabada7-b1e5-4392-82cd-4587caa8f203_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_e9580c51-f07e-4045-9cd4-90f3341414c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_4cabada7-b1e5-4392-82cd-4587caa8f203" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_e9580c51-f07e-4045-9cd4-90f3341414c9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_5b5a0770-5a29-4771-8013-64e811668b30" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodOneMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_e9580c51-f07e-4045-9cd4-90f3341414c9" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodOneMember_5b5a0770-5a29-4771-8013-64e811668b30" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_49203424-4440-4d7a-9532-898f37778fc0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodTwoMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_e9580c51-f07e-4045-9cd4-90f3341414c9" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodTwoMember_49203424-4440-4d7a-9532-898f37778fc0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_087267da-2808-42ec-a0cd-301ab732005a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodThreeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_e9580c51-f07e-4045-9cd4-90f3341414c9" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodThreeMember_087267da-2808-42ec-a0cd-301ab732005a" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtTreasuryLoanAgreementDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtTreasuryLoanAgreementDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtTreasuryLoanAgreementDetails" xlink:type="extended" id="ib54cb0c9d3a443b8954405b9089456ee_DebtTreasuryLoanAgreementDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_3a7182cf-7875-4839-8070-8eecd31d1b8f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_d21e1d9c-baa8-44ba-935c-b111a8392077" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3a7182cf-7875-4839-8070-8eecd31d1b8f" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_d21e1d9c-baa8-44ba-935c-b111a8392077" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_4920cb71-3fb2-4a78-8388-6d48fdd366ff" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3a7182cf-7875-4839-8070-8eecd31d1b8f" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_4920cb71-3fb2-4a78-8388-6d48fdd366ff" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_7679de43-b145-4bef-bc48-2879994b2fe3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3a7182cf-7875-4839-8070-8eecd31d1b8f" xlink:to="loc_us-gaap_RepaymentsOfDebt_7679de43-b145-4bef-bc48-2879994b2fe3" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_322d5fc2-7367-4e1d-b450-30cc935098dc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3a7182cf-7875-4839-8070-8eecd31d1b8f" xlink:to="loc_us-gaap_DebtInstrumentTable_322d5fc2-7367-4e1d-b450-30cc935098dc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_94a2a432-633f-4065-942f-7048a72c1557" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_322d5fc2-7367-4e1d-b450-30cc935098dc" xlink:to="loc_dei_LegalEntityAxis_94a2a432-633f-4065-942f-7048a72c1557" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_94a2a432-633f-4065-942f-7048a72c1557_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_94a2a432-633f-4065-942f-7048a72c1557" xlink:to="loc_dei_EntityDomain_94a2a432-633f-4065-942f-7048a72c1557_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ace9192d-6eaa-4f2e-bf21-273a7032113a" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_94a2a432-633f-4065-942f-7048a72c1557" xlink:to="loc_dei_EntityDomain_ace9192d-6eaa-4f2e-bf21-273a7032113a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_a8af03be-eb1e-413a-af99-00e4133bdc20" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ace9192d-6eaa-4f2e-bf21-273a7032113a" xlink:to="loc_aal_AmericanAirlinesIncMember_a8af03be-eb1e-413a-af99-00e4133bdc20" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_c45e0c03-e465-43c2-b223-31726daf892b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_322d5fc2-7367-4e1d-b450-30cc935098dc" xlink:to="loc_us-gaap_CreditFacilityAxis_c45e0c03-e465-43c2-b223-31726daf892b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_c45e0c03-e465-43c2-b223-31726daf892b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_c45e0c03-e465-43c2-b223-31726daf892b" xlink:to="loc_us-gaap_CreditFacilityDomain_c45e0c03-e465-43c2-b223-31726daf892b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_ad9fed99-1530-4f62-9c4c-5e3d67c5f1b1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CreditFacilityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_c45e0c03-e465-43c2-b223-31726daf892b" xlink:to="loc_us-gaap_CreditFacilityDomain_ad9fed99-1530-4f62-9c4c-5e3d67c5f1b1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_eaeb8b65-ed74-42b1-b078-9ac3f0400790" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LineOfCreditMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_ad9fed99-1530-4f62-9c4c-5e3d67c5f1b1" xlink:to="loc_us-gaap_LineOfCreditMember_eaeb8b65-ed74-42b1-b078-9ac3f0400790" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_9a219925-9ae9-47c2-8153-36f65d58368d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_322d5fc2-7367-4e1d-b450-30cc935098dc" xlink:to="loc_us-gaap_DebtInstrumentAxis_9a219925-9ae9-47c2-8153-36f65d58368d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9a219925-9ae9-47c2-8153-36f65d58368d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_9a219925-9ae9-47c2-8153-36f65d58368d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9a219925-9ae9-47c2-8153-36f65d58368d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_83d717ee-769c-4e48-a160-07e2030e4689" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_9a219925-9ae9-47c2-8153-36f65d58368d" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_83d717ee-769c-4e48-a160-07e2030e4689" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_TreasuryLoanAgreementCARESActMember_cf37da8d-619a-4af7-a50f-4ffc1accc791" xlink:href="aal-20211231.xsd#aal_TreasuryLoanAgreementCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_83d717ee-769c-4e48-a160-07e2030e4689" xlink:to="loc_aal_TreasuryLoanAgreementCARESActMember_cf37da8d-619a-4af7-a50f-4ffc1accc791" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtAAdvantageFinancingDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtAAdvantageFinancingDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtAAdvantageFinancingDetails" xlink:type="extended" id="ie28a5e361b1143b684ca1f0e2eeb61cc_DebtAAdvantageFinancingDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_7cb0fe92-5c05-424f-94cc-d82525a86429" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_7cb0fe92-5c05-424f-94cc-d82525a86429" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_5f780c8b-cccb-44b6-9890-74618a58669b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_5f780c8b-cccb-44b6-9890-74618a58669b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_3b8f9ad1-dd66-4be5-bfa7-981deda35fb1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_3b8f9ad1-dd66-4be5-bfa7-981deda35fb1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentPeriodicPayment_74208df9-0281-4679-899f-a4a5fece1493" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentPeriodicPayment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_us-gaap_DebtInstrumentPeriodicPayment_74208df9-0281-4679-899f-a4a5fece1493" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_ed3e31c0-2a7f-4c80-850f-7e5a2f464014" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_ed3e31c0-2a7f-4c80-850f-7e5a2f464014" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_4262e91f-05eb-49ff-97d8-3f0c1feee321" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtPercentageBearingVariableInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_us-gaap_LongTermDebtPercentageBearingVariableInterestRate_4262e91f-05eb-49ff-97d8-3f0c1feee321" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_8a933909-d157-4a81-9404-9907570728c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_8a933909-d157-4a81-9404-9907570728c3" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentMandatoryPrepaymentAmountThresholdNetProceedsFromPrePaidFrequentFlyer_13aaa797-fd24-45c1-b79d-9b7458143267" xlink:href="aal-20211231.xsd#aal_DebtInstrumentMandatoryPrepaymentAmountThresholdNetProceedsFromPrePaidFrequentFlyer"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_aal_DebtInstrumentMandatoryPrepaymentAmountThresholdNetProceedsFromPrePaidFrequentFlyer_13aaa797-fd24-45c1-b79d-9b7458143267" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentCovenantTermsThresholdNetProceedsFromPrePaidFrequentFlyer_22092938-dbe7-4cc8-a5be-7ed8d8b0ace9" xlink:href="aal-20211231.xsd#aal_DebtInstrumentCovenantTermsThresholdNetProceedsFromPrePaidFrequentFlyer"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_aal_DebtInstrumentCovenantTermsThresholdNetProceedsFromPrePaidFrequentFlyer_22092938-dbe7-4cc8-a5be-7ed8d8b0ace9" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentCovenantTermsPercentageOfCashReceiptsDepositedInCollectionAccount_60912bd9-c4e8-42c8-8dce-441d00dcdcd0" xlink:href="aal-20211231.xsd#aal_DebtInstrumentCovenantTermsPercentageOfCashReceiptsDepositedInCollectionAccount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_aal_DebtInstrumentCovenantTermsPercentageOfCashReceiptsDepositedInCollectionAccount_60912bd9-c4e8-42c8-8dce-441d00dcdcd0" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentCovenantTermsMinimumLiquidity_71a7da1c-980e-4171-9605-50776acc6c0c" xlink:href="aal-20211231.xsd#aal_DebtInstrumentCovenantTermsMinimumLiquidity"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_aal_DebtInstrumentCovenantTermsMinimumLiquidity_71a7da1c-980e-4171-9605-50776acc6c0c" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_defcaaef-bd38-4df6-aed4-c4150b9a17bc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_d37796a2-2bbb-4c91-95b8-b680400118fd" xlink:to="loc_us-gaap_DebtInstrumentTable_defcaaef-bd38-4df6-aed4-c4150b9a17bc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_93658ba5-b0a7-4be2-9422-f5dc51613a88" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_defcaaef-bd38-4df6-aed4-c4150b9a17bc" xlink:to="loc_us-gaap_DebtInstrumentAxis_93658ba5-b0a7-4be2-9422-f5dc51613a88" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_93658ba5-b0a7-4be2-9422-f5dc51613a88_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_93658ba5-b0a7-4be2-9422-f5dc51613a88" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_93658ba5-b0a7-4be2-9422-f5dc51613a88_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_44dd04eb-e840-4be9-b8e2-5d77664f5160" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_93658ba5-b0a7-4be2-9422-f5dc51613a88" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_44dd04eb-e840-4be9-b8e2-5d77664f5160" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote550Matures2026Member_27c10e68-dc20-432c-8562-b3fae0ba7cf6" xlink:href="aal-20211231.xsd#aal_SeniorNote550Matures2026Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_44dd04eb-e840-4be9-b8e2-5d77664f5160" xlink:to="loc_aal_SeniorNote550Matures2026Member_27c10e68-dc20-432c-8562-b3fae0ba7cf6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote575Matures2029Member_831ecc79-0b45-4342-8073-d45b862b1498" xlink:href="aal-20211231.xsd#aal_SeniorNote575Matures2029Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_44dd04eb-e840-4be9-b8e2-5d77664f5160" xlink:to="loc_aal_SeniorNote575Matures2029Member_831ecc79-0b45-4342-8073-d45b862b1498" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AAdvantageTermLoanFacilityMember_ab1ebd97-6f8e-4941-8d3e-a8c3d010500e" xlink:href="aal-20211231.xsd#aal_AAdvantageTermLoanFacilityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_44dd04eb-e840-4be9-b8e2-5d77664f5160" xlink:to="loc_aal_AAdvantageTermLoanFacilityMember_ab1ebd97-6f8e-4941-8d3e-a8c3d010500e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_dc325db8-2540-45a5-9ac7-147ed3a25f25" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_defcaaef-bd38-4df6-aed4-c4150b9a17bc" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_dc325db8-2540-45a5-9ac7-147ed3a25f25" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_dc325db8-2540-45a5-9ac7-147ed3a25f25_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_dc325db8-2540-45a5-9ac7-147ed3a25f25" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_dc325db8-2540-45a5-9ac7-147ed3a25f25_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_961c8e62-e31c-4a27-b91a-ce4879f644d3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_dc325db8-2540-45a5-9ac7-147ed3a25f25" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_961c8e62-e31c-4a27-b91a-ce4879f644d3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_b8ee8b4b-d4db-47c9-b924-82b88df93168" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_961c8e62-e31c-4a27-b91a-ce4879f644d3" xlink:to="loc_us-gaap_SeniorNotesMember_b8ee8b4b-d4db-47c9-b924-82b88df93168" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_8d18b8ff-ecdb-4f80-b581-ebec619f2cb4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_961c8e62-e31c-4a27-b91a-ce4879f644d3" xlink:to="loc_us-gaap_SecuredDebtMember_8d18b8ff-ecdb-4f80-b581-ebec619f2cb4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_37e47fde-c651-4fa7-a88a-263b070ab107" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_defcaaef-bd38-4df6-aed4-c4150b9a17bc" xlink:to="loc_us-gaap_VariableRateAxis_37e47fde-c651-4fa7-a88a-263b070ab107" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_37e47fde-c651-4fa7-a88a-263b070ab107_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_37e47fde-c651-4fa7-a88a-263b070ab107" xlink:to="loc_us-gaap_VariableRateDomain_37e47fde-c651-4fa7-a88a-263b070ab107_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_bff14c9c-5af6-415c-8ba7-39dc6ee04248" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_37e47fde-c651-4fa7-a88a-263b070ab107" xlink:to="loc_us-gaap_VariableRateDomain_bff14c9c-5af6-415c-8ba7-39dc6ee04248" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_fd290c3b-4dc8-441a-9d70-526646ad3a72" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_bff14c9c-5af6-415c-8ba7-39dc6ee04248" xlink:to="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_fd290c3b-4dc8-441a-9d70-526646ad3a72" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_dbb4dbac-0f2b-4daa-bfdc-440e841f3361" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_defcaaef-bd38-4df6-aed4-c4150b9a17bc" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_dbb4dbac-0f2b-4daa-bfdc-440e841f3361" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_dbb4dbac-0f2b-4daa-bfdc-440e841f3361_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_dbb4dbac-0f2b-4daa-bfdc-440e841f3361" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_dbb4dbac-0f2b-4daa-bfdc-440e841f3361_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_12eca1d1-c627-4324-913a-2bb26c23e161" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPeriodDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentRedemptionPeriodAxis_dbb4dbac-0f2b-4daa-bfdc-440e841f3361" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPeriodDomain_12eca1d1-c627-4324-913a-2bb26c23e161" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_11303206-7fa5-447c-b400-d7288aa36558" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_defcaaef-bd38-4df6-aed4-c4150b9a17bc" xlink:to="loc_srt_RangeAxis_11303206-7fa5-447c-b400-d7288aa36558" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_11303206-7fa5-447c-b400-d7288aa36558_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_11303206-7fa5-447c-b400-d7288aa36558" xlink:to="loc_srt_RangeMember_11303206-7fa5-447c-b400-d7288aa36558_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_96240f4e-3ab1-4f09-a843-27bd7317e7b6" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_11303206-7fa5-447c-b400-d7288aa36558" xlink:to="loc_srt_RangeMember_96240f4e-3ab1-4f09-a843-27bd7317e7b6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_eb9f0a4b-469a-4781-bff3-d99d6efc831c" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_96240f4e-3ab1-4f09-a843-27bd7317e7b6" xlink:to="loc_srt_MinimumMember_eb9f0a4b-469a-4781-bff3-d99d6efc831c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_StatementScenarioAxis_7363916b-96e7-4148-b78a-d36e724767a4" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_StatementScenarioAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_defcaaef-bd38-4df6-aed4-c4150b9a17bc" xlink:to="loc_srt_StatementScenarioAxis_7363916b-96e7-4148-b78a-d36e724767a4" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_7363916b-96e7-4148-b78a-d36e724767a4_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementScenarioAxis_7363916b-96e7-4148-b78a-d36e724767a4" xlink:to="loc_srt_ScenarioUnspecifiedDomain_7363916b-96e7-4148-b78a-d36e724767a4_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioUnspecifiedDomain_1688a29b-fc73-4e7e-a509-c964a4fc040c" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ScenarioUnspecifiedDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementScenarioAxis_7363916b-96e7-4148-b78a-d36e724767a4" xlink:to="loc_srt_ScenarioUnspecifiedDomain_1688a29b-fc73-4e7e-a509-c964a4fc040c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioForecastMember_4f47c5c4-c442-4f93-8add-39cfb1833946" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ScenarioForecastMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ScenarioUnspecifiedDomain_1688a29b-fc73-4e7e-a509-c964a4fc040c" xlink:to="loc_srt_ScenarioForecastMember_4f47c5c4-c442-4f93-8add-39cfb1833946" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtEETCsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtEETCsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtEETCsDetails" xlink:type="extended" id="i923c62419d9f4360a18ede6624ff9515_DebtEETCsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_7d9cd472-18bf-4b2d-b2c7-66afa55bb822" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_dfe6cba6-4cb9-4d17-b2f1-5ca8b7a46ff9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7d9cd472-18bf-4b2d-b2c7-66afa55bb822" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_dfe6cba6-4cb9-4d17-b2f1-5ca8b7a46ff9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftFinancedByDebtIssuance_f425a12d-0b15-49dd-ad77-b3236c707323" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftFinancedByDebtIssuance"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7d9cd472-18bf-4b2d-b2c7-66afa55bb822" xlink:to="loc_aal_NumberOfAircraftFinancedByDebtIssuance_f425a12d-0b15-49dd-ad77-b3236c707323" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_11106cc0-e1a5-4b98-9708-4c528607a555" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7d9cd472-18bf-4b2d-b2c7-66afa55bb822" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_11106cc0-e1a5-4b98-9708-4c528607a555" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftsFinancedThroughRepurchasedDebt_56be88d7-a909-4c93-928b-e273135370f5" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftsFinancedThroughRepurchasedDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7d9cd472-18bf-4b2d-b2c7-66afa55bb822" xlink:to="loc_aal_NumberOfAircraftsFinancedThroughRepurchasedDebt_56be88d7-a909-4c93-928b-e273135370f5" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsHeldInEscrowFromIssuanceOfDebt_b3043b79-017d-41b2-894a-0d33d5cf1296" xlink:href="aal-20211231.xsd#aal_ProceedsHeldInEscrowFromIssuanceOfDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7d9cd472-18bf-4b2d-b2c7-66afa55bb822" xlink:to="loc_aal_ProceedsHeldInEscrowFromIssuanceOfDebt_b3043b79-017d-41b2-894a-0d33d5cf1296" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_1117bcea-213a-4205-aca8-78aebaa59f72" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_7d9cd472-18bf-4b2d-b2c7-66afa55bb822" xlink:to="loc_us-gaap_DebtInstrumentTable_1117bcea-213a-4205-aca8-78aebaa59f72" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f4ddfab2-02bb-4bd3-a978-1475b4e3229c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1117bcea-213a-4205-aca8-78aebaa59f72" xlink:to="loc_dei_LegalEntityAxis_f4ddfab2-02bb-4bd3-a978-1475b4e3229c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f4ddfab2-02bb-4bd3-a978-1475b4e3229c_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f4ddfab2-02bb-4bd3-a978-1475b4e3229c" xlink:to="loc_dei_EntityDomain_f4ddfab2-02bb-4bd3-a978-1475b4e3229c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_24a2dba2-8164-45e8-b464-01e4fde0fb55" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f4ddfab2-02bb-4bd3-a978-1475b4e3229c" xlink:to="loc_dei_EntityDomain_24a2dba2-8164-45e8-b464-01e4fde0fb55" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_87209bca-cffb-42b5-a248-e0c9b88c9de1" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_24a2dba2-8164-45e8-b464-01e4fde0fb55" xlink:to="loc_aal_AmericanAirlinesIncMember_87209bca-cffb-42b5-a248-e0c9b88c9de1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_57e041b6-a341-4ffa-840f-54c4366a3a28" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1117bcea-213a-4205-aca8-78aebaa59f72" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_57e041b6-a341-4ffa-840f-54c4366a3a28" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_57e041b6-a341-4ffa-840f-54c4366a3a28_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_57e041b6-a341-4ffa-840f-54c4366a3a28" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_57e041b6-a341-4ffa-840f-54c4366a3a28_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_05f0027e-c53c-4e24-929d-61851fdc111e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_57e041b6-a341-4ffa-840f-54c4366a3a28" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_05f0027e-c53c-4e24-929d-61851fdc111e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnhancedEquipmentTrustCertificateMember_c5d391ca-d78e-43fa-8e25-faafdcf7e2d3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EnhancedEquipmentTrustCertificateMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_05f0027e-c53c-4e24-929d-61851fdc111e" xlink:to="loc_us-gaap_EnhancedEquipmentTrustCertificateMember_c5d391ca-d78e-43fa-8e25-faafdcf7e2d3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_d93455fa-5c6e-4e79-b013-0ff5db15fbf1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1117bcea-213a-4205-aca8-78aebaa59f72" xlink:to="loc_us-gaap_DebtInstrumentAxis_d93455fa-5c6e-4e79-b013-0ff5db15fbf1" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_d93455fa-5c6e-4e79-b013-0ff5db15fbf1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_d93455fa-5c6e-4e79-b013-0ff5db15fbf1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_d93455fa-5c6e-4e79-b013-0ff5db15fbf1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_8638a0bc-d418-49ce-90fa-a0ed1ec1c5b2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_d93455fa-5c6e-4e79-b013-0ff5db15fbf1" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_8638a0bc-d418-49ce-90fa-a0ed1ec1c5b2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EnhancedEquipmentTrustCertificates20211Member_b31c30f2-fafc-4551-b5c7-c5f91e48b800" xlink:href="aal-20211231.xsd#aal_EnhancedEquipmentTrustCertificates20211Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_8638a0bc-d418-49ce-90fa-a0ed1ec1c5b2" xlink:to="loc_aal_EnhancedEquipmentTrustCertificates20211Member_b31c30f2-fafc-4551-b5c7-c5f91e48b800" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtEETCsCertainInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtEETCsCertainInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtEETCsCertainInformationDetails" xlink:type="extended" id="i0623052c4ef74153a8d714d45131d0d3_DebtEETCsCertainInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_45ddf29d-4e1f-4bb6-b205-60bb848bb61d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_a9416cf1-422d-4d6f-8d89-88fc9fa6b3d2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_45ddf29d-4e1f-4bb6-b205-60bb848bb61d" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_a9416cf1-422d-4d6f-8d89-88fc9fa6b3d2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentEscrowedProceeds_0e5c728b-6c2c-4553-b49e-a995b5e160b4" xlink:href="aal-20211231.xsd#aal_DebtInstrumentEscrowedProceeds"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_45ddf29d-4e1f-4bb6-b205-60bb848bb61d" xlink:to="loc_aal_DebtInstrumentEscrowedProceeds_0e5c728b-6c2c-4553-b49e-a995b5e160b4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_0e309772-0bdd-420d-99a9-55110b301ae6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_45ddf29d-4e1f-4bb6-b205-60bb848bb61d" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_0e309772-0bdd-420d-99a9-55110b301ae6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_da4f45a1-abda-431f-ba96-69bcace2cec5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_45ddf29d-4e1f-4bb6-b205-60bb848bb61d" xlink:to="loc_us-gaap_DebtInstrumentTable_da4f45a1-abda-431f-ba96-69bcace2cec5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_bed43d4d-1601-45cc-841e-792321d2f3d1" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_da4f45a1-abda-431f-ba96-69bcace2cec5" xlink:to="loc_dei_LegalEntityAxis_bed43d4d-1601-45cc-841e-792321d2f3d1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bed43d4d-1601-45cc-841e-792321d2f3d1_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_bed43d4d-1601-45cc-841e-792321d2f3d1" xlink:to="loc_dei_EntityDomain_bed43d4d-1601-45cc-841e-792321d2f3d1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_295b25d6-f210-4060-aeb8-3562dcd79807" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_bed43d4d-1601-45cc-841e-792321d2f3d1" xlink:to="loc_dei_EntityDomain_295b25d6-f210-4060-aeb8-3562dcd79807" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_2877cca2-f2e1-4213-92eb-6cfbcec39ef2" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_295b25d6-f210-4060-aeb8-3562dcd79807" xlink:to="loc_aal_AmericanAirlinesIncMember_2877cca2-f2e1-4213-92eb-6cfbcec39ef2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_6a881ba2-89d1-4c02-9ccf-1bce082ed92a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_da4f45a1-abda-431f-ba96-69bcace2cec5" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_6a881ba2-89d1-4c02-9ccf-1bce082ed92a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_6a881ba2-89d1-4c02-9ccf-1bce082ed92a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_6a881ba2-89d1-4c02-9ccf-1bce082ed92a" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_6a881ba2-89d1-4c02-9ccf-1bce082ed92a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_872ad607-a66d-4acd-b5da-9d45b5cd0330" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_6a881ba2-89d1-4c02-9ccf-1bce082ed92a" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_872ad607-a66d-4acd-b5da-9d45b5cd0330" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnhancedEquipmentTrustCertificateMember_e453cd80-68b2-4ad6-bcea-9f8e1afaf92c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EnhancedEquipmentTrustCertificateMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_872ad607-a66d-4acd-b5da-9d45b5cd0330" xlink:to="loc_us-gaap_EnhancedEquipmentTrustCertificateMember_e453cd80-68b2-4ad6-bcea-9f8e1afaf92c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_4823a7b4-a89b-41ae-b8d1-4fe42e8e08ea" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_da4f45a1-abda-431f-ba96-69bcace2cec5" xlink:to="loc_us-gaap_DebtInstrumentAxis_4823a7b4-a89b-41ae-b8d1-4fe42e8e08ea" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_4823a7b4-a89b-41ae-b8d1-4fe42e8e08ea_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_4823a7b4-a89b-41ae-b8d1-4fe42e8e08ea" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_4823a7b4-a89b-41ae-b8d1-4fe42e8e08ea_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_60633e54-cc8f-4fe0-8e78-e3c331f77733" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_4823a7b4-a89b-41ae-b8d1-4fe42e8e08ea" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_60633e54-cc8f-4fe0-8e78-e3c331f77733" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A20211EETCSeriesAMember_f61a7311-b2e4-4b85-b817-26038d5e7538" xlink:href="aal-20211231.xsd#aal_A20211EETCSeriesAMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_60633e54-cc8f-4fe0-8e78-e3c331f77733" xlink:to="loc_aal_A20211EETCSeriesAMember_f61a7311-b2e4-4b85-b817-26038d5e7538" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A20211EETCSeriesBMember_f92e988b-2868-4369-bb02-c7634ab93990" xlink:href="aal-20211231.xsd#aal_A20211EETCSeriesBMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_60633e54-cc8f-4fe0-8e78-e3c331f77733" xlink:to="loc_aal_A20211EETCSeriesBMember_f92e988b-2868-4369-bb02-c7634ab93990" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtSpecialFacilityRevenueBondsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtSpecialFacilityRevenueBondsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtSpecialFacilityRevenueBondsDetails" xlink:type="extended" id="ied9afe2f2126419db47a3d1ec1194576_DebtSpecialFacilityRevenueBondsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_77e92cdd-bd7a-4c46-be6f-b6bb317f2bc6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ConstructionProjectExpectedCost_f96e463e-6378-4d03-a545-ccacbf1d5654" xlink:href="aal-20211231.xsd#aal_ConstructionProjectExpectedCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_77e92cdd-bd7a-4c46-be6f-b6bb317f2bc6" xlink:to="loc_aal_ConstructionProjectExpectedCost_f96e463e-6378-4d03-a545-ccacbf1d5654" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ConstructionProjectExpectedCostFundedBySpecialFacilityRevenueBond_c42eff0e-d7de-4680-b948-e2ebdcbf678a" xlink:href="aal-20211231.xsd#aal_ConstructionProjectExpectedCostFundedBySpecialFacilityRevenueBond"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_77e92cdd-bd7a-4c46-be6f-b6bb317f2bc6" xlink:to="loc_aal_ConstructionProjectExpectedCostFundedBySpecialFacilityRevenueBond_c42eff0e-d7de-4680-b948-e2ebdcbf678a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_3ea00b07-5b9d-4db4-975f-f28edc6db355" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_77e92cdd-bd7a-4c46-be6f-b6bb317f2bc6" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_3ea00b07-5b9d-4db4-975f-f28edc6db355" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_8d7541dd-18a1-4ddd-8294-415c86fcdf33" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_77e92cdd-bd7a-4c46-be6f-b6bb317f2bc6" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_8d7541dd-18a1-4ddd-8294-415c86fcdf33" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_2f84d7f2-6935-4b8e-bf3e-bfb9d18515de" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_77e92cdd-bd7a-4c46-be6f-b6bb317f2bc6" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_2f84d7f2-6935-4b8e-bf3e-bfb9d18515de" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_42582289-0a3f-40c7-9138-8db0aea08428" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_77e92cdd-bd7a-4c46-be6f-b6bb317f2bc6" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_42582289-0a3f-40c7-9138-8db0aea08428" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_657a4652-327e-455b-a238-170597ce8e61" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_77e92cdd-bd7a-4c46-be6f-b6bb317f2bc6" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_657a4652-327e-455b-a238-170597ce8e61" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_9000fad4-7982-4b61-8d9f-20582705a7bd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_77e92cdd-bd7a-4c46-be6f-b6bb317f2bc6" xlink:to="loc_us-gaap_DebtInstrumentTable_9000fad4-7982-4b61-8d9f-20582705a7bd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e27b4841-9367-4326-a87b-7b45b94f8cbc" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9000fad4-7982-4b61-8d9f-20582705a7bd" xlink:to="loc_dei_LegalEntityAxis_e27b4841-9367-4326-a87b-7b45b94f8cbc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e27b4841-9367-4326-a87b-7b45b94f8cbc_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e27b4841-9367-4326-a87b-7b45b94f8cbc" xlink:to="loc_dei_EntityDomain_e27b4841-9367-4326-a87b-7b45b94f8cbc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_61a68f80-e992-4679-b36f-1ae0fcfa8968" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e27b4841-9367-4326-a87b-7b45b94f8cbc" xlink:to="loc_dei_EntityDomain_61a68f80-e992-4679-b36f-1ae0fcfa8968" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_b8eee586-0b92-424e-93b5-d79ac375acf1" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_61a68f80-e992-4679-b36f-1ae0fcfa8968" xlink:to="loc_aal_AmericanAirlinesIncMember_b8eee586-0b92-424e-93b5-d79ac375acf1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_9a54c17e-0588-44be-b87e-a860302e8a95" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9000fad4-7982-4b61-8d9f-20582705a7bd" xlink:to="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_9a54c17e-0588-44be-b87e-a860302e8a95" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectMember_9a54c17e-0588-44be-b87e-a860302e8a95_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProjectMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_9a54c17e-0588-44be-b87e-a860302e8a95" xlink:to="loc_us-gaap_ProjectMember_9a54c17e-0588-44be-b87e-a860302e8a95_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectMember_f5452539-d169-40cc-adaf-72d4a8dc1f0b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProjectMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_9a54c17e-0588-44be-b87e-a860302e8a95" xlink:to="loc_us-gaap_ProjectMember_f5452539-d169-40cc-adaf-72d4a8dc1f0b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_JFKAirportUpgradeMember_6778d14d-1dad-4975-8f60-82763f979344" xlink:href="aal-20211231.xsd#aal_JFKAirportUpgradeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_f5452539-d169-40cc-adaf-72d4a8dc1f0b" xlink:to="loc_aal_JFKAirportUpgradeMember_6778d14d-1dad-4975-8f60-82763f979344" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_6dd42d12-2726-4e35-9d0d-98522b47ecea" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9000fad4-7982-4b61-8d9f-20582705a7bd" xlink:to="loc_us-gaap_DebtInstrumentAxis_6dd42d12-2726-4e35-9d0d-98522b47ecea" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_6dd42d12-2726-4e35-9d0d-98522b47ecea_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_6dd42d12-2726-4e35-9d0d-98522b47ecea" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_6dd42d12-2726-4e35-9d0d-98522b47ecea_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_d5ff8e72-74f9-446d-b1a7-bd613969b873" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_6dd42d12-2726-4e35-9d0d-98522b47ecea" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_d5ff8e72-74f9-446d-b1a7-bd613969b873" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A2020JFKBondsAnd2021JFKBondsMember_7b292ade-e5a9-46c3-ae50-af9db670c30c" xlink:href="aal-20211231.xsd#aal_A2020JFKBondsAnd2021JFKBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d5ff8e72-74f9-446d-b1a7-bd613969b873" xlink:to="loc_aal_A2020JFKBondsAnd2021JFKBondsMember_7b292ade-e5a9-46c3-ae50-af9db670c30c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A2020JFKBondsMember_e964774d-8108-4ce1-bf8b-1ea21f8e5bbd" xlink:href="aal-20211231.xsd#aal_A2020JFKBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_A2020JFKBondsAnd2021JFKBondsMember_7b292ade-e5a9-46c3-ae50-af9db670c30c" xlink:to="loc_aal_A2020JFKBondsMember_e964774d-8108-4ce1-bf8b-1ea21f8e5bbd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A2021JFKBondsMember_3d3e21c3-56c2-47c7-8e5f-0f18e03dd894" xlink:href="aal-20211231.xsd#aal_A2021JFKBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_A2020JFKBondsAnd2021JFKBondsMember_7b292ade-e5a9-46c3-ae50-af9db670c30c" xlink:to="loc_aal_A2021JFKBondsMember_3d3e21c3-56c2-47c7-8e5f-0f18e03dd894" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A2021JFKBonds225Matures2026Member_97101b05-a5fd-4955-a154-1930ff2556d3" xlink:href="aal-20211231.xsd#aal_A2021JFKBonds225Matures2026Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_A2021JFKBondsMember_3d3e21c3-56c2-47c7-8e5f-0f18e03dd894" xlink:to="loc_aal_A2021JFKBonds225Matures2026Member_97101b05-a5fd-4955-a154-1930ff2556d3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A2021JFKBonds300Matures2031Member_a1ebefde-3644-40e5-acf1-41b0fa5dae28" xlink:href="aal-20211231.xsd#aal_A2021JFKBonds300Matures2031Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_A2021JFKBondsMember_3d3e21c3-56c2-47c7-8e5f-0f18e03dd894" xlink:to="loc_aal_A2021JFKBonds300Matures2031Member_a1ebefde-3644-40e5-acf1-41b0fa5dae28" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A2016JFKBondsAnd2020JFKBondsMember_b7c80312-8bbc-4b32-9a6c-d2edec9887dd" xlink:href="aal-20211231.xsd#aal_A2016JFKBondsAnd2020JFKBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_d5ff8e72-74f9-446d-b1a7-bd613969b873" xlink:to="loc_aal_A2016JFKBondsAnd2020JFKBondsMember_b7c80312-8bbc-4b32-9a6c-d2edec9887dd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_c259b785-ce83-4634-949b-88e8b1093165" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9000fad4-7982-4b61-8d9f-20582705a7bd" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_c259b785-ce83-4634-949b-88e8b1093165" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_c259b785-ce83-4634-949b-88e8b1093165_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_c259b785-ce83-4634-949b-88e8b1093165" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_c259b785-ce83-4634-949b-88e8b1093165_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_73acab6f-1c75-4135-a9f1-2ab493c70425" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_c259b785-ce83-4634-949b-88e8b1093165" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_73acab6f-1c75-4135-a9f1-2ab493c70425" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_2b2d23fc-52fe-400a-87bf-c7f099558e75" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_73acab6f-1c75-4135-a9f1-2ab493c70425" xlink:to="loc_us-gaap_SecuredDebtMember_2b2d23fc-52fe-400a-87bf-c7f099558e75" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_0e05f84e-c665-4bdd-973b-03cf8ddab2a2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_9000fad4-7982-4b61-8d9f-20582705a7bd" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_0e05f84e-c665-4bdd-973b-03cf8ddab2a2" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_0e05f84e-c665-4bdd-973b-03cf8ddab2a2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_0e05f84e-c665-4bdd-973b-03cf8ddab2a2" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_0e05f84e-c665-4bdd-973b-03cf8ddab2a2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_7245bc86-cbd2-434a-b27a-252b34324545" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BalanceSheetLocationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_0e05f84e-c665-4bdd-973b-03cf8ddab2a2" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_7245bc86-cbd2-434a-b27a-252b34324545" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RestrictedCashAndInvestmentsCurrentMember_9c4c7542-14e8-4965-9e78-ff156a920c81" xlink:href="aal-20211231.xsd#aal_RestrictedCashAndInvestmentsCurrentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_7245bc86-cbd2-434a-b27a-252b34324545" xlink:to="loc_aal_RestrictedCashAndInvestmentsCurrentMember_9c4c7542-14e8-4965-9e78-ff156a920c81" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtPSPPromissoryNoteDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtPSPPromissoryNoteDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtPSPPromissoryNoteDetails" xlink:type="extended" id="i8b7652176e38450aaaae28037470ddd1_DebtPSPPromissoryNoteDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_9d105499-77b2-41eb-b664-f464ec807f41" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_b1be7ceb-656f-47cb-838d-e80e1e81065b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_9d105499-77b2-41eb-b664-f464ec807f41" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_b1be7ceb-656f-47cb-838d-e80e1e81065b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3079bc29-fb25-40b5-b5a2-2d9e2b1c6772" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_9d105499-77b2-41eb-b664-f464ec807f41" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3079bc29-fb25-40b5-b5a2-2d9e2b1c6772" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_dbd8010c-e329-4b27-b23c-d47e934ca4d9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_9d105499-77b2-41eb-b664-f464ec807f41" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_dbd8010c-e329-4b27-b23c-d47e934ca4d9" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentBasisSpreadOnVariableRateFloorInterestRate_f1511581-5ab1-4bdf-9fc6-029567518466" xlink:href="aal-20211231.xsd#aal_DebtInstrumentBasisSpreadOnVariableRateFloorInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_9d105499-77b2-41eb-b664-f464ec807f41" xlink:to="loc_aal_DebtInstrumentBasisSpreadOnVariableRateFloorInterestRate_f1511581-5ab1-4bdf-9fc6-029567518466" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentPrepaymentTriggerNumberOfDaysWithinTheOccurrenceOfTriggeringEvent_e8a2ae7a-dd29-49ad-afd1-9ce9ac2fb856" xlink:href="aal-20211231.xsd#aal_DebtInstrumentPrepaymentTriggerNumberOfDaysWithinTheOccurrenceOfTriggeringEvent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_9d105499-77b2-41eb-b664-f464ec807f41" xlink:to="loc_aal_DebtInstrumentPrepaymentTriggerNumberOfDaysWithinTheOccurrenceOfTriggeringEvent_e8a2ae7a-dd29-49ad-afd1-9ce9ac2fb856" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_50f905dc-ec40-49d7-8db3-56b4287ea7ba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_9d105499-77b2-41eb-b664-f464ec807f41" xlink:to="loc_us-gaap_DebtInstrumentTable_50f905dc-ec40-49d7-8db3-56b4287ea7ba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_8ef19c19-8ca5-455b-8ebd-7825159f0aa6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_50f905dc-ec40-49d7-8db3-56b4287ea7ba" xlink:to="loc_us-gaap_DebtInstrumentAxis_8ef19c19-8ca5-455b-8ebd-7825159f0aa6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_8ef19c19-8ca5-455b-8ebd-7825159f0aa6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_8ef19c19-8ca5-455b-8ebd-7825159f0aa6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_8ef19c19-8ca5-455b-8ebd-7825159f0aa6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ba29dbf0-94ca-4d84-9155-ba8d0549e026" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_8ef19c19-8ca5-455b-8ebd-7825159f0aa6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ba29dbf0-94ca-4d84-9155-ba8d0549e026" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_c8a1e13f-69d8-4bdb-af0e-3188eba3fdea" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteOneCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ba29dbf0-94ca-4d84-9155-ba8d0549e026" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_c8a1e13f-69d8-4bdb-af0e-3188eba3fdea" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember_e3a83ee2-7749-401b-a460-0f710036dcb8" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ba29dbf0-94ca-4d84-9155-ba8d0549e026" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember_e3a83ee2-7749-401b-a460-0f710036dcb8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember_d9255081-ac19-42d1-a7eb-cc4c4b89428c" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ba29dbf0-94ca-4d84-9155-ba8d0549e026" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember_d9255081-ac19-42d1-a7eb-cc4c4b89428c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InterestRateScenarioAxis_d025a5cf-382a-4863-b139-5f8cf91a90e1" xlink:href="aal-20211231.xsd#aal_InterestRateScenarioAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_50f905dc-ec40-49d7-8db3-56b4287ea7ba" xlink:to="loc_aal_InterestRateScenarioAxis_d025a5cf-382a-4863-b139-5f8cf91a90e1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InterestRateScenarioDomain_d025a5cf-382a-4863-b139-5f8cf91a90e1_default" xlink:href="aal-20211231.xsd#aal_InterestRateScenarioDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_aal_InterestRateScenarioAxis_d025a5cf-382a-4863-b139-5f8cf91a90e1" xlink:to="loc_aal_InterestRateScenarioDomain_d025a5cf-382a-4863-b139-5f8cf91a90e1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InterestRateScenarioDomain_d714bc84-dce1-4272-ac07-64f4e9b705b7" xlink:href="aal-20211231.xsd#aal_InterestRateScenarioDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_aal_InterestRateScenarioAxis_d025a5cf-382a-4863-b139-5f8cf91a90e1" xlink:to="loc_aal_InterestRateScenarioDomain_d714bc84-dce1-4272-ac07-64f4e9b705b7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InterestRateFirstFiveYearsMember_b0f733fe-cf62-42a9-bcb3-3dc479793b5f" xlink:href="aal-20211231.xsd#aal_InterestRateFirstFiveYearsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_InterestRateScenarioDomain_d714bc84-dce1-4272-ac07-64f4e9b705b7" xlink:to="loc_aal_InterestRateFirstFiveYearsMember_b0f733fe-cf62-42a9-bcb3-3dc479793b5f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InterestRateYearsSixThroughTenMember_ed4e956d-7d39-44ad-9a8b-2fdbef1f1377" xlink:href="aal-20211231.xsd#aal_InterestRateYearsSixThroughTenMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_InterestRateScenarioDomain_d714bc84-dce1-4272-ac07-64f4e9b705b7" xlink:to="loc_aal_InterestRateYearsSixThroughTenMember_ed4e956d-7d39-44ad-9a8b-2fdbef1f1377" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_0f479dd0-6d68-4a5e-adbd-ff042f17cd2a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_50f905dc-ec40-49d7-8db3-56b4287ea7ba" xlink:to="loc_us-gaap_VariableRateAxis_0f479dd0-6d68-4a5e-adbd-ff042f17cd2a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_0f479dd0-6d68-4a5e-adbd-ff042f17cd2a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_0f479dd0-6d68-4a5e-adbd-ff042f17cd2a" xlink:to="loc_us-gaap_VariableRateDomain_0f479dd0-6d68-4a5e-adbd-ff042f17cd2a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_963a0236-897d-4b42-b91e-e0e7553c3dc1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableRateDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_0f479dd0-6d68-4a5e-adbd-ff042f17cd2a" xlink:to="loc_us-gaap_VariableRateDomain_963a0236-897d-4b42-b91e-e0e7553c3dc1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SecuredOvernightFinancingRateOrOtherMember_0fb2cd8b-b135-4736-9ae3-e2f734d6be0c" xlink:href="aal-20211231.xsd#aal_SecuredOvernightFinancingRateOrOtherMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_963a0236-897d-4b42-b91e-e0e7553c3dc1" xlink:to="loc_aal_SecuredOvernightFinancingRateOrOtherMember_0fb2cd8b-b135-4736-9ae3-e2f734d6be0c" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/Debt650ConvertibleSeniorNotesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#Debt650ConvertibleSeniorNotesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/Debt650ConvertibleSeniorNotesDetails" xlink:type="extended" id="i84af95e496324c349e2b7e78bee02b4c_Debt650ConvertibleSeniorNotesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_ca0a0f80-90ce-4c8f-ab36-185ce8a6cc89" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_ca0a0f80-90ce-4c8f-ab36-185ce8a6cc89" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_2c21c498-7db5-4d6f-b41e-fc77ba4d000e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_2c21c498-7db5-4d6f-b41e-fc77ba4d000e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_c6cc7163-bfc0-4bb3-900b-6dfa5dcf5ec5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_c6cc7163-bfc0-4bb3-900b-6dfa5dcf5ec5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LongTermDebtPricePercentageOfParValue_4b36a334-c002-4910-ac62-da6ca1e758f7" xlink:href="aal-20211231.xsd#aal_LongTermDebtPricePercentageOfParValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_aal_LongTermDebtPricePercentageOfParValue_4b36a334-c002-4910-ac62-da6ca1e758f7" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_5c6532a6-76a7-496a-ba2d-15e7b1f38326" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentConvertibleConversionRatio1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionRatio1_5c6532a6-76a7-496a-ba2d-15e7b1f38326" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_c8a261b8-962f-4fe3-970a-514672d2414f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_c8a261b8-962f-4fe3-970a-514672d2414f" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ConvertibleDebtConversionTermsPercentageOfSalesPriceExceedingConversionPrice_19faf2fb-2bb0-470e-aee9-a892e63d29d1" xlink:href="aal-20211231.xsd#aal_ConvertibleDebtConversionTermsPercentageOfSalesPriceExceedingConversionPrice"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_aal_ConvertibleDebtConversionTermsPercentageOfSalesPriceExceedingConversionPrice_19faf2fb-2bb0-470e-aee9-a892e63d29d1" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdTradingDays_32bac677-5fe1-42a4-9af0-a6fb051047f6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentConvertibleThresholdTradingDays"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdTradingDays_32bac677-5fe1-42a4-9af0-a6fb051047f6" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_2033fdb6-0bc2-4971-8723-ba0d9c7190d5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1_2033fdb6-0bc2-4971-8723-ba0d9c7190d5" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ConvertibleDebtConversionTermsMeasurementPeriodTradingPriceThresholdPercentage_e949254d-cbf4-4c47-a9af-c7a520eef7aa" xlink:href="aal-20211231.xsd#aal_ConvertibleDebtConversionTermsMeasurementPeriodTradingPriceThresholdPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_aal_ConvertibleDebtConversionTermsMeasurementPeriodTradingPriceThresholdPercentage_e949254d-cbf4-4c47-a9af-c7a520eef7aa" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_bf043585-41d9-4ea4-b94a-cc762e2a6db1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_bf043585-41d9-4ea4-b94a-cc762e2a6db1" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentPercentOfHoldersCanDeclareDebtDueAndPayable_11e942be-90fe-47bb-acf8-46693f78e0e4" xlink:href="aal-20211231.xsd#aal_DebtInstrumentPercentOfHoldersCanDeclareDebtDueAndPayable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_aal_DebtInstrumentPercentOfHoldersCanDeclareDebtDueAndPayable_11e942be-90fe-47bb-acf8-46693f78e0e4" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_1b074fcc-9ea6-4d6a-adbe-27f01efc051b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_1b074fcc-9ea6-4d6a-adbe-27f01efc051b" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_700a4e72-8375-480b-ab6d-e5b789fde8a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_700a4e72-8375-480b-ab6d-e5b789fde8a8" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_5356256b-365f-436d-bdf2-e8b6639b2861" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_InterestExpense_5356256b-365f-436d-bdf2-e8b6639b2861" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfDebtDiscountPremium_59d107e0-a849-405d-a96a-8441dcbdcbc7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_AmortizationOfDebtDiscountPremium_59d107e0-a849-405d-a96a-8441dcbdcbc7" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseDebt_f0b62035-5ff0-466a-b104-ff9a73a2190c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpenseDebt"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_InterestExpenseDebt_f0b62035-5ff0-466a-b104-ff9a73a2190c" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal_8a88bf54-0469-407e-ba3e-3cba2d9fb7b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal_8a88bf54-0469-407e-ba3e-3cba2d9fb7b5" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_ae8c384c-2066-4e1a-a7b3-afb00021ccde" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_be89ff43-7f7d-4b5f-b47c-691979607e61" xlink:to="loc_us-gaap_DebtInstrumentTable_ae8c384c-2066-4e1a-a7b3-afb00021ccde" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_e4e7d700-3766-46b8-8445-3511ddbb7199" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ae8c384c-2066-4e1a-a7b3-afb00021ccde" xlink:to="loc_us-gaap_DebtInstrumentAxis_e4e7d700-3766-46b8-8445-3511ddbb7199" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_e4e7d700-3766-46b8-8445-3511ddbb7199_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_e4e7d700-3766-46b8-8445-3511ddbb7199" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_e4e7d700-3766-46b8-8445-3511ddbb7199_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_e92de18a-a3ad-41cc-9a1a-a1e3fa1ad4f4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_e4e7d700-3766-46b8-8445-3511ddbb7199" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_e92de18a-a3ad-41cc-9a1a-a1e3fa1ad4f4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes6.50Due2025Member_00ff6d01-e078-48d3-8603-0481e514b4e6" xlink:href="aal-20211231.xsd#aal_SeniorNotes6.50Due2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_e92de18a-a3ad-41cc-9a1a-a1e3fa1ad4f4" xlink:to="loc_aal_SeniorNotes6.50Due2025Member_00ff6d01-e078-48d3-8603-0481e514b4e6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_2a80e85d-f2da-473e-9d9f-507141c07d57" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ae8c384c-2066-4e1a-a7b3-afb00021ccde" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_2a80e85d-f2da-473e-9d9f-507141c07d57" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2a80e85d-f2da-473e-9d9f-507141c07d57_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2a80e85d-f2da-473e-9d9f-507141c07d57" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2a80e85d-f2da-473e-9d9f-507141c07d57_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ae72d702-a95f-45b5-bc04-f91bcb1ea33c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2a80e85d-f2da-473e-9d9f-507141c07d57" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ae72d702-a95f-45b5-bc04-f91bcb1ea33c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_f167ece7-2da9-48ab-b5e8-15cac8568711" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_ae72d702-a95f-45b5-bc04-f91bcb1ea33c" xlink:to="loc_us-gaap_SeniorNotesMember_f167ece7-2da9-48ab-b5e8-15cac8568711" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_63eeeeed-e4a3-4ba4-becb-48f5cff8bec4" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ae8c384c-2066-4e1a-a7b3-afb00021ccde" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_63eeeeed-e4a3-4ba4-becb-48f5cff8bec4" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_63eeeeed-e4a3-4ba4-becb-48f5cff8bec4_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_63eeeeed-e4a3-4ba4-becb-48f5cff8bec4" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_63eeeeed-e4a3-4ba4-becb-48f5cff8bec4_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_74e455c7-9f2a-4ddf-bff7-41b402d21553" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionAxis_63eeeeed-e4a3-4ba4-becb-48f5cff8bec4" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_74e455c7-9f2a-4ddf-bff7-41b402d21553" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_8db24da7-d0ac-4999-98de-1b9bce42b6c5" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_CumulativeEffectPeriodOfAdoptionDomain_74e455c7-9f2a-4ddf-bff7-41b402d21553" xlink:to="loc_srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_8db24da7-d0ac-4999-98de-1b9bce42b6c5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtConversionScenarioAxis_328b665b-6b56-444c-8eb6-7dde0da18837" xlink:href="aal-20211231.xsd#aal_DebtConversionScenarioAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_ae8c384c-2066-4e1a-a7b3-afb00021ccde" xlink:to="loc_aal_DebtConversionScenarioAxis_328b665b-6b56-444c-8eb6-7dde0da18837" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtConversionScenarioDomain_328b665b-6b56-444c-8eb6-7dde0da18837_default" xlink:href="aal-20211231.xsd#aal_DebtConversionScenarioDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_aal_DebtConversionScenarioAxis_328b665b-6b56-444c-8eb6-7dde0da18837" xlink:to="loc_aal_DebtConversionScenarioDomain_328b665b-6b56-444c-8eb6-7dde0da18837_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtConversionScenarioDomain_ba9824e6-f834-4662-b317-85b40c5b1b95" xlink:href="aal-20211231.xsd#aal_DebtConversionScenarioDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_aal_DebtConversionScenarioAxis_328b665b-6b56-444c-8eb6-7dde0da18837" xlink:to="loc_aal_DebtConversionScenarioDomain_ba9824e6-f834-4662-b317-85b40c5b1b95" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtConversionScenarioOneMember_6cdeae1d-90db-41ac-89f8-136a87e04b18" xlink:href="aal-20211231.xsd#aal_DebtConversionScenarioOneMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_DebtConversionScenarioDomain_ba9824e6-f834-4662-b317-85b40c5b1b95" xlink:to="loc_aal_DebtConversionScenarioOneMember_6cdeae1d-90db-41ac-89f8-136a87e04b18" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtConversionScenarioTwoMember_67383021-8ab1-4080-a471-c62d147e8a02" xlink:href="aal-20211231.xsd#aal_DebtConversionScenarioTwoMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_DebtConversionScenarioDomain_ba9824e6-f834-4662-b317-85b40c5b1b95" xlink:to="loc_aal_DebtConversionScenarioTwoMember_67383021-8ab1-4080-a471-c62d147e8a02" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtUnsecuredSeniorNotesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtUnsecuredSeniorNotesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtUnsecuredSeniorNotesDetails" xlink:type="extended" id="i603c0c84209542f2a5ee3e2de0c026ff_DebtUnsecuredSeniorNotesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_72d8ab2a-ee91-45cf-887a-efa01711004e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_0cb90efd-64ce-453d-9036-8c5fcf484140" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72d8ab2a-ee91-45cf-887a-efa01711004e" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_0cb90efd-64ce-453d-9036-8c5fcf484140" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_2e694f72-a36e-47f6-903e-aa7bfb4a21f5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentFaceAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72d8ab2a-ee91-45cf-887a-efa01711004e" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_2e694f72-a36e-47f6-903e-aa7bfb4a21f5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_e3b81aac-6b93-451b-81a8-f6f7dbac1453" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72d8ab2a-ee91-45cf-887a-efa01711004e" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_e3b81aac-6b93-451b-81a8-f6f7dbac1453" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_c1f872fd-facc-43b4-83a3-c00153bd50a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_72d8ab2a-ee91-45cf-887a-efa01711004e" xlink:to="loc_us-gaap_DebtInstrumentTable_c1f872fd-facc-43b4-83a3-c00153bd50a8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_2fbb57a3-0a76-4849-9b52-c3e7d70c53fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_c1f872fd-facc-43b4-83a3-c00153bd50a8" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_2fbb57a3-0a76-4849-9b52-c3e7d70c53fd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_2fbb57a3-0a76-4849-9b52-c3e7d70c53fd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2fbb57a3-0a76-4849-9b52-c3e7d70c53fd" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_2fbb57a3-0a76-4849-9b52-c3e7d70c53fd_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_d8e61a34-8e12-44b9-bb2f-1e6d860fa91d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_2fbb57a3-0a76-4849-9b52-c3e7d70c53fd" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_d8e61a34-8e12-44b9-bb2f-1e6d860fa91d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_f5cbdb11-548a-44c6-9225-9ea7c6bf9a72" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_d8e61a34-8e12-44b9-bb2f-1e6d860fa91d" xlink:to="loc_us-gaap_UnsecuredDebtMember_f5cbdb11-548a-44c6-9225-9ea7c6bf9a72" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_5d5eaba6-11a4-49be-9515-8b06a7d47de0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_c1f872fd-facc-43b4-83a3-c00153bd50a8" xlink:to="loc_us-gaap_DebtInstrumentAxis_5d5eaba6-11a4-49be-9515-8b06a7d47de0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5d5eaba6-11a4-49be-9515-8b06a7d47de0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_5d5eaba6-11a4-49be-9515-8b06a7d47de0" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5d5eaba6-11a4-49be-9515-8b06a7d47de0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_ca573a18-2ec6-4cf4-bd2e-c2c89ddeb9fc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_5d5eaba6-11a4-49be-9515-8b06a7d47de0" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_ca573a18-2ec6-4cf4-bd2e-c2c89ddeb9fc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_573b5606-ba89-4c9e-b632-0980a83bd064" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SeniorNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_ca573a18-2ec6-4cf4-bd2e-c2c89ddeb9fc" xlink:to="loc_us-gaap_SeniorNotesMember_573b5606-ba89-4c9e-b632-0980a83bd064" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes5.000Due2022Member_d8464a57-1bb6-42ca-b1cb-5527b88d8e8a" xlink:href="aal-20211231.xsd#aal_SeniorNotes5.000Due2022Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SeniorNotesMember_573b5606-ba89-4c9e-b632-0980a83bd064" xlink:to="loc_aal_SeniorNotes5.000Due2022Member_d8464a57-1bb6-42ca-b1cb-5527b88d8e8a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote375Matures2025Member_6a8f432b-6ea3-4f25-af3f-583317ff1f84" xlink:href="aal-20211231.xsd#aal_SeniorNote375Matures2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SeniorNotesMember_573b5606-ba89-4c9e-b632-0980a83bd064" xlink:to="loc_aal_SeniorNote375Matures2025Member_6a8f432b-6ea3-4f25-af3f-583317ff1f84" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtGuaranteesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtGuaranteesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtGuaranteesDetails" xlink:type="extended" id="i28ca80f0d6154931b9dcde8c0d060858_DebtGuaranteesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_b0a5d8fc-c22a-4158-b51e-d9f8e8d50489" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_678c475a-a33c-49e5-9a10-af2e135d94c1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GuaranteeObligationsMaximumExposure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b0a5d8fc-c22a-4158-b51e-d9f8e8d50489" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_678c475a-a33c-49e5-9a10-af2e135d94c1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_62bb7a97-80ee-4967-bb72-a04de09177ae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b0a5d8fc-c22a-4158-b51e-d9f8e8d50489" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_62bb7a97-80ee-4967-bb72-a04de09177ae" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_1487270a-3498-446a-8d3c-350e62d2a74a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b0a5d8fc-c22a-4158-b51e-d9f8e8d50489" xlink:to="loc_us-gaap_DebtInstrumentTable_1487270a-3498-446a-8d3c-350e62d2a74a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8259f359-20ec-4aff-88cb-0dcaf9d8e539" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1487270a-3498-446a-8d3c-350e62d2a74a" xlink:to="loc_dei_LegalEntityAxis_8259f359-20ec-4aff-88cb-0dcaf9d8e539" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8259f359-20ec-4aff-88cb-0dcaf9d8e539_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8259f359-20ec-4aff-88cb-0dcaf9d8e539" xlink:to="loc_dei_EntityDomain_8259f359-20ec-4aff-88cb-0dcaf9d8e539_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_395f8960-884f-4926-a78e-1df96e307955" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8259f359-20ec-4aff-88cb-0dcaf9d8e539" xlink:to="loc_dei_EntityDomain_395f8960-884f-4926-a78e-1df96e307955" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_9e7e6cb7-5a0b-4ced-8ffb-081b392c2ad1" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_395f8960-884f-4926-a78e-1df96e307955" xlink:to="loc_aal_AmericanAirlinesIncMember_9e7e6cb7-5a0b-4ced-8ffb-081b392c2ad1" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_ddf87729-1f06-486b-a129-5bbe84b1aec7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1487270a-3498-446a-8d3c-350e62d2a74a" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_ddf87729-1f06-486b-a129-5bbe84b1aec7" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_ddf87729-1f06-486b-a129-5bbe84b1aec7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_ddf87729-1f06-486b-a129-5bbe84b1aec7" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_ddf87729-1f06-486b-a129-5bbe84b1aec7_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_bf63ef4b-7b35-4fd5-8aa2-b0592764d3ba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_ddf87729-1f06-486b-a129-5bbe84b1aec7" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_bf63ef4b-7b35-4fd5-8aa2-b0592764d3ba" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_57528289-4fea-4484-a96c-9b590c870c02" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_bf63ef4b-7b35-4fd5-8aa2-b0592764d3ba" xlink:to="loc_us-gaap_SecuredDebtMember_57528289-4fea-4484-a96c-9b590c870c02" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_ad0ed6c7-e6e5-46d0-be8e-d257474c1f7c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_bf63ef4b-7b35-4fd5-8aa2-b0592764d3ba" xlink:to="loc_us-gaap_UnsecuredDebtMember_ad0ed6c7-e6e5-46d0-be8e-d257474c1f7c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_001c07c6-3670-4876-98b1-eb0d6a7e9003" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_1487270a-3498-446a-8d3c-350e62d2a74a" xlink:to="loc_us-gaap_DebtInstrumentAxis_001c07c6-3670-4876-98b1-eb0d6a7e9003" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_001c07c6-3670-4876-98b1-eb0d6a7e9003_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_001c07c6-3670-4876-98b1-eb0d6a7e9003" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_001c07c6-3670-4876-98b1-eb0d6a7e9003_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_2c77d7fd-2cbb-4edd-ad34-dfbbcef7ccc5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_001c07c6-3670-4876-98b1-eb0d6a7e9003" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_2c77d7fd-2cbb-4edd-ad34-dfbbcef7ccc5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SpecialFacilityRevenueBondsMember_61a20f90-1b10-403d-8f83-d5afb4ddb1f5" xlink:href="aal-20211231.xsd#aal_SpecialFacilityRevenueBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2c77d7fd-2cbb-4edd-ad34-dfbbcef7ccc5" xlink:to="loc_aal_SpecialFacilityRevenueBondsMember_61a20f90-1b10-403d-8f83-d5afb4ddb1f5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_c91f15c2-e0d2-4b42-ba6c-d07bff667089" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteOneCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2c77d7fd-2cbb-4edd-ad34-dfbbcef7ccc5" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_c91f15c2-e0d2-4b42-ba6c-d07bff667089" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember_fffab9c2-b4d8-478d-b1c5-84b9d865d41f" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2c77d7fd-2cbb-4edd-ad34-dfbbcef7ccc5" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteTwoCARESActMember_fffab9c2-b4d8-478d-b1c5-84b9d865d41f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember_7846090b-a18c-4b07-8da5-df15873b08e4" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2c77d7fd-2cbb-4edd-ad34-dfbbcef7ccc5" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteThreeCARESActMember_7846090b-a18c-4b07-8da5-df15873b08e4" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes6.50Due2025Member_d6c09bc0-d680-4b34-9e84-baf23d595783" xlink:href="aal-20211231.xsd#aal_SeniorNotes6.50Due2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2c77d7fd-2cbb-4edd-ad34-dfbbcef7ccc5" xlink:to="loc_aal_SeniorNotes6.50Due2025Member_d6c09bc0-d680-4b34-9e84-baf23d595783" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes5.000Due2022Member_8cc76aa2-8ac7-4b92-955e-7234ef5e6a17" xlink:href="aal-20211231.xsd#aal_SeniorNotes5.000Due2022Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2c77d7fd-2cbb-4edd-ad34-dfbbcef7ccc5" xlink:to="loc_aal_SeniorNotes5.000Due2022Member_8cc76aa2-8ac7-4b92-955e-7234ef5e6a17" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote375Matures2025Member_ada4db98-1b14-4803-b95f-58723c30b1d4" xlink:href="aal-20211231.xsd#aal_SeniorNote375Matures2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_2c77d7fd-2cbb-4edd-ad34-dfbbcef7ccc5" xlink:to="loc_aal_SeniorNote375Matures2025Member_ada4db98-1b14-4803-b95f-58723c30b1d4" xlink:type="arc" order="6"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/DebtCollateralRelatedCovenantsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#DebtCollateralRelatedCovenantsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/DebtCollateralRelatedCovenantsDetails" xlink:type="extended" id="id0a75223b0c3482992f3188c483804cb_DebtCollateralRelatedCovenantsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_739a601d-f1cc-40c1-870f-bfdb7e134d89" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LineOfCreditFacilityCovenantTermsMinimumAggregateLiquidityRequired_2a04478e-0693-4693-a3f7-1b8cb9199814" xlink:href="aal-20211231.xsd#aal_LineOfCreditFacilityCovenantTermsMinimumAggregateLiquidityRequired"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_739a601d-f1cc-40c1-870f-bfdb7e134d89" xlink:to="loc_aal_LineOfCreditFacilityCovenantTermsMinimumAggregateLiquidityRequired_2a04478e-0693-4693-a3f7-1b8cb9199814" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_ba6b242c-ba82-4b4a-8ed9-d33a67cac2a6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_739a601d-f1cc-40c1-870f-bfdb7e134d89" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_ba6b242c-ba82-4b4a-8ed9-d33a67cac2a6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentCollateralCovenantLoanToValueRatioMultiplier_7abc5728-0914-4015-9c67-03c031076972" xlink:href="aal-20211231.xsd#aal_DebtInstrumentCollateralCovenantLoanToValueRatioMultiplier"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_739a601d-f1cc-40c1-870f-bfdb7e134d89" xlink:to="loc_aal_DebtInstrumentCollateralCovenantLoanToValueRatioMultiplier_7abc5728-0914-4015-9c67-03c031076972" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DebtInstrumentCollateralCovenantMaximumLoanToValueRatio_3f90b617-19b1-4d74-a804-4dd48251409f" xlink:href="aal-20211231.xsd#aal_DebtInstrumentCollateralCovenantMaximumLoanToValueRatio"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_739a601d-f1cc-40c1-870f-bfdb7e134d89" xlink:to="loc_aal_DebtInstrumentCollateralCovenantMaximumLoanToValueRatio_3f90b617-19b1-4d74-a804-4dd48251409f" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LtvAsOfMeasurementDate_2d974f5a-79d0-4987-8ce3-b6104d134abe" xlink:href="aal-20211231.xsd#aal_LtvAsOfMeasurementDate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_739a601d-f1cc-40c1-870f-bfdb7e134d89" xlink:to="loc_aal_LtvAsOfMeasurementDate_2d974f5a-79d0-4987-8ce3-b6104d134abe" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_e778ccef-7481-467e-aa05-0cf9733692af" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_739a601d-f1cc-40c1-870f-bfdb7e134d89" xlink:to="loc_us-gaap_DebtInstrumentTable_e778ccef-7481-467e-aa05-0cf9733692af" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_985c928e-9656-41c9-aa36-7aedbf921c69" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e778ccef-7481-467e-aa05-0cf9733692af" xlink:to="loc_dei_LegalEntityAxis_985c928e-9656-41c9-aa36-7aedbf921c69" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_985c928e-9656-41c9-aa36-7aedbf921c69_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_985c928e-9656-41c9-aa36-7aedbf921c69" xlink:to="loc_dei_EntityDomain_985c928e-9656-41c9-aa36-7aedbf921c69_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7344a18b-8799-453e-9ea0-537a5ce1b892" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_985c928e-9656-41c9-aa36-7aedbf921c69" xlink:to="loc_dei_EntityDomain_7344a18b-8799-453e-9ea0-537a5ce1b892" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_fdac784e-a2c7-4c19-a136-ba73f471714a" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_7344a18b-8799-453e-9ea0-537a5ce1b892" xlink:to="loc_aal_AmericanAirlinesIncMember_fdac784e-a2c7-4c19-a136-ba73f471714a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_e43fd903-aa61-4430-9042-b10142289b91" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e778ccef-7481-467e-aa05-0cf9733692af" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_e43fd903-aa61-4430-9042-b10142289b91" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e43fd903-aa61-4430-9042-b10142289b91_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e43fd903-aa61-4430-9042-b10142289b91" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e43fd903-aa61-4430-9042-b10142289b91_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_33dc8e81-221e-4fa1-a88a-2ca4fac5cdb0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e43fd903-aa61-4430-9042-b10142289b91" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_33dc8e81-221e-4fa1-a88a-2ca4fac5cdb0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_d8fe4ca0-d20b-4e91-9e39-b2d053c56b4d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_33dc8e81-221e-4fa1-a88a-2ca4fac5cdb0" xlink:to="loc_us-gaap_SecuredDebtMember_d8fe4ca0-d20b-4e91-9e39-b2d053c56b4d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_d892189c-aa9b-4e9b-b7da-933dd5ed0384" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_e778ccef-7481-467e-aa05-0cf9733692af" xlink:to="loc_us-gaap_DebtInstrumentAxis_d892189c-aa9b-4e9b-b7da-933dd5ed0384" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_d892189c-aa9b-4e9b-b7da-933dd5ed0384_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_d892189c-aa9b-4e9b-b7da-933dd5ed0384" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_d892189c-aa9b-4e9b-b7da-933dd5ed0384_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_fcb2a5b3-f3f1-4866-a55d-9886af84d92c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_d892189c-aa9b-4e9b-b7da-933dd5ed0384" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_fcb2a5b3-f3f1-4866-a55d-9886af84d92c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2013Member_197f9b4f-30a6-4fd2-8ce5-224d1336e8f6" xlink:href="aal-20211231.xsd#aal_CreditFacility2013Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fcb2a5b3-f3f1-4866-a55d-9886af84d92c" xlink:to="loc_aal_CreditFacility2013Member_197f9b4f-30a6-4fd2-8ce5-224d1336e8f6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacility2014Member_38ff5b64-eb15-4d52-88ce-cc9b657b00f8" xlink:href="aal-20211231.xsd#aal_CreditFacility2014Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fcb2a5b3-f3f1-4866-a55d-9886af84d92c" xlink:to="loc_aal_CreditFacility2014Member_38ff5b64-eb15-4d52-88ce-cc9b657b00f8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CreditFacilityDecember2016Member_d9c79ab5-6f70-4ed5-80ef-463781a81831" xlink:href="aal-20211231.xsd#aal_CreditFacilityDecember2016Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fcb2a5b3-f3f1-4866-a55d-9886af84d92c" xlink:to="loc_aal_CreditFacilityDecember2016Member_d9c79ab5-6f70-4ed5-80ef-463781a81831" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A1075SeniorSecuredNotesMember_5c3479a5-4da4-426c-9f1c-9e52e78fb510" xlink:href="aal-20211231.xsd#aal_A1075SeniorSecuredNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fcb2a5b3-f3f1-4866-a55d-9886af84d92c" xlink:to="loc_aal_A1075SeniorSecuredNotesMember_5c3479a5-4da4-426c-9f1c-9e52e78fb510" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_A1175SeniorSecureNotesMember_4ab935b2-9c75-4ebc-8dae-6c916788f4c5" xlink:href="aal-20211231.xsd#aal_A1175SeniorSecureNotesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fcb2a5b3-f3f1-4866-a55d-9886af84d92c" xlink:to="loc_aal_A1175SeniorSecureNotesMember_4ab935b2-9c75-4ebc-8dae-6c916788f4c5" xlink:type="arc" order="4"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/Leases" xlink:type="simple" xlink:href="aal-20211231.xsd#Leases"/>
<link:definitionLink xlink:role="http://www.aa.com/role/Leases" xlink:type="extended" id="ic7aa9e3f0b294a6fbf71233a63700ca0_Leases">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_6d7f685c-2902-462b-a987-1225d8364388" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeFinanceLeasesTextBlock_8229c38d-7ba2-4610-a8b5-a8ffab7e5d4d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeFinanceLeasesTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6d7f685c-2902-462b-a987-1225d8364388" xlink:to="loc_us-gaap_LesseeFinanceLeasesTextBlock_8229c38d-7ba2-4610-a8b5-a8ffab7e5d4d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeasesTextBlock_62839036-a02d-4e99-b614-5008f6acc784" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeasesTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6d7f685c-2902-462b-a987-1225d8364388" xlink:to="loc_us-gaap_LesseeOperatingLeasesTextBlock_62839036-a02d-4e99-b614-5008f6acc784" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_bb41816e-9b62-4f95-9418-03977efcb320" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_6d7f685c-2902-462b-a987-1225d8364388" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_bb41816e-9b62-4f95-9418-03977efcb320" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9884fa2b-d0c0-489e-b943-6082e4f8fd9c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_bb41816e-9b62-4f95-9418-03977efcb320" xlink:to="loc_dei_LegalEntityAxis_9884fa2b-d0c0-489e-b943-6082e4f8fd9c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9884fa2b-d0c0-489e-b943-6082e4f8fd9c_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9884fa2b-d0c0-489e-b943-6082e4f8fd9c" xlink:to="loc_dei_EntityDomain_9884fa2b-d0c0-489e-b943-6082e4f8fd9c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_858fcf99-4874-48e5-ac95-7714085b4edc" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9884fa2b-d0c0-489e-b943-6082e4f8fd9c" xlink:to="loc_dei_EntityDomain_858fcf99-4874-48e5-ac95-7714085b4edc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_d957ca67-a1fc-409f-9449-e0f40965ea7a" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_858fcf99-4874-48e5-ac95-7714085b4edc" xlink:to="loc_aal_AmericanAirlinesIncMember_d957ca67-a1fc-409f-9449-e0f40965ea7a" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/LeasesTables" xlink:type="simple" xlink:href="aal-20211231.xsd#LeasesTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/LeasesTables" xlink:type="extended" id="ida52f53d1b584567815a858d3bd5b908_LeasesTables">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_f33cc39c-ed85-4479-87a5-9758155ba475" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCostTableTextBlock_77a6a699-5346-4d0f-9705-5ad9c4014dbb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseCostTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_f33cc39c-ed85-4479-87a5-9758155ba475" xlink:to="loc_us-gaap_LeaseCostTableTextBlock_77a6a699-5346-4d0f-9705-5ad9c4014dbb" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AssetsandLiabilitiesLesseeTableTextBlock_33c54a79-83a4-4e65-8ad5-c9bc7c29fb8c" xlink:href="aal-20211231.xsd#aal_AssetsandLiabilitiesLesseeTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_f33cc39c-ed85-4479-87a5-9758155ba475" xlink:to="loc_aal_AssetsandLiabilitiesLesseeTableTextBlock_33c54a79-83a4-4e65-8ad5-c9bc7c29fb8c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CashFlowLesseeTableTextBlock_b52888ce-1da7-42c7-8d17-24660869b528" xlink:href="aal-20211231.xsd#aal_CashFlowLesseeTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_f33cc39c-ed85-4479-87a5-9758155ba475" xlink:to="loc_aal_CashFlowLesseeTableTextBlock_b52888ce-1da7-42c7-8d17-24660869b528" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_5238daf9-9ad1-49da-8ff0-1cf43987ad70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_f33cc39c-ed85-4479-87a5-9758155ba475" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_5238daf9-9ad1-49da-8ff0-1cf43987ad70" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_4e65691a-c3ad-498e-bfa3-d894bba73ee8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_f33cc39c-ed85-4479-87a5-9758155ba475" xlink:to="loc_us-gaap_FinanceLeaseLiabilityMaturityTableTextBlock_4e65691a-c3ad-498e-bfa3-d894bba73ee8" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_205030ec-29c4-4e88-9227-4023a73e56ba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_f33cc39c-ed85-4479-87a5-9758155ba475" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_205030ec-29c4-4e88-9227-4023a73e56ba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_618fc07c-7d01-4719-8b8d-4d59cf0d6951" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_205030ec-29c4-4e88-9227-4023a73e56ba" xlink:to="loc_dei_LegalEntityAxis_618fc07c-7d01-4719-8b8d-4d59cf0d6951" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_618fc07c-7d01-4719-8b8d-4d59cf0d6951_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_618fc07c-7d01-4719-8b8d-4d59cf0d6951" xlink:to="loc_dei_EntityDomain_618fc07c-7d01-4719-8b8d-4d59cf0d6951_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9fb3f8e5-93e7-4337-8a48-55f177671580" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_618fc07c-7d01-4719-8b8d-4d59cf0d6951" xlink:to="loc_dei_EntityDomain_9fb3f8e5-93e7-4337-8a48-55f177671580" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_0889f62e-5fc5-4c17-8e21-01991bc67c4f" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9fb3f8e5-93e7-4337-8a48-55f177671580" xlink:to="loc_aal_AmericanAirlinesIncMember_0889f62e-5fc5-4c17-8e21-01991bc67c4f" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/LeasesAdditionalInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#LeasesAdditionalInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/LeasesAdditionalInformationDetails" xlink:type="extended" id="i1677367770ac4d47999976a1c83213ed_LeasesAdditionalInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftOperatingUnderOperatingAndFinanceLease_4cb3d030-5cca-4b11-98d2-79df3cfa686c" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftOperatingUnderOperatingAndFinanceLease"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:to="loc_aal_NumberOfAircraftOperatingUnderOperatingAndFinanceLease_4cb3d030-5cca-4b11-98d2-79df3cfa686c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LesseeOperatingAndFinanceLeaseTermOfContract_e2412d4f-aaaa-4c08-8a08-43e3950d85dd" xlink:href="aal-20211231.xsd#aal_LesseeOperatingAndFinanceLeaseTermOfContract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:to="loc_aal_LesseeOperatingAndFinanceLeaseTermOfContract_e2412d4f-aaaa-4c08-8a08-43e3950d85dd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_b0671ad0-90cd-461e-9d7d-2c0b15f21850" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:to="loc_us-gaap_OperatingLeaseCost_b0671ad0-90cd-461e-9d7d-2c0b15f21850" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_8567d6da-3a8f-471f-9eb0-87629593a17d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_8567d6da-3a8f-471f-9eb0-87629593a17d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseImpairmentLoss_ada517ee-fabd-4b12-94a1-eaf3fbfaad4b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseImpairmentLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:to="loc_us-gaap_OperatingLeaseImpairmentLoss_ada517ee-fabd-4b12-94a1-eaf3fbfaad4b" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LesseeOperatingLeaseLeaseNotyetCommencedPaymentsDue_5c80660e-7e5b-423a-a328-ddd7c71521d4" xlink:href="aal-20211231.xsd#aal_LesseeOperatingLeaseLeaseNotyetCommencedPaymentsDue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:to="loc_aal_LesseeOperatingLeaseLeaseNotyetCommencedPaymentsDue_5c80660e-7e5b-423a-a328-ddd7c71521d4" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LesseeOperatingLeaseLeaseNotyetCommencedNumberOfLeasedAircraft_504b184d-7159-436e-8f66-f6a68d191bcf" xlink:href="aal-20211231.xsd#aal_LesseeOperatingLeaseLeaseNotyetCommencedNumberOfLeasedAircraft"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:to="loc_aal_LesseeOperatingLeaseLeaseNotyetCommencedNumberOfLeasedAircraft_504b184d-7159-436e-8f66-f6a68d191bcf" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1_e9171497-1a90-4c69-b76d-92c750268dc6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:to="loc_us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1_e9171497-1a90-4c69-b76d-92c750268dc6" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_7f1a8f2c-3985-42c8-9228-29a0ff11458b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_c2f62489-b6c6-483e-ba54-d277c764ef69" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_7f1a8f2c-3985-42c8-9228-29a0ff11458b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_b36ccd5a-58b4-472b-8992-5aadd77bccc1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_7f1a8f2c-3985-42c8-9228-29a0ff11458b" xlink:to="loc_srt_RangeAxis_b36ccd5a-58b4-472b-8992-5aadd77bccc1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_b36ccd5a-58b4-472b-8992-5aadd77bccc1_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_b36ccd5a-58b4-472b-8992-5aadd77bccc1" xlink:to="loc_srt_RangeMember_b36ccd5a-58b4-472b-8992-5aadd77bccc1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_30778e71-4041-4b64-a8bc-4ab8d4573ec8" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_b36ccd5a-58b4-472b-8992-5aadd77bccc1" xlink:to="loc_srt_RangeMember_30778e71-4041-4b64-a8bc-4ab8d4573ec8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_2cd1f74c-63e6-4601-ba95-9288fe0ea7c5" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_30778e71-4041-4b64-a8bc-4ab8d4573ec8" xlink:to="loc_srt_MinimumMember_2cd1f74c-63e6-4601-ba95-9288fe0ea7c5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_4f76c03a-bd01-4b28-9010-9bab5c182139" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_30778e71-4041-4b64-a8bc-4ab8d4573ec8" xlink:to="loc_srt_MaximumMember_4f76c03a-bd01-4b28-9010-9bab5c182139" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_fbb63f81-e8fc-4dcd-9378-b613c3012a2b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_7f1a8f2c-3985-42c8-9228-29a0ff11458b" xlink:to="loc_dei_LegalEntityAxis_fbb63f81-e8fc-4dcd-9378-b613c3012a2b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fbb63f81-e8fc-4dcd-9378-b613c3012a2b_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_fbb63f81-e8fc-4dcd-9378-b613c3012a2b" xlink:to="loc_dei_EntityDomain_fbb63f81-e8fc-4dcd-9378-b613c3012a2b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_936b3bc3-047c-4e98-916c-8787fa193174" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_fbb63f81-e8fc-4dcd-9378-b613c3012a2b" xlink:to="loc_dei_EntityDomain_936b3bc3-047c-4e98-916c-8787fa193174" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_49ee929e-6356-408e-b2a7-79150b641dfe" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_936b3bc3-047c-4e98-916c-8787fa193174" xlink:to="loc_aal_AmericanAirlinesIncMember_49ee929e-6356-408e-b2a7-79150b641dfe" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_CounterpartyNameAxis_f8873d6c-071f-48f7-b5b2-52b21aeaf83e" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_CounterpartyNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_7f1a8f2c-3985-42c8-9228-29a0ff11458b" xlink:to="loc_srt_CounterpartyNameAxis_f8873d6c-071f-48f7-b5b2-52b21aeaf83e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_f8873d6c-071f-48f7-b5b2-52b21aeaf83e_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_f8873d6c-071f-48f7-b5b2-52b21aeaf83e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_f8873d6c-071f-48f7-b5b2-52b21aeaf83e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9d5886d5-f2fe-4fe4-a592-2154a9923ae1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_f8873d6c-071f-48f7-b5b2-52b21aeaf83e" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9d5886d5-f2fe-4fe4-a592-2154a9923ae1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RepublicAirlineIncMember_1251d9d1-47bc-4d68-bea9-aff74b8c10b2" xlink:href="aal-20211231.xsd#aal_RepublicAirlineIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_9d5886d5-f2fe-4fe4-a592-2154a9923ae1" xlink:to="loc_aal_RepublicAirlineIncMember_1251d9d1-47bc-4d68-bea9-aff74b8c10b2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_68ca929d-55a3-4260-8c4b-a591bf7e74de" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_7f1a8f2c-3985-42c8-9228-29a0ff11458b" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_68ca929d-55a3-4260-8c4b-a591bf7e74de" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_68ca929d-55a3-4260-8c4b-a591bf7e74de_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_68ca929d-55a3-4260-8c4b-a591bf7e74de" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_68ca929d-55a3-4260-8c4b-a591bf7e74de_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_10214ff7-8903-4a5e-99b0-1fdb19efa944" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_68ca929d-55a3-4260-8c4b-a591bf7e74de" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_10214ff7-8903-4a5e-99b0-1fdb19efa944" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RepublicAirwaysHoldingsInc.Member_f27766e7-ecab-478c-8170-9234a996577c" xlink:href="aal-20211231.xsd#aal_RepublicAirwaysHoldingsInc.Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_10214ff7-8903-4a5e-99b0-1fdb19efa944" xlink:to="loc_aal_RepublicAirwaysHoldingsInc.Member_f27766e7-ecab-478c-8170-9234a996577c" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/LeasesComponentsofLeaseExpenseDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#LeasesComponentsofLeaseExpenseDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/LeasesComponentsofLeaseExpenseDetails" xlink:type="extended" id="i7b71575290454b788064a9f4789254d4_LeasesComponentsofLeaseExpenseDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_afaa5397-ad5e-41f7-8936-45d7e1bb2bca" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_677c972e-0247-4f04-a4ef-e6722883f88f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_afaa5397-ad5e-41f7-8936-45d7e1bb2bca" xlink:to="loc_us-gaap_OperatingLeaseCost_677c972e-0247-4f04-a4ef-e6722883f88f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_FinanceLeaseCost1Abstract_60218ac0-fb95-4e9d-88f3-e2faad38b2f3" xlink:href="aal-20211231.xsd#aal_FinanceLeaseCost1Abstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_afaa5397-ad5e-41f7-8936-45d7e1bb2bca" xlink:to="loc_aal_FinanceLeaseCost1Abstract_60218ac0-fb95-4e9d-88f3-e2faad38b2f3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_efef675e-d34b-491a-b494-045cb45f61b3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_FinanceLeaseCost1Abstract_60218ac0-fb95-4e9d-88f3-e2faad38b2f3" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAmortization_efef675e-d34b-491a-b494-045cb45f61b3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseInterestExpense_e6eb2872-1561-441f-83e4-217c96905fd0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseInterestExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_FinanceLeaseCost1Abstract_60218ac0-fb95-4e9d-88f3-e2faad38b2f3" xlink:to="loc_us-gaap_FinanceLeaseInterestExpense_e6eb2872-1561-441f-83e4-217c96905fd0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_45c271bb-a0c4-4c02-9133-8c55045f477f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableLeaseCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_afaa5397-ad5e-41f7-8936-45d7e1bb2bca" xlink:to="loc_us-gaap_VariableLeaseCost_45c271bb-a0c4-4c02-9133-8c55045f477f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_f827f225-2d14-4cd1-b463-568c32755591" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_afaa5397-ad5e-41f7-8936-45d7e1bb2bca" xlink:to="loc_us-gaap_LeaseCost_f827f225-2d14-4cd1-b463-568c32755591" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_f7387c74-f699-4abb-a73f-c7bcca82cf23" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_afaa5397-ad5e-41f7-8936-45d7e1bb2bca" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_f7387c74-f699-4abb-a73f-c7bcca82cf23" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_363de916-b5ab-41ef-bc66-21e54ab57b7c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_f7387c74-f699-4abb-a73f-c7bcca82cf23" xlink:to="loc_dei_LegalEntityAxis_363de916-b5ab-41ef-bc66-21e54ab57b7c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_363de916-b5ab-41ef-bc66-21e54ab57b7c_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_363de916-b5ab-41ef-bc66-21e54ab57b7c" xlink:to="loc_dei_EntityDomain_363de916-b5ab-41ef-bc66-21e54ab57b7c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_dbc9e222-d023-4b83-8751-b12fcc16dabe" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_363de916-b5ab-41ef-bc66-21e54ab57b7c" xlink:to="loc_dei_EntityDomain_dbc9e222-d023-4b83-8751-b12fcc16dabe" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_7991feb4-204e-4a7a-bb9b-98278037f17d" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_dbc9e222-d023-4b83-8751-b12fcc16dabe" xlink:to="loc_aal_AmericanAirlinesIncMember_7991feb4-204e-4a7a-bb9b-98278037f17d" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/LeasesSupplementalBalanceSheetInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#LeasesSupplementalBalanceSheetInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/LeasesSupplementalBalanceSheetInformationDetails" xlink:type="extended" id="i9074195942b94c82921423a4f06af69c_LeasesSupplementalBalanceSheetInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_d3d6c5ba-1921-4da0-b9e7-33bdb93a934c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract_89cbf2b9-932b-47e1-80e4-7f967145e241" xlink:href="aal-20211231.xsd#aal_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d3d6c5ba-1921-4da0-b9e7-33bdb93a934c" xlink:to="loc_aal_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract_89cbf2b9-932b-47e1-80e4-7f967145e241" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_da6e4aca-3ab4-4048-bb0e-cce8c3b86a0b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract_89cbf2b9-932b-47e1-80e4-7f967145e241" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_da6e4aca-3ab4-4048-bb0e-cce8c3b86a0b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_95fd2cc6-a0a8-4d7a-b8bb-a478f5945d67" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract_89cbf2b9-932b-47e1-80e4-7f967145e241" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_95fd2cc6-a0a8-4d7a-b8bb-a478f5945d67" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_cee02654-b2c2-465c-a57c-d6a84267f6de" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract_89cbf2b9-932b-47e1-80e4-7f967145e241" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_cee02654-b2c2-465c-a57c-d6a84267f6de" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_80f38e4e-8852-4d77-a313-555f6a207f48" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract_89cbf2b9-932b-47e1-80e4-7f967145e241" xlink:to="loc_us-gaap_OperatingLeaseLiability_80f38e4e-8852-4d77-a313-555f6a207f48" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract_be99b3e0-ec48-47e8-a7ac-1ee1ba6d1224" xlink:href="aal-20211231.xsd#aal_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d3d6c5ba-1921-4da0-b9e7-33bdb93a934c" xlink:to="loc_aal_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract_be99b3e0-ec48-47e8-a7ac-1ee1ba6d1224" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_77cdede4-988f-451b-8a47-67a2178e5d2b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract_be99b3e0-ec48-47e8-a7ac-1ee1ba6d1224" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetBeforeAccumulatedAmortization_77cdede4-988f-451b-8a47-67a2178e5d2b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization_32308017-b4fa-4acb-8e16-d7516b9bf045" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract_be99b3e0-ec48-47e8-a7ac-1ee1ba6d1224" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetAccumulatedAmortization_32308017-b4fa-4acb-8e16-d7516b9bf045" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAsset_68515f19-c91b-454e-8e97-d914dad8ee7e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAsset"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract_be99b3e0-ec48-47e8-a7ac-1ee1ba6d1224" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAsset_68515f19-c91b-454e-8e97-d914dad8ee7e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_32dab1da-a087-4586-a3fa-bbef822fcfa8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract_be99b3e0-ec48-47e8-a7ac-1ee1ba6d1224" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_32dab1da-a087-4586-a3fa-bbef822fcfa8" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_8a39e9c0-60c8-4930-90d0-b79d27362e19" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract_be99b3e0-ec48-47e8-a7ac-1ee1ba6d1224" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_8a39e9c0-60c8-4930-90d0-b79d27362e19" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_69ecb811-751c-465d-84d2-aec052a2a788" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_FinanceLeaseAssetsAndLiabilitiesLesseeAbstract_be99b3e0-ec48-47e8-a7ac-1ee1ba6d1224" xlink:to="loc_us-gaap_FinanceLeaseLiability_69ecb811-751c-465d-84d2-aec052a2a788" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_WeightedAverageRemainingLeaseTermAbstract_81b41c04-5917-44e1-ac6f-fd96433a757f" xlink:href="aal-20211231.xsd#aal_WeightedAverageRemainingLeaseTermAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d3d6c5ba-1921-4da0-b9e7-33bdb93a934c" xlink:to="loc_aal_WeightedAverageRemainingLeaseTermAbstract_81b41c04-5917-44e1-ac6f-fd96433a757f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_444da352-1921-41e5-8c8a-e051dbae95b0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_WeightedAverageRemainingLeaseTermAbstract_81b41c04-5917-44e1-ac6f-fd96433a757f" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_444da352-1921-41e5-8c8a-e051dbae95b0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_a47492c5-b105-4eb9-b385-4d1032c82b0c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_WeightedAverageRemainingLeaseTermAbstract_81b41c04-5917-44e1-ac6f-fd96433a757f" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_a47492c5-b105-4eb9-b385-4d1032c82b0c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LeasesWeightedAverageDiscountRateAbstract_d8760185-7f34-41ae-ad25-bbc62b636198" xlink:href="aal-20211231.xsd#aal_LeasesWeightedAverageDiscountRateAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d3d6c5ba-1921-4da0-b9e7-33bdb93a934c" xlink:to="loc_aal_LeasesWeightedAverageDiscountRateAbstract_d8760185-7f34-41ae-ad25-bbc62b636198" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_226eaf31-cbb4-4dee-ba27-1ce7ad8e72d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_LeasesWeightedAverageDiscountRateAbstract_d8760185-7f34-41ae-ad25-bbc62b636198" xlink:to="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_226eaf31-cbb4-4dee-ba27-1ce7ad8e72d4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_487befdd-6f30-4005-82ca-be1ef30e957a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_LeasesWeightedAverageDiscountRateAbstract_d8760185-7f34-41ae-ad25-bbc62b636198" xlink:to="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_487befdd-6f30-4005-82ca-be1ef30e957a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_2dd5ca8b-db45-41dd-bdd6-a7776f2c6589" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d3d6c5ba-1921-4da0-b9e7-33bdb93a934c" xlink:to="loc_us-gaap_FinanceLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_2dd5ca8b-db45-41dd-bdd6-a7776f2c6589" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_173e7b36-75e0-4dbe-bdcb-0bc4342170fc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d3d6c5ba-1921-4da0-b9e7-33bdb93a934c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList_173e7b36-75e0-4dbe-bdcb-0bc4342170fc" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_5e40bd64-77b8-439a-bd1b-bf6272b2b42a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d3d6c5ba-1921-4da0-b9e7-33bdb93a934c" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList_5e40bd64-77b8-439a-bd1b-bf6272b2b42a" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_c2de30a7-6e54-4082-809d-c42cc001d66f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_d3d6c5ba-1921-4da0-b9e7-33bdb93a934c" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_c2de30a7-6e54-4082-809d-c42cc001d66f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e77b70e6-53de-491e-b4f3-4568b1a0d76c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_c2de30a7-6e54-4082-809d-c42cc001d66f" xlink:to="loc_dei_LegalEntityAxis_e77b70e6-53de-491e-b4f3-4568b1a0d76c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e77b70e6-53de-491e-b4f3-4568b1a0d76c_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e77b70e6-53de-491e-b4f3-4568b1a0d76c" xlink:to="loc_dei_EntityDomain_e77b70e6-53de-491e-b4f3-4568b1a0d76c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f596a62e-8bec-4950-9204-b98ea5426426" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e77b70e6-53de-491e-b4f3-4568b1a0d76c" xlink:to="loc_dei_EntityDomain_f596a62e-8bec-4950-9204-b98ea5426426" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_5a366aa5-19f5-4bc8-95cd-46445c98ed24" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f596a62e-8bec-4950-9204-b98ea5426426" xlink:to="loc_aal_AmericanAirlinesIncMember_5a366aa5-19f5-4bc8-95cd-46445c98ed24" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/LeasesSupplementalCashFlowandOtherInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#LeasesSupplementalCashFlowandOtherInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/LeasesSupplementalCashFlowandOtherInformationDetails" xlink:type="extended" id="ib630fddd9a044f29a484acb5bbc4adf1_LeasesSupplementalCashFlowandOtherInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_61f1a2db-c900-4a33-9f53-fa3819329826" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CashFlowLesseeAbstract_4f3f7a72-4318-4db8-ac7e-6fd8c3fca8f9" xlink:href="aal-20211231.xsd#aal_CashFlowLesseeAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_61f1a2db-c900-4a33-9f53-fa3819329826" xlink:to="loc_aal_CashFlowLesseeAbstract_4f3f7a72-4318-4db8-ac7e-6fd8c3fca8f9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeasePayments_8e3dce69-00b1-4d1b-a82a-dfc32cb203ca" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeasePayments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_CashFlowLesseeAbstract_4f3f7a72-4318-4db8-ac7e-6fd8c3fca8f9" xlink:to="loc_us-gaap_OperatingLeasePayments_8e3dce69-00b1-4d1b-a82a-dfc32cb203ca" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseInterestPaymentOnLiability_4ae7dbbd-924c-4358-ae6e-c34f28948b9d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseInterestPaymentOnLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_CashFlowLesseeAbstract_4f3f7a72-4318-4db8-ac7e-6fd8c3fca8f9" xlink:to="loc_us-gaap_FinanceLeaseInterestPaymentOnLiability_4ae7dbbd-924c-4358-ae6e-c34f28948b9d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeasePrincipalPayments_af97a360-7949-4996-8251-4a9d89798c26" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeasePrincipalPayments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_CashFlowLesseeAbstract_4f3f7a72-4318-4db8-ac7e-6fd8c3fca8f9" xlink:to="loc_us-gaap_FinanceLeasePrincipalPayments_af97a360-7949-4996-8251-4a9d89798c26" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NoncashLeaseTransactionsAbstract_2febd049-a992-468f-8927-86c001bebaaa" xlink:href="aal-20211231.xsd#aal_NoncashLeaseTransactionsAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_61f1a2db-c900-4a33-9f53-fa3819329826" xlink:to="loc_aal_NoncashLeaseTransactionsAbstract_2febd049-a992-468f-8927-86c001bebaaa" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_1e216416-04d3-4ff8-811b-5c2a5caa868e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_NoncashLeaseTransactionsAbstract_2febd049-a992-468f-8927-86c001bebaaa" xlink:to="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_1e216416-04d3-4ff8-811b-5c2a5caa868e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability_9336556f-60c0-467a-9edf-d71ae51940c1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_NoncashLeaseTransactionsAbstract_2febd049-a992-468f-8927-86c001bebaaa" xlink:to="loc_us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability_9336556f-60c0-467a-9edf-d71ae51940c1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OperatingLeaseLiabilityConvertedToFinanceLeaseLiability_b5f4c53c-c9b8-4eee-9b8b-2007a28ca8c2" xlink:href="aal-20211231.xsd#aal_OperatingLeaseLiabilityConvertedToFinanceLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_NoncashLeaseTransactionsAbstract_2febd049-a992-468f-8927-86c001bebaaa" xlink:to="loc_aal_OperatingLeaseLiabilityConvertedToFinanceLeaseLiability_b5f4c53c-c9b8-4eee-9b8b-2007a28ca8c2" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SaleAndLeasebackTransactionGainLossNet_3572cd62-1422-433d-af0f-01d0e09df608" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SaleAndLeasebackTransactionGainLossNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_61f1a2db-c900-4a33-9f53-fa3819329826" xlink:to="loc_us-gaap_SaleAndLeasebackTransactionGainLossNet_3572cd62-1422-433d-af0f-01d0e09df608" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_b71bcb50-9367-4e0c-a41f-c3344574b066" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_61f1a2db-c900-4a33-9f53-fa3819329826" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_b71bcb50-9367-4e0c-a41f-c3344574b066" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_26a48bb3-59f6-42e2-8a74-335c0bbd096e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_b71bcb50-9367-4e0c-a41f-c3344574b066" xlink:to="loc_dei_LegalEntityAxis_26a48bb3-59f6-42e2-8a74-335c0bbd096e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_26a48bb3-59f6-42e2-8a74-335c0bbd096e_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_26a48bb3-59f6-42e2-8a74-335c0bbd096e" xlink:to="loc_dei_EntityDomain_26a48bb3-59f6-42e2-8a74-335c0bbd096e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4492d630-20f9-4555-8a0e-30da7398c310" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_26a48bb3-59f6-42e2-8a74-335c0bbd096e" xlink:to="loc_dei_EntityDomain_4492d630-20f9-4555-8a0e-30da7398c310" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_cb79ae7f-e3d3-42ea-a759-8dda2265e59c" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4492d630-20f9-4555-8a0e-30da7398c310" xlink:to="loc_aal_AmericanAirlinesIncMember_cb79ae7f-e3d3-42ea-a759-8dda2265e59c" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/LeasesMaturitiesofLeaseLiabilitiesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#LeasesMaturitiesofLeaseLiabilitiesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/LeasesMaturitiesofLeaseLiabilitiesDetails" xlink:type="extended" id="iddcb08deba31494d80da05fd50346f7a_LeasesMaturitiesofLeaseLiabilitiesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionLineItems_bb283a07-8f51-430e-b173-26bb7569022d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_bb283a07-8f51-430e-b173-26bb7569022d" xlink:to="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_d68560e0-b404-48a7-b089-3b77cd2f991d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_d68560e0-b404-48a7-b089-3b77cd2f991d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_e2250ec9-767a-42e9-bd62-2f14d8dd5cdf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_e2250ec9-767a-42e9-bd62-2f14d8dd5cdf" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_03700aa0-dcfd-4944-a5f3-25b60a1d91c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_03700aa0-dcfd-4944-a5f3-25b60a1d91c7" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_857861ec-316d-41fa-95a9-51c3a31a32a4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_857861ec-316d-41fa-95a9-51c3a31a32a4" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_2b4fc17d-3869-4ce9-9f93-c9a310e6b500" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_2b4fc17d-3869-4ce9-9f93-c9a310e6b500" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_fcb4305c-d640-45fd-9ed0-fa146b9a5cd0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_fcb4305c-d640-45fd-9ed0-fa146b9a5cd0" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7fe03ede-ded5-4172-b6e4-93378b310f2a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_7fe03ede-ded5-4172-b6e4-93378b310f2a" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_0293eb42-e324-448f-9bad-da71c838662b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_0293eb42-e324-448f-9bad-da71c838662b" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_abbc520a-edce-4c4f-b38a-e548982ce911" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_OperatingLeaseLiability_abbc520a-edce-4c4f-b38a-e548982ce911" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_d6de9ae1-64b5-4110-a2f6-85a3ee733d64" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_d6de9ae1-64b5-4110-a2f6-85a3ee733d64" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_931745f6-978f-4c23-826d-d4b915d49e51" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLeaseLiabilitiesPaymentsDueAbstract_a6779c59-2f72-4164-a96c-25cd65c15adf" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_931745f6-978f-4c23-826d-d4b915d49e51" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_bb283a07-8f51-430e-b173-26bb7569022d" xlink:to="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_9da7eeb4-3bc6-4732-843c-ddbff1d679a5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_9da7eeb4-3bc6-4732-843c-ddbff1d679a5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_63bcbe7e-9e3c-4c69-a58d-6aafd484d901" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_63bcbe7e-9e3c-4c69-a58d-6aafd484d901" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_7d9b144d-5e74-48fb-804c-2053217902c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_7d9b144d-5e74-48fb-804c-2053217902c9" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_d978f66c-c296-4365-8917-a7ee6d1bb058" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_d978f66c-c296-4365-8917-a7ee6d1bb058" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_8d312bea-6b9a-445a-99ff-fad91a7b7344" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueYearFive_8d312bea-6b9a-445a-99ff-fad91a7b7344" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_d839cb86-ecb6-40c4-81dc-d5721b22ba6b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDueAfterYearFive_d839cb86-ecb6-40c4-81dc-d5721b22ba6b" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_73660577-efa5-4288-930a-bcc80c357cef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityPaymentsDue_73660577-efa5-4288-930a-bcc80c357cef" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_35f3c02f-babf-4a99-8bd3-9a6c47d9a850" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_35f3c02f-babf-4a99-8bd3-9a6c47d9a850" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiability_7fd27bfc-3372-4290-8ea7-e65c60fcef09" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiability_7fd27bfc-3372-4290-8ea7-e65c60fcef09" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_52643194-c706-47cb-a5d2-d8b919b20c75" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_52643194-c706-47cb-a5d2-d8b919b20c75" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_acb03319-f4f0-457b-acc6-81c3b2c472d3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract_33b3efc8-e69c-4076-9baa-eab4626e764a" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_acb03319-f4f0-457b-acc6-81c3b2c472d3" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeLeaseDescriptionTable_ac79d744-4616-42a2-9028-ad0f443e4b48" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeLeaseDescriptionTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LesseeLeaseDescriptionLineItems_bb283a07-8f51-430e-b173-26bb7569022d" xlink:to="loc_us-gaap_LesseeLeaseDescriptionTable_ac79d744-4616-42a2-9028-ad0f443e4b48" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a8e1fb0e-dce6-4dd7-b1c3-2093c0ebe51b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LesseeLeaseDescriptionTable_ac79d744-4616-42a2-9028-ad0f443e4b48" xlink:to="loc_dei_LegalEntityAxis_a8e1fb0e-dce6-4dd7-b1c3-2093c0ebe51b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a8e1fb0e-dce6-4dd7-b1c3-2093c0ebe51b_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a8e1fb0e-dce6-4dd7-b1c3-2093c0ebe51b" xlink:to="loc_dei_EntityDomain_a8e1fb0e-dce6-4dd7-b1c3-2093c0ebe51b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0d68142b-5c83-407a-aa15-0ff512cd06aa" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a8e1fb0e-dce6-4dd7-b1c3-2093c0ebe51b" xlink:to="loc_dei_EntityDomain_0d68142b-5c83-407a-aa15-0ff512cd06aa" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_68da5d43-13c4-497e-a900-3ebfbf4d5758" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0d68142b-5c83-407a-aa15-0ff512cd06aa" xlink:to="loc_aal_AmericanAirlinesIncMember_68da5d43-13c4-497e-a900-3ebfbf4d5758" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/IncomeTaxes" xlink:type="simple" xlink:href="aal-20211231.xsd#IncomeTaxes"/>
<link:definitionLink xlink:role="http://www.aa.com/role/IncomeTaxes" xlink:type="extended" id="i28e3bb4a1d8a493c922d4e6d10e8d134_IncomeTaxes">
<link:loc xlink:type="locator" xlink:label="loc_aal_IncomeTaxesLineItems_7e47018c-b400-43b8-be23-044958295dd2" xlink:href="aal-20211231.xsd#aal_IncomeTaxesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_3f911eb0-3b7f-44f5-88ca-3420e8487eba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_7e47018c-b400-43b8-be23-044958295dd2" xlink:to="loc_us-gaap_IncomeTaxDisclosureTextBlock_3f911eb0-3b7f-44f5-88ca-3420e8487eba" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_IncomeTaxesTable_087cc62e-606e-4efc-ad6b-230a667da2d8" xlink:href="aal-20211231.xsd#aal_IncomeTaxesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_IncomeTaxesLineItems_7e47018c-b400-43b8-be23-044958295dd2" xlink:to="loc_aal_IncomeTaxesTable_087cc62e-606e-4efc-ad6b-230a667da2d8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4513b0d3-4073-49a6-9157-f24a1e831436" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_IncomeTaxesTable_087cc62e-606e-4efc-ad6b-230a667da2d8" xlink:to="loc_dei_LegalEntityAxis_4513b0d3-4073-49a6-9157-f24a1e831436" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4513b0d3-4073-49a6-9157-f24a1e831436_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4513b0d3-4073-49a6-9157-f24a1e831436" xlink:to="loc_dei_EntityDomain_4513b0d3-4073-49a6-9157-f24a1e831436_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_331c15be-1cff-4e1c-bfc4-5129a3e541ca" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4513b0d3-4073-49a6-9157-f24a1e831436" xlink:to="loc_dei_EntityDomain_331c15be-1cff-4e1c-bfc4-5129a3e541ca" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_860eb4e4-2347-4c93-bdd8-402397d817f8" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_331c15be-1cff-4e1c-bfc4-5129a3e541ca" xlink:to="loc_aal_AmericanAirlinesIncMember_860eb4e4-2347-4c93-bdd8-402397d817f8" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/IncomeTaxesTables" xlink:type="simple" xlink:href="aal-20211231.xsd#IncomeTaxesTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/IncomeTaxesTables" xlink:type="extended" id="i01667eb2f4594fa09824a0d7bb51dd3c_IncomeTaxesTables">
<link:loc xlink:type="locator" xlink:label="loc_aal_IncomeTaxesLineItems_f5b899fd-c59f-44cf-bb21-92d42d371d50" xlink:href="aal-20211231.xsd#aal_IncomeTaxesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_82f33d8e-d291-4e90-8cf3-8286c67a3293" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_f5b899fd-c59f-44cf-bb21-92d42d371d50" xlink:to="loc_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_82f33d8e-d291-4e90-8cf3-8286c67a3293" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_f7b8ad5a-42e3-4838-9143-4338b64615ab" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_f5b899fd-c59f-44cf-bb21-92d42d371d50" xlink:to="loc_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_f7b8ad5a-42e3-4838-9143-4338b64615ab" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_aaa895fa-df23-443d-98a7-a7352b22fcb8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_f5b899fd-c59f-44cf-bb21-92d42d371d50" xlink:to="loc_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_aaa895fa-df23-443d-98a7-a7352b22fcb8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_IncomeTaxesTable_46dc3116-93a7-4877-8a62-fec45c6d153e" xlink:href="aal-20211231.xsd#aal_IncomeTaxesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_IncomeTaxesLineItems_f5b899fd-c59f-44cf-bb21-92d42d371d50" xlink:to="loc_aal_IncomeTaxesTable_46dc3116-93a7-4877-8a62-fec45c6d153e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_645784d8-14a2-4426-b40a-e146428e6787" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_IncomeTaxesTable_46dc3116-93a7-4877-8a62-fec45c6d153e" xlink:to="loc_dei_LegalEntityAxis_645784d8-14a2-4426-b40a-e146428e6787" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_645784d8-14a2-4426-b40a-e146428e6787_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_645784d8-14a2-4426-b40a-e146428e6787" xlink:to="loc_dei_EntityDomain_645784d8-14a2-4426-b40a-e146428e6787_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_56806052-96ba-42ce-8e06-9dbe01655d5d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_645784d8-14a2-4426-b40a-e146428e6787" xlink:to="loc_dei_EntityDomain_56806052-96ba-42ce-8e06-9dbe01655d5d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_3f226acb-6193-46d2-a418-afb202b56a2b" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_56806052-96ba-42ce-8e06-9dbe01655d5d" xlink:to="loc_aal_AmericanAirlinesIncMember_3f226acb-6193-46d2-a418-afb202b56a2b" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/IncomeTaxesComponentsofIncomeTaxProvisionBenefitDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#IncomeTaxesComponentsofIncomeTaxProvisionBenefitDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/IncomeTaxesComponentsofIncomeTaxProvisionBenefitDetails" xlink:type="extended" id="iabd215499be14c59ba22c0444f122de1_IncomeTaxesComponentsofIncomeTaxProvisionBenefitDetails">
<link:loc xlink:type="locator" xlink:label="loc_aal_ComponentsOfIncomeTaxesLineItems_d5f6a10e-eef0-4fe0-8fed-e0c08e9f1c4a" xlink:href="aal-20211231.xsd#aal_ComponentsOfIncomeTaxesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract_5f3df458-99f6-4964-bcca-f3a5abbfa903" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_ComponentsOfIncomeTaxesLineItems_d5f6a10e-eef0-4fe0-8fed-e0c08e9f1c4a" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract_5f3df458-99f6-4964-bcca-f3a5abbfa903" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_53bb66a3-78d7-488d-ab14-25398fed0b8f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract_5f3df458-99f6-4964-bcca-f3a5abbfa903" xlink:to="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_53bb66a3-78d7-488d-ab14-25398fed0b8f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentForeignTaxExpenseBenefit_539b9a46-627a-4b3b-84a1-49627ff36ad0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract_5f3df458-99f6-4964-bcca-f3a5abbfa903" xlink:to="loc_us-gaap_CurrentForeignTaxExpenseBenefit_539b9a46-627a-4b3b-84a1-49627ff36ad0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_5c64208e-aee2-44e2-a028-68bbe301e90e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract_5f3df458-99f6-4964-bcca-f3a5abbfa903" xlink:to="loc_us-gaap_CurrentIncomeTaxExpenseBenefit_5c64208e-aee2-44e2-a028-68bbe301e90e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract_c5355d94-2be0-410a-848e-62bf802f89d9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_ComponentsOfIncomeTaxesLineItems_d5f6a10e-eef0-4fe0-8fed-e0c08e9f1c4a" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract_c5355d94-2be0-410a-848e-62bf802f89d9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_91f66514-cecb-43fc-ae9e-6bfef22a90ef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract_c5355d94-2be0-410a-848e-62bf802f89d9" xlink:to="loc_us-gaap_DeferredFederalIncomeTaxExpenseBenefit_91f66514-cecb-43fc-ae9e-6bfef22a90ef" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_d0b8d66d-b7ac-4832-9d83-c4344905f50d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract_c5355d94-2be0-410a-848e-62bf802f89d9" xlink:to="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_d0b8d66d-b7ac-4832-9d83-c4344905f50d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_9228d0d3-3d85-4e2b-a032-2c1dfa6a2479" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract_c5355d94-2be0-410a-848e-62bf802f89d9" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_9228d0d3-3d85-4e2b-a032-2c1dfa6a2479" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_dbfb862e-75f8-4191-812c-f5aa7bfb7c14" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_ComponentsOfIncomeTaxesLineItems_d5f6a10e-eef0-4fe0-8fed-e0c08e9f1c4a" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_dbfb862e-75f8-4191-812c-f5aa7bfb7c14" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ComponentsOfIncomeTaxesTable_5bed4067-281c-4056-97f8-a4e91d97eb89" xlink:href="aal-20211231.xsd#aal_ComponentsOfIncomeTaxesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_ComponentsOfIncomeTaxesLineItems_d5f6a10e-eef0-4fe0-8fed-e0c08e9f1c4a" xlink:to="loc_aal_ComponentsOfIncomeTaxesTable_5bed4067-281c-4056-97f8-a4e91d97eb89" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_1c6e0833-8d2b-45f2-8b3d-95cd921aacca" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_ComponentsOfIncomeTaxesTable_5bed4067-281c-4056-97f8-a4e91d97eb89" xlink:to="loc_dei_LegalEntityAxis_1c6e0833-8d2b-45f2-8b3d-95cd921aacca" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1c6e0833-8d2b-45f2-8b3d-95cd921aacca_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_1c6e0833-8d2b-45f2-8b3d-95cd921aacca" xlink:to="loc_dei_EntityDomain_1c6e0833-8d2b-45f2-8b3d-95cd921aacca_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5f1e321d-ad70-4029-95b5-b128bbb6ba32" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_1c6e0833-8d2b-45f2-8b3d-95cd921aacca" xlink:to="loc_dei_EntityDomain_5f1e321d-ad70-4029-95b5-b128bbb6ba32" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_89e7cc87-68fb-49c5-90a2-4dfec2f64d22" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5f1e321d-ad70-4029-95b5-b128bbb6ba32" xlink:to="loc_aal_AmericanAirlinesIncMember_89e7cc87-68fb-49c5-90a2-4dfec2f64d22" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/IncomeTaxesReconciliationofIncomeTaxProvisionDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#IncomeTaxesReconciliationofIncomeTaxProvisionDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/IncomeTaxesReconciliationofIncomeTaxProvisionDetails" xlink:type="extended" id="ib44b6795c7034fc486dbecf36aad4483_IncomeTaxesReconciliationofIncomeTaxProvisionDetails">
<link:loc xlink:type="locator" xlink:label="loc_aal_IncomeTaxDisclosureLineItems_858627f2-9bdb-4702-b71c-cb785d92f286" xlink:href="aal-20211231.xsd#aal_IncomeTaxDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_b3e60cad-876f-49b7-82df-094ab652451c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxDisclosureLineItems_858627f2-9bdb-4702-b71c-cb785d92f286" xlink:to="loc_us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_b3e60cad-876f-49b7-82df-094ab652451c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_c6a40e21-df9e-41fd-8735-76d22ede8add" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxDisclosureLineItems_858627f2-9bdb-4702-b71c-cb785d92f286" xlink:to="loc_us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_c6a40e21-df9e-41fd-8735-76d22ede8add" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_3c892771-14dd-4252-9c27-d5e75167dfd5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxDisclosureLineItems_858627f2-9bdb-4702-b71c-cb785d92f286" xlink:to="loc_us-gaap_IncomeTaxReconciliationNondeductibleExpense_3c892771-14dd-4252-9c27-d5e75167dfd5" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_b62a5eb5-771b-4fcd-ad5c-34709de18fab" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxDisclosureLineItems_858627f2-9bdb-4702-b71c-cb785d92f286" xlink:to="loc_us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_b62a5eb5-771b-4fcd-ad5c-34709de18fab" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_31162e95-9a15-4369-9895-3acce3e1b266" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxDisclosureLineItems_858627f2-9bdb-4702-b71c-cb785d92f286" xlink:to="loc_us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_31162e95-9a15-4369-9895-3acce3e1b266" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_ffefdb08-0c23-4235-9de3-4ccd5349a4b8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxDisclosureLineItems_858627f2-9bdb-4702-b71c-cb785d92f286" xlink:to="loc_us-gaap_IncomeTaxReconciliationOtherAdjustments_ffefdb08-0c23-4235-9de3-4ccd5349a4b8" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_83197278-272d-498b-bee2-e8c8fb5c5d76" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxDisclosureLineItems_858627f2-9bdb-4702-b71c-cb785d92f286" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_83197278-272d-498b-bee2-e8c8fb5c5d76" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ComponentsOfIncomeTaxesTable_ea94788a-bc51-42ad-91b9-57aec5c142eb" xlink:href="aal-20211231.xsd#aal_ComponentsOfIncomeTaxesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_IncomeTaxDisclosureLineItems_858627f2-9bdb-4702-b71c-cb785d92f286" xlink:to="loc_aal_ComponentsOfIncomeTaxesTable_ea94788a-bc51-42ad-91b9-57aec5c142eb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7bf05521-2c46-4781-9a6f-7c5e7cfde0fa" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_ComponentsOfIncomeTaxesTable_ea94788a-bc51-42ad-91b9-57aec5c142eb" xlink:to="loc_dei_LegalEntityAxis_7bf05521-2c46-4781-9a6f-7c5e7cfde0fa" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7bf05521-2c46-4781-9a6f-7c5e7cfde0fa_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7bf05521-2c46-4781-9a6f-7c5e7cfde0fa" xlink:to="loc_dei_EntityDomain_7bf05521-2c46-4781-9a6f-7c5e7cfde0fa_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8e489364-56ad-44c1-a455-181243d3ef4c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7bf05521-2c46-4781-9a6f-7c5e7cfde0fa" xlink:to="loc_dei_EntityDomain_8e489364-56ad-44c1-a455-181243d3ef4c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_55ac87ca-6169-47b0-b4fe-e42733422f4f" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8e489364-56ad-44c1-a455-181243d3ef4c" xlink:to="loc_aal_AmericanAirlinesIncMember_55ac87ca-6169-47b0-b4fe-e42733422f4f" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails" xlink:type="extended" id="ifebe123c7ed54426b496caadd4355eea_IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_d018f042-eff0-4b64-b2e1-800b8ebcb1e2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLossCarryforwardsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsNetAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d018f042-eff0-4b64-b2e1-800b8ebcb1e2" xlink:to="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DeferredTaxAssetsOperatingLossCarryforwardsAndOtherCarryforwards_6be7c287-1581-4d50-bff5-b6d4ef46577f" xlink:href="aal-20211231.xsd#aal_DeferredTaxAssetsOperatingLossCarryforwardsAndOtherCarryforwards"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_aal_DeferredTaxAssetsOperatingLossCarryforwardsAndOtherCarryforwards_6be7c287-1581-4d50-bff5-b6d4ef46577f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsFrequentFlierLiability_dde160e3-0920-4fb3-a492-b84f506125a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsFrequentFlierLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_us-gaap_DeferredTaxAssetsFrequentFlierLiability_dde160e3-0920-4fb3-a492-b84f506125a8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DeferredTaxAssetsLeases_5c27bb58-7241-42aa-a98e-62076a7d02fa" xlink:href="aal-20211231.xsd#aal_DeferredTaxAssetsLeases"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_aal_DeferredTaxAssetsLeases_5c27bb58-7241-42aa-a98e-62076a7d02fa" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions_9bade9f6-c489-4576-9009-1ab3453b254a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions_9bade9f6-c489-4576-9009-1ab3453b254a" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits_da55ae49-9585-4ebf-8674-ba728abefaa7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits_da55ae49-9585-4ebf-8674-ba728abefaa7" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent_4c92ded0-98ee-40b1-8fc4-23735c32c751" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsDeferredRent_4c92ded0-98ee-40b1-8fc4-23735c32c751" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther_bbd90b96-30ba-4b50-aa9b-f6331b59a8c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther_bbd90b96-30ba-4b50-aa9b-f6331b59a8c7" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOther_90977ce2-a3d7-494d-8ebb-125dd7d1906d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsOther"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_us-gaap_DeferredTaxAssetsOther_90977ce2-a3d7-494d-8ebb-125dd7d1906d" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsGross_1e27f7d0-9ba5-4476-8f6a-3c22d6c95324" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsGross"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_us-gaap_DeferredTaxAssetsGross_1e27f7d0-9ba5-4476-8f6a-3c22d6c95324" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_560e3e88-61ff-4bfd-8484-d8383b5da7b6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_560e3e88-61ff-4bfd-8484-d8383b5da7b6" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsNet_f9c1ed0f-2e6a-498b-bf06-c001d482f601" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxAssetsNetAbstract_16dea3de-9bda-499f-b14f-cbdb899b79a5" xlink:to="loc_us-gaap_DeferredTaxAssetsNet_f9c1ed0f-2e6a-498b-bf06-c001d482f601" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesNetAbstract_28661702-8925-401b-becc-de2e8fa06beb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNetAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d018f042-eff0-4b64-b2e1-800b8ebcb1e2" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesNetAbstract_28661702-8925-401b-becc-de2e8fa06beb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DeferredTaxLiabilitiesAcceleratedDepreciationAndAmortization_34f64555-44a7-4c83-9d5c-f6125057bb39" xlink:href="aal-20211231.xsd#aal_DeferredTaxLiabilitiesAcceleratedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesNetAbstract_28661702-8925-401b-becc-de2e8fa06beb" xlink:to="loc_aal_DeferredTaxLiabilitiesAcceleratedDepreciationAndAmortization_34f64555-44a7-4c83-9d5c-f6125057bb39" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_41ccab56-c8ef-40e5-b603-24c52141941e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesLeasingArrangements"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesNetAbstract_28661702-8925-401b-becc-de2e8fa06beb" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_41ccab56-c8ef-40e5-b603-24c52141941e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_92c35535-2e16-4869-94da-ffd8bf69e0be" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOther"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesNetAbstract_28661702-8925-401b-becc-de2e8fa06beb" xlink:to="loc_us-gaap_DeferredTaxLiabilitiesOther_92c35535-2e16-4869-94da-ffd8bf69e0be" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_10feab4d-8306-464e-88bb-3f392a959f8a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredTaxLiabilitiesNetAbstract_28661702-8925-401b-becc-de2e8fa06beb" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilities_10feab4d-8306-464e-88bb-3f392a959f8a" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_29bc1b06-a9a9-4f12-877f-db2392cfb229" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d018f042-eff0-4b64-b2e1-800b8ebcb1e2" xlink:to="loc_us-gaap_DeferredTaxAssetsLiabilitiesNet_29bc1b06-a9a9-4f12-877f-db2392cfb229" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_e675d900-91ae-446a-8107-b49ac9db6d02" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLossCarryforwardsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d018f042-eff0-4b64-b2e1-800b8ebcb1e2" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_e675d900-91ae-446a-8107-b49ac9db6d02" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_3e5edaed-3cb7-4585-b741-740e004e73bf" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_e675d900-91ae-446a-8107-b49ac9db6d02" xlink:to="loc_dei_LegalEntityAxis_3e5edaed-3cb7-4585-b741-740e004e73bf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3e5edaed-3cb7-4585-b741-740e004e73bf_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3e5edaed-3cb7-4585-b741-740e004e73bf" xlink:to="loc_dei_EntityDomain_3e5edaed-3cb7-4585-b741-740e004e73bf_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_089efe9b-a6d4-44b3-bd9b-438a3d163edb" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3e5edaed-3cb7-4585-b741-740e004e73bf" xlink:to="loc_dei_EntityDomain_089efe9b-a6d4-44b3-bd9b-438a3d163edb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_f38fb2b7-fc58-4993-a516-0405e5d6ab62" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_089efe9b-a6d4-44b3-bd9b-438a3d163edb" xlink:to="loc_aal_AmericanAirlinesIncMember_f38fb2b7-fc58-4993-a516-0405e5d6ab62" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/IncomeTaxesAdditionalDisclosuresDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#IncomeTaxesAdditionalDisclosuresDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/IncomeTaxesAdditionalDisclosuresDetails" xlink:type="extended" id="i5972dca0e31f4e98a64fc009fd9dca0d_IncomeTaxesAdditionalDisclosuresDetails">
<link:loc xlink:type="locator" xlink:label="loc_aal_IncomeTaxesLineItems_19ff3db2-c72e-43aa-8e00-a85863e6ae30" xlink:href="aal-20211231.xsd#aal_IncomeTaxesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_c5125352-9b6c-4adb-ba3c-0efeb4117d13" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLossCarryforwards"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_19ff3db2-c72e-43aa-8e00-a85863e6ae30" xlink:to="loc_us-gaap_OperatingLossCarryforwards_c5125352-9b6c-4adb-ba3c-0efeb4117d13" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherCarryforwards_ba85d4e9-6acf-42da-b00a-a73989460764" xlink:href="aal-20211231.xsd#aal_OtherCarryforwards"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_19ff3db2-c72e-43aa-8e00-a85863e6ae30" xlink:to="loc_aal_OtherCarryforwards_ba85d4e9-6acf-42da-b00a-a73989460764" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OperatingLossCarryforwardsAndOtherCarryforwardsSubjectToExpiration_aa46e9b1-b3de-4155-b8e4-775fcb44a8d2" xlink:href="aal-20211231.xsd#aal_OperatingLossCarryforwardsAndOtherCarryforwardsSubjectToExpiration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_19ff3db2-c72e-43aa-8e00-a85863e6ae30" xlink:to="loc_aal_OperatingLossCarryforwardsAndOtherCarryforwardsSubjectToExpiration_aa46e9b1-b3de-4155-b8e4-775fcb44a8d2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OperatingLossCarryforwardsAndOtherCarryforwardsNotSubjectToExpiration_52636ee4-f464-47e2-963d-95150fa0a65b" xlink:href="aal-20211231.xsd#aal_OperatingLossCarryforwardsAndOtherCarryforwardsNotSubjectToExpiration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_19ff3db2-c72e-43aa-8e00-a85863e6ae30" xlink:to="loc_aal_OperatingLossCarryforwardsAndOtherCarryforwardsNotSubjectToExpiration_52636ee4-f464-47e2-963d-95150fa0a65b" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OperatingLossCarryforwardsSubjectToExpiration_44fdcd85-f20a-42c9-8f00-b2409cf33f26" xlink:href="aal-20211231.xsd#aal_OperatingLossCarryforwardsSubjectToExpiration"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_19ff3db2-c72e-43aa-8e00-a85863e6ae30" xlink:to="loc_aal_OperatingLossCarryforwardsSubjectToExpiration_44fdcd85-f20a-42c9-8f00-b2409cf33f26" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_a2e5faca-9556-415b-9676-6c260450d064" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_19ff3db2-c72e-43aa-8e00-a85863e6ae30" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_a2e5faca-9556-415b-9676-6c260450d064" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_6e0f1c13-96b6-4850-ac6f-d7b3249fa8a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_IncomeTaxesLineItems_19ff3db2-c72e-43aa-8e00-a85863e6ae30" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_6e0f1c13-96b6-4850-ac6f-d7b3249fa8a8" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_IncomeTaxesTable_9ad7ade6-8b0d-4f1e-8464-2b4389c7d19d" xlink:href="aal-20211231.xsd#aal_IncomeTaxesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_IncomeTaxesLineItems_19ff3db2-c72e-43aa-8e00-a85863e6ae30" xlink:to="loc_aal_IncomeTaxesTable_9ad7ade6-8b0d-4f1e-8464-2b4389c7d19d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8d29d745-4f95-4ce0-93cf-4acdb199dcc6" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_IncomeTaxesTable_9ad7ade6-8b0d-4f1e-8464-2b4389c7d19d" xlink:to="loc_dei_LegalEntityAxis_8d29d745-4f95-4ce0-93cf-4acdb199dcc6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8d29d745-4f95-4ce0-93cf-4acdb199dcc6_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8d29d745-4f95-4ce0-93cf-4acdb199dcc6" xlink:to="loc_dei_EntityDomain_8d29d745-4f95-4ce0-93cf-4acdb199dcc6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e415e52d-bb2c-44c7-b391-843d2e3214d8" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8d29d745-4f95-4ce0-93cf-4acdb199dcc6" xlink:to="loc_dei_EntityDomain_e415e52d-bb2c-44c7-b391-843d2e3214d8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_45fa8e8b-35fb-48eb-87d4-fea1edaec780" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e415e52d-bb2c-44c7-b391-843d2e3214d8" xlink:to="loc_aal_AmericanAirlinesIncMember_45fa8e8b-35fb-48eb-87d4-fea1edaec780" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_f2436a91-1eb2-45e0-b55f-3ce423230d8b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_IncomeTaxesTable_9ad7ade6-8b0d-4f1e-8464-2b4389c7d19d" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_f2436a91-1eb2-45e0-b55f-3ce423230d8b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_f2436a91-1eb2-45e0-b55f-3ce423230d8b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_f2436a91-1eb2-45e0-b55f-3ce423230d8b" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_f2436a91-1eb2-45e0-b55f-3ce423230d8b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_3f53286a-2b79-4cb0-b9f6-30e9a7f23fe1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_f2436a91-1eb2-45e0-b55f-3ce423230d8b" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_3f53286a-2b79-4cb0-b9f6-30e9a7f23fe1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_aea9b84c-3d3e-44b7-a03b-18338b89a8e0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DomesticCountryMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_3f53286a-2b79-4cb0-b9f6-30e9a7f23fe1" xlink:to="loc_us-gaap_DomesticCountryMember_aea9b84c-3d3e-44b7-a03b-18338b89a8e0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_58062011-5791-4807-bf08-b2efe1c1a1c2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_3f53286a-2b79-4cb0-b9f6-30e9a7f23fe1" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_58062011-5791-4807-bf08-b2efe1c1a1c2" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/RiskManagement" xlink:type="simple" xlink:href="aal-20211231.xsd#RiskManagement"/>
<link:definitionLink xlink:role="http://www.aa.com/role/RiskManagement" xlink:type="extended" id="i147f0994edb64c27858f26505f4da724_RiskManagement">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_3a6fc087-3be9-435e-9bb9-c5de7316b752" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RiskManagementTextBlock_ab54a36d-264d-4da7-95eb-712584e3eec3" xlink:href="aal-20211231.xsd#aal_RiskManagementTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3a6fc087-3be9-435e-9bb9-c5de7316b752" xlink:to="loc_aal_RiskManagementTextBlock_ab54a36d-264d-4da7-95eb-712584e3eec3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_db5f0206-c0a7-4479-afb9-8708b0570d30" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3a6fc087-3be9-435e-9bb9-c5de7316b752" xlink:to="loc_us-gaap_DebtInstrumentTable_db5f0206-c0a7-4479-afb9-8708b0570d30" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_93a47f0f-9cc0-419d-b567-a7fbfd0ccf9b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_db5f0206-c0a7-4479-afb9-8708b0570d30" xlink:to="loc_dei_LegalEntityAxis_93a47f0f-9cc0-419d-b567-a7fbfd0ccf9b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_93a47f0f-9cc0-419d-b567-a7fbfd0ccf9b_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_93a47f0f-9cc0-419d-b567-a7fbfd0ccf9b" xlink:to="loc_dei_EntityDomain_93a47f0f-9cc0-419d-b567-a7fbfd0ccf9b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c9737fda-4d14-41c6-9a47-443c3f923a27" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_93a47f0f-9cc0-419d-b567-a7fbfd0ccf9b" xlink:to="loc_dei_EntityDomain_c9737fda-4d14-41c6-9a47-443c3f923a27" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_03418f72-431a-4076-afe3-2f478db41dee" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_c9737fda-4d14-41c6-9a47-443c3f923a27" xlink:to="loc_aal_AmericanAirlinesIncMember_03418f72-431a-4076-afe3-2f478db41dee" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/RiskManagementDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#RiskManagementDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/RiskManagementDetails" xlink:type="extended" id="i84f19a47665147b0b4f7b2b5fd1d4929_RiskManagementDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_5dc19573-87d9-4f0f-ab68-1210bc16ea46" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtPercentageBearingVariableInterestAmount_2519e6e3-d20f-4504-8766-7e06dd8afcb9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtPercentageBearingVariableInterestAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5dc19573-87d9-4f0f-ab68-1210bc16ea46" xlink:to="loc_us-gaap_LongtermDebtPercentageBearingVariableInterestAmount_2519e6e3-d20f-4504-8766-7e06dd8afcb9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_54f1854d-69bc-4abf-8542-664248d2081d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtWeightedAverageInterestRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5dc19573-87d9-4f0f-ab68-1210bc16ea46" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_54f1854d-69bc-4abf-8542-664248d2081d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_f2f38994-af3c-4c01-890e-6763921566ab" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5dc19573-87d9-4f0f-ab68-1210bc16ea46" xlink:to="loc_us-gaap_DebtInstrumentTable_f2f38994-af3c-4c01-890e-6763921566ab" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8d77c944-85eb-4e03-972a-ed05446da483" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_f2f38994-af3c-4c01-890e-6763921566ab" xlink:to="loc_dei_LegalEntityAxis_8d77c944-85eb-4e03-972a-ed05446da483" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8d77c944-85eb-4e03-972a-ed05446da483_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8d77c944-85eb-4e03-972a-ed05446da483" xlink:to="loc_dei_EntityDomain_8d77c944-85eb-4e03-972a-ed05446da483_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_414fc2e5-79b3-4964-b82f-705cbe31d7a2" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8d77c944-85eb-4e03-972a-ed05446da483" xlink:to="loc_dei_EntityDomain_414fc2e5-79b3-4964-b82f-705cbe31d7a2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_2daebb5a-37f4-4187-9940-8dcda1566c61" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_414fc2e5-79b3-4964-b82f-705cbe31d7a2" xlink:to="loc_aal_AmericanAirlinesIncMember_2daebb5a-37f4-4187-9940-8dcda1566c61" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_f5a17790-d243-48de-81e5-4239fbac30af" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_f2f38994-af3c-4c01-890e-6763921566ab" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_f5a17790-d243-48de-81e5-4239fbac30af" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_f5a17790-d243-48de-81e5-4239fbac30af_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_f5a17790-d243-48de-81e5-4239fbac30af" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_f5a17790-d243-48de-81e5-4239fbac30af_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4df99edf-2255-4f01-accf-c7c55f3e687e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_f5a17790-d243-48de-81e5-4239fbac30af" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4df99edf-2255-4f01-accf-c7c55f3e687e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_VariableRateDebtMember_736ec8df-36c7-4cc8-b5fb-9eee9afc367b" xlink:href="aal-20211231.xsd#aal_VariableRateDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_4df99edf-2255-4f01-accf-c7c55f3e687e" xlink:to="loc_aal_VariableRateDebtMember_736ec8df-36c7-4cc8-b5fb-9eee9afc367b" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/FairValueMeasurementsandOtherInvestments" xlink:type="simple" xlink:href="aal-20211231.xsd#FairValueMeasurementsandOtherInvestments"/>
<link:definitionLink xlink:role="http://www.aa.com/role/FairValueMeasurementsandOtherInvestments" xlink:type="extended" id="if6c8162750ee42a6a8bfae5089a1087d_FairValueMeasurementsandOtherInvestments">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a7a5fc79-1a35-408c-af37-3b85ca055c26" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosuresTextBlock_946bc9fc-1cea-4e9d-a8c6-e1022657f0a0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a7a5fc79-1a35-408c-af37-3b85ca055c26" xlink:to="loc_us-gaap_FairValueDisclosuresTextBlock_946bc9fc-1cea-4e9d-a8c6-e1022657f0a0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3a49aafa-635e-47d2-8d90-fcbc0ead52d8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_a7a5fc79-1a35-408c-af37-3b85ca055c26" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3a49aafa-635e-47d2-8d90-fcbc0ead52d8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_00ace274-7622-4557-94e4-3eb331dcff3c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_3a49aafa-635e-47d2-8d90-fcbc0ead52d8" xlink:to="loc_dei_LegalEntityAxis_00ace274-7622-4557-94e4-3eb331dcff3c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_00ace274-7622-4557-94e4-3eb331dcff3c_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_00ace274-7622-4557-94e4-3eb331dcff3c" xlink:to="loc_dei_EntityDomain_00ace274-7622-4557-94e4-3eb331dcff3c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a304d29b-0ee5-4193-9003-6c34255c13b4" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_00ace274-7622-4557-94e4-3eb331dcff3c" xlink:to="loc_dei_EntityDomain_a304d29b-0ee5-4193-9003-6c34255c13b4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_9ef25f56-5c68-4979-9cb2-f978a2b4fd48" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a304d29b-0ee5-4193-9003-6c34255c13b4" xlink:to="loc_aal_AmericanAirlinesIncMember_9ef25f56-5c68-4979-9cb2-f978a2b4fd48" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/FairValueMeasurementsandOtherInvestmentsTables" xlink:type="simple" xlink:href="aal-20211231.xsd#FairValueMeasurementsandOtherInvestmentsTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/FairValueMeasurementsandOtherInvestmentsTables" xlink:type="extended" id="i6367244445de46dfbc1f6f6aa058ecaf_FairValueMeasurementsandOtherInvestmentsTables">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b30fcd1f-e6a0-4f61-a490-81507045af2d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock_44aef5fb-1d3b-497a-a374-27aa2109d7dd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b30fcd1f-e6a0-4f61-a490-81507045af2d" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock_44aef5fb-1d3b-497a-a374-27aa2109d7dd" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_a8270fe8-bf1f-4882-ba7b-afb1823ddbd3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b30fcd1f-e6a0-4f61-a490-81507045af2d" xlink:to="loc_us-gaap_ScheduleOfCarryingValuesAndEstimatedFairValuesOfDebtInstrumentsTableTextBlock_a8270fe8-bf1f-4882-ba7b-afb1823ddbd3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a123c82a-4db6-4ab3-ad40-5942215b4564" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b30fcd1f-e6a0-4f61-a490-81507045af2d" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a123c82a-4db6-4ab3-ad40-5942215b4564" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_09a08750-b0aa-4172-9119-e4757481310a" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a123c82a-4db6-4ab3-ad40-5942215b4564" xlink:to="loc_dei_LegalEntityAxis_09a08750-b0aa-4172-9119-e4757481310a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_09a08750-b0aa-4172-9119-e4757481310a_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_09a08750-b0aa-4172-9119-e4757481310a" xlink:to="loc_dei_EntityDomain_09a08750-b0aa-4172-9119-e4757481310a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b108afde-1301-4154-ac06-296bf54005c7" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_09a08750-b0aa-4172-9119-e4757481310a" xlink:to="loc_dei_EntityDomain_b108afde-1301-4154-ac06-296bf54005c7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_cdadb1e7-1093-4de5-95ed-4d371fb83a30" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b108afde-1301-4154-ac06-296bf54005c7" xlink:to="loc_aal_AmericanAirlinesIncMember_cdadb1e7-1093-4de5-95ed-4d371fb83a30" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/FairValueMeasurementsandOtherInvestmentsSummaryofAssetsMeasuredatFairValueonRecurringBasisDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#FairValueMeasurementsandOtherInvestmentsSummaryofAssetsMeasuredatFairValueonRecurringBasisDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/FairValueMeasurementsandOtherInvestmentsSummaryofAssetsMeasuredatFairValueonRecurringBasisDetails" xlink:type="extended" id="i2b408b60128f400a91ff7cd1ab53d316_FairValueMeasurementsandOtherInvestmentsSummaryofAssetsMeasuredatFairValueonRecurringBasisDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f9c46c74-be36-4afb-a55d-078a26c54603" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_f1a7a6df-2b23-4ba6-a82e-5cffa17e1e82" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f9c46c74-be36-4afb-a55d-078a26c54603" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent_f1a7a6df-2b23-4ba6-a82e-5cffa17e1e82" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RestrictedCashAndCashEquivalentsAndShorttermInvestmentsFairValueDisclosure_df10bf52-9b2d-4e49-ab6a-0a3ae85a9b96" xlink:href="aal-20211231.xsd#aal_RestrictedCashAndCashEquivalentsAndShorttermInvestmentsFairValueDisclosure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f9c46c74-be36-4afb-a55d-078a26c54603" xlink:to="loc_aal_RestrictedCashAndCashEquivalentsAndShorttermInvestmentsFairValueDisclosure_df10bf52-9b2d-4e49-ab6a-0a3ae85a9b96" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_6c780024-1975-419c-a800-b678ce017d1b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNi"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f9c46c74-be36-4afb-a55d-078a26c54603" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_6c780024-1975-419c-a800-b678ce017d1b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_ba9dba74-3f75-498c-9d81-fbca1e6113cc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsFairValueDisclosure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f9c46c74-be36-4afb-a55d-078a26c54603" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_ba9dba74-3f75-498c-9d81-fbca1e6113cc" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8d2ff634-b38b-45ca-917f-e724c1c0819c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_f9c46c74-be36-4afb-a55d-078a26c54603" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8d2ff634-b38b-45ca-917f-e724c1c0819c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_4e5b558f-dc9d-4924-9624-43e13e545f16" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8d2ff634-b38b-45ca-917f-e724c1c0819c" xlink:to="loc_dei_LegalEntityAxis_4e5b558f-dc9d-4924-9624-43e13e545f16" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4e5b558f-dc9d-4924-9624-43e13e545f16_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_4e5b558f-dc9d-4924-9624-43e13e545f16" xlink:to="loc_dei_EntityDomain_4e5b558f-dc9d-4924-9624-43e13e545f16_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fe367ca1-66e6-4180-a42b-35e92d851a11" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_4e5b558f-dc9d-4924-9624-43e13e545f16" xlink:to="loc_dei_EntityDomain_fe367ca1-66e6-4180-a42b-35e92d851a11" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_5683a3a4-ef85-4af7-bd42-ff55eaa1a8a5" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fe367ca1-66e6-4180-a42b-35e92d851a11" xlink:to="loc_aal_AmericanAirlinesIncMember_5683a3a4-ef85-4af7-bd42-ff55eaa1a8a5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_d249b678-b865-4a26-bb7a-59be67edfddc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8d2ff634-b38b-45ca-917f-e724c1c0819c" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_d249b678-b865-4a26-bb7a-59be67edfddc" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_d249b678-b865-4a26-bb7a-59be67edfddc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_d249b678-b865-4a26-bb7a-59be67edfddc" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_d249b678-b865-4a26-bb7a-59be67edfddc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_7652fed2-56f8-4c99-b25c-15fad4a12fea" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_d249b678-b865-4a26-bb7a-59be67edfddc" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_7652fed2-56f8-4c99-b25c-15fad4a12fea" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_afa40248-555c-42eb-94c0-33bf59392a2b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_7652fed2-56f8-4c99-b25c-15fad4a12fea" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_afa40248-555c-42eb-94c0-33bf59392a2b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_a7c0eca4-9d58-4038-bf54-f79c4cad2bca" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FinancialInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8d2ff634-b38b-45ca-917f-e724c1c0819c" xlink:to="loc_us-gaap_FinancialInstrumentAxis_a7c0eca4-9d58-4038-bf54-f79c4cad2bca" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a7c0eca4-9d58-4038-bf54-f79c4cad2bca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_a7c0eca4-9d58-4038-bf54-f79c4cad2bca" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_a7c0eca4-9d58-4038-bf54-f79c4cad2bca_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8e431447-0867-4f4a-9392-ce99f6174492" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_a7c0eca4-9d58-4038-bf54-f79c4cad2bca" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8e431447-0867-4f4a-9392-ce99f6174492" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_22ad857b-3540-4214-a271-0e6f90ad45c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MoneyMarketFundsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8e431447-0867-4f4a-9392-ce99f6174492" xlink:to="loc_us-gaap_MoneyMarketFundsMember_22ad857b-3540-4214-a271-0e6f90ad45c3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_7e9c0e91-55b0-44bb-8631-a7c8affa3fbe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8e431447-0867-4f4a-9392-ce99f6174492" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_7e9c0e91-55b0-44bb-8631-a7c8affa3fbe" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_BankTimeDepositsMember_336b3910-3a8b-4908-ba2a-03c9c7880826" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BankTimeDepositsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8e431447-0867-4f4a-9392-ce99f6174492" xlink:to="loc_us-gaap_BankTimeDepositsMember_336b3910-3a8b-4908-ba2a-03c9c7880826" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepurchaseAgreementsMember_7dfaaa57-0504-4167-9834-86a44890a8e1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepurchaseAgreementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_8e431447-0867-4f4a-9392-ce99f6174492" xlink:to="loc_us-gaap_RepurchaseAgreementsMember_7dfaaa57-0504-4167-9834-86a44890a8e1" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a71fbc97-31b9-40ac-885d-0845940a4534" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_8d2ff634-b38b-45ca-917f-e724c1c0819c" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a71fbc97-31b9-40ac-885d-0845940a4534" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a71fbc97-31b9-40ac-885d-0845940a4534_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a71fbc97-31b9-40ac-885d-0845940a4534" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_a71fbc97-31b9-40ac-885d-0845940a4534_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5fad1e7c-3d0a-4c0b-8457-7af400163f3c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_a71fbc97-31b9-40ac-885d-0845940a4534" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5fad1e7c-3d0a-4c0b-8457-7af400163f3c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_d11193ba-f80c-4cc8-bfd6-ffbf3e52cd62" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5fad1e7c-3d0a-4c0b-8457-7af400163f3c" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_d11193ba-f80c-4cc8-bfd6-ffbf3e52cd62" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_c8af0883-96de-4b9a-b864-185de7336f87" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5fad1e7c-3d0a-4c0b-8457-7af400163f3c" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_c8af0883-96de-4b9a-b864-185de7336f87" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_c581cfcb-744c-4f12-9ffa-37974854e774" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5fad1e7c-3d0a-4c0b-8457-7af400163f3c" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_c581cfcb-744c-4f12-9ffa-37974854e774" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/FairValueMeasurementsandOtherInvestmentsScheduleofCarryingValueandEstimatedFairValueofLongTermDebtIncludingCurrentMaturitiesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#FairValueMeasurementsandOtherInvestmentsScheduleofCarryingValueandEstimatedFairValueofLongTermDebtIncludingCurrentMaturitiesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/FairValueMeasurementsandOtherInvestmentsScheduleofCarryingValueandEstimatedFairValueofLongTermDebtIncludingCurrentMaturitiesDetails" xlink:type="extended" id="iba5d048ff14643f49958597c66a3995c_FairValueMeasurementsandOtherInvestmentsScheduleofCarryingValueandEstimatedFairValueofLongTermDebtIncludingCurrentMaturitiesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_61d5dc7d-bdf6-4b90-b9c2-a459a53946c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_89271bfb-8d0b-4675-ba8d-98f2236f5a8f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_61d5dc7d-bdf6-4b90-b9c2-a459a53946c3" xlink:to="loc_us-gaap_LongTermDebtFairValue_89271bfb-8d0b-4675-ba8d-98f2236f5a8f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_272fd6c7-50b3-484b-ba7c-df6f786e1144" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_61d5dc7d-bdf6-4b90-b9c2-a459a53946c3" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_272fd6c7-50b3-484b-ba7c-df6f786e1144" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_b1ca6e5d-e7ef-4fe2-b912-89a16d664305" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_272fd6c7-50b3-484b-ba7c-df6f786e1144" xlink:to="loc_dei_LegalEntityAxis_b1ca6e5d-e7ef-4fe2-b912-89a16d664305" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b1ca6e5d-e7ef-4fe2-b912-89a16d664305_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_b1ca6e5d-e7ef-4fe2-b912-89a16d664305" xlink:to="loc_dei_EntityDomain_b1ca6e5d-e7ef-4fe2-b912-89a16d664305_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e163b932-9058-4d1a-a21c-170a574d71fe" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_b1ca6e5d-e7ef-4fe2-b912-89a16d664305" xlink:to="loc_dei_EntityDomain_e163b932-9058-4d1a-a21c-170a574d71fe" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_966aa6c8-bf1e-4996-bb7b-04d97b5fb316" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e163b932-9058-4d1a-a21c-170a574d71fe" xlink:to="loc_aal_AmericanAirlinesIncMember_966aa6c8-bf1e-4996-bb7b-04d97b5fb316" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_8cde517e-5cd6-4e32-8474-a8a4c8ee5ef1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_272fd6c7-50b3-484b-ba7c-df6f786e1144" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_8cde517e-5cd6-4e32-8474-a8a4c8ee5ef1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_8cde517e-5cd6-4e32-8474-a8a4c8ee5ef1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_8cde517e-5cd6-4e32-8474-a8a4c8ee5ef1" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_8cde517e-5cd6-4e32-8474-a8a4c8ee5ef1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_53e3c7bb-1e09-4f7a-bda3-a82e99fefcc5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_8cde517e-5cd6-4e32-8474-a8a4c8ee5ef1" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_53e3c7bb-1e09-4f7a-bda3-a82e99fefcc5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_867a6aca-212e-46b4-b7eb-1656947a2096" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_53e3c7bb-1e09-4f7a-bda3-a82e99fefcc5" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_867a6aca-212e-46b4-b7eb-1656947a2096" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_bcb5c48a-dc87-48fb-93a8-ed7c4e23b19c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_867a6aca-212e-46b4-b7eb-1656947a2096" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_bcb5c48a-dc87-48fb-93a8-ed7c4e23b19c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_0957e5f2-ad8b-41a9-9905-1c459adcac70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_867a6aca-212e-46b4-b7eb-1656947a2096" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_0957e5f2-ad8b-41a9-9905-1c459adcac70" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c5988170-b9e7-427b-933d-7694f9a1928e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_272fd6c7-50b3-484b-ba7c-df6f786e1144" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c5988170-b9e7-427b-933d-7694f9a1928e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c5988170-b9e7-427b-933d-7694f9a1928e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c5988170-b9e7-427b-933d-7694f9a1928e" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c5988170-b9e7-427b-933d-7694f9a1928e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_cae60504-4df6-45c4-8f5b-749feef3ba29" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c5988170-b9e7-427b-933d-7694f9a1928e" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_cae60504-4df6-45c4-8f5b-749feef3ba29" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_287ceb39-cca5-4840-9315-14b1322febef" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_cae60504-4df6-45c4-8f5b-749feef3ba29" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_287ceb39-cca5-4840-9315-14b1322febef" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_edf4668f-132e-46ca-a562-17f38960b79e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_cae60504-4df6-45c4-8f5b-749feef3ba29" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_edf4668f-132e-46ca-a562-17f38960b79e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_82f32ded-c6dc-4425-9ad7-475930bcdf64" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_272fd6c7-50b3-484b-ba7c-df6f786e1144" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_82f32ded-c6dc-4425-9ad7-475930bcdf64" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_82f32ded-c6dc-4425-9ad7-475930bcdf64_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_82f32ded-c6dc-4425-9ad7-475930bcdf64" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_82f32ded-c6dc-4425-9ad7-475930bcdf64_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_7c7329cc-e0f8-4227-b082-d4e2253ed507" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_82f32ded-c6dc-4425-9ad7-475930bcdf64" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_7c7329cc-e0f8-4227-b082-d4e2253ed507" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConvertibleDebtMember_9421e575-9b4a-487b-a3d4-bffd979934d0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ConvertibleDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_7c7329cc-e0f8-4227-b082-d4e2253ed507" xlink:to="loc_us-gaap_ConvertibleDebtMember_9421e575-9b4a-487b-a3d4-bffd979934d0" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/FairValueMeasurementsandOtherInvestmentsOtherInvestmentsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#FairValueMeasurementsandOtherInvestmentsOtherInvestmentsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/FairValueMeasurementsandOtherInvestmentsOtherInvestmentsDetails" xlink:type="extended" id="ibc52f01e52364ed6a652a90fc3fbf274_FairValueMeasurementsandOtherInvestmentsOtherInvestmentsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_6832ed4d-b042-48a2-8f74-861b9fabe1d6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_6832ed4d-b042-48a2-8f74-861b9fabe1d6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EquitySecuritiesFVNIOwnershipPercentage_333a64f6-3672-4e6e-a2bc-9b468220d044" xlink:href="aal-20211231.xsd#aal_EquitySecuritiesFVNIOwnershipPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_aal_EquitySecuritiesFVNIOwnershipPercentage_333a64f6-3672-4e6e-a2bc-9b468220d044" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesFvNiCost_7cd4d368-aa44-4824-a38d-e95809965c21" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesFvNiCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_us-gaap_EquitySecuritiesFvNiCost_7cd4d368-aa44-4824-a38d-e95809965c21" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireEquitySecuritiesFvNi_24b9edf7-34e7-424d-8dda-3069a7ea0240" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireEquitySecuritiesFvNi"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_us-gaap_PaymentsToAcquireEquitySecuritiesFvNi_24b9edf7-34e7-424d-8dda-3069a7ea0240" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EquitySecuritiesFVNISharesAcquired_189347a6-fb61-4a7c-b773-214a06a782d9" xlink:href="aal-20211231.xsd#aal_EquitySecuritiesFVNISharesAcquired"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_aal_EquitySecuritiesFVNISharesAcquired_189347a6-fb61-4a7c-b773-214a06a782d9" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LiabilitiesIncurredToAcquireEquitySecurities_e54cdbb3-3ae4-43bf-b21f-1be349ddaaff" xlink:href="aal-20211231.xsd#aal_LiabilitiesIncurredToAcquireEquitySecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_aal_LiabilitiesIncurredToAcquireEquitySecurities_e54cdbb3-3ae4-43bf-b21f-1be349ddaaff" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftAgreedToPreOrder_f1a176a2-ce9e-4aaa-80af-f1a30beea530" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftAgreedToPreOrder"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_aal_NumberOfAircraftAgreedToPreOrder_f1a176a2-ce9e-4aaa-80af-f1a30beea530" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PurchaseOptionNumberOfAdditionalAircraftWhichCanBeOrdered_a289a48f-d6d2-43e5-9550-02baf08179e9" xlink:href="aal-20211231.xsd#aal_PurchaseOptionNumberOfAdditionalAircraftWhichCanBeOrdered"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_aal_PurchaseOptionNumberOfAdditionalAircraftWhichCanBeOrdered_a289a48f-d6d2-43e5-9550-02baf08179e9" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsToBeIssuedInInstallments_c376cb1a-f8e5-4f7a-a6a2-f5c360562072" xlink:href="aal-20211231.xsd#aal_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsToBeIssuedInInstallments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_aal_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsToBeIssuedInInstallments_c376cb1a-f8e5-4f7a-a6a2-f5c360562072" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_a387b25d-3ea2-4229-b253-333bbad7c5b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_a387b25d-3ea2-4229-b253-333bbad7c5b5" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ClassOfWarrantOrRightEligibilityToExerciseThresholdAircraftOrderSize_82c21562-78da-4d54-a146-4382aeba79b4" xlink:href="aal-20211231.xsd#aal_ClassOfWarrantOrRightEligibilityToExerciseThresholdAircraftOrderSize"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_aal_ClassOfWarrantOrRightEligibilityToExerciseThresholdAircraftOrderSize_82c21562-78da-4d54-a146-4382aeba79b4" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ClassOfWarrantOrRightMaximumAggregatedNumberOfSecuritiesCalledByWarrantsOrRightsToBeIssued_485fb83d-2cd7-4706-9911-d659c9cbc0ad" xlink:href="aal-20211231.xsd#aal_ClassOfWarrantOrRightMaximumAggregatedNumberOfSecuritiesCalledByWarrantsOrRightsToBeIssued"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_aal_ClassOfWarrantOrRightMaximumAggregatedNumberOfSecuritiesCalledByWarrantsOrRightsToBeIssued_485fb83d-2cd7-4706-9911-d659c9cbc0ad" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d57db52e-54eb-4d9b-bde2-3ea1fe9de66b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_22e52f92-6e37-44f0-b010-90855a1fcacf" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d57db52e-54eb-4d9b-bde2-3ea1fe9de66b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_b6072a80-6c25-4508-8ed7-459d1b1bd643" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d57db52e-54eb-4d9b-bde2-3ea1fe9de66b" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_b6072a80-6c25-4508-8ed7-459d1b1bd643" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_b6072a80-6c25-4508-8ed7-459d1b1bd643_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_b6072a80-6c25-4508-8ed7-459d1b1bd643" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_b6072a80-6c25-4508-8ed7-459d1b1bd643_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_4bb5a590-6f16-4520-aa0b-21570870d4b1" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_EquityMethodInvesteeNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_b6072a80-6c25-4508-8ed7-459d1b1bd643" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_4bb5a590-6f16-4520-aa0b-21570870d4b1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RepublicAirlineIncMember_2955487d-9c40-47ff-a6e2-461ac162614c" xlink:href="aal-20211231.xsd#aal_RepublicAirlineIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_4bb5a590-6f16-4520-aa0b-21570870d4b1" xlink:to="loc_aal_RepublicAirlineIncMember_2955487d-9c40-47ff-a6e2-461ac162614c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_f2bb734f-edfb-4ac5-a7db-8794910c62ed" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d57db52e-54eb-4d9b-bde2-3ea1fe9de66b" xlink:to="loc_dei_LegalEntityAxis_f2bb734f-edfb-4ac5-a7db-8794910c62ed" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f2bb734f-edfb-4ac5-a7db-8794910c62ed_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_f2bb734f-edfb-4ac5-a7db-8794910c62ed" xlink:to="loc_dei_EntityDomain_f2bb734f-edfb-4ac5-a7db-8794910c62ed_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e8a812de-8cbb-4786-97d0-022d3f27f5ca" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_f2bb734f-edfb-4ac5-a7db-8794910c62ed" xlink:to="loc_dei_EntityDomain_e8a812de-8cbb-4786-97d0-022d3f27f5ca" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_b6e2a18b-3673-4eb2-8acf-17be0262bc4f" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e8a812de-8cbb-4786-97d0-022d3f27f5ca" xlink:to="loc_aal_AmericanAirlinesIncMember_b6e2a18b-3673-4eb2-8acf-17be0262bc4f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_52035b4f-11df-4ded-a088-ee733cd70bd5" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_OwnershipAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_d57db52e-54eb-4d9b-bde2-3ea1fe9de66b" xlink:to="loc_srt_OwnershipAxis_52035b4f-11df-4ded-a088-ee733cd70bd5" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_52035b4f-11df-4ded-a088-ee733cd70bd5_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_OwnershipDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_52035b4f-11df-4ded-a088-ee733cd70bd5" xlink:to="loc_srt_OwnershipDomain_52035b4f-11df-4ded-a088-ee733cd70bd5_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_7c9a6178-10fe-4c00-9fd1-64826cf95cc7" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_OwnershipDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_52035b4f-11df-4ded-a088-ee733cd70bd5" xlink:to="loc_srt_OwnershipDomain_7c9a6178-10fe-4c00-9fd1-64826cf95cc7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ChinaSouthernAirlinesCompanyLimitedMember_6e32dfb6-011b-4ce3-9249-88c497cbd7db" xlink:href="aal-20211231.xsd#aal_ChinaSouthernAirlinesCompanyLimitedMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_7c9a6178-10fe-4c00-9fd1-64826cf95cc7" xlink:to="loc_aal_ChinaSouthernAirlinesCompanyLimitedMember_6e32dfb6-011b-4ce3-9249-88c497cbd7db" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_VerticalAerospaceLtdMember_eab43c58-1033-4176-95a6-aecb6ad2db90" xlink:href="aal-20211231.xsd#aal_VerticalAerospaceLtdMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_7c9a6178-10fe-4c00-9fd1-64826cf95cc7" xlink:to="loc_aal_VerticalAerospaceLtdMember_eab43c58-1033-4176-95a6-aecb6ad2db90" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlans" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlans"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlans" xlink:type="extended" id="i2fefe5b660fb47b6b5e0dd7d7262fe1a_EmployeeBenefitPlans">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_aa53fa2e-aebd-4ee8-afbd-81455ce83305" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_2f2622de-6a51-4617-9afa-b2e4405b119b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_aa53fa2e-aebd-4ee8-afbd-81455ce83305" xlink:to="loc_us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_2f2622de-6a51-4617-9afa-b2e4405b119b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4a92046e-d000-4bfe-9b34-99f6720a7a17" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_aa53fa2e-aebd-4ee8-afbd-81455ce83305" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4a92046e-d000-4bfe-9b34-99f6720a7a17" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_276cc48c-454d-4357-8bc2-bd907aa6c1cd" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_4a92046e-d000-4bfe-9b34-99f6720a7a17" xlink:to="loc_dei_LegalEntityAxis_276cc48c-454d-4357-8bc2-bd907aa6c1cd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_276cc48c-454d-4357-8bc2-bd907aa6c1cd_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_276cc48c-454d-4357-8bc2-bd907aa6c1cd" xlink:to="loc_dei_EntityDomain_276cc48c-454d-4357-8bc2-bd907aa6c1cd_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fb6a1734-29e1-4c2f-9e8c-dd5c03e59319" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_276cc48c-454d-4357-8bc2-bd907aa6c1cd" xlink:to="loc_dei_EntityDomain_fb6a1734-29e1-4c2f-9e8c-dd5c03e59319" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_a29d2663-b12b-43fa-a6df-d1ff7d735b80" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fb6a1734-29e1-4c2f-9e8c-dd5c03e59319" xlink:to="loc_aal_AmericanAirlinesIncMember_a29d2663-b12b-43fa-a6df-d1ff7d735b80" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansTables" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansTables" xlink:type="extended" id="i81d9acceb6f3445f8b5e7ea5d1f194ac_EmployeeBenefitPlansTables">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock_822bedf1-bf21-4670-a037-8d2437b00c9e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ChangesInProjectedBenefitObligationsFairValueOfPlanAssetsAndFundedStatusOfPlanTableTextBlock_822bedf1-bf21-4670-a037-8d2437b00c9e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock_71e5809c-e113-4acb-a9c3-688f9e255edb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ScheduleOfAmountsRecognizedInBalanceSheetTableTextBlock_71e5809c-e113-4acb-a9c3-688f9e255edb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_5c71ce55-b936-410b-ab77-0c1806848691" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_5c71ce55-b936-410b-ab77-0c1806848691" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock_54b40079-45b3-48d5-96a3-b533a169a7c4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock_54b40079-45b3-48d5-96a3-b533a169a7c4" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_2a964c76-900c-4648-8477-1aae8ad1253e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfNetBenefitCostsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_2a964c76-900c-4648-8477-1aae8ad1253e" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_dc276ce0-49b5-421c-b16e-4bbce8cfecd8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAssumptionsUsedTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_dc276ce0-49b5-421c-b16e-4bbce8cfecd8" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock_3ced9d3a-37eb-427b-9cc4-071a96e75bbe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock_3ced9d3a-37eb-427b-9cc4-071a96e75bbe" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock_eebf5f17-a79e-4016-a42a-18aed0890cd8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock_eebf5f17-a79e-4016-a42a-18aed0890cd8" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEffectOfSignificantUnobservableInputsChangesInPlanAssetsTableTextBlock_2e5452f5-1fd4-4a0d-90fd-5bbfa3e5805c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfEffectOfSignificantUnobservableInputsChangesInPlanAssetsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ScheduleOfEffectOfSignificantUnobservableInputsChangesInPlanAssetsTableTextBlock_2e5452f5-1fd4-4a0d-90fd-5bbfa3e5805c" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9daa60b3-c30a-466a-bb43-3421d363d280" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_44b16692-5a51-473d-a8fd-2af5be9d1b8c" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9daa60b3-c30a-466a-bb43-3421d363d280" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_5c7b5b1d-9609-4075-bec1-8bf481239304" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9daa60b3-c30a-466a-bb43-3421d363d280" xlink:to="loc_dei_LegalEntityAxis_5c7b5b1d-9609-4075-bec1-8bf481239304" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5c7b5b1d-9609-4075-bec1-8bf481239304_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_5c7b5b1d-9609-4075-bec1-8bf481239304" xlink:to="loc_dei_EntityDomain_5c7b5b1d-9609-4075-bec1-8bf481239304_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_79fe88a5-291f-43ff-a53d-51fb282355aa" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_5c7b5b1d-9609-4075-bec1-8bf481239304" xlink:to="loc_dei_EntityDomain_79fe88a5-291f-43ff-a53d-51fb282355aa" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_00e66b27-fa12-4419-86b3-3bdc5c58f72b" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_79fe88a5-291f-43ff-a53d-51fb282355aa" xlink:to="loc_aal_AmericanAirlinesIncMember_00e66b27-fa12-4419-86b3-3bdc5c58f72b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_547f6abb-659d-4ec4-8340-bf4716ae66e1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9daa60b3-c30a-466a-bb43-3421d363d280" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_547f6abb-659d-4ec4-8340-bf4716ae66e1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_547f6abb-659d-4ec4-8340-bf4716ae66e1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_547f6abb-659d-4ec4-8340-bf4716ae66e1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_547f6abb-659d-4ec4-8340-bf4716ae66e1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_8981eb6a-0818-4cb4-a616-1dccd79d7229" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_547f6abb-659d-4ec4-8340-bf4716ae66e1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_8981eb6a-0818-4cb4-a616-1dccd79d7229" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_9f85c255-c705-419b-97a9-0cdd18853188" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_8981eb6a-0818-4cb4-a616-1dccd79d7229" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_9f85c255-c705-419b-97a9-0cdd18853188" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_180cb84f-40d4-4061-b05f-3ca34720dc13" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_8981eb6a-0818-4cb4-a616-1dccd79d7229" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_180cb84f-40d4-4061-b05f-3ca34720dc13" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansAdditionalInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansAdditionalInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansAdditionalInformationDetails" xlink:type="extended" id="iafbdaf9e20344c58ba425db0cd2ea40d_EmployeeBenefitPlansAdditionalInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_faeb9b8d-8f07-4d46-9657-f63374f36402" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAmendments_8981ff8a-da3d-4054-8804-ec45ba8f2e92" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAmendments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_faeb9b8d-8f07-4d46-9657-f63374f36402" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAmendments_8981ff8a-da3d-4054-8804-ec45ba8f2e92" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanAssumptionsUsedInCalculationAverageRemainingLifeExpectancyOfRetirees_db23fef9-bb6d-422b-8548-be1d050e8d9e" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanAssumptionsUsedInCalculationAverageRemainingLifeExpectancyOfRetirees"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_faeb9b8d-8f07-4d46-9657-f63374f36402" xlink:to="loc_aal_DefinedBenefitPlanAssumptionsUsedInCalculationAverageRemainingLifeExpectancyOfRetirees_db23fef9-bb6d-422b-8548-be1d050e8d9e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax_b5ab0203-4e1e-41bb-92a6-c4622a46412c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_faeb9b8d-8f07-4d46-9657-f63374f36402" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax_b5ab0203-4e1e-41bb-92a6-c4622a46412c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_565313b0-0ace-4a11-9a26-83a2620f588e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_faeb9b8d-8f07-4d46-9657-f63374f36402" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_565313b0-0ace-4a11-9a26-83a2620f588e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e74001bc-f5f4-46f0-aa03-c4a9f4895548" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_565313b0-0ace-4a11-9a26-83a2620f588e" xlink:to="loc_dei_LegalEntityAxis_e74001bc-f5f4-46f0-aa03-c4a9f4895548" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e74001bc-f5f4-46f0-aa03-c4a9f4895548_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e74001bc-f5f4-46f0-aa03-c4a9f4895548" xlink:to="loc_dei_EntityDomain_e74001bc-f5f4-46f0-aa03-c4a9f4895548_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2bdab8dc-f1a5-4a92-8c76-49e2dd5eadc2" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e74001bc-f5f4-46f0-aa03-c4a9f4895548" xlink:to="loc_dei_EntityDomain_2bdab8dc-f1a5-4a92-8c76-49e2dd5eadc2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_2be30804-60a5-4da8-9511-32183e0c965b" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2bdab8dc-f1a5-4a92-8c76-49e2dd5eadc2" xlink:to="loc_aal_AmericanAirlinesIncMember_2be30804-60a5-4da8-9511-32183e0c965b" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofChangesinProjectedBenefitObligationsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofChangesinProjectedBenefitObligationsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofChangesinProjectedBenefitObligationsDetails" xlink:type="extended" id="i1f0b40879a0442268a03b1166daf76d5_EmployeeBenefitPlansScheduleofChangesinProjectedBenefitObligationsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_c2bbd3fe-82e9-404f-8f5c-69086a3ce6d5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_c2bbd3fe-82e9-404f-8f5c-69086a3ce6d5" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_28415bc3-56ba-4aac-b75c-f78c388fe350" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_28415bc3-56ba-4aac-b75c-f78c388fe350" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_580ed763-35ec-47db-8cb8-68c7de1ae19c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_580ed763-35ec-47db-8cb8-68c7de1ae19c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_8e91a560-7dcf-499d-9a09-ec59167f7edf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_8e91a560-7dcf-499d-9a09-ec59167f7edf" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_419f1991-f5e0-4190-9646-2dc0af8773f7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_419f1991-f5e0-4190-9646-2dc0af8773f7" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_88216ac3-b0c9-4312-838f-3bde2c499b31" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_88216ac3-b0c9-4312-838f-3bde2c499b31" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAmendments_cb2a66df-177f-4a93-bad4-6e26caa433fc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAmendments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAmendments_cb2a66df-177f-4a93-bad4-6e26caa433fc" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement_01cab261-bf5c-4d87-a866-043dc10ecc37" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement_01cab261-bf5c-4d87-a866-043dc10ecc37" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_3fb1cb93-d06c-405f-8a08-15a6caa4d993" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_cf1ac135-0c7a-4ef3-b991-021487390196" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_3fb1cb93-d06c-405f-8a08-15a6caa4d993" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_d5126860-ec08-43dd-92c0-243c96b8a750" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a043f592-9691-4c01-8e85-abc2afa68776" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_c2bbd3fe-82e9-404f-8f5c-69086a3ce6d5" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a043f592-9691-4c01-8e85-abc2afa68776" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_cd5ceece-6d1d-4cc3-8012-803672bbd217" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a043f592-9691-4c01-8e85-abc2afa68776" xlink:to="loc_dei_LegalEntityAxis_cd5ceece-6d1d-4cc3-8012-803672bbd217" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_cd5ceece-6d1d-4cc3-8012-803672bbd217_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_cd5ceece-6d1d-4cc3-8012-803672bbd217" xlink:to="loc_dei_EntityDomain_cd5ceece-6d1d-4cc3-8012-803672bbd217_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_74494785-6696-4287-a01e-aac433406586" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_cd5ceece-6d1d-4cc3-8012-803672bbd217" xlink:to="loc_dei_EntityDomain_74494785-6696-4287-a01e-aac433406586" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_3ee4d202-895b-47e9-b28b-262ccaa91125" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_74494785-6696-4287-a01e-aac433406586" xlink:to="loc_aal_AmericanAirlinesIncMember_3ee4d202-895b-47e9-b28b-262ccaa91125" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_01bf3dc9-a2ff-4064-901e-db87ccfd9b1a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a043f592-9691-4c01-8e85-abc2afa68776" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_01bf3dc9-a2ff-4064-901e-db87ccfd9b1a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_01bf3dc9-a2ff-4064-901e-db87ccfd9b1a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_01bf3dc9-a2ff-4064-901e-db87ccfd9b1a" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_01bf3dc9-a2ff-4064-901e-db87ccfd9b1a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_b1150b91-a8ad-4b7a-a59f-733b20dba572" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_01bf3dc9-a2ff-4064-901e-db87ccfd9b1a" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_b1150b91-a8ad-4b7a-a59f-733b20dba572" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_b7cad179-2882-479b-943c-c365c711b00a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_b1150b91-a8ad-4b7a-a59f-733b20dba572" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_b7cad179-2882-479b-943c-c365c711b00a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_dbbfa363-59d7-4181-a532-a97b46193af8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_b1150b91-a8ad-4b7a-a59f-733b20dba572" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_dbbfa363-59d7-4181-a532-a97b46193af8" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofChangesinFairValueofPlanAssetsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofChangesinFairValueofPlanAssetsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofChangesinFairValueofPlanAssetsDetails" xlink:type="extended" id="id01656b8b4c947c082fbe2009829e04a_EmployeeBenefitPlansScheduleofChangesinFairValueofPlanAssetsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b390c620-92eb-4427-896b-41dc52a52234" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_efe8dc12-3b05-423b-ab5c-9954f9066b96" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b390c620-92eb-4427-896b-41dc52a52234" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_efe8dc12-3b05-423b-ab5c-9954f9066b96" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_563925e8-2dbf-4073-8b68-2fda9679f05a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_efe8dc12-3b05-423b-ab5c-9954f9066b96" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_563925e8-2dbf-4073-8b68-2fda9679f05a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_2cc56f22-214f-4600-be27-238cf4275aba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_efe8dc12-3b05-423b-ab5c-9954f9066b96" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_2cc56f22-214f-4600-be27-238cf4275aba" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_c0a6a883-59b2-4961-bb1f-f8d1e549a3d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_efe8dc12-3b05-423b-ab5c-9954f9066b96" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_c0a6a883-59b2-4961-bb1f-f8d1e549a3d4" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_dba7135c-0f24-4c15-a827-cc9eacff863b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanSettlementsPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_efe8dc12-3b05-423b-ab5c-9954f9066b96" xlink:to="loc_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_dba7135c-0f24-4c15-a827-cc9eacff863b" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_01088a6a-116c-4c15-98e6-19b770b5c3b0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_efe8dc12-3b05-423b-ab5c-9954f9066b96" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_01088a6a-116c-4c15-98e6-19b770b5c3b0" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_60f7ebad-d3cf-4d5e-8691-16c92a74eb4a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_7e631b92-68bf-42a1-905d-b19395491e11" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_efe8dc12-3b05-423b-ab5c-9954f9066b96" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_7e631b92-68bf-42a1-905d-b19395491e11" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_3de9cae4-5763-4c93-89ad-d64f20be0ad8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b390c620-92eb-4427-896b-41dc52a52234" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_3de9cae4-5763-4c93-89ad-d64f20be0ad8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanCurtailments_d1ec79cd-a27d-4565-8e76-30632b3be98b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanCurtailments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b390c620-92eb-4427-896b-41dc52a52234" xlink:to="loc_us-gaap_DefinedBenefitPlanCurtailments_d1ec79cd-a27d-4565-8e76-30632b3be98b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanContributionsMadeForPriorYearUnderCARESAct_0d376c38-a48e-4286-84e4-675ae73dbb9e" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanContributionsMadeForPriorYearUnderCARESAct"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b390c620-92eb-4427-896b-41dc52a52234" xlink:to="loc_aal_DefinedBenefitPlanContributionsMadeForPriorYearUnderCARESAct_0d376c38-a48e-4286-84e4-675ae73dbb9e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_881f67d2-dc1a-453c-9abb-d57b033ba450" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_b390c620-92eb-4427-896b-41dc52a52234" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_881f67d2-dc1a-453c-9abb-d57b033ba450" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_49018ef5-4744-4832-a629-364a1f5655cf" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_881f67d2-dc1a-453c-9abb-d57b033ba450" xlink:to="loc_dei_LegalEntityAxis_49018ef5-4744-4832-a629-364a1f5655cf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_49018ef5-4744-4832-a629-364a1f5655cf_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_49018ef5-4744-4832-a629-364a1f5655cf" xlink:to="loc_dei_EntityDomain_49018ef5-4744-4832-a629-364a1f5655cf_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_132aa2d6-c354-40b3-afd2-277d4c13e611" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_49018ef5-4744-4832-a629-364a1f5655cf" xlink:to="loc_dei_EntityDomain_132aa2d6-c354-40b3-afd2-277d4c13e611" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_73aa8391-3db7-464c-bb03-c068e89fac54" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_132aa2d6-c354-40b3-afd2-277d4c13e611" xlink:to="loc_aal_AmericanAirlinesIncMember_73aa8391-3db7-464c-bb03-c068e89fac54" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_e817ab87-6515-4a1b-9b49-5a8a4d031417" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_881f67d2-dc1a-453c-9abb-d57b033ba450" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_e817ab87-6515-4a1b-9b49-5a8a4d031417" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_e817ab87-6515-4a1b-9b49-5a8a4d031417_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_e817ab87-6515-4a1b-9b49-5a8a4d031417" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_e817ab87-6515-4a1b-9b49-5a8a4d031417_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_4768af02-b4a6-451f-b463-cdfef8c52e32" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_e817ab87-6515-4a1b-9b49-5a8a4d031417" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_4768af02-b4a6-451f-b463-cdfef8c52e32" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_1f459098-b1c3-45d0-9ffb-809c50c8229b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_4768af02-b4a6-451f-b463-cdfef8c52e32" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_1f459098-b1c3-45d0-9ffb-809c50c8229b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_ba0fd44e-3c5b-4862-add9-3074a21acc3d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_4768af02-b4a6-451f-b463-cdfef8c52e32" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_ba0fd44e-3c5b-4862-add9-3074a21acc3d" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAmountsRecognizedinConsolidatedBalanceSheetsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofAmountsRecognizedinConsolidatedBalanceSheetsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAmountsRecognizedinConsolidatedBalanceSheetsDetails" xlink:type="extended" id="i9da033dee5a949ffbc5060180166ccd8_EmployeeBenefitPlansScheduleofAmountsRecognizedinConsolidatedBalanceSheetsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9dad5185-7a77-4669-9465-b1050145a48f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_cc77dc12-e6c3-4a56-8e98-b81d3131fb50" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9dad5185-7a77-4669-9465-b1050145a48f" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_cc77dc12-e6c3-4a56-8e98-b81d3131fb50" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_d3ca8528-be5e-402e-ab15-efe5138e7521" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9dad5185-7a77-4669-9465-b1050145a48f" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_d3ca8528-be5e-402e-ab15-efe5138e7521" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent_bd0d6ea7-1ee8-4f25-8b42-536ba2f154b0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9dad5185-7a77-4669-9465-b1050145a48f" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent_bd0d6ea7-1ee8-4f25-8b42-536ba2f154b0" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_f07041bf-85c3-4467-815f-698afa978cfd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9dad5185-7a77-4669-9465-b1050145a48f" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_f07041bf-85c3-4467-815f-698afa978cfd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8afc085b-94d9-4499-b707-d76f9e968727" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_f07041bf-85c3-4467-815f-698afa978cfd" xlink:to="loc_dei_LegalEntityAxis_8afc085b-94d9-4499-b707-d76f9e968727" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8afc085b-94d9-4499-b707-d76f9e968727_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8afc085b-94d9-4499-b707-d76f9e968727" xlink:to="loc_dei_EntityDomain_8afc085b-94d9-4499-b707-d76f9e968727_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c2526c1c-5565-4b84-aa4d-5042cf526e6b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8afc085b-94d9-4499-b707-d76f9e968727" xlink:to="loc_dei_EntityDomain_c2526c1c-5565-4b84-aa4d-5042cf526e6b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_ab934daf-700b-4b53-8f38-1ae0b9d1339c" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_c2526c1c-5565-4b84-aa4d-5042cf526e6b" xlink:to="loc_aal_AmericanAirlinesIncMember_ab934daf-700b-4b53-8f38-1ae0b9d1339c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_df014ff2-8025-470b-94d2-2feafe421055" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_f07041bf-85c3-4467-815f-698afa978cfd" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_df014ff2-8025-470b-94d2-2feafe421055" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_df014ff2-8025-470b-94d2-2feafe421055_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_df014ff2-8025-470b-94d2-2feafe421055" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_df014ff2-8025-470b-94d2-2feafe421055_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_d2a9029c-110a-4012-bd20-994bb2b375ed" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_df014ff2-8025-470b-94d2-2feafe421055" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_d2a9029c-110a-4012-bd20-994bb2b375ed" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_4a2f20ab-e508-4ce9-a598-4784803a4f29" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_d2a9029c-110a-4012-bd20-994bb2b375ed" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_4a2f20ab-e508-4ce9-a598-4784803a4f29" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_e38ea6b6-f875-496e-a310-9337290a30aa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_d2a9029c-110a-4012-bd20-994bb2b375ed" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_e38ea6b6-f875-496e-a310-9337290a30aa" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAmountsRecognizedinOtherComprehensiveIncomeDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofAmountsRecognizedinOtherComprehensiveIncomeDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAmountsRecognizedinOtherComprehensiveIncomeDetails" xlink:type="extended" id="i525b82c1694b4b429be00a33e80276f0_EmployeeBenefitPlansScheduleofAmountsRecognizedinOtherComprehensiveIncomeDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ecc77d6d-09f7-4aa7-88c9-542a5de0a65b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_d704862d-0992-4903-bdf7-b49e3ddab12d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ecc77d6d-09f7-4aa7-88c9-542a5de0a65b" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_d704862d-0992-4903-bdf7-b49e3ddab12d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_7292cd4d-d09e-4d5c-b67f-89f9c6509419" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ecc77d6d-09f7-4aa7-88c9-542a5de0a65b" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_7292cd4d-d09e-4d5c-b67f-89f9c6509419" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_d1ef6960-cbec-4616-a372-3261c4c3658e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ecc77d6d-09f7-4aa7-88c9-542a5de0a65b" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_d1ef6960-cbec-4616-a372-3261c4c3658e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd783bd9-f783-47ff-a891-629a14d46fda" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ecc77d6d-09f7-4aa7-88c9-542a5de0a65b" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd783bd9-f783-47ff-a891-629a14d46fda" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_3022633b-024a-4c6f-9302-b6e2ee1a6360" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd783bd9-f783-47ff-a891-629a14d46fda" xlink:to="loc_dei_LegalEntityAxis_3022633b-024a-4c6f-9302-b6e2ee1a6360" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3022633b-024a-4c6f-9302-b6e2ee1a6360_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_3022633b-024a-4c6f-9302-b6e2ee1a6360" xlink:to="loc_dei_EntityDomain_3022633b-024a-4c6f-9302-b6e2ee1a6360_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_be3af15c-6b77-4001-b309-47e06eca3dfa" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_3022633b-024a-4c6f-9302-b6e2ee1a6360" xlink:to="loc_dei_EntityDomain_be3af15c-6b77-4001-b309-47e06eca3dfa" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_7dbeaea7-4889-48ee-a02a-f707673f7791" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_be3af15c-6b77-4001-b309-47e06eca3dfa" xlink:to="loc_aal_AmericanAirlinesIncMember_7dbeaea7-4889-48ee-a02a-f707673f7791" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_037487c2-c2a8-4746-916f-4347281f23ca" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd783bd9-f783-47ff-a891-629a14d46fda" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_037487c2-c2a8-4746-916f-4347281f23ca" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_037487c2-c2a8-4746-916f-4347281f23ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_037487c2-c2a8-4746-916f-4347281f23ca" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_037487c2-c2a8-4746-916f-4347281f23ca_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_2545f792-bdd2-4839-85b6-03965d6cbe2d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_037487c2-c2a8-4746-916f-4347281f23ca" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_2545f792-bdd2-4839-85b6-03965d6cbe2d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_4e1a5c6c-70fe-43fa-8f27-ab8b735b61bf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_2545f792-bdd2-4839-85b6-03965d6cbe2d" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_4e1a5c6c-70fe-43fa-8f27-ab8b735b61bf" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_849c9d5a-9d5a-41d4-ba58-be03258b422f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_2545f792-bdd2-4839-85b6-03965d6cbe2d" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_849c9d5a-9d5a-41d4-ba58-be03258b422f" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAccumulatedBenefitObligationsExceedingFairValueofPlanAssetsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofAccumulatedBenefitObligationsExceedingFairValueofPlanAssetsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAccumulatedBenefitObligationsExceedingFairValueofPlanAssetsDetails" xlink:type="extended" id="ifdc1693262be4801af50d949a2225ea0_EmployeeBenefitPlansScheduleofAccumulatedBenefitObligationsExceedingFairValueofPlanAssetsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_75d643b5-69e3-4176-8c8b-4069daabd268" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_9399e835-c90c-46ee-a4ec-49e5f9e3e9b6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_75d643b5-69e3-4176-8c8b-4069daabd268" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_9399e835-c90c-46ee-a4ec-49e5f9e3e9b6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_baffbb9a-e018-4d6f-8b50-9c348ada4451" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_75d643b5-69e3-4176-8c8b-4069daabd268" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation_baffbb9a-e018-4d6f-8b50-9c348ada4451" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanPlanwithAccumulatedBenefitObligationinExcessofPlanAssetsAmountInExcessOfPlanAssets_e6cef111-47f7-43a3-a34b-249546996602" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanPlanwithAccumulatedBenefitObligationinExcessofPlanAssetsAmountInExcessOfPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_75d643b5-69e3-4176-8c8b-4069daabd268" xlink:to="loc_aal_DefinedBenefitPlanPlanwithAccumulatedBenefitObligationinExcessofPlanAssetsAmountInExcessOfPlanAssets_e6cef111-47f7-43a3-a34b-249546996602" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_8d16d5b6-91de-43dd-aaa9-48b0ede96e95" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_75d643b5-69e3-4176-8c8b-4069daabd268" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets_8d16d5b6-91de-43dd-aaa9-48b0ede96e95" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9f1dce58-2d14-4873-ba7b-699e2d282e8b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_75d643b5-69e3-4176-8c8b-4069daabd268" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9f1dce58-2d14-4873-ba7b-699e2d282e8b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_d521d7bd-63e2-445d-9ccb-7fe03d1a999f" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9f1dce58-2d14-4873-ba7b-699e2d282e8b" xlink:to="loc_dei_LegalEntityAxis_d521d7bd-63e2-445d-9ccb-7fe03d1a999f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d521d7bd-63e2-445d-9ccb-7fe03d1a999f_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_d521d7bd-63e2-445d-9ccb-7fe03d1a999f" xlink:to="loc_dei_EntityDomain_d521d7bd-63e2-445d-9ccb-7fe03d1a999f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_db1798b6-88d1-4fef-ac54-19d4ea900f6d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_d521d7bd-63e2-445d-9ccb-7fe03d1a999f" xlink:to="loc_dei_EntityDomain_db1798b6-88d1-4fef-ac54-19d4ea900f6d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_4987cd0b-6e21-44f6-a109-da0ff6e0caf9" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_db1798b6-88d1-4fef-ac54-19d4ea900f6d" xlink:to="loc_aal_AmericanAirlinesIncMember_4987cd0b-6e21-44f6-a109-da0ff6e0caf9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_e15f9ab4-46f8-4cff-86ab-c84d7dbf3842" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9f1dce58-2d14-4873-ba7b-699e2d282e8b" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_e15f9ab4-46f8-4cff-86ab-c84d7dbf3842" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_e15f9ab4-46f8-4cff-86ab-c84d7dbf3842_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_e15f9ab4-46f8-4cff-86ab-c84d7dbf3842" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_e15f9ab4-46f8-4cff-86ab-c84d7dbf3842_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_302e4d7a-0062-4d40-9639-6f89e695824c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_e15f9ab4-46f8-4cff-86ab-c84d7dbf3842" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_302e4d7a-0062-4d40-9639-6f89e695824c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_b943b3ec-0976-4313-b053-bd77ffdf1e1b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_302e4d7a-0062-4d40-9639-6f89e695824c" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_b943b3ec-0976-4313-b053-bd77ffdf1e1b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_13f48233-e1f1-4570-b641-a0cb613d104a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_302e4d7a-0062-4d40-9639-6f89e695824c" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_13f48233-e1f1-4570-b641-a0cb613d104a" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansComponentsofNetPeriodicBenefitCostIncomeDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansComponentsofNetPeriodicBenefitCostIncomeDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansComponentsofNetPeriodicBenefitCostIncomeDetails" xlink:type="extended" id="i7e97157ecedf479f987131e059f130da_EmployeeBenefitPlansComponentsofNetPeriodicBenefitCostIncomeDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_07590b96-d54d-4a21-bca2-a9ea7196b02c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_93076264-6532-4df4-9557-898d31a32fd2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_07590b96-d54d-4a21-bca2-a9ea7196b02c" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_93076264-6532-4df4-9557-898d31a32fd2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_15c37262-3f80-4e9f-b139-fb81787bb147" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_93076264-6532-4df4-9557-898d31a32fd2" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_15c37262-3f80-4e9f-b139-fb81787bb147" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_db4c4015-364c-44d2-bf19-98674c31271a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_93076264-6532-4df4-9557-898d31a32fd2" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_db4c4015-364c-44d2-bf19-98674c31271a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_e86dd56f-b9f1-4666-b78e-6468c379a590" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_93076264-6532-4df4-9557-898d31a32fd2" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_e86dd56f-b9f1-4666-b78e-6468c379a590" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_98a12264-c693-47d0-8d68-4e8a16d08fac" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_93076264-6532-4df4-9557-898d31a32fd2" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_98a12264-c693-47d0-8d68-4e8a16d08fac" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_7569e0e9-3e2a-4f68-b2ac-c78062cac4a3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_93076264-6532-4df4-9557-898d31a32fd2" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_7569e0e9-3e2a-4f68-b2ac-c78062cac4a3" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationAmountsAbstract_6c3b4715-e5aa-4662-bb1c-890fe56a6d32" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationAmountsAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_93076264-6532-4df4-9557-898d31a32fd2" xlink:to="loc_aal_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationAmountsAbstract_6c3b4715-e5aa-4662-bb1c-890fe56a6d32" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_5f496ef5-153f-44a6-bedd-49b88347d9b2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationAmountsAbstract_6c3b4715-e5aa-4662-bb1c-890fe56a6d32" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_5f496ef5-153f-44a6-bedd-49b88347d9b2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_b4d813a7-fad0-495a-b892-5e76e1546b70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_DefinedBenefitPlanNetPeriodicBenefitCostCreditAmortizationAmountsAbstract_6c3b4715-e5aa-4662-bb1c-890fe56a6d32" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_b4d813a7-fad0-495a-b892-5e76e1546b70" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_84eec6f0-4335-41a0-b5fe-da52d4f91d0f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCostAbstract_93076264-6532-4df4-9557-898d31a32fd2" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_84eec6f0-4335-41a0-b5fe-da52d4f91d0f" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8d18824b-3b2d-419f-9254-2567437478f0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_07590b96-d54d-4a21-bca2-a9ea7196b02c" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8d18824b-3b2d-419f-9254-2567437478f0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_b6509d05-86ab-4cd9-a2e5-146beb1aeac0" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8d18824b-3b2d-419f-9254-2567437478f0" xlink:to="loc_dei_LegalEntityAxis_b6509d05-86ab-4cd9-a2e5-146beb1aeac0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b6509d05-86ab-4cd9-a2e5-146beb1aeac0_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_b6509d05-86ab-4cd9-a2e5-146beb1aeac0" xlink:to="loc_dei_EntityDomain_b6509d05-86ab-4cd9-a2e5-146beb1aeac0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0ee0009e-8e4e-4f06-834b-03e139198ca9" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_b6509d05-86ab-4cd9-a2e5-146beb1aeac0" xlink:to="loc_dei_EntityDomain_0ee0009e-8e4e-4f06-834b-03e139198ca9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_c1995fb2-b67a-4ba6-b2c9-45164093732c" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0ee0009e-8e4e-4f06-834b-03e139198ca9" xlink:to="loc_aal_AmericanAirlinesIncMember_c1995fb2-b67a-4ba6-b2c9-45164093732c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_bab81000-4286-46c9-8d3a-b320e2f37f0c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_8d18824b-3b2d-419f-9254-2567437478f0" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_bab81000-4286-46c9-8d3a-b320e2f37f0c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_bab81000-4286-46c9-8d3a-b320e2f37f0c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_bab81000-4286-46c9-8d3a-b320e2f37f0c" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_bab81000-4286-46c9-8d3a-b320e2f37f0c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_3b082bb7-53bb-4aef-980f-fbb3084e9820" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_bab81000-4286-46c9-8d3a-b320e2f37f0c" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_3b082bb7-53bb-4aef-980f-fbb3084e9820" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_f7de1f60-e15d-439f-a790-9560b18817b2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_3b082bb7-53bb-4aef-980f-fbb3084e9820" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_f7de1f60-e15d-439f-a790-9560b18817b2" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_56202efc-4a64-4032-baef-a85756704a43" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_3b082bb7-53bb-4aef-980f-fbb3084e9820" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_56202efc-4a64-4032-baef-a85756704a43" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAssumptionUsedtoDetermineBenefitObligationsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofAssumptionUsedtoDetermineBenefitObligationsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAssumptionUsedtoDetermineBenefitObligationsDetails" xlink:type="extended" id="i9159c5d8e5554224be48f777f30c8690_EmployeeBenefitPlansScheduleofAssumptionUsedtoDetermineBenefitObligationsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_40f63fa5-2113-4997-a80f-33423f3ef473" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_dc826c4b-770c-4ac5-a169-152c5f9c15ba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_40f63fa5-2113-4997-a80f-33423f3ef473" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_dc826c4b-770c-4ac5-a169-152c5f9c15ba" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_ed4296ed-b65a-445a-8e4b-d3fb9482974d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_dc826c4b-770c-4ac5-a169-152c5f9c15ba" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_ed4296ed-b65a-445a-8e4b-d3fb9482974d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_baa2915f-4a1f-47a2-a46e-4ac5111b78c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_40f63fa5-2113-4997-a80f-33423f3ef473" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_baa2915f-4a1f-47a2-a46e-4ac5111b78c7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_02f666e1-039a-467d-aef7-3d4baa900447" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_baa2915f-4a1f-47a2-a46e-4ac5111b78c7" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_02f666e1-039a-467d-aef7-3d4baa900447" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_ed43855c-a86f-40d1-b307-d7f1e3040bc2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_baa2915f-4a1f-47a2-a46e-4ac5111b78c7" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_ed43855c-a86f-40d1-b307-d7f1e3040bc2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_c5b0ded1-84c3-43e9-9363-a764f17ef311" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_baa2915f-4a1f-47a2-a46e-4ac5111b78c7" xlink:to="loc_us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear_c5b0ded1-84c3-43e9-9363-a764f17ef311" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_667ed54b-7c90-438f-b088-960f8cb08646" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_baa2915f-4a1f-47a2-a46e-4ac5111b78c7" xlink:to="loc_us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1_667ed54b-7c90-438f-b088-960f8cb08646" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ecbcfa28-5adc-42bb-a340-7555d4576654" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_40f63fa5-2113-4997-a80f-33423f3ef473" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ecbcfa28-5adc-42bb-a340-7555d4576654" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_bf591607-4dfe-4402-b60f-36161e528847" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ecbcfa28-5adc-42bb-a340-7555d4576654" xlink:to="loc_dei_LegalEntityAxis_bf591607-4dfe-4402-b60f-36161e528847" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bf591607-4dfe-4402-b60f-36161e528847_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_bf591607-4dfe-4402-b60f-36161e528847" xlink:to="loc_dei_EntityDomain_bf591607-4dfe-4402-b60f-36161e528847_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b8b662de-863d-4c3b-982c-39e6c8bd0fb0" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_bf591607-4dfe-4402-b60f-36161e528847" xlink:to="loc_dei_EntityDomain_b8b662de-863d-4c3b-982c-39e6c8bd0fb0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_1b972d13-2640-4849-b01b-d6755ae63bfb" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b8b662de-863d-4c3b-982c-39e6c8bd0fb0" xlink:to="loc_aal_AmericanAirlinesIncMember_1b972d13-2640-4849-b01b-d6755ae63bfb" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_8f386136-a12f-4ff5-b65e-ebc7dcd4e226" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ecbcfa28-5adc-42bb-a340-7555d4576654" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_8f386136-a12f-4ff5-b65e-ebc7dcd4e226" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_8f386136-a12f-4ff5-b65e-ebc7dcd4e226_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8f386136-a12f-4ff5-b65e-ebc7dcd4e226" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_8f386136-a12f-4ff5-b65e-ebc7dcd4e226_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_33d97a9a-1fac-49a0-a392-365c047afb25" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_8f386136-a12f-4ff5-b65e-ebc7dcd4e226" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_33d97a9a-1fac-49a0-a392-365c047afb25" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_3a342a75-890c-46f1-9d7d-56de0f1bfd40" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_33d97a9a-1fac-49a0-a392-365c047afb25" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_3a342a75-890c-46f1-9d7d-56de0f1bfd40" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_e3a6f47d-2a9c-4e5b-840a-cd67b6b8c888" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_33d97a9a-1fac-49a0-a392-365c047afb25" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_e3a6f47d-2a9c-4e5b-840a-cd67b6b8c888" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofExpectedFutureServiceBenefitPaymentsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofExpectedFutureServiceBenefitPaymentsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofExpectedFutureServiceBenefitPaymentsDetails" xlink:type="extended" id="ia2cd805089c147db9159658c9b9a4f77_EmployeeBenefitPlansScheduleofExpectedFutureServiceBenefitPaymentsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7072f3d1-016d-4ae5-a664-fe2655b459c4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_e121aa8c-a88b-4fa9-9758-34f4f2d26ffc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7072f3d1-016d-4ae5-a664-fe2655b459c4" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_e121aa8c-a88b-4fa9-9758-34f4f2d26ffc" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_acf55c27-6974-43e5-8fa2-11e1095345d1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7072f3d1-016d-4ae5-a664-fe2655b459c4" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_acf55c27-6974-43e5-8fa2-11e1095345d1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_1d055704-b7e0-480e-8c03-3ae63b1bf1f6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7072f3d1-016d-4ae5-a664-fe2655b459c4" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_1d055704-b7e0-480e-8c03-3ae63b1bf1f6" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_358ce7b5-4b56-4390-bbc1-a872d31e785e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7072f3d1-016d-4ae5-a664-fe2655b459c4" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_358ce7b5-4b56-4390-bbc1-a872d31e785e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_9afafad1-5ca9-43bf-b009-e0127bf84eae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7072f3d1-016d-4ae5-a664-fe2655b459c4" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_9afafad1-5ca9-43bf-b009-e0127bf84eae" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_6cddd3d8-6bcd-4ef3-a594-3805dea218d5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7072f3d1-016d-4ae5-a664-fe2655b459c4" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_6cddd3d8-6bcd-4ef3-a594-3805dea218d5" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2022af94-0d58-4bb8-889d-384b043b37ec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7072f3d1-016d-4ae5-a664-fe2655b459c4" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2022af94-0d58-4bb8-889d-384b043b37ec" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_dab38452-048a-49d0-8a66-2e195adbcdd0" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2022af94-0d58-4bb8-889d-384b043b37ec" xlink:to="loc_dei_LegalEntityAxis_dab38452-048a-49d0-8a66-2e195adbcdd0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_dab38452-048a-49d0-8a66-2e195adbcdd0_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_dab38452-048a-49d0-8a66-2e195adbcdd0" xlink:to="loc_dei_EntityDomain_dab38452-048a-49d0-8a66-2e195adbcdd0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_eecc2fda-8d53-4397-bae3-ceba7f7af7e6" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_dab38452-048a-49d0-8a66-2e195adbcdd0" xlink:to="loc_dei_EntityDomain_eecc2fda-8d53-4397-bae3-ceba7f7af7e6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_b3e2ac63-c91e-4eab-a204-e2282416383c" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_eecc2fda-8d53-4397-bae3-ceba7f7af7e6" xlink:to="loc_aal_AmericanAirlinesIncMember_b3e2ac63-c91e-4eab-a204-e2282416383c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_caf11688-c62e-41f9-9c51-be2b74c56325" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2022af94-0d58-4bb8-889d-384b043b37ec" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_caf11688-c62e-41f9-9c51-be2b74c56325" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_caf11688-c62e-41f9-9c51-be2b74c56325_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_caf11688-c62e-41f9-9c51-be2b74c56325" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_caf11688-c62e-41f9-9c51-be2b74c56325_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_79e2fa7e-508e-4c82-9002-fe0daeb1418e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_caf11688-c62e-41f9-9c51-be2b74c56325" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_79e2fa7e-508e-4c82-9002-fe0daeb1418e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_67a953d6-192f-42c9-9e19-c97899256813" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_79e2fa7e-508e-4c82-9002-fe0daeb1418e" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_67a953d6-192f-42c9-9e19-c97899256813" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_903ca03b-dbbf-4638-938a-a7f06f05a12d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_79e2fa7e-508e-4c82-9002-fe0daeb1418e" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_903ca03b-dbbf-4638-938a-a7f06f05a12d" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAllocationofPlanAssetsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofAllocationofPlanAssetsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofAllocationofPlanAssetsDetails" xlink:type="extended" id="i602096d0873f4f33942e47fec6ea7f2b_EmployeeBenefitPlansScheduleofAllocationofPlanAssetsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_fec674bd-0842-4492-a195-34e5af0babc8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_06eb2105-2cd6-46b9-9c9a-a13073d81867" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_fec674bd-0842-4492-a195-34e5af0babc8" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_06eb2105-2cd6-46b9-9c9a-a13073d81867" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9eb43388-658c-44b9-a5ac-aa65da0dd2cb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_fec674bd-0842-4492-a195-34e5af0babc8" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9eb43388-658c-44b9-a5ac-aa65da0dd2cb" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_882957c9-9370-48da-88d8-307ef6caba56" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9eb43388-658c-44b9-a5ac-aa65da0dd2cb" xlink:to="loc_dei_LegalEntityAxis_882957c9-9370-48da-88d8-307ef6caba56" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_882957c9-9370-48da-88d8-307ef6caba56_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_882957c9-9370-48da-88d8-307ef6caba56" xlink:to="loc_dei_EntityDomain_882957c9-9370-48da-88d8-307ef6caba56_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8a069cae-c679-45e6-a4f6-8a8ab6a5200e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_882957c9-9370-48da-88d8-307ef6caba56" xlink:to="loc_dei_EntityDomain_8a069cae-c679-45e6-a4f6-8a8ab6a5200e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_19a0bbd1-0cef-4193-923f-bfd1b84f81fe" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_8a069cae-c679-45e6-a4f6-8a8ab6a5200e" xlink:to="loc_aal_AmericanAirlinesIncMember_19a0bbd1-0cef-4193-923f-bfd1b84f81fe" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_6d441903-874a-4b1d-affd-bd4542a8b17d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9eb43388-658c-44b9-a5ac-aa65da0dd2cb" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_6d441903-874a-4b1d-affd-bd4542a8b17d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_6d441903-874a-4b1d-affd-bd4542a8b17d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_6d441903-874a-4b1d-affd-bd4542a8b17d" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_6d441903-874a-4b1d-affd-bd4542a8b17d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_6d441903-874a-4b1d-affd-bd4542a8b17d" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_e6f1fd39-4010-49a4-8f55-0ad38b507e4c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_e6f1fd39-4010-49a4-8f55-0ad38b507e4c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesUsLargeCapMember_7f08db2c-1c2d-4b92-bfad-02d9e5b36d26" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesUsLargeCapMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesUsLargeCapMember_7f08db2c-1c2d-4b92-bfad-02d9e5b36d26" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesUsMidCapMember_79ca3854-0d7d-4396-a5ef-1c4b13e367a2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesUsMidCapMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesUsMidCapMember_79ca3854-0d7d-4396-a5ef-1c4b13e367a2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_a29f413e-bf0d-40f2-b468-621a3d87c51e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_a29f413e-bf0d-40f2-b468-621a3d87c51e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesNonUSSmallMidMember_480c1216-b411-486c-9284-c69b587f779d" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesNonUSSmallMidMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesNonUSSmallMidMember_480c1216-b411-486c-9284-c69b587f779d" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EmergingMarketsMember_886706e8-3e54-4479-921d-332fe5c710bd" xlink:href="aal-20211231.xsd#aal_EmergingMarketsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_aal_EmergingMarketsMember_886706e8-3e54-4479-921d-332fe5c710bd" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AlternativeInvestmentMember_c876f923-8412-44ff-99e7-77dff8090876" xlink:href="aal-20211231.xsd#aal_AlternativeInvestmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_aal_AlternativeInvestmentMember_c876f923-8412-44ff-99e7-77dff8090876" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_65baba76-993e-4ba8-826f-b1baec0d31be" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_65baba76-993e-4ba8-826f-b1baec0d31be" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_FixedIncomeUSLongDurationMember_48617560-3a3e-4967-bfcb-006b2bd112d5" xlink:href="aal-20211231.xsd#aal_FixedIncomeUSLongDurationMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_aal_FixedIncomeUSLongDurationMember_48617560-3a3e-4967-bfcb-006b2bd112d5" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_FixedIncomeEmergingMarketsMember_0d949068-b1f9-408d-a023-0525943dd6c1" xlink:href="aal-20211231.xsd#aal_FixedIncomeEmergingMarketsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_aal_FixedIncomeEmergingMarketsMember_0d949068-b1f9-408d-a023-0525943dd6c1" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PrivateFixedIncomeMember_1b563978-dbb6-4beb-8139-7d367751f2c8" xlink:href="aal-20211231.xsd#aal_PrivateFixedIncomeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_aal_PrivateFixedIncomeMember_1b563978-dbb6-4beb-8139-7d367751f2c8" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanOtherInvestmentMember_915128ab-c852-4981-a87a-c49cf6391fba" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanOtherInvestmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_aal_DefinedBenefitPlanOtherInvestmentMember_915128ab-c852-4981-a87a-c49cf6391fba" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_7f1907fe-ec53-4767-aaab-f5247294f007" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_b4a118fd-39ff-4194-8219-a50b0854d6e7" xlink:to="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_7f1907fe-ec53-4767-aaab-f5247294f007" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_fbf35449-c62c-4f08-b9bb-10c57c2d2ec8" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_9eb43388-658c-44b9-a5ac-aa65da0dd2cb" xlink:to="loc_srt_RangeAxis_fbf35449-c62c-4f08-b9bb-10c57c2d2ec8" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_fbf35449-c62c-4f08-b9bb-10c57c2d2ec8_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_fbf35449-c62c-4f08-b9bb-10c57c2d2ec8" xlink:to="loc_srt_RangeMember_fbf35449-c62c-4f08-b9bb-10c57c2d2ec8_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_eed7066d-a7df-4dc2-a91b-576c0153990c" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_fbf35449-c62c-4f08-b9bb-10c57c2d2ec8" xlink:to="loc_srt_RangeMember_eed7066d-a7df-4dc2-a91b-576c0153990c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_f2ba3bbc-91f8-4035-8c06-d9cb07dc962e" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_eed7066d-a7df-4dc2-a91b-576c0153990c" xlink:to="loc_srt_MinimumMember_f2ba3bbc-91f8-4035-8c06-d9cb07dc962e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_0a3849f7-c11c-4d2e-adc4-1b3732ec791b" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_eed7066d-a7df-4dc2-a91b-576c0153990c" xlink:to="loc_srt_MaximumMember_0a3849f7-c11c-4d2e-adc4-1b3732ec791b" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofFairValueofPensionPlanAssetsbyAssetCategoryDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofFairValueofPensionPlanAssetsbyAssetCategoryDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofFairValueofPensionPlanAssetsbyAssetCategoryDetails" xlink:type="extended" id="i4517920e57184e009a467c59581ab8af_EmployeeBenefitPlansScheduleofFairValueofPensionPlanAssetsbyAssetCategoryDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e2ed6820-dec8-45f2-a1c3-329de3c0b943" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_95e4ccfc-035d-4a72-b1d5-61b21d04bdad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e2ed6820-dec8-45f2-a1c3-329de3c0b943" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_95e4ccfc-035d-4a72-b1d5-61b21d04bdad" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a13145ba-5ef5-4daf-9a16-ed3c0d37adfe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_e2ed6820-dec8-45f2-a1c3-329de3c0b943" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a13145ba-5ef5-4daf-9a16-ed3c0d37adfe" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9d54bcaf-dbe0-4bd0-beac-b45540479f3a" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a13145ba-5ef5-4daf-9a16-ed3c0d37adfe" xlink:to="loc_dei_LegalEntityAxis_9d54bcaf-dbe0-4bd0-beac-b45540479f3a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9d54bcaf-dbe0-4bd0-beac-b45540479f3a_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9d54bcaf-dbe0-4bd0-beac-b45540479f3a" xlink:to="loc_dei_EntityDomain_9d54bcaf-dbe0-4bd0-beac-b45540479f3a_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b806d0f9-78d6-4b79-aae1-b7500c8e0759" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9d54bcaf-dbe0-4bd0-beac-b45540479f3a" xlink:to="loc_dei_EntityDomain_b806d0f9-78d6-4b79-aae1-b7500c8e0759" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_038d3a2f-f974-406d-8afa-b073a5a1f394" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b806d0f9-78d6-4b79-aae1-b7500c8e0759" xlink:to="loc_aal_AmericanAirlinesIncMember_038d3a2f-f974-406d-8afa-b073a5a1f394" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_26c25f41-6876-4c41-a593-17b0e4496c22" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a13145ba-5ef5-4daf-9a16-ed3c0d37adfe" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_26c25f41-6876-4c41-a593-17b0e4496c22" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_26c25f41-6876-4c41-a593-17b0e4496c22_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_26c25f41-6876-4c41-a593-17b0e4496c22" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_26c25f41-6876-4c41-a593-17b0e4496c22_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_46461541-7af3-464d-88a5-77eb61528aba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_26c25f41-6876-4c41-a593-17b0e4496c22" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_46461541-7af3-464d-88a5-77eb61528aba" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_f7a9e25d-e55d-4eab-a14a-dd60e3367900" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_46461541-7af3-464d-88a5-77eb61528aba" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_f7a9e25d-e55d-4eab-a14a-dd60e3367900" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_93cf5b87-7114-476a-99d8-ba4b63c0a6a2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a13145ba-5ef5-4daf-9a16-ed3c0d37adfe" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_93cf5b87-7114-476a-99d8-ba4b63c0a6a2" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_93cf5b87-7114-476a-99d8-ba4b63c0a6a2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_93cf5b87-7114-476a-99d8-ba4b63c0a6a2" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_93cf5b87-7114-476a-99d8-ba4b63c0a6a2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_e4850acf-4b9b-4d22-9963-2d30f1c10143" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_93cf5b87-7114-476a-99d8-ba4b63c0a6a2" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_e4850acf-4b9b-4d22-9963-2d30f1c10143" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_e9f2e802-6840-41a2-987a-58ce7b87a902" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_e4850acf-4b9b-4d22-9963-2d30f1c10143" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_e9f2e802-6840-41a2-987a-58ce7b87a902" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_7afee58f-bb69-4c05-a2b7-5cd4fcb1f3ee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a13145ba-5ef5-4daf-9a16-ed3c0d37adfe" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_7afee58f-bb69-4c05-a2b7-5cd4fcb1f3ee" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_7afee58f-bb69-4c05-a2b7-5cd4fcb1f3ee_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_7afee58f-bb69-4c05-a2b7-5cd4fcb1f3ee" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_7afee58f-bb69-4c05-a2b7-5cd4fcb1f3ee_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_7afee58f-bb69-4c05-a2b7-5cd4fcb1f3ee" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_7cd8d244-bafe-4c95-b7f8-3f9d07beeadc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_7cd8d244-bafe-4c95-b7f8-3f9d07beeadc" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_4d37e909-5e27-4ae4-8333-8896549761c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember_4d37e909-5e27-4ae4-8333-8896549761c3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesLargeCapMember_d8c9be0e-7176-47db-97c9-e3998af965f8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesLargeCapMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesLargeCapMember_d8c9be0e-7176-47db-97c9-e3998af965f8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMidCapMember_4e33be0b-30bc-41ff-a1de-c6426bb87e81" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMidCapMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMidCapMember_4e33be0b-30bc-41ff-a1de-c6426bb87e81" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesSmallCapMember_2bff3c25-08b6-4f5e-9860-155ffa9099f0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesSmallCapMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesSmallCapMember_2bff3c25-08b6-4f5e-9860-155ffa9099f0" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MutualFundMember_2f187764-dd10-4f84-beed-1d39fb402845" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MutualFundMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_MutualFundMember_2f187764-dd10-4f84-beed-1d39fb402845" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_2bf8b771-747e-41fc-b059-3f7cafb185e9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_2bf8b771-747e-41fc-b059-3f7cafb185e9" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentDebtSecuritiesMember_1aea61c8-30b5-4662-a35a-069e10fb443a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_USGovernmentDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_USGovernmentDebtSecuritiesMember_1aea61c8-30b5-4662-a35a-069e10fb443a" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_3c93e9dc-795e-4399-9aed-352bc2615330" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_3c93e9dc-795e-4399-9aed-352bc2615330" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrivateEquityFundsMember_68c9b342-aa7f-4605-ad2a-661fae226b1f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PrivateEquityFundsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_PrivateEquityFundsMember_68c9b342-aa7f-4605-ad2a-661fae226b1f" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember_ff489d07-8399-4366-abd5-35d8e9f94fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember_ff489d07-8399-4366-abd5-35d8e9f94fa0" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommonCollectiveTrustand1032InvestmentTrustsMember_f5f48fa5-a148-467d-83b1-5716acc24f98" xlink:href="aal-20211231.xsd#aal_CommonCollectiveTrustand1032InvestmentTrustsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_aal_CommonCollectiveTrustand1032InvestmentTrustsMember_f5f48fa5-a148-467d-83b1-5716acc24f98" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InsuranceGroupAnnuityContractsMember_ef22a2d0-0638-47bd-ae0d-fe21925be24a" xlink:href="aal-20211231.xsd#aal_InsuranceGroupAnnuityContractsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_aal_InsuranceGroupAnnuityContractsMember_ef22a2d0-0638-47bd-ae0d-fe21925be24a" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanOtherInvestmentMember_795ddbd8-a5ac-4fa6-bf28-5b5df2468a7e" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanOtherInvestmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_aal_DefinedBenefitPlanOtherInvestmentMember_795ddbd8-a5ac-4fa6-bf28-5b5df2468a7e" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DividendAndInterestReceivableMember_bcb10fd3-1ab2-4816-a33b-4a414225e8f4" xlink:href="aal-20211231.xsd#aal_DividendAndInterestReceivableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_aal_DividendAndInterestReceivableMember_bcb10fd3-1ab2-4816-a33b-4a414225e8f4" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DueToFromBrokersForSaleOfSecuritiesMember_32db1eb0-187a-437e-91fe-0bffec8c5192" xlink:href="aal-20211231.xsd#aal_DueToFromBrokersForSaleOfSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_aal_DueToFromBrokersForSaleOfSecuritiesMember_32db1eb0-187a-437e-91fe-0bffec8c5192" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherReceivableMember_072f5718-c3a6-42d9-9354-985ffa92ee19" xlink:href="aal-20211231.xsd#aal_OtherReceivableMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_d22e8656-ccd9-41f4-9ae0-2dbf5943a689" xlink:to="loc_aal_OtherReceivableMember_072f5718-c3a6-42d9-9354-985ffa92ee19" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_660c2745-9ca0-4187-8ff8-56f325a72dd2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_a13145ba-5ef5-4daf-9a16-ed3c0d37adfe" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_660c2745-9ca0-4187-8ff8-56f325a72dd2" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_660c2745-9ca0-4187-8ff8-56f325a72dd2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_660c2745-9ca0-4187-8ff8-56f325a72dd2" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_660c2745-9ca0-4187-8ff8-56f325a72dd2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_166d02b2-f327-49ef-ba98-b9030f0d6506" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_660c2745-9ca0-4187-8ff8-56f325a72dd2" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_166d02b2-f327-49ef-ba98-b9030f0d6506" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel12And3Member_62c384fa-5010-481f-9e41-8b1a98c565b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel12And3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_166d02b2-f327-49ef-ba98-b9030f0d6506" xlink:to="loc_us-gaap_FairValueInputsLevel12And3Member_62c384fa-5010-481f-9e41-8b1a98c565b5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_4f8187cc-0348-4065-aada-0a65edf6445d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_62c384fa-5010-481f-9e41-8b1a98c565b5" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_4f8187cc-0348-4065-aada-0a65edf6445d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_3fb6d38b-a4f7-4149-9ff0-dbd5f9eb07a1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_62c384fa-5010-481f-9e41-8b1a98c565b5" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_3fb6d38b-a4f7-4149-9ff0-dbd5f9eb07a1" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_91c9c26e-487f-43dd-8117-8696e71feda2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueInputsLevel12And3Member_62c384fa-5010-481f-9e41-8b1a98c565b5" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_91c9c26e-487f-43dd-8117-8696e71feda2" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_143c5b81-18ff-44ba-9131-03d2865e9912" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_166d02b2-f327-49ef-ba98-b9030f0d6506" xlink:to="loc_us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember_143c5b81-18ff-44ba-9131-03d2865e9912" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansScheduleofFairValueofPensionPlanAssetsbyAssetCategoryAdditionalInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansScheduleofFairValueofPensionPlanAssetsbyAssetCategoryAdditionalInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansScheduleofFairValueofPensionPlanAssetsbyAssetCategoryAdditionalInformationDetails" xlink:type="extended" id="i5243f33e43fa4c1286f5ad8438a342ec_EmployeeBenefitPlansScheduleofFairValueofPensionPlanAssetsbyAssetCategoryAdditionalInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2530d1ad-74bc-4a0b-b705-b12a5ac450d5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsInvestmentWithinPlanAssetCategoryPercentage_f39a16f9-ba41-42ea-a31d-25400fda4b1a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsInvestmentWithinPlanAssetCategoryPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2530d1ad-74bc-4a0b-b705-b12a5ac450d5" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsInvestmentWithinPlanAssetCategoryPercentage_f39a16f9-ba41-42ea-a31d-25400fda4b1a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EstimatedLifeOfLiquidationOfUnderlyingAssets_33db9813-5883-4538-82ef-cb16e7d185eb" xlink:href="aal-20211231.xsd#aal_EstimatedLifeOfLiquidationOfUnderlyingAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2530d1ad-74bc-4a0b-b705-b12a5ac450d5" xlink:to="loc_aal_EstimatedLifeOfLiquidationOfUnderlyingAssets_33db9813-5883-4538-82ef-cb16e7d185eb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanMasterTrustFutureFundingCommitments_de6e2cf4-5612-458e-acab-cc1ea696304b" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanMasterTrustFutureFundingCommitments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2530d1ad-74bc-4a0b-b705-b12a5ac450d5" xlink:to="loc_aal_DefinedBenefitPlanMasterTrustFutureFundingCommitments_de6e2cf4-5612-458e-acab-cc1ea696304b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd44230e-9c88-4473-85b7-a8f1fa81fcee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_2530d1ad-74bc-4a0b-b705-b12a5ac450d5" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd44230e-9c88-4473-85b7-a8f1fa81fcee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_92cb8a58-ddec-4344-a856-013ee832c233" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd44230e-9c88-4473-85b7-a8f1fa81fcee" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_92cb8a58-ddec-4344-a856-013ee832c233" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_92cb8a58-ddec-4344-a856-013ee832c233_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_92cb8a58-ddec-4344-a856-013ee832c233" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_92cb8a58-ddec-4344-a856-013ee832c233_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_92cb8a58-ddec-4344-a856-013ee832c233" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesUnitedKingdomMember_21a21a17-6235-4183-a885-17e106c0179b" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesUnitedKingdomMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesUnitedKingdomMember_21a21a17-6235-4183-a885-17e106c0179b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesIrelandMember_3497c41a-d16b-40fe-a53b-f7a2f0844116" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesIrelandMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesIrelandMember_3497c41a-d16b-40fe-a53b-f7a2f0844116" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesJapanMember_d805314c-9be7-4b13-b20e-eba32c49db2a" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesJapanMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesJapanMember_d805314c-9be7-4b13-b20e-eba32c49db2a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesSwitzerlandMember_a4bcaa21-9a49-495a-bcd2-7e6ff275f6cd" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesSwitzerlandMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesSwitzerlandMember_a4bcaa21-9a49-495a-bcd2-7e6ff275f6cd" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesFranceMember_f49b3c28-5c3a-48da-bc08-3bbba09d8ac6" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesFranceMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesFranceMember_f49b3c28-5c3a-48da-bc08-3bbba09d8ac6" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesGermanyMember_4894fde5-e93e-44f0-b52d-53b52f66632f" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesGermanyMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesGermanyMember_4894fde5-e93e-44f0-b52d-53b52f66632f" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesNetherlandsMember_24c389cc-6627-4993-8c80-36d984318341" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesNetherlandsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesNetherlandsMember_24c389cc-6627-4993-8c80-36d984318341" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesNonUSEmergingMarketsMember_6942d455-9710-4431-8706-9ce541758c2b" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesNonUSEmergingMarketsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesNonUSEmergingMarketsMember_6942d455-9710-4431-8706-9ce541758c2b" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DefinedBenefitPlanEquitySecuritiesNonUSIndividuallyImmaterialMember_ae48d36f-94f2-418f-87a3-1ad489216103" xlink:href="aal-20211231.xsd#aal_DefinedBenefitPlanEquitySecuritiesNonUSIndividuallyImmaterialMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_DefinedBenefitPlanEquitySecuritiesNonUSIndividuallyImmaterialMember_ae48d36f-94f2-418f-87a3-1ad489216103" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MutualFundMember_bf2bc82e-e396-4360-a4e8-8c09ecd3818c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MutualFundMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_us-gaap_MutualFundMember_bf2bc82e-e396-4360-a4e8-8c09ecd3818c" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_c51a3b52-9bf2-4ebc-b217-ee70e42e376c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_c51a3b52-9bf2-4ebc-b217-ee70e42e376c" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_USGovernmentDebtSecuritiesMember_072b2ab4-0854-4486-9cfb-12d3cf4d425e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_USGovernmentDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_us-gaap_USGovernmentDebtSecuritiesMember_072b2ab4-0854-4486-9cfb-12d3cf4d425e" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrivateEquityFundsMember_aed3c467-c86f-4ed2-a418-2e9203ed53d4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PrivateEquityFundsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_us-gaap_PrivateEquityFundsMember_aed3c467-c86f-4ed2-a418-2e9203ed53d4" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommonCollectiveTrustand1032InvestmentTrustsMember_c6d7bc06-253e-44d6-8fcb-b9a95db49abd" xlink:href="aal-20211231.xsd#aal_CommonCollectiveTrustand1032InvestmentTrustsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_ce98215d-aaaf-43ec-99fc-fc9227ec75b9" xlink:to="loc_aal_CommonCollectiveTrustand1032InvestmentTrustsMember_c6d7bc06-253e-44d6-8fcb-b9a95db49abd" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesByInvestmentObjectiveAxis_af94a0ee-a2a0-4891-a45f-fccf37543b3c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesByInvestmentObjectiveAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd44230e-9c88-4473-85b7-a8f1fa81fcee" xlink:to="loc_us-gaap_EquitySecuritiesByInvestmentObjectiveAxis_af94a0ee-a2a0-4891-a45f-fccf37543b3c" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_af94a0ee-a2a0-4891-a45f-fccf37543b3c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesInvestmentObjectiveMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquitySecuritiesByInvestmentObjectiveAxis_af94a0ee-a2a0-4891-a45f-fccf37543b3c" xlink:to="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_af94a0ee-a2a0-4891-a45f-fccf37543b3c_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesInvestmentObjectiveMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquitySecuritiesByInvestmentObjectiveAxis_af94a0ee-a2a0-4891-a45f-fccf37543b3c" xlink:to="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_USCompaniesMember_252ff1b7-266f-4104-80d5-2dbc77df52dc" xlink:href="aal-20211231.xsd#aal_USCompaniesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_USCompaniesMember_252ff1b7-266f-4104-80d5-2dbc77df52dc" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_USGovernmentDebtSecuritiesandCorporateDebtSecuritiesMember_55161fb2-c8a3-4751-a11b-6262db4c2ad6" xlink:href="aal-20211231.xsd#aal_USGovernmentDebtSecuritiesandCorporateDebtSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_USGovernmentDebtSecuritiesandCorporateDebtSecuritiesMember_55161fb2-c8a3-4751-a11b-6262db4c2ad6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InternationalCompaniesMember_4628e97c-61d7-4887-9c35-a1fcc2a3e615" xlink:href="aal-20211231.xsd#aal_InternationalCompaniesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_InternationalCompaniesMember_4628e97c-61d7-4887-9c35-a1fcc2a3e615" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CorporateDebtWithStandardAndPoorsRatingLowerThanAMember_6f203829-18ba-43fc-b860-35d6c961a0ed" xlink:href="aal-20211231.xsd#aal_CorporateDebtWithStandardAndPoorsRatingLowerThanAMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_CorporateDebtWithStandardAndPoorsRatingLowerThanAMember_6f203829-18ba-43fc-b860-35d6c961a0ed" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CorporateDebtWithStandardAndPoorsRatingAOrHigherMember_baf91cfc-b707-4920-9b8d-8c8507f28f18" xlink:href="aal-20211231.xsd#aal_CorporateDebtWithStandardAndPoorsRatingAOrHigherMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_CorporateDebtWithStandardAndPoorsRatingAOrHigherMember_baf91cfc-b707-4920-9b8d-8c8507f28f18" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EmergingMarketCompaniesMember_120794c6-e40a-450d-89af-0eb4450716f5" xlink:href="aal-20211231.xsd#aal_EmergingMarketCompaniesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_EmergingMarketCompaniesMember_120794c6-e40a-450d-89af-0eb4450716f5" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_DomesticGovernmentSecuritiesMember_2190acba-5611-4d24-a3d6-d423ce9a0241" xlink:href="aal-20211231.xsd#aal_DomesticGovernmentSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_DomesticGovernmentSecuritiesMember_2190acba-5611-4d24-a3d6-d423ce9a0241" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EmergingMarketGovernmentSecuritiesMember_43f37064-61f4-410b-a830-6f556daf1786" xlink:href="aal-20211231.xsd#aal_EmergingMarketGovernmentSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_EmergingMarketGovernmentSecuritiesMember_43f37064-61f4-410b-a830-6f556daf1786" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherInternationalGovernmentSecuritiesMember_84014f18-7caf-47ab-b2fd-e1e93eb48703" xlink:href="aal-20211231.xsd#aal_OtherInternationalGovernmentSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_OtherInternationalGovernmentSecuritiesMember_84014f18-7caf-47ab-b2fd-e1e93eb48703" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommonOrCollectiveTrustSecuritiesOfLargerCompaniesWithinUSMember_38e819a7-1ede-489b-b641-0bf13bfb9e2e" xlink:href="aal-20211231.xsd#aal_CommonOrCollectiveTrustSecuritiesOfLargerCompaniesWithinUSMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_CommonOrCollectiveTrustSecuritiesOfLargerCompaniesWithinUSMember_38e819a7-1ede-489b-b641-0bf13bfb9e2e" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EmergingMarket10312InvestmentTrustMember_c50bead8-88f6-4588-95fd-1d8a7e563b42" xlink:href="aal-20211231.xsd#aal_EmergingMarket10312InvestmentTrustMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_EmergingMarket10312InvestmentTrustMember_c50bead8-88f6-4588-95fd-1d8a7e563b42" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommonOrCollectiveTrustSecuritiesOfCompaniesOutsideUSMember_55a9c27d-73da-4323-ac90-be084db230c1" xlink:href="aal-20211231.xsd#aal_CommonOrCollectiveTrustSecuritiesOfCompaniesOutsideUSMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_CommonOrCollectiveTrustSecuritiesOfCompaniesOutsideUSMember_55a9c27d-73da-4323-ac90-be084db230c1" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommonOrCollectiveInterestTrustShortTermSecuritiesMember_007ec3c4-74bd-4c66-a710-1efc4692bb14" xlink:href="aal-20211231.xsd#aal_CommonOrCollectiveInterestTrustShortTermSecuritiesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_CommonOrCollectiveInterestTrustShortTermSecuritiesMember_007ec3c4-74bd-4c66-a710-1efc4692bb14" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommonOrCollectiveTrustSecuritiesOfSmallerCompaniesWithinUSMember_130b7009-d563-48ee-8a2e-62834b5734ba" xlink:href="aal-20211231.xsd#aal_CommonOrCollectiveTrustSecuritiesOfSmallerCompaniesWithinUSMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_CommonOrCollectiveTrustSecuritiesOfSmallerCompaniesWithinUSMember_130b7009-d563-48ee-8a2e-62834b5734ba" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CanadianSegregatedBalancedValueMember_120a34d6-77f9-4aed-96ca-2fea04d44c61" xlink:href="aal-20211231.xsd#aal_CanadianSegregatedBalancedValueMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_459ad62b-7b6c-4bb5-9fb9-9c70c6da3fc5" xlink:to="loc_aal_CanadianSegregatedBalancedValueMember_120a34d6-77f9-4aed-96ca-2fea04d44c61" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_7e53eacf-fe20-4be3-af9e-7360a9d2c117" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd44230e-9c88-4473-85b7-a8f1fa81fcee" xlink:to="loc_srt_RangeAxis_7e53eacf-fe20-4be3-af9e-7360a9d2c117" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_7e53eacf-fe20-4be3-af9e-7360a9d2c117_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_7e53eacf-fe20-4be3-af9e-7360a9d2c117" xlink:to="loc_srt_RangeMember_7e53eacf-fe20-4be3-af9e-7360a9d2c117_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_99b70f19-bbe7-4f14-931b-01d8e5452567" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RangeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_7e53eacf-fe20-4be3-af9e-7360a9d2c117" xlink:to="loc_srt_RangeMember_99b70f19-bbe7-4f14-931b-01d8e5452567" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_73138908-42ee-4d35-8a20-7a219438e905" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MinimumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_99b70f19-bbe7-4f14-931b-01d8e5452567" xlink:to="loc_srt_MinimumMember_73138908-42ee-4d35-8a20-7a219438e905" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_dd95addb-ed27-4b5a-bd89-f624e94b985a" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_MaximumMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_99b70f19-bbe7-4f14-931b-01d8e5452567" xlink:to="loc_srt_MaximumMember_dd95addb-ed27-4b5a-bd89-f624e94b985a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_b7cd2d78-34b1-4f1e-b841-18aba1e25214" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_bd44230e-9c88-4473-85b7-a8f1fa81fcee" xlink:to="loc_dei_LegalEntityAxis_b7cd2d78-34b1-4f1e-b841-18aba1e25214" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b7cd2d78-34b1-4f1e-b841-18aba1e25214_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_b7cd2d78-34b1-4f1e-b841-18aba1e25214" xlink:to="loc_dei_EntityDomain_b7cd2d78-34b1-4f1e-b841-18aba1e25214_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2aae46e5-3989-40e9-a595-39512b72f908" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_b7cd2d78-34b1-4f1e-b841-18aba1e25214" xlink:to="loc_dei_EntityDomain_2aae46e5-3989-40e9-a595-39512b72f908" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_8a1c6c09-4724-474c-a1a4-8216eae3444e" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_2aae46e5-3989-40e9-a595-39512b72f908" xlink:to="loc_aal_AmericanAirlinesIncMember_8a1c6c09-4724-474c-a1a4-8216eae3444e" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansChangesinFairValueMeasurementsofLevel3InvestmentsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansChangesinFairValueMeasurementsofLevel3InvestmentsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansChangesinFairValueMeasurementsofLevel3InvestmentsDetails" xlink:type="extended" id="i4495c75003bd43ee935962e5187f38c9_EmployeeBenefitPlansChangesinFairValueMeasurementsofLevel3InvestmentsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3866c3ca-ea47-4b15-873a-5fcac169d751" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward_061d194c-45c4-493b-8f93-fd553e93f3c4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3866c3ca-ea47-4b15-873a-5fcac169d751" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward_061d194c-45c4-493b-8f93-fd553e93f3c4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_87534cad-fb7c-40fe-90f0-2a9a4d373982" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward_061d194c-45c4-493b-8f93-fd553e93f3c4" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_87534cad-fb7c-40fe-90f0-2a9a4d373982" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld_c0454b42-451e-4cc0-8d6d-54e662aa7bfe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward_061d194c-45c4-493b-8f93-fd553e93f3c4" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld_c0454b42-451e-4cc0-8d6d-54e662aa7bfe" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsLevel3ReconciliationIncreaseForPurchase_318cf89f-25d6-49ec-a83c-71db5806a35a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsLevel3ReconciliationIncreaseForPurchase"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward_061d194c-45c4-493b-8f93-fd553e93f3c4" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsLevel3ReconciliationIncreaseForPurchase_318cf89f-25d6-49ec-a83c-71db5806a35a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsLevel3ReconciliationDecreaseForSale_5f55f5cb-be1f-45f5-8989-68fd07e92b15" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsLevel3ReconciliationDecreaseForSale"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward_061d194c-45c4-493b-8f93-fd553e93f3c4" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsLevel3ReconciliationDecreaseForSale_5f55f5cb-be1f-45f5-8989-68fd07e92b15" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_4ee18bf6-fe75-4863-a713-230221af226f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_649e5155-de48-4637-b4b3-6aadbcde57c1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_3866c3ca-ea47-4b15-873a-5fcac169d751" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_649e5155-de48-4637-b4b3-6aadbcde57c1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_6766090a-4261-4c89-818a-a6e4c419cf69" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_649e5155-de48-4637-b4b3-6aadbcde57c1" xlink:to="loc_dei_LegalEntityAxis_6766090a-4261-4c89-818a-a6e4c419cf69" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_6766090a-4261-4c89-818a-a6e4c419cf69_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_6766090a-4261-4c89-818a-a6e4c419cf69" xlink:to="loc_dei_EntityDomain_6766090a-4261-4c89-818a-a6e4c419cf69_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_67275cc7-d9fd-49d4-b1c6-6899b9226f78" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_6766090a-4261-4c89-818a-a6e4c419cf69" xlink:to="loc_dei_EntityDomain_67275cc7-d9fd-49d4-b1c6-6899b9226f78" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_3a51283f-badc-47d9-ba7d-bf7bd1aa988c" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_67275cc7-d9fd-49d4-b1c6-6899b9226f78" xlink:to="loc_aal_AmericanAirlinesIncMember_3a51283f-badc-47d9-ba7d-bf7bd1aa988c" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_ae78f76e-e213-42b4-a679-d8f7ab0aae1e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_649e5155-de48-4637-b4b3-6aadbcde57c1" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_ae78f76e-e213-42b4-a679-d8f7ab0aae1e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ae78f76e-e213-42b4-a679-d8f7ab0aae1e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ae78f76e-e213-42b4-a679-d8f7ab0aae1e" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ae78f76e-e213-42b4-a679-d8f7ab0aae1e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_61c30217-99cb-432d-bb72-9574c13f729c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ae78f76e-e213-42b4-a679-d8f7ab0aae1e" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_61c30217-99cb-432d-bb72-9574c13f729c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_cf672a76-44fe-451a-b453-e50a29ac2727" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_61c30217-99cb-432d-bb72-9574c13f729c" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_cf672a76-44fe-451a-b453-e50a29ac2727" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9ee56378-55a2-45d9-8ae1-6ddaaa1c760d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_649e5155-de48-4637-b4b3-6aadbcde57c1" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9ee56378-55a2-45d9-8ae1-6ddaaa1c760d" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9ee56378-55a2-45d9-8ae1-6ddaaa1c760d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9ee56378-55a2-45d9-8ae1-6ddaaa1c760d" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9ee56378-55a2-45d9-8ae1-6ddaaa1c760d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_82bd1d4e-8cc5-43d3-b3d0-1c9c6bdff623" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_9ee56378-55a2-45d9-8ae1-6ddaaa1c760d" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_82bd1d4e-8cc5-43d3-b3d0-1c9c6bdff623" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_234f9146-63c6-40d6-acb5-a2effcd117b6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_82bd1d4e-8cc5-43d3-b3d0-1c9c6bdff623" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_234f9146-63c6-40d6-acb5-a2effcd117b6" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansFairValuesofRetireeMedicalandOtherPostretirementBenefitPlansAssetsbyAssetCategoryDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansFairValuesofRetireeMedicalandOtherPostretirementBenefitPlansAssetsbyAssetCategoryDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansFairValuesofRetireeMedicalandOtherPostretirementBenefitPlansAssetsbyAssetCategoryDetails" xlink:type="extended" id="if3ea1135ce8f4dfbaac0373eae08500f_EmployeeBenefitPlansFairValuesofRetireeMedicalandOtherPostretirementBenefitPlansAssetsbyAssetCategoryDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7db5b0bb-2faf-41ed-8363-eedc24320c84" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_f32141ec-2fca-4cf6-9c35-8b0d9f910b63" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7db5b0bb-2faf-41ed-8363-eedc24320c84" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_f32141ec-2fca-4cf6-9c35-8b0d9f910b63" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsInvestmentWithinPlanAssetCategoryPercentage_1b514586-bffa-4450-9633-0a206b22d011" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsInvestmentWithinPlanAssetCategoryPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7db5b0bb-2faf-41ed-8363-eedc24320c84" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsInvestmentWithinPlanAssetCategoryPercentage_1b514586-bffa-4450-9633-0a206b22d011" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2c897bf1-c5d6-452c-9aa1-808bf4f683ee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7db5b0bb-2faf-41ed-8363-eedc24320c84" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2c897bf1-c5d6-452c-9aa1-808bf4f683ee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_cf9c1eeb-6a42-4ca0-a9b3-b12ee93204eb" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2c897bf1-c5d6-452c-9aa1-808bf4f683ee" xlink:to="loc_dei_LegalEntityAxis_cf9c1eeb-6a42-4ca0-a9b3-b12ee93204eb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_cf9c1eeb-6a42-4ca0-a9b3-b12ee93204eb_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_cf9c1eeb-6a42-4ca0-a9b3-b12ee93204eb" xlink:to="loc_dei_EntityDomain_cf9c1eeb-6a42-4ca0-a9b3-b12ee93204eb_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1d98c5d4-739a-4464-8cde-ba46bb75c37d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_cf9c1eeb-6a42-4ca0-a9b3-b12ee93204eb" xlink:to="loc_dei_EntityDomain_1d98c5d4-739a-4464-8cde-ba46bb75c37d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_7efc930c-13eb-4dab-8d5d-5d57e77559f4" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_1d98c5d4-739a-4464-8cde-ba46bb75c37d" xlink:to="loc_aal_AmericanAirlinesIncMember_7efc930c-13eb-4dab-8d5d-5d57e77559f4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_ee56afaa-d424-438b-966d-231875a47fdc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2c897bf1-c5d6-452c-9aa1-808bf4f683ee" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_ee56afaa-d424-438b-966d-231875a47fdc" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ee56afaa-d424-438b-966d-231875a47fdc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ee56afaa-d424-438b-966d-231875a47fdc" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ee56afaa-d424-438b-966d-231875a47fdc_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_46effe04-5414-469b-ad47-4e9b06312011" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ee56afaa-d424-438b-966d-231875a47fdc" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_46effe04-5414-469b-ad47-4e9b06312011" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_2485a9d0-2f8b-4bdf-b368-59c647e1967e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_46effe04-5414-469b-ad47-4e9b06312011" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_2485a9d0-2f8b-4bdf-b368-59c647e1967e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_a6349fa7-5211-4f39-a774-df7bd2947eac" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2c897bf1-c5d6-452c-9aa1-808bf4f683ee" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_a6349fa7-5211-4f39-a774-df7bd2947eac" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_a6349fa7-5211-4f39-a774-df7bd2947eac_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_a6349fa7-5211-4f39-a774-df7bd2947eac" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_a6349fa7-5211-4f39-a774-df7bd2947eac_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_e7392d07-59ef-42d6-a8b0-efe35f8b969c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanAssetCategoriesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_a6349fa7-5211-4f39-a774-df7bd2947eac" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_e7392d07-59ef-42d6-a8b0-efe35f8b969c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_7f95dd0b-eea7-49ef-a4a9-5fbc18e9ac49" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MoneyMarketFundsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_e7392d07-59ef-42d6-a8b0-efe35f8b969c" xlink:to="loc_us-gaap_MoneyMarketFundsMember_7f95dd0b-eea7-49ef-a4a9-5fbc18e9ac49" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_MutualFundAALClassMember_e54d5e1d-d6a3-4742-8ff5-acc005151b19" xlink:href="aal-20211231.xsd#aal_MutualFundAALClassMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_e7392d07-59ef-42d6-a8b0-efe35f8b969c" xlink:to="loc_aal_MutualFundAALClassMember_e54d5e1d-d6a3-4742-8ff5-acc005151b19" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MutualFundMember_ab21f023-13d3-4d3a-9660-977a53e4677a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MutualFundMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_e7392d07-59ef-42d6-a8b0-efe35f8b969c" xlink:to="loc_us-gaap_MutualFundMember_ab21f023-13d3-4d3a-9660-977a53e4677a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesByInvestmentObjectiveAxis_86fb0ee5-7438-4fa5-8962-73890ca8ec3f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesByInvestmentObjectiveAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2c897bf1-c5d6-452c-9aa1-808bf4f683ee" xlink:to="loc_us-gaap_EquitySecuritiesByInvestmentObjectiveAxis_86fb0ee5-7438-4fa5-8962-73890ca8ec3f" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_86fb0ee5-7438-4fa5-8962-73890ca8ec3f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesInvestmentObjectiveMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquitySecuritiesByInvestmentObjectiveAxis_86fb0ee5-7438-4fa5-8962-73890ca8ec3f" xlink:to="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_86fb0ee5-7438-4fa5-8962-73890ca8ec3f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_99ca502e-8fd6-472f-b988-0cc8ea0d5f1c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquitySecuritiesInvestmentObjectiveMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquitySecuritiesByInvestmentObjectiveAxis_86fb0ee5-7438-4fa5-8962-73890ca8ec3f" xlink:to="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_99ca502e-8fd6-472f-b988-0cc8ea0d5f1c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InternationalCompaniesMember_7bbd7fc7-b980-4dda-90ea-6813ec04a9a0" xlink:href="aal-20211231.xsd#aal_InternationalCompaniesMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquitySecuritiesInvestmentObjectiveMember_99ca502e-8fd6-472f-b988-0cc8ea0d5f1c" xlink:to="loc_aal_InternationalCompaniesMember_7bbd7fc7-b980-4dda-90ea-6813ec04a9a0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f8abaa5d-ddfa-46bf-b93c-128d7c0f2854" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_2c897bf1-c5d6-452c-9aa1-808bf4f683ee" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f8abaa5d-ddfa-46bf-b93c-128d7c0f2854" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f8abaa5d-ddfa-46bf-b93c-128d7c0f2854_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f8abaa5d-ddfa-46bf-b93c-128d7c0f2854" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f8abaa5d-ddfa-46bf-b93c-128d7c0f2854_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b5f0975f-6992-4a24-ae5c-0ad5ee37d419" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f8abaa5d-ddfa-46bf-b93c-128d7c0f2854" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b5f0975f-6992-4a24-ae5c-0ad5ee37d419" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_248e79ef-a947-44e9-895f-f2bef9b461e0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel1Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b5f0975f-6992-4a24-ae5c-0ad5ee37d419" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_248e79ef-a947-44e9-895f-f2bef9b461e0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_dcaa5807-1c73-4f18-93e1-994015633b87" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel2Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b5f0975f-6992-4a24-ae5c-0ad5ee37d419" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_dcaa5807-1c73-4f18-93e1-994015633b87" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_5df5957f-0fe7-4728-8eae-f26e76e805c4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FairValueInputsLevel3Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_b5f0975f-6992-4a24-ae5c-0ad5ee37d419" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_5df5957f-0fe7-4728-8eae-f26e76e805c4" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansDefinedContributionandMultiemployerPlansDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansDefinedContributionandMultiemployerPlansDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansDefinedContributionandMultiemployerPlansDetails" xlink:type="extended" id="i346a6f231ce44293a22e191ab388c413_EmployeeBenefitPlansDefinedContributionandMultiemployerPlansDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_f6272bf2-59f7-4424-869e-426da93f4943" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedContributionPlanDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanCostRecognized_1968cf34-3d17-47d3-a640-cca9486ecfbe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedContributionPlanCostRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_f6272bf2-59f7-4424-869e-426da93f4943" xlink:to="loc_us-gaap_DefinedContributionPlanCostRecognized_1968cf34-3d17-47d3-a640-cca9486ecfbe" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MultiemployerPlanPensionSignificantEmployerContributionCost_12ac83ed-dffd-424e-86bb-b8879c26b66e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MultiemployerPlanPensionSignificantEmployerContributionCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_f6272bf2-59f7-4424-869e-426da93f4943" xlink:to="loc_us-gaap_MultiemployerPlanPensionSignificantEmployerContributionCost_12ac83ed-dffd-424e-86bb-b8879c26b66e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MultiemployerPlanEmployerContributionCost_85a3b44c-495b-4ccf-b410-77b6b9bb5660" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MultiemployerPlanEmployerContributionCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_f6272bf2-59f7-4424-869e-426da93f4943" xlink:to="loc_us-gaap_MultiemployerPlanEmployerContributionCost_85a3b44c-495b-4ccf-b410-77b6b9bb5660" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_MultiemployerPlanContributionsByEmployerPercentageOfTotalContributions_a497f61b-dce0-4658-8446-16784e6a55af" xlink:href="aal-20211231.xsd#aal_MultiemployerPlanContributionsByEmployerPercentageOfTotalContributions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_f6272bf2-59f7-4424-869e-426da93f4943" xlink:to="loc_aal_MultiemployerPlanContributionsByEmployerPercentageOfTotalContributions_a497f61b-dce0-4658-8446-16784e6a55af" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_MultiemployerPlansFundedStatusPercentage_fdd5d849-ad97-4f52-8e6a-86a8ad5ea0c9" xlink:href="aal-20211231.xsd#aal_MultiemployerPlansFundedStatusPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_f6272bf2-59f7-4424-869e-426da93f4943" xlink:to="loc_aal_MultiemployerPlansFundedStatusPercentage_fdd5d849-ad97-4f52-8e6a-86a8ad5ea0c9" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_MultiemployerPlansFundingImprovementPlanAndRehabilitationPlanAnnualPercentageIncreaseInContributionRateByEmployer_0f8beb0d-413f-40d6-9a91-b2c0df860d42" xlink:href="aal-20211231.xsd#aal_MultiemployerPlansFundingImprovementPlanAndRehabilitationPlanAnnualPercentageIncreaseInContributionRateByEmployer"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_f6272bf2-59f7-4424-869e-426da93f4943" xlink:to="loc_aal_MultiemployerPlansFundingImprovementPlanAndRehabilitationPlanAnnualPercentageIncreaseInContributionRateByEmployer_0f8beb0d-413f-40d6-9a91-b2c0df860d42" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedContributionPlanTable_6f0d415c-c087-4529-bda9-ce0cf6c76de7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DefinedContributionPlanTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedContributionPlanDisclosureLineItems_f6272bf2-59f7-4424-869e-426da93f4943" xlink:to="loc_us-gaap_DefinedContributionPlanTable_6f0d415c-c087-4529-bda9-ce0cf6c76de7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_ad052cb9-dd81-4677-87e6-2b3f41e8fa2d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedContributionPlanTable_6f0d415c-c087-4529-bda9-ce0cf6c76de7" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_ad052cb9-dd81-4677-87e6-2b3f41e8fa2d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_ad052cb9-dd81-4677-87e6-2b3f41e8fa2d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ad052cb9-dd81-4677-87e6-2b3f41e8fa2d" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_ad052cb9-dd81-4677-87e6-2b3f41e8fa2d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_742a17d8-ad11-45d2-939c-26f93cc63854" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_ad052cb9-dd81-4677-87e6-2b3f41e8fa2d" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_742a17d8-ad11-45d2-939c-26f93cc63854" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_8e1bfd3f-6b15-4219-975e-df2a667c71a9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_742a17d8-ad11-45d2-939c-26f93cc63854" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_8e1bfd3f-6b15-4219-975e-df2a667c71a9" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameAxis_3b398f7b-be91-46a6-bbc2-84c1ca58769f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedContributionPlanTable_6f0d415c-c087-4529-bda9-ce0cf6c76de7" xlink:to="loc_us-gaap_RetirementPlanNameAxis_3b398f7b-be91-46a6-bbc2-84c1ca58769f" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameDomain_3b398f7b-be91-46a6-bbc2-84c1ca58769f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanNameAxis_3b398f7b-be91-46a6-bbc2-84c1ca58769f" xlink:to="loc_us-gaap_RetirementPlanNameDomain_3b398f7b-be91-46a6-bbc2-84c1ca58769f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanNameDomain_35527b08-c1f7-4daf-83e3-96970d7ab384" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetirementPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanNameAxis_3b398f7b-be91-46a6-bbc2-84c1ca58769f" xlink:to="loc_us-gaap_RetirementPlanNameDomain_35527b08-c1f7-4daf-83e3-96970d7ab384" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_InternationalAssociationOfMachinistsAndAerospaceWorkersNationalPensionFundMember_f0cb0fcf-949c-4be2-bcf5-a4062aec91b4" xlink:href="aal-20211231.xsd#aal_InternationalAssociationOfMachinistsAndAerospaceWorkersNationalPensionFundMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanNameDomain_35527b08-c1f7-4daf-83e3-96970d7ab384" xlink:to="loc_aal_InternationalAssociationOfMachinistsAndAerospaceWorkersNationalPensionFundMember_f0cb0fcf-949c-4be2-bcf5-a4062aec91b4" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_2e451885-6402-4fa0-ae34-39e4f9a33a5e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DefinedContributionPlanTable_6f0d415c-c087-4529-bda9-ce0cf6c76de7" xlink:to="loc_dei_LegalEntityAxis_2e451885-6402-4fa0-ae34-39e4f9a33a5e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_2e451885-6402-4fa0-ae34-39e4f9a33a5e_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_2e451885-6402-4fa0-ae34-39e4f9a33a5e" xlink:to="loc_dei_EntityDomain_2e451885-6402-4fa0-ae34-39e4f9a33a5e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c45c3301-71f3-4365-90c3-6269a82d14b2" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_2e451885-6402-4fa0-ae34-39e4f9a33a5e" xlink:to="loc_dei_EntityDomain_c45c3301-71f3-4365-90c3-6269a82d14b2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_f0165354-8f8d-46ed-bb57-af9d07d8f958" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_c45c3301-71f3-4365-90c3-6269a82d14b2" xlink:to="loc_aal_AmericanAirlinesIncMember_f0165354-8f8d-46ed-bb57-af9d07d8f958" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/EmployeeBenefitPlansProfitSharingProgramDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#EmployeeBenefitPlansProfitSharingProgramDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/EmployeeBenefitPlansProfitSharingProgramDetails" xlink:type="extended" id="i64a6ea73ef8a4bae9d11bb358089fcc6_EmployeeBenefitPlansProfitSharingProgramDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_7e5e5096-9e2f-4751-b450-2fbcc6144fea" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProfitSharePercentage_b3a8799f-9bed-4b94-86ff-ccbb72b170ce" xlink:href="aal-20211231.xsd#aal_ProfitSharePercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_7e5e5096-9e2f-4751-b450-2fbcc6144fea" xlink:to="loc_aal_ProfitSharePercentage_b3a8799f-9bed-4b94-86ff-ccbb72b170ce" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_f91bccb9-9973-4747-bd46-bc46f44194cf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_7e5e5096-9e2f-4751-b450-2fbcc6144fea" xlink:to="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_f91bccb9-9973-4747-bd46-bc46f44194cf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_912a9091-8cd2-4e68-8ca5-1db597b51a9e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_f91bccb9-9973-4747-bd46-bc46f44194cf" xlink:to="loc_dei_LegalEntityAxis_912a9091-8cd2-4e68-8ca5-1db597b51a9e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_912a9091-8cd2-4e68-8ca5-1db597b51a9e_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_912a9091-8cd2-4e68-8ca5-1db597b51a9e" xlink:to="loc_dei_EntityDomain_912a9091-8cd2-4e68-8ca5-1db597b51a9e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f0751c6f-1090-4b5e-8671-c9dfde3fef64" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_912a9091-8cd2-4e68-8ca5-1db597b51a9e" xlink:to="loc_dei_EntityDomain_f0751c6f-1090-4b5e-8671-c9dfde3fef64" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_d452b30a-f7d7-46a6-97e4-7f0c85edd006" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f0751c6f-1090-4b5e-8671-c9dfde3fef64" xlink:to="loc_aal_AmericanAirlinesIncMember_d452b30a-f7d7-46a6-97e4-7f0c85edd006" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_38634eb8-5310-46ee-9dd3-d523e53b0e6e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_f91bccb9-9973-4747-bd46-bc46f44194cf" xlink:to="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_38634eb8-5310-46ee-9dd3-d523e53b0e6e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_38634eb8-5310-46ee-9dd3-d523e53b0e6e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_38634eb8-5310-46ee-9dd3-d523e53b0e6e" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_38634eb8-5310-46ee-9dd3-d523e53b0e6e_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_77bab15b-c74a-4233-8888-ca792a21f6e1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_38634eb8-5310-46ee-9dd3-d523e53b0e6e" xlink:to="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_77bab15b-c74a-4233-8888-ca792a21f6e1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredProfitSharingMember_7e6d130b-8bae-4964-b34a-49760c0802de" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredProfitSharingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_77bab15b-c74a-4233-8888-ca792a21f6e1" xlink:to="loc_us-gaap_DeferredProfitSharingMember_7e6d130b-8bae-4964-b34a-49760c0802de" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/AccumulatedOtherComprehensiveLoss" xlink:type="simple" xlink:href="aal-20211231.xsd#AccumulatedOtherComprehensiveLoss"/>
<link:definitionLink xlink:role="http://www.aa.com/role/AccumulatedOtherComprehensiveLoss" xlink:type="extended" id="i6a545007e2d94905a21e0b440b918b78_AccumulatedOtherComprehensiveLoss">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_e54c1800-a7c6-4c14-922a-7c29c3d5b411" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNoteTextBlock_9cd950f1-aae4-4ba6-9f4f-22061f1d8fe7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNoteTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_e54c1800-a7c6-4c14-922a-7c29c3d5b411" xlink:to="loc_us-gaap_ComprehensiveIncomeNoteTextBlock_9cd950f1-aae4-4ba6-9f4f-22061f1d8fe7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_af92f5c2-7b26-4529-8e1b-4790c7ee3025" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_e54c1800-a7c6-4c14-922a-7c29c3d5b411" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_af92f5c2-7b26-4529-8e1b-4790c7ee3025" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_da0b51e6-0c5a-4eeb-8f79-00ab799ebaac" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_af92f5c2-7b26-4529-8e1b-4790c7ee3025" xlink:to="loc_dei_LegalEntityAxis_da0b51e6-0c5a-4eeb-8f79-00ab799ebaac" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_da0b51e6-0c5a-4eeb-8f79-00ab799ebaac_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_da0b51e6-0c5a-4eeb-8f79-00ab799ebaac" xlink:to="loc_dei_EntityDomain_da0b51e6-0c5a-4eeb-8f79-00ab799ebaac_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a975b09e-0739-4b33-9c44-a3d7f4058dfb" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_da0b51e6-0c5a-4eeb-8f79-00ab799ebaac" xlink:to="loc_dei_EntityDomain_a975b09e-0739-4b33-9c44-a3d7f4058dfb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_e92f5d63-fc16-4f74-8dfb-831ec18d135f" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a975b09e-0739-4b33-9c44-a3d7f4058dfb" xlink:to="loc_aal_AmericanAirlinesIncMember_e92f5d63-fc16-4f74-8dfb-831ec18d135f" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/AccumulatedOtherComprehensiveLossTables" xlink:type="simple" xlink:href="aal-20211231.xsd#AccumulatedOtherComprehensiveLossTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/AccumulatedOtherComprehensiveLossTables" xlink:type="extended" id="i22ad86121e00468e926f335cdb2da7d0_AccumulatedOtherComprehensiveLossTables">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_6df1c7ce-b252-4fb9-8468-01456c3075d0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_d96bbb53-56c2-4aa5-abb4-7aea2402a6bd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_6df1c7ce-b252-4fb9-8468-01456c3075d0" xlink:to="loc_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_d96bbb53-56c2-4aa5-abb4-7aea2402a6bd" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_239aedff-9c8f-4c15-8113-6cf07e6d71b8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_6df1c7ce-b252-4fb9-8468-01456c3075d0" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_239aedff-9c8f-4c15-8113-6cf07e6d71b8" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_1d287cc8-9581-4bf4-8b98-32044de52f17" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_6df1c7ce-b252-4fb9-8468-01456c3075d0" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_1d287cc8-9581-4bf4-8b98-32044de52f17" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_93be67d5-7934-4518-acfa-84df0d62c996" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_1d287cc8-9581-4bf4-8b98-32044de52f17" xlink:to="loc_dei_LegalEntityAxis_93be67d5-7934-4518-acfa-84df0d62c996" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_93be67d5-7934-4518-acfa-84df0d62c996_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_93be67d5-7934-4518-acfa-84df0d62c996" xlink:to="loc_dei_EntityDomain_93be67d5-7934-4518-acfa-84df0d62c996_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4898d5b1-9468-435f-a39c-2ae716611a3f" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_93be67d5-7934-4518-acfa-84df0d62c996" xlink:to="loc_dei_EntityDomain_4898d5b1-9468-435f-a39c-2ae716611a3f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_73a46a7b-4bf4-4358-b614-a0623413a5d0" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4898d5b1-9468-435f-a39c-2ae716611a3f" xlink:to="loc_aal_AmericanAirlinesIncMember_73a46a7b-4bf4-4358-b614-a0623413a5d0" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/AccumulatedOtherComprehensiveLossComponentsofAccumulatedOtherComprehensiveLossAOCIDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#AccumulatedOtherComprehensiveLossComponentsofAccumulatedOtherComprehensiveLossAOCIDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/AccumulatedOtherComprehensiveLossComponentsofAccumulatedOtherComprehensiveLossAOCIDetails" xlink:type="extended" id="i4135c1366c1c4c2bb44df2b4e0c04e52_AccumulatedOtherComprehensiveLossComponentsofAccumulatedOtherComprehensiveLossAOCIDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_abb015ee-d86b-4795-a6d7-ef4dd2cf2076" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AociBeforeTaxAttributableToParentRollForward_37d3c963-42fb-4267-8ec4-a4829b8707cf" xlink:href="aal-20211231.xsd#aal_AociBeforeTaxAttributableToParentRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_abb015ee-d86b-4795-a6d7-ef4dd2cf2076" xlink:to="loc_aal_AociBeforeTaxAttributableToParentRollForward_37d3c963-42fb-4267-8ec4-a4829b8707cf" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociBeforeTaxAttributableToParent_ebbdbfe1-9724-4a4e-91b6-ef247227a85c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AociBeforeTaxAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_AociBeforeTaxAttributableToParentRollForward_37d3c963-42fb-4267-8ec4-a4829b8707cf" xlink:to="loc_us-gaap_AociBeforeTaxAttributableToParent_ebbdbfe1-9724-4a4e-91b6-ef247227a85c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_b8e446b1-0307-4550-9ccc-3eee8623065e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_AociBeforeTaxAttributableToParentRollForward_37d3c963-42fb-4267-8ec4-a4829b8707cf" xlink:to="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_b8e446b1-0307-4550-9ccc-3eee8623065e" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_7d0cc922-5d8a-49fc-b872-cc783ba44ce9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_AociBeforeTaxAttributableToParentRollForward_37d3c963-42fb-4267-8ec4-a4829b8707cf" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_7d0cc922-5d8a-49fc-b872-cc783ba44ce9" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1b39bae8-4e68-42a9-b324-ec692a8aff0f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_AociBeforeTaxAttributableToParentRollForward_37d3c963-42fb-4267-8ec4-a4829b8707cf" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent_1b39bae8-4e68-42a9-b324-ec692a8aff0f" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociBeforeTaxAttributableToParent_c944c8bc-3a52-4054-9bae-2c56e4c397ee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AociBeforeTaxAttributableToParent"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AociTaxAttributableToParentRollForward_bacf72dd-50db-4ef8-9fe0-64c4bf3eabe9" xlink:href="aal-20211231.xsd#aal_AociTaxAttributableToParentRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_abb015ee-d86b-4795-a6d7-ef4dd2cf2076" xlink:to="loc_aal_AociTaxAttributableToParentRollForward_bacf72dd-50db-4ef8-9fe0-64c4bf3eabe9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociTaxAttributableToParent_bb5351e0-bbd6-4de9-9f26-858524cc4239" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AociTaxAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_AociTaxAttributableToParentRollForward_bacf72dd-50db-4ef8-9fe0-64c4bf3eabe9" xlink:to="loc_us-gaap_AociTaxAttributableToParent_bb5351e0-bbd6-4de9-9f26-858524cc4239" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_482f0e9f-1454-403f-9ad7-d18c27190b7d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_AociTaxAttributableToParentRollForward_bacf72dd-50db-4ef8-9fe0-64c4bf3eabe9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_482f0e9f-1454-403f-9ad7-d18c27190b7d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_547e3077-e198-4732-a07d-4c52a7ae6ef0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_AociTaxAttributableToParentRollForward_bacf72dd-50db-4ef8-9fe0-64c4bf3eabe9" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_547e3077-e198-4732-a07d-4c52a7ae6ef0" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTax_fa619b37-fade-4934-9800-cdb347884717" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_AociTaxAttributableToParentRollForward_bacf72dd-50db-4ef8-9fe0-64c4bf3eabe9" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTax_fa619b37-fade-4934-9800-cdb347884717" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociTaxAttributableToParent_ecf7f492-f3e6-485e-a73b-fc47a4a6718c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AociTaxAttributableToParent"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90d9d13b-cae4-4a83-a0da-f59fadc1c698" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_abb015ee-d86b-4795-a6d7-ef4dd2cf2076" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90d9d13b-cae4-4a83-a0da-f59fadc1c698" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_875f66ab-948f-4f41-9443-e61e32bb29a5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90d9d13b-cae4-4a83-a0da-f59fadc1c698" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_875f66ab-948f-4f41-9443-e61e32bb29a5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_b3161967-4af2-4dc6-9429-3a9825f8c2c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90d9d13b-cae4-4a83-a0da-f59fadc1c698" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_b3161967-4af2-4dc6-9429-3a9825f8c2c7" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_5cb2ee1f-eafb-4c2c-920f-dcdf236cb862" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90d9d13b-cae4-4a83-a0da-f59fadc1c698" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_5cb2ee1f-eafb-4c2c-920f-dcdf236cb862" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_8e8b6c27-a5eb-422c-99f0-bf2515e3d54a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_90d9d13b-cae4-4a83-a0da-f59fadc1c698" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_8e8b6c27-a5eb-422c-99f0-bf2515e3d54a" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_8aef2d45-0797-41df-a617-369bfbf76d71" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_999fe875-ac7f-4c1a-be05-cad1587ea178" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_abb015ee-d86b-4795-a6d7-ef4dd2cf2076" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_999fe875-ac7f-4c1a-be05-cad1587ea178" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a664f450-ad74-49e0-badb-5ef41d452563" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_999fe875-ac7f-4c1a-be05-cad1587ea178" xlink:to="loc_dei_LegalEntityAxis_a664f450-ad74-49e0-badb-5ef41d452563" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a664f450-ad74-49e0-badb-5ef41d452563_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a664f450-ad74-49e0-badb-5ef41d452563" xlink:to="loc_dei_EntityDomain_a664f450-ad74-49e0-badb-5ef41d452563_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_0fd09a3c-5863-4eac-8da5-a4a39d619f94" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a664f450-ad74-49e0-badb-5ef41d452563" xlink:to="loc_dei_EntityDomain_0fd09a3c-5863-4eac-8da5-a4a39d619f94" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_d52338f0-fb55-41c2-8faf-0021686cc141" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_0fd09a3c-5863-4eac-8da5-a4a39d619f94" xlink:to="loc_aal_AmericanAirlinesIncMember_d52338f0-fb55-41c2-8faf-0021686cc141" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_c5d270dc-5615-48cc-b150-bbde7d6f64b3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_999fe875-ac7f-4c1a-be05-cad1587ea178" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_c5d270dc-5615-48cc-b150-bbde7d6f64b3" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_c5d270dc-5615-48cc-b150-bbde7d6f64b3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_c5d270dc-5615-48cc-b150-bbde7d6f64b3" xlink:to="loc_us-gaap_EquityComponentDomain_c5d270dc-5615-48cc-b150-bbde7d6f64b3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_5db51a47-d523-4997-b355-95b0f2039c5c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_c5d270dc-5615-48cc-b150-bbde7d6f64b3" xlink:to="loc_us-gaap_EquityComponentDomain_5db51a47-d523-4997-b355-95b0f2039c5c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_1118dcfc-8dfe-430f-9f9f-b294c1acc028" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5db51a47-d523-4997-b355-95b0f2039c5c" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_1118dcfc-8dfe-430f-9f9f-b294c1acc028" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_1c8129d3-62ce-4dbd-9e04-a23f9254d429" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_5db51a47-d523-4997-b355-95b0f2039c5c" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_1c8129d3-62ce-4dbd-9e04-a23f9254d429" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/AccumulatedOtherComprehensiveLossReclassificationsoutofAOCIDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#AccumulatedOtherComprehensiveLossReclassificationsoutofAOCIDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/AccumulatedOtherComprehensiveLossReclassificationsoutofAOCIDetails" xlink:type="extended" id="i4541c977fe1a4a6a8705d108ec3a4bde_AccumulatedOtherComprehensiveLossReclassificationsoutofAOCIDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_7351f2c5-bee3-4220-ace0-71af1b22a748" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_4fdfc461-9335-4e86-8f8b-06444471511f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_7351f2c5-bee3-4220-ace0-71af1b22a748" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_4fdfc461-9335-4e86-8f8b-06444471511f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_430b689d-6205-45d5-9066-d079e1be8e2b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems_7351f2c5-bee3-4220-ace0-71af1b22a748" xlink:to="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_430b689d-6205-45d5-9066-d079e1be8e2b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_bb58d1a5-e41a-4c70-a903-40635a3eed80" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_430b689d-6205-45d5-9066-d079e1be8e2b" xlink:to="loc_dei_LegalEntityAxis_bb58d1a5-e41a-4c70-a903-40635a3eed80" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bb58d1a5-e41a-4c70-a903-40635a3eed80_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_bb58d1a5-e41a-4c70-a903-40635a3eed80" xlink:to="loc_dei_EntityDomain_bb58d1a5-e41a-4c70-a903-40635a3eed80_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_f06182f5-f9e1-4904-a60f-dd24e7985441" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_bb58d1a5-e41a-4c70-a903-40635a3eed80" xlink:to="loc_dei_EntityDomain_f06182f5-f9e1-4904-a60f-dd24e7985441" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_2d6ab7e2-f1c2-4074-a9c0-054dbcecd20e" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_f06182f5-f9e1-4904-a60f-dd24e7985441" xlink:to="loc_aal_AmericanAirlinesIncMember_2d6ab7e2-f1c2-4074-a9c0-054dbcecd20e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_60b6f66a-c59e-4b92-806e-038470f667aa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StatementEquityComponentsAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_430b689d-6205-45d5-9066-d079e1be8e2b" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_60b6f66a-c59e-4b92-806e-038470f667aa" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_60b6f66a-c59e-4b92-806e-038470f667aa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_60b6f66a-c59e-4b92-806e-038470f667aa" xlink:to="loc_us-gaap_EquityComponentDomain_60b6f66a-c59e-4b92-806e-038470f667aa_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_0c8481c5-8212-48bb-913e-20cf12d434e7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityComponentDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_60b6f66a-c59e-4b92-806e-038470f667aa" xlink:to="loc_us-gaap_EquityComponentDomain_0c8481c5-8212-48bb-913e-20cf12d434e7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_0a88e292-ea99-4758-9d5f-83543127f098" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0c8481c5-8212-48bb-913e-20cf12d434e7" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetPriorServiceCostCreditMember_0a88e292-ea99-4758-9d5f-83543127f098" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_930b42e3-cd7a-4da0-935e-50e33bae47af" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_0c8481c5-8212-48bb-913e-20cf12d434e7" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentNetUnamortizedGainLossMember_930b42e3-cd7a-4da0-935e-50e33bae47af" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/CommitmentsContingenciesandGuarantees" xlink:type="simple" xlink:href="aal-20211231.xsd#CommitmentsContingenciesandGuarantees"/>
<link:definitionLink xlink:role="http://www.aa.com/role/CommitmentsContingenciesandGuarantees" xlink:type="extended" id="i39155c25c7664a9081d2274c0eaa216a_CommitmentsContingenciesandGuarantees">
<link:loc xlink:type="locator" xlink:label="loc_aal_CommitmentsandContingenciesLineItems_b31818d4-d6a1-46d4-8996-9ef2f7b093e5" xlink:href="aal-20211231.xsd#aal_CommitmentsandContingenciesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsContingenciesAndGuaranteesTextBlock_9178f408-83c2-4e87-b32e-4113c6ca1a57" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommitmentsContingenciesAndGuaranteesTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_CommitmentsandContingenciesLineItems_b31818d4-d6a1-46d4-8996-9ef2f7b093e5" xlink:to="loc_us-gaap_CommitmentsContingenciesAndGuaranteesTextBlock_9178f408-83c2-4e87-b32e-4113c6ca1a57" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommitmentsandContingenciesTable_2a4e8b6f-574b-4f10-8c35-214e1d4577e6" xlink:href="aal-20211231.xsd#aal_CommitmentsandContingenciesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_CommitmentsandContingenciesLineItems_b31818d4-d6a1-46d4-8996-9ef2f7b093e5" xlink:to="loc_aal_CommitmentsandContingenciesTable_2a4e8b6f-574b-4f10-8c35-214e1d4577e6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8a0f5ae3-16c8-4a43-8104-929ff024e677" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_CommitmentsandContingenciesTable_2a4e8b6f-574b-4f10-8c35-214e1d4577e6" xlink:to="loc_dei_LegalEntityAxis_8a0f5ae3-16c8-4a43-8104-929ff024e677" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8a0f5ae3-16c8-4a43-8104-929ff024e677_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8a0f5ae3-16c8-4a43-8104-929ff024e677" xlink:to="loc_dei_EntityDomain_8a0f5ae3-16c8-4a43-8104-929ff024e677_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_37f70ae0-84d8-40df-9bc9-5c26f804ef44" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8a0f5ae3-16c8-4a43-8104-929ff024e677" xlink:to="loc_dei_EntityDomain_37f70ae0-84d8-40df-9bc9-5c26f804ef44" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_6ab65547-69ea-4052-9a51-96f57e986412" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_37f70ae0-84d8-40df-9bc9-5c26f804ef44" xlink:to="loc_aal_AmericanAirlinesIncMember_6ab65547-69ea-4052-9a51-96f57e986412" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/CommitmentsContingenciesandGuaranteesTables" xlink:type="simple" xlink:href="aal-20211231.xsd#CommitmentsContingenciesandGuaranteesTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/CommitmentsContingenciesandGuaranteesTables" xlink:type="extended" id="i4b987ccebf0b4997b845830745298028_CommitmentsContingenciesandGuaranteesTables">
<link:loc xlink:type="locator" xlink:label="loc_aal_CommitmentsandContingenciesLineItems_f45658be-aaf2-4d49-9940-344fee57946f" xlink:href="aal-20211231.xsd#aal_CommitmentsandContingenciesLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentTextBlock_9431f5a4-7d55-472e-a103-49e7302d86bd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermPurchaseCommitmentTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_CommitmentsandContingenciesLineItems_f45658be-aaf2-4d49-9940-344fee57946f" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentTextBlock_9431f5a4-7d55-472e-a103-49e7302d86bd" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationsDisclosureTextBlock_9acdd300-b8e6-4868-ad14-cfaefef189ac" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationsDisclosureTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_CommitmentsandContingenciesLineItems_f45658be-aaf2-4d49-9940-344fee57946f" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationsDisclosureTextBlock_9acdd300-b8e6-4868-ad14-cfaefef189ac" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommitmentsandContingenciesTable_cca0c379-1459-4a14-a493-7e559c7c439a" xlink:href="aal-20211231.xsd#aal_CommitmentsandContingenciesTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_aal_CommitmentsandContingenciesLineItems_f45658be-aaf2-4d49-9940-344fee57946f" xlink:to="loc_aal_CommitmentsandContingenciesTable_cca0c379-1459-4a14-a493-7e559c7c439a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_dc916cad-d97f-4b67-ad5c-1e1e0d6be62d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_aal_CommitmentsandContingenciesTable_cca0c379-1459-4a14-a493-7e559c7c439a" xlink:to="loc_dei_LegalEntityAxis_dc916cad-d97f-4b67-ad5c-1e1e0d6be62d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_dc916cad-d97f-4b67-ad5c-1e1e0d6be62d_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_dc916cad-d97f-4b67-ad5c-1e1e0d6be62d" xlink:to="loc_dei_EntityDomain_dc916cad-d97f-4b67-ad5c-1e1e0d6be62d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e759d26a-bef9-468a-97f9-9d3cff5d64a7" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_dc916cad-d97f-4b67-ad5c-1e1e0d6be62d" xlink:to="loc_dei_EntityDomain_e759d26a-bef9-468a-97f9-9d3cff5d64a7" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_056ca326-940a-446a-9d4a-b441ba1371fe" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_e759d26a-bef9-468a-97f9-9d3cff5d64a7" xlink:to="loc_aal_AmericanAirlinesIncMember_056ca326-940a-446a-9d4a-b441ba1371fe" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/CommitmentsContingenciesandGuaranteesAircraftEngineandOtherPurchaseCommitmentsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#CommitmentsContingenciesandGuaranteesAircraftEngineandOtherPurchaseCommitmentsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/CommitmentsContingenciesandGuaranteesAircraftEngineandOtherPurchaseCommitmentsDetails" xlink:type="extended" id="ibebd52e1f9e74522a71998d3de3ce989_CommitmentsContingenciesandGuaranteesAircraftEngineandOtherPurchaseCommitmentsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentLineItems_14446407-f0e2-4547-85e1-faf3b8b4d365" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermPurchaseCommitmentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationFiscalYearMaturityAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_14446407-f0e2-4547-85e1-faf3b8b4d365" xlink:to="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInNextTwelveMonths_73b1c53c-4fd6-4c3d-818e-c649040a48b4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_us-gaap_PurchaseObligationDueInNextTwelveMonths_73b1c53c-4fd6-4c3d-818e-c649040a48b4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInSecondYear_f880673d-2e61-4619-a6e0-9ed9a1255d34" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInSecondYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_us-gaap_PurchaseObligationDueInSecondYear_f880673d-2e61-4619-a6e0-9ed9a1255d34" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInThirdYear_5fb1542c-33aa-4404-8150-787df581798a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInThirdYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_us-gaap_PurchaseObligationDueInThirdYear_5fb1542c-33aa-4404-8150-787df581798a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInFourthYear_9c53a0ab-a40f-4648-a2e1-2ffb561bf4e3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInFourthYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_us-gaap_PurchaseObligationDueInFourthYear_9c53a0ab-a40f-4648-a2e1-2ffb561bf4e3" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInFifthYear_2b4f878d-8027-4744-bf91-b70fae81c1cd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInFifthYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_us-gaap_PurchaseObligationDueInFifthYear_2b4f878d-8027-4744-bf91-b70fae81c1cd" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueAfterFifthYear_3123ea4c-7787-4e98-ab9f-f718c1866758" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueAfterFifthYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_us-gaap_PurchaseObligationDueAfterFifthYear_3123ea4c-7787-4e98-ab9f-f718c1866758" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligation_7ca6f007-0857-4afe-80c1-1feda61f5bf5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_us-gaap_PurchaseObligation_7ca6f007-0857-4afe-80c1-1feda61f5bf5" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsOnFlightEquipment_0053f9bd-31f9-4c20-a678-4ed5641b352d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepositsOnFlightEquipment"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_us-gaap_DepositsOnFlightEquipment_0053f9bd-31f9-4c20-a678-4ed5641b352d" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThroughTheConversionOfExistingPurchaseOption_5d768e49-6d83-4d20-ac17-73d5913dbd09" xlink:href="aal-20211231.xsd#aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThroughTheConversionOfExistingPurchaseOption"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThroughTheConversionOfExistingPurchaseOption_5d768e49-6d83-4d20-ac17-73d5913dbd09" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThoughExercisingPurchaseOptions_5cbe1ea5-6fb3-4869-a80e-3523156bdde0" xlink:href="aal-20211231.xsd#aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThoughExercisingPurchaseOptions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThoughExercisingPurchaseOptions_5cbe1ea5-6fb3-4869-a80e-3523156bdde0" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PurchaseCommitmentAdditionalNumberOfAircraftsToBePurchased_45fb2b04-7890-4fc8-874c-3b7f412c025f" xlink:href="aal-20211231.xsd#aal_PurchaseCommitmentAdditionalNumberOfAircraftsToBePurchased"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_aal_PurchaseCommitmentAdditionalNumberOfAircraftsToBePurchased_45fb2b04-7890-4fc8-874c-3b7f412c025f" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodTwo_d70cb0c2-9758-4d1b-a217-a60fa0c14836" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodTwo_d70cb0c2-9758-4d1b-a217-a60fa0c14836" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodThree_75d0fd74-a350-4c56-896c-42f56c0fdce3" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodThree_75d0fd74-a350-4c56-896c-42f56c0fdce3" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodOne_66ab27da-7c1f-4fb8-98e1-76ace1d8bd41" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodOne"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PurchaseObligationFiscalYearMaturityAbstract_1b940619-a464-484e-b02f-775d3a0f1bdc" xlink:to="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodOne_66ab27da-7c1f-4fb8-98e1-76ace1d8bd41" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_25ea6a6d-3449-493f-8788-dfbd891fcbe3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_14446407-f0e2-4547-85e1-faf3b8b4d365" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_25ea6a6d-3449-493f-8788-dfbd891fcbe3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary_048f710f-87b4-45bf-9030-63c8b6916b9e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_25ea6a6d-3449-493f-8788-dfbd891fcbe3" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFirstAnniversary_048f710f-87b4-45bf-9030-63c8b6916b9e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary_eedfbb36-d78e-47bf-a677-46a1c73e40d8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_25ea6a6d-3449-493f-8788-dfbd891fcbe3" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary_eedfbb36-d78e-47bf-a677-46a1c73e40d8" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary_e4042226-c0dd-4a34-96c2-1b0c6d71da63" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_25ea6a6d-3449-493f-8788-dfbd891fcbe3" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary_e4042226-c0dd-4a34-96c2-1b0c6d71da63" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary_eb890f4c-ecbd-48ca-8499-f3ddd7cfff44" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_25ea6a6d-3449-493f-8788-dfbd891fcbe3" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary_eb890f4c-ecbd-48ca-8499-f3ddd7cfff44" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary_50fcfc44-4eb6-4bf1-a9e8-427f9e0c4c38" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_25ea6a6d-3449-493f-8788-dfbd891fcbe3" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary_50fcfc44-4eb6-4bf1-a9e8-427f9e0c4c38" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears_e2627b33-896b-4f37-9e32-9ade47bd6475" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_25ea6a6d-3449-493f-8788-dfbd891fcbe3" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears_e2627b33-896b-4f37-9e32-9ade47bd6475" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentTable_bb714bdb-645d-4583-8fb7-df753dd6e974" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermPurchaseCommitmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_14446407-f0e2-4547-85e1-faf3b8b4d365" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentTable_bb714bdb-645d-4583-8fb7-df753dd6e974" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_bea33c02-7ef4-4243-858f-ae25a6b4776d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_bb714bdb-645d-4583-8fb7-df753dd6e974" xlink:to="loc_dei_LegalEntityAxis_bea33c02-7ef4-4243-858f-ae25a6b4776d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_bea33c02-7ef4-4243-858f-ae25a6b4776d_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_bea33c02-7ef4-4243-858f-ae25a6b4776d" xlink:to="loc_dei_EntityDomain_bea33c02-7ef4-4243-858f-ae25a6b4776d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4a2d17a8-2897-4965-a972-db206d39602f" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_bea33c02-7ef4-4243-858f-ae25a6b4776d" xlink:to="loc_dei_EntityDomain_4a2d17a8-2897-4965-a972-db206d39602f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_60d92ba1-3dbc-4f2e-97ed-f8328abe1ab8" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4a2d17a8-2897-4965-a972-db206d39602f" xlink:to="loc_aal_AmericanAirlinesIncMember_60d92ba1-3dbc-4f2e-97ed-f8328abe1ab8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_68515184-7906-4ec0-90bb-e3d3644e57cd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_bb714bdb-645d-4583-8fb7-df753dd6e974" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_68515184-7906-4ec0-90bb-e3d3644e57cd" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_68515184-7906-4ec0-90bb-e3d3644e57cd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_68515184-7906-4ec0-90bb-e3d3644e57cd" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_68515184-7906-4ec0-90bb-e3d3644e57cd_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_4f69493e-4c77-4d29-aa26-2db0770d1ffa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_68515184-7906-4ec0-90bb-e3d3644e57cd" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_4f69493e-4c77-4d29-aa26-2db0770d1ffa" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PurchaseAndLeaseCommitmentsMember_735e6fce-5082-45ed-ae2f-0913c31d701d" xlink:href="aal-20211231.xsd#aal_PurchaseAndLeaseCommitmentsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_4f69493e-4c77-4d29-aa26-2db0770d1ffa" xlink:to="loc_aal_PurchaseAndLeaseCommitmentsMember_735e6fce-5082-45ed-ae2f-0913c31d701d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_c59013b2-5c01-489a-bd8e-aed00d52f8ee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_bb714bdb-645d-4583-8fb7-df753dd6e974" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_c59013b2-5c01-489a-bd8e-aed00d52f8ee" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_c59013b2-5c01-489a-bd8e-aed00d52f8ee_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_c59013b2-5c01-489a-bd8e-aed00d52f8ee" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_c59013b2-5c01-489a-bd8e-aed00d52f8ee_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_a4c0c256-5168-426d-9fcc-d194d1b1354a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_c59013b2-5c01-489a-bd8e-aed00d52f8ee" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_a4c0c256-5168-426d-9fcc-d194d1b1354a" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_JetFuelFacilityConstructionProjectsandInformationTechnologySupportMember_3029a6bf-47fa-43db-93d3-5d158a491d47" xlink:href="aal-20211231.xsd#aal_JetFuelFacilityConstructionProjectsandInformationTechnologySupportMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_a4c0c256-5168-426d-9fcc-d194d1b1354a" xlink:to="loc_aal_JetFuelFacilityConstructionProjectsandInformationTechnologySupportMember_3029a6bf-47fa-43db-93d3-5d158a491d47" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_AircraftTypeAxis_933a0abe-801c-4a9a-a0cf-e1d1cad67d08" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_AircraftTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_bb714bdb-645d-4583-8fb7-df753dd6e974" xlink:to="loc_srt_AircraftTypeAxis_933a0abe-801c-4a9a-a0cf-e1d1cad67d08" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_AircraftTypeMember_933a0abe-801c-4a9a-a0cf-e1d1cad67d08_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_AircraftTypeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_AircraftTypeAxis_933a0abe-801c-4a9a-a0cf-e1d1cad67d08" xlink:to="loc_srt_AircraftTypeMember_933a0abe-801c-4a9a-a0cf-e1d1cad67d08_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_AircraftTypeMember_be18e782-caf9-47e0-880b-980a701a7bcf" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_AircraftTypeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_AircraftTypeAxis_933a0abe-801c-4a9a-a0cf-e1d1cad67d08" xlink:to="loc_srt_AircraftTypeMember_be18e782-caf9-47e0-880b-980a701a7bcf" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_Boeing737MaxMember_6f1ecd8d-244e-4f5b-8a6c-55b23e5241fa" xlink:href="aal-20211231.xsd#aal_Boeing737MaxMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_be18e782-caf9-47e0-880b-980a701a7bcf" xlink:to="loc_aal_Boeing737MaxMember_6f1ecd8d-244e-4f5b-8a6c-55b23e5241fa" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_B7878Member_f19b0648-e617-4be7-bfe6-4fde236ed5c4" xlink:href="aal-20211231.xsd#aal_B7878Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_be18e782-caf9-47e0-880b-980a701a7bcf" xlink:to="loc_aal_B7878Member_f19b0648-e617-4be7-bfe6-4fde236ed5c4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_B7879Member_91282309-8d24-47c0-875f-97aafb2b85ba" xlink:href="aal-20211231.xsd#aal_B7879Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_be18e782-caf9-47e0-880b-980a701a7bcf" xlink:to="loc_aal_B7879Member_91282309-8d24-47c0-875f-97aafb2b85ba" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_f8e94105-c53b-4b83-8563-c08a9585efdf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_bb714bdb-645d-4583-8fb7-df753dd6e974" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_f8e94105-c53b-4b83-8563-c08a9585efdf" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_f8e94105-c53b-4b83-8563-c08a9585efdf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_f8e94105-c53b-4b83-8563-c08a9585efdf" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_f8e94105-c53b-4b83-8563-c08a9585efdf_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_36b1f5ee-89ac-4647-a2c6-ef9a40b94517" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_f8e94105-c53b-4b83-8563-c08a9585efdf" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_36b1f5ee-89ac-4647-a2c6-ef9a40b94517" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_622aa09d-7c4e-44ef-8ff4-271f77153f66" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_36b1f5ee-89ac-4647-a2c6-ef9a40b94517" xlink:to="loc_us-gaap_SubsequentEventMember_622aa09d-7c4e-44ef-8ff4-271f77153f66" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/CommitmentsContingenciesandGuaranteesCapacityPurchaseAgreementsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#CommitmentsContingenciesandGuaranteesCapacityPurchaseAgreementsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/CommitmentsContingenciesandGuaranteesCapacityPurchaseAgreementsDetails" xlink:type="extended" id="i5e269fae3cd34898bd75aa102bb920a7_CommitmentsContingenciesandGuaranteesCapacityPurchaseAgreementsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ReimbursementReceivablePercentageUnderAgreement_8194b640-f416-4182-be5a-96397a990fd5" xlink:href="aal-20211231.xsd#aal_ReimbursementReceivablePercentageUnderAgreement"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:to="loc_aal_ReimbursementReceivablePercentageUnderAgreement_8194b640-f416-4182-be5a-96397a990fd5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInNextTwelveMonths_d6222dbc-2455-4069-93c8-eb0d09f7723e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInNextTwelveMonths"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:to="loc_us-gaap_PurchaseObligationDueInNextTwelveMonths_d6222dbc-2455-4069-93c8-eb0d09f7723e" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInSecondYear_baa6d3e2-daea-4bee-845d-6e79b56923fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInSecondYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:to="loc_us-gaap_PurchaseObligationDueInSecondYear_baa6d3e2-daea-4bee-845d-6e79b56923fd" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInThirdYear_62335508-9478-4c26-9f79-5a1b8d3895c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInThirdYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:to="loc_us-gaap_PurchaseObligationDueInThirdYear_62335508-9478-4c26-9f79-5a1b8d3895c3" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInFourthYear_8ed6eb63-4ff0-4463-bc0f-603ec219c7d9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInFourthYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:to="loc_us-gaap_PurchaseObligationDueInFourthYear_8ed6eb63-4ff0-4463-bc0f-603ec219c7d9" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueInFifthYear_bdf30cb5-da94-4fb7-81e9-434dcabaf905" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueInFifthYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:to="loc_us-gaap_PurchaseObligationDueInFifthYear_bdf30cb5-da94-4fb7-81e9-434dcabaf905" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligationDueAfterFifthYear_5aad1b76-748a-4da6-9bf8-4d11e08090ad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligationDueAfterFifthYear"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:to="loc_us-gaap_PurchaseObligationDueAfterFifthYear_5aad1b76-748a-4da6-9bf8-4d11e08090ad" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PurchaseObligation_5502fc3d-d30d-4bfc-b034-c224e7678b98" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PurchaseObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:to="loc_us-gaap_PurchaseObligation_5502fc3d-d30d-4bfc-b034-c224e7678b98" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_0a447cda-a420-49de-ba83-f6e2fec4afb8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_8397a80c-004a-42e7-b6a6-b9dff3943bd3" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_0a447cda-a420-49de-ba83-f6e2fec4afb8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_8d4f70b5-1436-46fa-88ff-0ac07b09a174" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_0a447cda-a420-49de-ba83-f6e2fec4afb8" xlink:to="loc_dei_LegalEntityAxis_8d4f70b5-1436-46fa-88ff-0ac07b09a174" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_8d4f70b5-1436-46fa-88ff-0ac07b09a174_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_8d4f70b5-1436-46fa-88ff-0ac07b09a174" xlink:to="loc_dei_EntityDomain_8d4f70b5-1436-46fa-88ff-0ac07b09a174_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_da277612-a829-45d7-a6d0-6d4e0a9b93ba" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_8d4f70b5-1436-46fa-88ff-0ac07b09a174" xlink:to="loc_dei_EntityDomain_da277612-a829-45d7-a6d0-6d4e0a9b93ba" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_ea0e13eb-0068-4a3a-9ae4-e77f22a4c029" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_da277612-a829-45d7-a6d0-6d4e0a9b93ba" xlink:to="loc_aal_AmericanAirlinesIncMember_ea0e13eb-0068-4a3a-9ae4-e77f22a4c029" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_a8758e81-7889-4c04-b67b-a524c363cee3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_0a447cda-a420-49de-ba83-f6e2fec4afb8" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_a8758e81-7889-4c04-b67b-a524c363cee3" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_a8758e81-7889-4c04-b67b-a524c363cee3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_a8758e81-7889-4c04-b67b-a524c363cee3" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_a8758e81-7889-4c04-b67b-a524c363cee3_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_301eddab-079a-4d35-89fd-52ea150e1685" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_a8758e81-7889-4c04-b67b-a524c363cee3" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_301eddab-079a-4d35-89fd-52ea150e1685" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineCapacityPurchaseArrangementsMember_1034787d-3879-40e1-bc5b-e2765d92a408" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineCapacityPurchaseArrangementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_301eddab-079a-4d35-89fd-52ea150e1685" xlink:to="loc_us-gaap_AirlineCapacityPurchaseArrangementsMember_1034787d-3879-40e1-bc5b-e2765d92a408" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/CommitmentsContingenciesandGuaranteesAdditionalInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#CommitmentsContingenciesandGuaranteesAdditionalInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/CommitmentsContingenciesandGuaranteesAdditionalInformationDetails" xlink:type="extended" id="i82ebb040a12f4e1186ff08121472318c_CommitmentsContingenciesandGuaranteesAdditionalInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermPurchaseCommitmentLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PropertyPlantEquipmentExpectedCost_ec4f5c2f-8ae8-401d-b504-60e5d6e4aee5" xlink:href="aal-20211231.xsd#aal_PropertyPlantEquipmentExpectedCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_PropertyPlantEquipmentExpectedCost_ec4f5c2f-8ae8-401d-b504-60e5d6e4aee5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AirportRedevelopmentNumberOfSecurityScreenLanes_f38d126f-2a79-4ae3-9456-1492b5ac20f9" xlink:href="aal-20211231.xsd#aal_AirportRedevelopmentNumberOfSecurityScreenLanes"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_AirportRedevelopmentNumberOfSecurityScreenLanes_f38d126f-2a79-4ae3-9456-1492b5ac20f9" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PropertyPlantEquipmentCostIncurredToDate_80c4aa99-4750-44af-a957-7fceca50bb8d" xlink:href="aal-20211231.xsd#aal_PropertyPlantEquipmentCostIncurredToDate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_PropertyPlantEquipmentCostIncurredToDate_80c4aa99-4750-44af-a957-7fceca50bb8d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PropertyPlantEquipmentIncurredCost_70f50223-6d58-42fd-8d12-15ab8ced6c97" xlink:href="aal-20211231.xsd#aal_PropertyPlantEquipmentIncurredCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_PropertyPlantEquipmentIncurredCost_70f50223-6d58-42fd-8d12-15ab8ced6c97" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PropertyPlantAndEquipmentAccumulatedDisposals_56af6697-6776-4863-a91a-fa1119af6dad" xlink:href="aal-20211231.xsd#aal_PropertyPlantAndEquipmentAccumulatedDisposals"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_PropertyPlantAndEquipmentAccumulatedDisposals_56af6697-6776-4863-a91a-fa1119af6dad" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentDisposals_18d7d78a-e361-4af7-b42a-10cd84fef436" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisposals"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentDisposals_18d7d78a-e361-4af7-b42a-10cd84fef436" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ProceedsFromPrepaymentForConstruction_4eb346ca-aa9a-43aa-bad6-4622536338d1" xlink:href="aal-20211231.xsd#aal_ProceedsFromPrepaymentForConstruction"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_ProceedsFromPrepaymentForConstruction_4eb346ca-aa9a-43aa-bad6-4622536338d1" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_53291a19-80ac-4d98-b654-06938940d47b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AreaOfRealEstateProperty"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_us-gaap_AreaOfRealEstateProperty_53291a19-80ac-4d98-b654-06938940d47b" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ConstructionProjectExpectedCost_2c6b7a6d-128a-455c-bdc9-bf802c7eacc0" xlink:href="aal-20211231.xsd#aal_ConstructionProjectExpectedCost"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_ConstructionProjectExpectedCost_2c6b7a6d-128a-455c-bdc9-bf802c7eacc0" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForConstructionInProcess_dbd0f1e0-e3e3-445e-a5ef-ef01ba1da103" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForConstructionInProcess"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_us-gaap_PaymentsForConstructionInProcess_dbd0f1e0-e3e3-445e-a5ef-ef01ba1da103" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftOwnedEnhancedEquipmentTrustCertificate_b93367e7-20db-485e-acb0-7ddb4d3afdd6" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftOwnedEnhancedEquipmentTrustCertificate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_NumberOfAircraftOwnedEnhancedEquipmentTrustCertificate_b93367e7-20db-485e-acb0-7ddb4d3afdd6" xlink:type="arc" order="10"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfOperatingAircraftLeasedFromTrustsInWhichCompanyHoldsSignificantVariableInterest_4103caea-f2bd-465b-abfd-15e0bf7385c5" xlink:href="aal-20211231.xsd#aal_NumberOfOperatingAircraftLeasedFromTrustsInWhichCompanyHoldsSignificantVariableInterest"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_NumberOfOperatingAircraftLeasedFromTrustsInWhichCompanyHoldsSignificantVariableInterest_4103caea-f2bd-465b-abfd-15e0bf7385c5" xlink:type="arc" order="11"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfSpareAircraftEnginesOwnedEnhancedEquipmentTrustCertificate_7e9af6d5-031b-4148-85bc-f48fcd75fe35" xlink:href="aal-20211231.xsd#aal_NumberOfSpareAircraftEnginesOwnedEnhancedEquipmentTrustCertificate"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_NumberOfSpareAircraftEnginesOwnedEnhancedEquipmentTrustCertificate_7e9af6d5-031b-4148-85bc-f48fcd75fe35" xlink:type="arc" order="12"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_9669a25e-6187-4a1a-8a58-92fa141ee922" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_9669a25e-6187-4a1a-8a58-92fa141ee922" xlink:type="arc" order="13"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_1844c885-605d-4f6d-9e5b-978131fb9b49" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_us-gaap_OperatingLeaseLiability_1844c885-605d-4f6d-9e5b-978131fb9b49" xlink:type="arc" order="14"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LettersofCreditOutstandingandSuretyBondsAmount_e14562c2-1e71-429c-a1b0-19752c776c25" xlink:href="aal-20211231.xsd#aal_LettersofCreditOutstandingandSuretyBondsAmount"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_LettersofCreditOutstandingandSuretyBondsAmount_e14562c2-1e71-429c-a1b0-19752c776c25" xlink:type="arc" order="15"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommonStockCapitalSharesDistributedFromDisputedClaimsReserve_3d594109-4c87-4c14-bed0-0c7c1c395b84" xlink:href="aal-20211231.xsd#aal_CommonStockCapitalSharesDistributedFromDisputedClaimsReserve"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_CommonStockCapitalSharesDistributedFromDisputedClaimsReserve_3d594109-4c87-4c14-bed0-0c7c1c395b84" xlink:type="arc" order="16"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CommonStockCapitalSharesReservedForIssuanceInDisputedClaimsReserve_667f5f06-8015-4be2-b4a3-96218385d6d2" xlink:href="aal-20211231.xsd#aal_CommonStockCapitalSharesReservedForIssuanceInDisputedClaimsReserve"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_CommonStockCapitalSharesReservedForIssuanceInDisputedClaimsReserve_667f5f06-8015-4be2-b4a3-96218385d6d2" xlink:type="arc" order="17"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfPutativeClassActionLawsuits_7ce6764f-8446-4aeb-9155-a85183b5624f" xlink:href="aal-20211231.xsd#aal_NumberOfPutativeClassActionLawsuits"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_NumberOfPutativeClassActionLawsuits_7ce6764f-8446-4aeb-9155-a85183b5624f" xlink:type="arc" order="18"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_1f10a224-3d1f-46ff-ae44-d4ca4a5e42a8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_1f10a224-3d1f-46ff-ae44-d4ca4a5e42a8" xlink:type="arc" order="19"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_GuaranteeObligationsMaximumExposure_a80b8fa2-6c07-46c0-8141-1bb87c0276db" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GuaranteeObligationsMaximumExposure"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_us-gaap_GuaranteeObligationsMaximumExposure_a80b8fa2-6c07-46c0-8141-1bb87c0276db" xlink:type="arc" order="20"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_683de426-840d-4bf4-bd7b-fc38f0cd8282" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_683de426-840d-4bf4-bd7b-fc38f0cd8282" xlink:type="arc" order="21"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityNumberOfEmployees_2ac6a1ff-bf1c-4856-bfd6-15c3c3477e7e" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityNumberOfEmployees"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_dei_EntityNumberOfEmployees_2ac6a1ff-bf1c-4856-bfd6-15c3c3477e7e" xlink:type="arc" order="22"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CollectiveBargainingArrangementPercentageofEmployersParticipants_40042bce-d2f6-46a8-917a-aef67df24658" xlink:href="aal-20211231.xsd#aal_CollectiveBargainingArrangementPercentageofEmployersParticipants"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_CollectiveBargainingArrangementPercentageofEmployersParticipants_40042bce-d2f6-46a8-917a-aef67df24658" xlink:type="arc" order="23"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_CollectiveBargainingArrangementPercentageOfEmployersParticipantsUnderAgreementsCurrentlyAmendable_253e4842-7303-4dc5-84a1-65020d122c2d" xlink:href="aal-20211231.xsd#aal_CollectiveBargainingArrangementPercentageOfEmployersParticipantsUnderAgreementsCurrentlyAmendable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_aal_CollectiveBargainingArrangementPercentageOfEmployersParticipantsUnderAgreementsCurrentlyAmendable_253e4842-7303-4dc5-84a1-65020d122c2d" xlink:type="arc" order="24"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermPurchaseCommitmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentLineItems_d47ff883-eb9e-4dfd-af54-6cfbf991edd7" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a9f7963e-be81-442c-943b-2378f0795cd0" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:to="loc_dei_LegalEntityAxis_a9f7963e-be81-442c-943b-2378f0795cd0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a9f7963e-be81-442c-943b-2378f0795cd0_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a9f7963e-be81-442c-943b-2378f0795cd0" xlink:to="loc_dei_EntityDomain_a9f7963e-be81-442c-943b-2378f0795cd0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3d45bdb1-bec9-4b82-a55f-4e57f5a6fe2c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a9f7963e-be81-442c-943b-2378f0795cd0" xlink:to="loc_dei_EntityDomain_3d45bdb1-bec9-4b82-a55f-4e57f5a6fe2c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_87aca2ef-cb75-4f99-9153-8815dada7377" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3d45bdb1-bec9-4b82-a55f-4e57f5a6fe2c" xlink:to="loc_aal_AmericanAirlinesIncMember_87aca2ef-cb75-4f99-9153-8815dada7377" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_afcc314f-6724-4303-a184-d74b22633751" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:to="loc_us-gaap_DebtInstrumentAxis_afcc314f-6724-4303-a184-d74b22633751" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_afcc314f-6724-4303-a184-d74b22633751_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_afcc314f-6724-4303-a184-d74b22633751" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_afcc314f-6724-4303-a184-d74b22633751_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_fe4d7cbc-9dd9-4126-93a0-d9bc01386d26" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtInstrumentNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_afcc314f-6724-4303-a184-d74b22633751" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_fe4d7cbc-9dd9-4126-93a0-d9bc01386d26" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EnhancedEquipmentTrustCertificateMember_49c0d329-5357-4bd2-bd2f-75248485254b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EnhancedEquipmentTrustCertificateMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fe4d7cbc-9dd9-4126-93a0-d9bc01386d26" xlink:to="loc_us-gaap_EnhancedEquipmentTrustCertificateMember_49c0d329-5357-4bd2-bd2f-75248485254b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SpecialFacilityRevenueBondsMember_369b3b15-d95c-40c0-a929-8d955cf9b7c4" xlink:href="aal-20211231.xsd#aal_SpecialFacilityRevenueBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fe4d7cbc-9dd9-4126-93a0-d9bc01386d26" xlink:to="loc_aal_SpecialFacilityRevenueBondsMember_369b3b15-d95c-40c0-a929-8d955cf9b7c4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_5e4d800e-06fb-4604-8ff3-5e0c74d2c247" xlink:href="aal-20211231.xsd#aal_PayrollSupportProgramPromissoryNoteOneCARESActMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fe4d7cbc-9dd9-4126-93a0-d9bc01386d26" xlink:to="loc_aal_PayrollSupportProgramPromissoryNoteOneCARESActMember_5e4d800e-06fb-4604-8ff3-5e0c74d2c247" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes5.000Due2022Member_8dd3b061-ac75-47b8-b56f-328b92bce10e" xlink:href="aal-20211231.xsd#aal_SeniorNotes5.000Due2022Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fe4d7cbc-9dd9-4126-93a0-d9bc01386d26" xlink:to="loc_aal_SeniorNotes5.000Due2022Member_8dd3b061-ac75-47b8-b56f-328b92bce10e" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNote375Matures2025Member_14fdb218-033c-4feb-83d7-5483c4cec36b" xlink:href="aal-20211231.xsd#aal_SeniorNote375Matures2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fe4d7cbc-9dd9-4126-93a0-d9bc01386d26" xlink:to="loc_aal_SeniorNote375Matures2025Member_14fdb218-033c-4feb-83d7-5483c4cec36b" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SeniorNotes6.50Due2025Member_ece30a43-4b47-4d34-8258-3ef5297aeed6" xlink:href="aal-20211231.xsd#aal_SeniorNotes6.50Due2025Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_fe4d7cbc-9dd9-4126-93a0-d9bc01386d26" xlink:to="loc_aal_SeniorNotes6.50Due2025Member_ece30a43-4b47-4d34-8258-3ef5297aeed6" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_4a60b11e-0f5e-418d-b205-11af9c3aafa9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_4a60b11e-0f5e-418d-b205-11af9c3aafa9" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4a60b11e-0f5e-418d-b205-11af9c3aafa9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4a60b11e-0f5e-418d-b205-11af9c3aafa9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4a60b11e-0f5e-418d-b205-11af9c3aafa9_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_552951ce-3800-4715-b92a-7ef0d2ea0fdd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongtermDebtTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4a60b11e-0f5e-418d-b205-11af9c3aafa9" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_552951ce-3800-4715-b92a-7ef0d2ea0fdd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_c30b8220-b76c-4ad4-8d91-c2b8c82089c0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_552951ce-3800-4715-b92a-7ef0d2ea0fdd" xlink:to="loc_us-gaap_SecuredDebtMember_c30b8220-b76c-4ad4-8d91-c2b8c82089c0" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebtMember_c6bdc602-df40-4d40-9d78-897766c1a71c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnsecuredDebtMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_552951ce-3800-4715-b92a-7ef0d2ea0fdd" xlink:to="loc_us-gaap_UnsecuredDebtMember_c6bdc602-df40-4d40-9d78-897766c1a71c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermAxis_d10bcea1-dfeb-4608-ade8-906907f48c47" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseContractualTermAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:to="loc_us-gaap_LeaseContractualTermAxis_d10bcea1-dfeb-4608-ade8-906907f48c47" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_d10bcea1-dfeb-4608-ade8-906907f48c47_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseContractualTermDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LeaseContractualTermAxis_d10bcea1-dfeb-4608-ade8-906907f48c47" xlink:to="loc_us-gaap_LeaseContractualTermDomain_d10bcea1-dfeb-4608-ade8-906907f48c47_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseContractualTermDomain_a3931299-96fe-4e98-a3bf-b4c37467f654" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseContractualTermDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LeaseContractualTermAxis_d10bcea1-dfeb-4608-ade8-906907f48c47" xlink:to="loc_us-gaap_LeaseContractualTermDomain_a3931299-96fe-4e98-a3bf-b4c37467f654" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_EetcLeveragedLeaseFinancingsMember_7931af70-b20b-483a-9f34-7c65ffbefc63" xlink:href="aal-20211231.xsd#aal_EetcLeveragedLeaseFinancingsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_a3931299-96fe-4e98-a3bf-b4c37467f654" xlink:to="loc_aal_EetcLeveragedLeaseFinancingsMember_7931af70-b20b-483a-9f34-7c65ffbefc63" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_SpecialFacilityRevenueBondsMember_a2d0f5c8-6ce1-4db0-b545-cc23926c4498" xlink:href="aal-20211231.xsd#aal_SpecialFacilityRevenueBondsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LeaseContractualTermDomain_a3931299-96fe-4e98-a3bf-b4c37467f654" xlink:to="loc_aal_SpecialFacilityRevenueBondsMember_a2d0f5c8-6ce1-4db0-b545-cc23926c4498" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_51ccd1da-19a3-490d-b9ee-a11365f0c9a7" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:to="loc_srt_ProductOrServiceAxis_51ccd1da-19a3-490d-b9ee-a11365f0c9a7" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_51ccd1da-19a3-490d-b9ee-a11365f0c9a7_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_51ccd1da-19a3-490d-b9ee-a11365f0c9a7" xlink:to="loc_srt_ProductsAndServicesDomain_51ccd1da-19a3-490d-b9ee-a11365f0c9a7_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e6e3d678-872b-480a-9cdf-2488a95864d4" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_51ccd1da-19a3-490d-b9ee-a11365f0c9a7" xlink:to="loc_srt_ProductsAndServicesDomain_e6e3d678-872b-480a-9cdf-2488a95864d4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegionalCarrierMember_a415f3c0-8121-406a-a0ff-ab0cb2a52051" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RegionalCarrierMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e6e3d678-872b-480a-9cdf-2488a95864d4" xlink:to="loc_us-gaap_RegionalCarrierMember_a415f3c0-8121-406a-a0ff-ab0cb2a52051" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_064256b6-f627-4e51-9fa3-8d35fa558fb4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_064256b6-f627-4e51-9fa3-8d35fa558fb4" xlink:type="arc" order="6"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_064256b6-f627-4e51-9fa3-8d35fa558fb4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_064256b6-f627-4e51-9fa3-8d35fa558fb4" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_064256b6-f627-4e51-9fa3-8d35fa558fb4_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7c952390-9bad-4333-8269-5065cbbc1678" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_064256b6-f627-4e51-9fa3-8d35fa558fb4" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7c952390-9bad-4333-8269-5065cbbc1678" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_e7154d0e-0100-4964-8aa6-26a0199faeff" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseholdImprovementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7c952390-9bad-4333-8269-5065cbbc1678" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_e7154d0e-0100-4964-8aa6-26a0199faeff" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_70dec6d4-f1fc-49d6-be34-aa229d1d5543" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_70dec6d4-f1fc-49d6-be34-aa229d1d5543" xlink:type="arc" order="7"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_70dec6d4-f1fc-49d6-be34-aa229d1d5543_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_70dec6d4-f1fc-49d6-be34-aa229d1d5543" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_70dec6d4-f1fc-49d6-be34-aa229d1d5543_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_89d8c17b-1b87-4a59-9748-3b039b15d01f" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_70dec6d4-f1fc-49d6-be34-aa229d1d5543" xlink:to="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_89d8c17b-1b87-4a59-9748-3b039b15d01f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LAXModernizationProjectMember_b4daf842-4255-495b-90e3-617ffe041c69" xlink:href="aal-20211231.xsd#aal_LAXModernizationProjectMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_89d8c17b-1b87-4a59-9748-3b039b15d01f" xlink:to="loc_aal_LAXModernizationProjectMember_b4daf842-4255-495b-90e3-617ffe041c69" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnderlyingAssetClassAxis_738f92e5-f00a-4290-9bae-5c9e3f4433b6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnderlyingAssetClassAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:to="loc_us-gaap_UnderlyingAssetClassAxis_738f92e5-f00a-4290-9bae-5c9e3f4433b6" xlink:type="arc" order="8"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnderlyingAssetClassDomain_738f92e5-f00a-4290-9bae-5c9e3f4433b6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnderlyingAssetClassDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnderlyingAssetClassAxis_738f92e5-f00a-4290-9bae-5c9e3f4433b6" xlink:to="loc_us-gaap_UnderlyingAssetClassDomain_738f92e5-f00a-4290-9bae-5c9e3f4433b6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnderlyingAssetClassDomain_6259266e-3c50-4f00-bcfc-07319f76c60f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_UnderlyingAssetClassDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnderlyingAssetClassAxis_738f92e5-f00a-4290-9bae-5c9e3f4433b6" xlink:to="loc_us-gaap_UnderlyingAssetClassDomain_6259266e-3c50-4f00-bcfc-07319f76c60f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_RestrictedCashMember_e3c96ddf-b2eb-4bd9-a5d5-1fb48947fd3f" xlink:href="aal-20211231.xsd#aal_RestrictedCashMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnderlyingAssetClassDomain_6259266e-3c50-4f00-bcfc-07319f76c60f" xlink:to="loc_aal_RestrictedCashMember_e3c96ddf-b2eb-4bd9-a5d5-1fb48947fd3f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_3a10d94c-1262-4aa4-aabe-1e99e6b6f383" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentTable_e02e32ec-c1db-469f-9c18-b5f60b92aa05" xlink:to="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_3a10d94c-1262-4aa4-aabe-1e99e6b6f383" xlink:type="arc" order="9"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectMember_3a10d94c-1262-4aa4-aabe-1e99e6b6f383_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProjectMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_3a10d94c-1262-4aa4-aabe-1e99e6b6f383" xlink:to="loc_us-gaap_ProjectMember_3a10d94c-1262-4aa4-aabe-1e99e6b6f383_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProjectMember_c5eee3c1-7d52-4910-9718-2b1b47f4a3f4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProjectMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationByPropertyOrProjectAxis_3a10d94c-1262-4aa4-aabe-1e99e6b6f383" xlink:to="loc_us-gaap_ProjectMember_c5eee3c1-7d52-4910-9718-2b1b47f4a3f4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_JFKAirportUpgradeMember_8b018b78-0e9a-4a3c-a89d-e7c249bb0baf" xlink:href="aal-20211231.xsd#aal_JFKAirportUpgradeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProjectMember_c5eee3c1-7d52-4910-9718-2b1b47f4a3f4" xlink:to="loc_aal_JFKAirportUpgradeMember_8b018b78-0e9a-4a3c-a89d-e7c249bb0baf" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_JFKAirportUpgradeExistingTerminalBuildingMember_fa823301-5aff-45bd-a5f1-7cedac76a063" xlink:href="aal-20211231.xsd#aal_JFKAirportUpgradeExistingTerminalBuildingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_JFKAirportUpgradeMember_8b018b78-0e9a-4a3c-a89d-e7c249bb0baf" xlink:to="loc_aal_JFKAirportUpgradeExistingTerminalBuildingMember_fa823301-5aff-45bd-a5f1-7cedac76a063" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_JFKAirportUpgradeNewTerminalBuildingMember_dbc0af29-83c7-4669-8929-a714f65ac89b" xlink:href="aal-20211231.xsd#aal_JFKAirportUpgradeNewTerminalBuildingMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_aal_JFKAirportUpgradeMember_8b018b78-0e9a-4a3c-a89d-e7c249bb0baf" xlink:to="loc_aal_JFKAirportUpgradeNewTerminalBuildingMember_dbc0af29-83c7-4669-8929-a714f65ac89b" xlink:type="arc" order="2"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SupplementalCashFlowInformation" xlink:type="simple" xlink:href="aal-20211231.xsd#SupplementalCashFlowInformation"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SupplementalCashFlowInformation" xlink:type="extended" id="ia8967d8b2a774a0c9f874f95a6b5641c_SupplementalCashFlowInformation">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_23f8b07a-3fed-44c2-871f-d34a4c7581a6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherSignificantNoncashTransactionsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowSupplementalDisclosuresTextBlock_26f89095-265b-4a38-aa3a-8ce6f024dcf8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashFlowSupplementalDisclosuresTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_23f8b07a-3fed-44c2-871f-d34a4c7581a6" xlink:to="loc_us-gaap_CashFlowSupplementalDisclosuresTextBlock_26f89095-265b-4a38-aa3a-8ce6f024dcf8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionsTable_a21cac80-c2eb-4c70-aa17-4075cb974efe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherSignificantNoncashTransactionsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_23f8b07a-3fed-44c2-871f-d34a4c7581a6" xlink:to="loc_us-gaap_OtherSignificantNoncashTransactionsTable_a21cac80-c2eb-4c70-aa17-4075cb974efe" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_39745d32-fb91-48f4-9098-3d9bcccf6a8d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsTable_a21cac80-c2eb-4c70-aa17-4075cb974efe" xlink:to="loc_dei_LegalEntityAxis_39745d32-fb91-48f4-9098-3d9bcccf6a8d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_39745d32-fb91-48f4-9098-3d9bcccf6a8d_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_39745d32-fb91-48f4-9098-3d9bcccf6a8d" xlink:to="loc_dei_EntityDomain_39745d32-fb91-48f4-9098-3d9bcccf6a8d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_99caaa13-2bb3-4f8c-9a9f-c8b797f4360c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_39745d32-fb91-48f4-9098-3d9bcccf6a8d" xlink:to="loc_dei_EntityDomain_99caaa13-2bb3-4f8c-9a9f-c8b797f4360c" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_abdd4a9b-7df9-4898-aa9b-800cfee2343c" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_99caaa13-2bb3-4f8c-9a9f-c8b797f4360c" xlink:to="loc_aal_AmericanAirlinesIncMember_abdd4a9b-7df9-4898-aa9b-800cfee2343c" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SupplementalCashFlowInformationTables" xlink:type="simple" xlink:href="aal-20211231.xsd#SupplementalCashFlowInformationTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SupplementalCashFlowInformationTables" xlink:type="extended" id="ib33be068584a42e08db6dcb020823bb6_SupplementalCashFlowInformationTables">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_277339b1-a535-4920-8329-e4fe51df9bbc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherSignificantNoncashTransactionsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_ae293416-847b-4420-9192-3f8a13330cdd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_277339b1-a535-4920-8329-e4fe51df9bbc" xlink:to="loc_us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock_ae293416-847b-4420-9192-3f8a13330cdd" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionsTable_022cbc2e-7134-4eb1-91fd-aa93794901ad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherSignificantNoncashTransactionsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_277339b1-a535-4920-8329-e4fe51df9bbc" xlink:to="loc_us-gaap_OtherSignificantNoncashTransactionsTable_022cbc2e-7134-4eb1-91fd-aa93794901ad" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_9c2252c5-be8a-4656-b840-784636fa3714" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsTable_022cbc2e-7134-4eb1-91fd-aa93794901ad" xlink:to="loc_dei_LegalEntityAxis_9c2252c5-be8a-4656-b840-784636fa3714" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9c2252c5-be8a-4656-b840-784636fa3714_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_9c2252c5-be8a-4656-b840-784636fa3714" xlink:to="loc_dei_EntityDomain_9c2252c5-be8a-4656-b840-784636fa3714_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_d15f3a54-1cb3-4cf7-8178-369e25536536" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_9c2252c5-be8a-4656-b840-784636fa3714" xlink:to="loc_dei_EntityDomain_d15f3a54-1cb3-4cf7-8178-369e25536536" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_c55d4986-1c13-490e-bc73-8a724ba3d09e" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_d15f3a54-1cb3-4cf7-8178-369e25536536" xlink:to="loc_aal_AmericanAirlinesIncMember_c55d4986-1c13-490e-bc73-8a724ba3d09e" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SupplementalCashFlowInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#SupplementalCashFlowInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SupplementalCashFlowInformationDetails" xlink:type="extended" id="i781d88dadebc47328e4f1c65404a305d_SupplementalCashFlowInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_bda55719-b8a1-4299-b231-3acc1f6ee967" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherSignificantNoncashTransactionsLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_3be7c100-f305-4466-b4e5-6ba5d8921f52" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_bda55719-b8a1-4299-b231-3acc1f6ee967" xlink:to="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_3be7c100-f305-4466-b4e5-6ba5d8921f52" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_LiabilitiesIncurredToAcquireEquitySecurities_7517874b-55e9-48cf-bd59-a288944c3bd0" xlink:href="aal-20211231.xsd#aal_LiabilitiesIncurredToAcquireEquitySecurities"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_3be7c100-f305-4466-b4e5-6ba5d8921f52" xlink:to="loc_aal_LiabilitiesIncurredToAcquireEquitySecurities_7517874b-55e9-48cf-bd59-a288944c3bd0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_OtherSignificantNoncashTransactionBankruptcySettlementObligation_6abcce5f-5b67-4a30-b992-aee4f4c1b104" xlink:href="aal-20211231.xsd#aal_OtherSignificantNoncashTransactionBankruptcySettlementObligation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_3be7c100-f305-4466-b4e5-6ba5d8921f52" xlink:to="loc_aal_OtherSignificantNoncashTransactionBankruptcySettlementObligation_6abcce5f-5b67-4a30-b992-aee4f4c1b104" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction_23b0f8f9-4a8e-4003-9239-5df264185934" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_3be7c100-f305-4466-b4e5-6ba5d8921f52" xlink:to="loc_us-gaap_DebtIssuanceCostsIncurredDuringNoncashOrPartialNoncashTransaction_23b0f8f9-4a8e-4003-9239-5df264185934" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_2294d90e-421d-423b-95a6-0fbe9cbad234" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_bda55719-b8a1-4299-b231-3acc1f6ee967" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_2294d90e-421d-423b-95a6-0fbe9cbad234" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestPaidNet_3eec730d-9388-429c-b9d1-1165b3102162" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestPaidNet"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_2294d90e-421d-423b-95a6-0fbe9cbad234" xlink:to="loc_us-gaap_InterestPaidNet_3eec730d-9388-429c-b9d1-1165b3102162" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesPaid_b5a63984-2589-4d6d-b378-238e654f8084" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxesPaid"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_2294d90e-421d-423b-95a6-0fbe9cbad234" xlink:to="loc_us-gaap_IncomeTaxesPaid_b5a63984-2589-4d6d-b378-238e654f8084" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherSignificantNoncashTransactionsTable_7dfa811d-fa3c-4f40-8964-c02602812aa6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherSignificantNoncashTransactionsTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsLineItems_bda55719-b8a1-4299-b231-3acc1f6ee967" xlink:to="loc_us-gaap_OtherSignificantNoncashTransactionsTable_7dfa811d-fa3c-4f40-8964-c02602812aa6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_a55c148f-143b-4ddf-b883-c6516d0586c0" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherSignificantNoncashTransactionsTable_7dfa811d-fa3c-4f40-8964-c02602812aa6" xlink:to="loc_dei_LegalEntityAxis_a55c148f-143b-4ddf-b883-c6516d0586c0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a55c148f-143b-4ddf-b883-c6516d0586c0_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_a55c148f-143b-4ddf-b883-c6516d0586c0" xlink:to="loc_dei_EntityDomain_a55c148f-143b-4ddf-b883-c6516d0586c0_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_33f58d1d-d4c8-4811-ad1f-cd7b6e7e3161" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_a55c148f-143b-4ddf-b883-c6516d0586c0" xlink:to="loc_dei_EntityDomain_33f58d1d-d4c8-4811-ad1f-cd7b6e7e3161" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_402256ed-9c8d-4ea7-bc6d-8b6c94999267" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_33f58d1d-d4c8-4811-ad1f-cd7b6e7e3161" xlink:to="loc_aal_AmericanAirlinesIncMember_402256ed-9c8d-4ea7-bc6d-8b6c94999267" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/OperatingSegmentsandRelatedDisclosures" xlink:type="simple" xlink:href="aal-20211231.xsd#OperatingSegmentsandRelatedDisclosures"/>
<link:definitionLink xlink:role="http://www.aa.com/role/OperatingSegmentsandRelatedDisclosures" xlink:type="extended" id="i249b240d80db4bba9750986e650d76ed_OperatingSegmentsandRelatedDisclosures">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_bd5b4311-7a71-46ed-b976-51c255f4dae8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_1d370072-86b1-4c9d-b545-214e5ff5744e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_bd5b4311-7a71-46ed-b976-51c255f4dae8" xlink:to="loc_us-gaap_SegmentReportingDisclosureTextBlock_1d370072-86b1-4c9d-b545-214e5ff5744e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2e0dc41b-2beb-4e42-bd62-530dbb3550c0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_bd5b4311-7a71-46ed-b976-51c255f4dae8" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2e0dc41b-2beb-4e42-bd62-530dbb3550c0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_cd4c3ac6-88ab-4dc9-8b8b-a742762b4dac" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2e0dc41b-2beb-4e42-bd62-530dbb3550c0" xlink:to="loc_dei_LegalEntityAxis_cd4c3ac6-88ab-4dc9-8b8b-a742762b4dac" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_cd4c3ac6-88ab-4dc9-8b8b-a742762b4dac_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_cd4c3ac6-88ab-4dc9-8b8b-a742762b4dac" xlink:to="loc_dei_EntityDomain_cd4c3ac6-88ab-4dc9-8b8b-a742762b4dac_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_3fd27712-f162-4776-bb83-7f56561377c3" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_cd4c3ac6-88ab-4dc9-8b8b-a742762b4dac" xlink:to="loc_dei_EntityDomain_3fd27712-f162-4776-bb83-7f56561377c3" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_f7e1de9a-ce6a-4ded-b71d-2bf0c72f2ed8" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_3fd27712-f162-4776-bb83-7f56561377c3" xlink:to="loc_aal_AmericanAirlinesIncMember_f7e1de9a-ce6a-4ded-b71d-2bf0c72f2ed8" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/OperatingSegmentsandRelatedDisclosuresDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#OperatingSegmentsandRelatedDisclosuresDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/OperatingSegmentsandRelatedDisclosuresDetails" xlink:type="extended" id="ied07fd7a2c8b44e5a5ee0421ef6c6de0_OperatingSegmentsandRelatedDisclosuresDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_c1d907f9-52aa-4910-942a-62d2700e5022" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SegmentReportingInformationLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfOperatingSegments_c321dbd2-bf32-4e27-8ac8-e80e171c0173" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NumberOfOperatingSegments"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_c1d907f9-52aa-4910-942a-62d2700e5022" xlink:to="loc_us-gaap_NumberOfOperatingSegments_c321dbd2-bf32-4e27-8ac8-e80e171c0173" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c81155c9-309f-4de5-afeb-6f8493beaa73" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_c1d907f9-52aa-4910-942a-62d2700e5022" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c81155c9-309f-4de5-afeb-6f8493beaa73" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_142f88d5-5980-4137-9196-c7c1c96b6c33" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_c81155c9-309f-4de5-afeb-6f8493beaa73" xlink:to="loc_dei_LegalEntityAxis_142f88d5-5980-4137-9196-c7c1c96b6c33" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_142f88d5-5980-4137-9196-c7c1c96b6c33_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_142f88d5-5980-4137-9196-c7c1c96b6c33" xlink:to="loc_dei_EntityDomain_142f88d5-5980-4137-9196-c7c1c96b6c33_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_4f3f0c0a-39e6-448e-9ccf-491a720b4fd0" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_142f88d5-5980-4137-9196-c7c1c96b6c33" xlink:to="loc_dei_EntityDomain_4f3f0c0a-39e6-448e-9ccf-491a720b4fd0" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_a181600e-6a6e-43de-876c-1349c24829f7" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_4f3f0c0a-39e6-448e-9ccf-491a720b4fd0" xlink:to="loc_aal_AmericanAirlinesIncMember_a181600e-6a6e-43de-876c-1349c24829f7" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SharebasedCompensation" xlink:type="simple" xlink:href="aal-20211231.xsd#SharebasedCompensation"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SharebasedCompensation" xlink:type="extended" id="if1cfd57dff184105a0d4b97775023e3e_SharebasedCompensation">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e183309f-5cfc-4deb-bdde-1bd3c203f0e3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_8a682954-f5d3-47c6-bf35-1ca3a0bd00e3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e183309f-5cfc-4deb-bdde-1bd3c203f0e3" xlink:to="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_8a682954-f5d3-47c6-bf35-1ca3a0bd00e3" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_c4f4f23f-c8fc-4dca-8c06-136a358a7850" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_e183309f-5cfc-4deb-bdde-1bd3c203f0e3" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_c4f4f23f-c8fc-4dca-8c06-136a358a7850" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_33467640-da1b-4548-b0aa-cc16843fe415" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_c4f4f23f-c8fc-4dca-8c06-136a358a7850" xlink:to="loc_dei_LegalEntityAxis_33467640-da1b-4548-b0aa-cc16843fe415" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_33467640-da1b-4548-b0aa-cc16843fe415_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_33467640-da1b-4548-b0aa-cc16843fe415" xlink:to="loc_dei_EntityDomain_33467640-da1b-4548-b0aa-cc16843fe415_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5e33a1dc-4180-4f38-912c-c861ba78ef2b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_33467640-da1b-4548-b0aa-cc16843fe415" xlink:to="loc_dei_EntityDomain_5e33a1dc-4180-4f38-912c-c861ba78ef2b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_738ecf53-7901-473b-ab0e-c1063546794e" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5e33a1dc-4180-4f38-912c-c861ba78ef2b" xlink:to="loc_aal_AmericanAirlinesIncMember_738ecf53-7901-473b-ab0e-c1063546794e" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SharebasedCompensationTables" xlink:type="simple" xlink:href="aal-20211231.xsd#SharebasedCompensationTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SharebasedCompensationTables" xlink:type="extended" id="i94e45ba39fba4a30901dde95cbd74d49_SharebasedCompensationTables">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_32194377-13e0-4ce3-9252-2fba854aeabc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock_cdc7fb15-f07f-4213-b53d-33ce9e2fbf4d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_32194377-13e0-4ce3-9252-2fba854aeabc" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock_cdc7fb15-f07f-4213-b53d-33ce9e2fbf4d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8b0c4130-b5a2-427f-845c-8f44e4abd8e5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_32194377-13e0-4ce3-9252-2fba854aeabc" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8b0c4130-b5a2-427f-845c-8f44e4abd8e5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_05b95511-0eb5-437e-aeac-2fbfdedeadee" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8b0c4130-b5a2-427f-845c-8f44e4abd8e5" xlink:to="loc_dei_LegalEntityAxis_05b95511-0eb5-437e-aeac-2fbfdedeadee" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_05b95511-0eb5-437e-aeac-2fbfdedeadee_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_05b95511-0eb5-437e-aeac-2fbfdedeadee" xlink:to="loc_dei_EntityDomain_05b95511-0eb5-437e-aeac-2fbfdedeadee_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ffccba3f-c479-4bbf-8aff-354864c063bb" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_05b95511-0eb5-437e-aeac-2fbfdedeadee" xlink:to="loc_dei_EntityDomain_ffccba3f-c479-4bbf-8aff-354864c063bb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_c218441b-5c7d-4cce-820c-bce0b3a3fe3a" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_ffccba3f-c479-4bbf-8aff-354864c063bb" xlink:to="loc_aal_AmericanAirlinesIncMember_c218441b-5c7d-4cce-820c-bce0b3a3fe3a" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ShareBasedCompensationAdditionalInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#ShareBasedCompensationAdditionalInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ShareBasedCompensationAdditionalInformationDetails" xlink:type="extended" id="ia648648d36654c05822a2cc44c217aab_ShareBasedCompensationAdditionalInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d38595ab-ac32-4190-889e-1d902d9dc40d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_ac68c726-1d57-4a43-8e1a-f349c9e18e8f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d38595ab-ac32-4190-889e-1d902d9dc40d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_ac68c726-1d57-4a43-8e1a-f349c9e18e8f" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_c1ba3dcb-a02c-404b-8130-24ae191da58b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d38595ab-ac32-4190-889e-1d902d9dc40d" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_c1ba3dcb-a02c-404b-8130-24ae191da58b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_4befc8dd-de57-4083-99f3-245a50ad3f85" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d38595ab-ac32-4190-889e-1d902d9dc40d" xlink:to="loc_us-gaap_SharesPaidForTaxWithholdingForShareBasedCompensation_4befc8dd-de57-4083-99f3-245a50ad3f85" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_6d99856d-8563-4788-9cd4-7d59aa236502" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d38595ab-ac32-4190-889e-1d902d9dc40d" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_6d99856d-8563-4788-9cd4-7d59aa236502" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7a1fc2c2-d92c-4210-b088-07c9b7a9284d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d38595ab-ac32-4190-889e-1d902d9dc40d" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7a1fc2c2-d92c-4210-b088-07c9b7a9284d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_20c571dc-785f-4c85-94a0-2ad99ee83be1" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7a1fc2c2-d92c-4210-b088-07c9b7a9284d" xlink:to="loc_dei_LegalEntityAxis_20c571dc-785f-4c85-94a0-2ad99ee83be1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_20c571dc-785f-4c85-94a0-2ad99ee83be1_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_20c571dc-785f-4c85-94a0-2ad99ee83be1" xlink:to="loc_dei_EntityDomain_20c571dc-785f-4c85-94a0-2ad99ee83be1_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c63248c2-38b6-4e95-bbc7-63cdda5cb6e4" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_20c571dc-785f-4c85-94a0-2ad99ee83be1" xlink:to="loc_dei_EntityDomain_c63248c2-38b6-4e95-bbc7-63cdda5cb6e4" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_e151fbfd-fce9-4dc7-929c-b756f938aa9a" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_c63248c2-38b6-4e95-bbc7-63cdda5cb6e4" xlink:to="loc_aal_AmericanAirlinesIncMember_e151fbfd-fce9-4dc7-929c-b756f938aa9a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_06a7a3af-bda1-4802-8344-56e004bfc073" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7a1fc2c2-d92c-4210-b088-07c9b7a9284d" xlink:to="loc_us-gaap_PlanNameAxis_06a7a3af-bda1-4802-8344-56e004bfc073" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_06a7a3af-bda1-4802-8344-56e004bfc073_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_06a7a3af-bda1-4802-8344-56e004bfc073" xlink:to="loc_us-gaap_PlanNameDomain_06a7a3af-bda1-4802-8344-56e004bfc073_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_95b99d1b-764c-4e22-8527-e305b021a93f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_06a7a3af-bda1-4802-8344-56e004bfc073" xlink:to="loc_us-gaap_PlanNameDomain_95b99d1b-764c-4e22-8527-e305b021a93f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AagIncentiveAwardPlan2013Member_5410ae4a-d4f9-490a-99c8-c4ea4b9a63fe" xlink:href="aal-20211231.xsd#aal_AagIncentiveAwardPlan2013Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_95b99d1b-764c-4e22-8527-e305b021a93f" xlink:to="loc_aal_AagIncentiveAwardPlan2013Member_5410ae4a-d4f9-490a-99c8-c4ea4b9a63fe" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ShareBasedCompensationRestrictedStockUnitAwardsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#ShareBasedCompensationRestrictedStockUnitAwardsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ShareBasedCompensationRestrictedStockUnitAwardsDetails" xlink:type="extended" id="i80121b1c86614364abadcc63cbe990c9_ShareBasedCompensationRestrictedStockUnitAwardsDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9143634f-8d4a-488a-ab2b-7854d0008697" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_a186e087-e6b2-4f0e-bcbf-7437ef0676c7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9143634f-8d4a-488a-ab2b-7854d0008697" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_a186e087-e6b2-4f0e-bcbf-7437ef0676c7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e9688a80-3a61-420a-8152-f31363c09232" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9143634f-8d4a-488a-ab2b-7854d0008697" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e9688a80-3a61-420a-8152-f31363c09232" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_b1dae98b-d84f-48b7-a782-f95196bcd7bd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e9688a80-3a61-420a-8152-f31363c09232" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_b1dae98b-d84f-48b7-a782-f95196bcd7bd" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_044ae01e-ca56-4d57-b2ab-0ceb7bf1bd07" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e9688a80-3a61-420a-8152-f31363c09232" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_044ae01e-ca56-4d57-b2ab-0ceb7bf1bd07" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_39fdf1ab-57b0-43b4-86ef-fac4f2c01650" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e9688a80-3a61-420a-8152-f31363c09232" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_39fdf1ab-57b0-43b4-86ef-fac4f2c01650" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_1e60d8de-c5ab-4314-8954-05a3ef2cdfb0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e9688a80-3a61-420a-8152-f31363c09232" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_1e60d8de-c5ab-4314-8954-05a3ef2cdfb0" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_bd6eb249-fcff-4028-9762-413710b20ac9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ab73684f-e852-47c8-b6c7-c695e9bc2599" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9143634f-8d4a-488a-ab2b-7854d0008697" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ab73684f-e852-47c8-b6c7-c695e9bc2599" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_ae794096-4f44-458a-b7df-0aeb8fc63247" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ab73684f-e852-47c8-b6c7-c695e9bc2599" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_ae794096-4f44-458a-b7df-0aeb8fc63247" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0c87b1d0-50b5-4fb2-ab8b-d86f4e20d8b2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ab73684f-e852-47c8-b6c7-c695e9bc2599" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0c87b1d0-50b5-4fb2-ab8b-d86f4e20d8b2" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_87fd1f36-6361-4877-9491-c2b8c8614397" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ab73684f-e852-47c8-b6c7-c695e9bc2599" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_87fd1f36-6361-4877-9491-c2b8c8614397" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_75a9c2ed-0738-4ecd-a891-5e87154a2f6a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_ab73684f-e852-47c8-b6c7-c695e9bc2599" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_75a9c2ed-0738-4ecd-a891-5e87154a2f6a" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_34056d4f-63c6-44cc-8ef5-07511e28a754" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_feeb9935-30b7-4ded-855f-293e23409686" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9143634f-8d4a-488a-ab2b-7854d0008697" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_feeb9935-30b7-4ded-855f-293e23409686" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_99ddd98f-983c-464c-8481-3bd1884ec8eb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9143634f-8d4a-488a-ab2b-7854d0008697" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_99ddd98f-983c-464c-8481-3bd1884ec8eb" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_86e06461-5e8c-4b77-8d95-6e7675518db5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9143634f-8d4a-488a-ab2b-7854d0008697" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_86e06461-5e8c-4b77-8d95-6e7675518db5" xlink:type="arc" order="5"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_61122b9e-3c71-49ff-84a1-a71ceec725b8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_9143634f-8d4a-488a-ab2b-7854d0008697" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_61122b9e-3c71-49ff-84a1-a71ceec725b8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_eac5496f-a08b-47ca-93ec-6cba541336be" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_61122b9e-3c71-49ff-84a1-a71ceec725b8" xlink:to="loc_dei_LegalEntityAxis_eac5496f-a08b-47ca-93ec-6cba541336be" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_eac5496f-a08b-47ca-93ec-6cba541336be_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_eac5496f-a08b-47ca-93ec-6cba541336be" xlink:to="loc_dei_EntityDomain_eac5496f-a08b-47ca-93ec-6cba541336be_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_03f205ec-68f6-4421-abb9-935199b2ceda" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_eac5496f-a08b-47ca-93ec-6cba541336be" xlink:to="loc_dei_EntityDomain_03f205ec-68f6-4421-abb9-935199b2ceda" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_100a04b9-0460-4fea-913f-1ecf83010d19" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_03f205ec-68f6-4421-abb9-935199b2ceda" xlink:to="loc_aal_AmericanAirlinesIncMember_100a04b9-0460-4fea-913f-1ecf83010d19" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_52a2827f-845b-4f6c-8e34-1afb8e2c0a6b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AwardTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_61122b9e-3c71-49ff-84a1-a71ceec725b8" xlink:to="loc_us-gaap_AwardTypeAxis_52a2827f-845b-4f6c-8e34-1afb8e2c0a6b" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_52a2827f-845b-4f6c-8e34-1afb8e2c0a6b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_52a2827f-845b-4f6c-8e34-1afb8e2c0a6b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_52a2827f-845b-4f6c-8e34-1afb8e2c0a6b_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4135b837-650a-4170-8056-c07564effcb5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_52a2827f-845b-4f6c-8e34-1afb8e2c0a6b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4135b837-650a-4170-8056-c07564effcb5" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_964fd0c2-45fa-4b07-8c0e-07bf1555f7be" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_4135b837-650a-4170-8056-c07564effcb5" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_964fd0c2-45fa-4b07-8c0e-07bf1555f7be" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ValuationandQualifyingAccounts" xlink:type="simple" xlink:href="aal-20211231.xsd#ValuationandQualifyingAccounts"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ValuationandQualifyingAccounts" xlink:type="extended" id="ifaea93ba300e436e8c8ca3e32be80678_ValuationandQualifyingAccounts">
<link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_b6a00a39-09ea-48df-9ff4-b931406ad938" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_98af2c4b-e44a-4306-9532-29e14bfc037e" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_b6a00a39-09ea-48df-9ff4-b931406ad938" xlink:to="loc_srt_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_98af2c4b-e44a-4306-9532-29e14bfc037e" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_89d9e0ae-c79a-44b6-8ffe-7fb1ec51e1ca" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_b6a00a39-09ea-48df-9ff4-b931406ad938" xlink:to="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_89d9e0ae-c79a-44b6-8ffe-7fb1ec51e1ca" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_21429ecb-5bbf-4d53-94d8-879c7132b711" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_89d9e0ae-c79a-44b6-8ffe-7fb1ec51e1ca" xlink:to="loc_dei_LegalEntityAxis_21429ecb-5bbf-4d53-94d8-879c7132b711" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_21429ecb-5bbf-4d53-94d8-879c7132b711_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_21429ecb-5bbf-4d53-94d8-879c7132b711" xlink:to="loc_dei_EntityDomain_21429ecb-5bbf-4d53-94d8-879c7132b711_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9ac680d5-741e-4a19-837e-7cf66e2a0596" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_21429ecb-5bbf-4d53-94d8-879c7132b711" xlink:to="loc_dei_EntityDomain_9ac680d5-741e-4a19-837e-7cf66e2a0596" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_9fe2d351-9651-482d-a4bf-57c8481c875f" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9ac680d5-741e-4a19-837e-7cf66e2a0596" xlink:to="loc_aal_AmericanAirlinesIncMember_9fe2d351-9651-482d-a4bf-57c8481c875f" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ValuationandQualifyingAccountsTables" xlink:type="simple" xlink:href="aal-20211231.xsd#ValuationandQualifyingAccountsTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ValuationandQualifyingAccountsTables" xlink:type="extended" id="ib9e3e1bf197f4d1b946598a0aa05d31e_ValuationandQualifyingAccountsTables">
<link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_3bb47b47-5286-4f57-b27e-b03264be3939" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_ScheduleOfValuationAndQualifyingAccountsTableTextBlock_000c5a50-b7c1-4b35-9c8d-9667c27d607b" xlink:href="aal-20211231.xsd#aal_ScheduleOfValuationAndQualifyingAccountsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_3bb47b47-5286-4f57-b27e-b03264be3939" xlink:to="loc_aal_ScheduleOfValuationAndQualifyingAccountsTableTextBlock_000c5a50-b7c1-4b35-9c8d-9667c27d607b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_33458249-19ba-4de2-8d37-86488a41e184" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_3bb47b47-5286-4f57-b27e-b03264be3939" xlink:to="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_33458249-19ba-4de2-8d37-86488a41e184" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_c8d5c5b2-b959-44cc-aba4-db52a5756a36" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_33458249-19ba-4de2-8d37-86488a41e184" xlink:to="loc_dei_LegalEntityAxis_c8d5c5b2-b959-44cc-aba4-db52a5756a36" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_c8d5c5b2-b959-44cc-aba4-db52a5756a36_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_c8d5c5b2-b959-44cc-aba4-db52a5756a36" xlink:to="loc_dei_EntityDomain_c8d5c5b2-b959-44cc-aba4-db52a5756a36_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_9c8b9001-3e61-463c-8e6b-ca329b3b71bc" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_c8d5c5b2-b959-44cc-aba4-db52a5756a36" xlink:to="loc_dei_EntityDomain_9c8b9001-3e61-463c-8e6b-ca329b3b71bc" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_4fde5bdb-0739-4ef6-a093-96abaca4fd16" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_9c8b9001-3e61-463c-8e6b-ca329b3b71bc" xlink:to="loc_aal_AmericanAirlinesIncMember_4fde5bdb-0739-4ef6-a093-96abaca4fd16" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/ValuationandQualifyingAccountsDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#ValuationandQualifyingAccountsDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/ValuationandQualifyingAccountsDetails" xlink:type="extended" id="i091d55beac9d4f479226549c5eae4266_ValuationandQualifyingAccountsDetails">
<link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_5fa835b3-2984-448f-8db4-cf059745f960" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_907267c4-5141-4460-aad5-7b0e5471b736" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_5fa835b3-2984-448f-8db4-cf059745f960" xlink:to="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_907267c4-5141-4460-aad5-7b0e5471b736" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_7d3159eb-7778-49d5-858c-b05ac14526c6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_907267c4-5141-4460-aad5-7b0e5471b736" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_7d3159eb-7778-49d5-858c-b05ac14526c6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_763c69a9-bf99-4540-905a-2f0976b8adf7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_907267c4-5141-4460-aad5-7b0e5471b736" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_763c69a9-bf99-4540-905a-2f0976b8adf7" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDeductions_b9090ba9-bf41-4df1-8a4b-ff2baa8e0c3a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDeductions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_907267c4-5141-4460-aad5-7b0e5471b736" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDeductions_b9090ba9-bf41-4df1-8a4b-ff2baa8e0c3a" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_de5c5212-297e-428c-a9a7-83028ff239bb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_220abf69-e93b-49ff-820a-a4b960294ccc" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureLineItems_5fa835b3-2984-448f-8db4-cf059745f960" xlink:to="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_220abf69-e93b-49ff-820a-a4b960294ccc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_823bdd90-7915-4708-bb8f-b57f69b66f75" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_220abf69-e93b-49ff-820a-a4b960294ccc" xlink:to="loc_dei_LegalEntityAxis_823bdd90-7915-4708-bb8f-b57f69b66f75" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_823bdd90-7915-4708-bb8f-b57f69b66f75_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_823bdd90-7915-4708-bb8f-b57f69b66f75" xlink:to="loc_dei_EntityDomain_823bdd90-7915-4708-bb8f-b57f69b66f75_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_19965980-35de-4e24-84b3-3dee76f46ba1" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_823bdd90-7915-4708-bb8f-b57f69b66f75" xlink:to="loc_dei_EntityDomain_19965980-35de-4e24-84b3-3dee76f46ba1" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_4ce9691d-eb97-4d71-88d0-a342d22f12ca" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_19965980-35de-4e24-84b3-3dee76f46ba1" xlink:to="loc_aal_AmericanAirlinesIncMember_4ce9691d-eb97-4d71-88d0-a342d22f12ca" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_99268121-07aa-482b-9690-bbcd78552d4d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_srt_ValuationAndQualifyingAccountsDisclosureTable_220abf69-e93b-49ff-820a-a4b960294ccc" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_99268121-07aa-482b-9690-bbcd78552d4d" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_99268121-07aa-482b-9690-bbcd78552d4d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_99268121-07aa-482b-9690-bbcd78552d4d" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_99268121-07aa-482b-9690-bbcd78552d4d_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_91fb1de3-44df-4eb7-a3b6-78c031592448" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_99268121-07aa-482b-9690-bbcd78552d4d" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_91fb1de3-44df-4eb7-a3b6-78c031592448" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryValuationReserveMember_6928ab2b-ddb6-4985-82c1-a055ae7c3eff" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InventoryValuationReserveMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_91fb1de3-44df-4eb7-a3b6-78c031592448" xlink:to="loc_us-gaap_InventoryValuationReserveMember_6928ab2b-ddb6-4985-82c1-a055ae7c3eff" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForCreditLossMember_b093bd78-9593-4139-b86d-63e920451e49" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllowanceForCreditLossMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_91fb1de3-44df-4eb7-a3b6-78c031592448" xlink:to="loc_us-gaap_AllowanceForCreditLossMember_b093bd78-9593-4139-b86d-63e920451e49" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/TransactionswithRelatedParties" xlink:type="simple" xlink:href="aal-20211231.xsd#TransactionswithRelatedParties"/>
<link:definitionLink xlink:role="http://www.aa.com/role/TransactionswithRelatedParties" xlink:type="extended" id="i16d47a021bc144f684cb7113f93f5330_TransactionswithRelatedParties">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_e6667485-a722-4f23-95d4-f947a6327136" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_cad13398-29ce-4142-a2f4-7dd82415feb5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_e6667485-a722-4f23-95d4-f947a6327136" xlink:to="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_cad13398-29ce-4142-a2f4-7dd82415feb5" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_1b5d13e2-d429-48d8-8b1d-b977d2bd1ce6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_e6667485-a722-4f23-95d4-f947a6327136" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_1b5d13e2-d429-48d8-8b1d-b977d2bd1ce6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_29538b78-d0e9-438a-a6f5-f105fa9bfd64" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_1b5d13e2-d429-48d8-8b1d-b977d2bd1ce6" xlink:to="loc_dei_LegalEntityAxis_29538b78-d0e9-438a-a6f5-f105fa9bfd64" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_29538b78-d0e9-438a-a6f5-f105fa9bfd64_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_29538b78-d0e9-438a-a6f5-f105fa9bfd64" xlink:to="loc_dei_EntityDomain_29538b78-d0e9-438a-a6f5-f105fa9bfd64_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1291d9ad-9dfc-4af1-a6f5-812f3449d316" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_29538b78-d0e9-438a-a6f5-f105fa9bfd64" xlink:to="loc_dei_EntityDomain_1291d9ad-9dfc-4af1-a6f5-812f3449d316" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_e4ca7b7f-b0d7-4691-b79b-3e9132a752dc" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_1291d9ad-9dfc-4af1-a6f5-812f3449d316" xlink:to="loc_aal_AmericanAirlinesIncMember_e4ca7b7f-b0d7-4691-b79b-3e9132a752dc" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/TransactionswithRelatedPartiesTables" xlink:type="simple" xlink:href="aal-20211231.xsd#TransactionswithRelatedPartiesTables"/>
<link:definitionLink xlink:role="http://www.aa.com/role/TransactionswithRelatedPartiesTables" xlink:type="extended" id="icc4ef73f5ee24151aa5aea7aee6e1a2c_TransactionswithRelatedPartiesTables">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_faa5343a-da01-433d-bc84-6bdaa7fc9389" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_75482c37-7b90-4518-b965-37b6ece53787" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_faa5343a-da01-433d-bc84-6bdaa7fc9389" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_75482c37-7b90-4518-b965-37b6ece53787" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6037840d-5b33-4731-ad15-09e5b5527003" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_faa5343a-da01-433d-bc84-6bdaa7fc9389" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6037840d-5b33-4731-ad15-09e5b5527003" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_ea852288-1e7c-4661-953d-a799519e4dec" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6037840d-5b33-4731-ad15-09e5b5527003" xlink:to="loc_dei_LegalEntityAxis_ea852288-1e7c-4661-953d-a799519e4dec" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_ea852288-1e7c-4661-953d-a799519e4dec_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_ea852288-1e7c-4661-953d-a799519e4dec" xlink:to="loc_dei_EntityDomain_ea852288-1e7c-4661-953d-a799519e4dec_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_a12984f5-d3da-4787-ac52-34743c1b3264" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_ea852288-1e7c-4661-953d-a799519e4dec" xlink:to="loc_dei_EntityDomain_a12984f5-d3da-4787-ac52-34743c1b3264" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_8814b5fc-3773-4dfa-b51f-0fd128822b6b" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_a12984f5-d3da-4787-ac52-34743c1b3264" xlink:to="loc_aal_AmericanAirlinesIncMember_8814b5fc-3773-4dfa-b51f-0fd128822b6b" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/TransactionswithRelatedPartiesNetReceivablesPayablestoRelatedPartiesDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#TransactionswithRelatedPartiesNetReceivablesPayablestoRelatedPartiesDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/TransactionswithRelatedPartiesNetReceivablesPayablestoRelatedPartiesDetails" xlink:type="extended" id="ibd93a4f024554f25bf54b28b19384d27_TransactionswithRelatedPartiesNetReceivablesPayablestoRelatedPartiesDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_10e7812b-44b0-47d8-b883-52b762719517" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent_6c6fbec4-f8bf-4e97-bb6a-f88e55d52939" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_10e7812b-44b0-47d8-b883-52b762719517" xlink:to="loc_us-gaap_RelatedPartyTransactionDueFromToRelatedPartyCurrent_6c6fbec4-f8bf-4e97-bb6a-f88e55d52939" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_d4cb66e3-f753-4277-add5-13b5d5798138" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_10e7812b-44b0-47d8-b883-52b762719517" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_d4cb66e3-f753-4277-add5-13b5d5798138" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_78d8961a-3467-42be-b6ec-9dbb43c0c63f" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_d4cb66e3-f753-4277-add5-13b5d5798138" xlink:to="loc_dei_LegalEntityAxis_78d8961a-3467-42be-b6ec-9dbb43c0c63f" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_78d8961a-3467-42be-b6ec-9dbb43c0c63f_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_78d8961a-3467-42be-b6ec-9dbb43c0c63f" xlink:to="loc_dei_EntityDomain_78d8961a-3467-42be-b6ec-9dbb43c0c63f_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_1ce12f0a-5c38-4410-9575-fad0b68baa65" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_78d8961a-3467-42be-b6ec-9dbb43c0c63f" xlink:to="loc_dei_EntityDomain_1ce12f0a-5c38-4410-9575-fad0b68baa65" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_101eeb14-cc6e-472b-8fce-ef6c69300d3a" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_1ce12f0a-5c38-4410-9575-fad0b68baa65" xlink:to="loc_aal_AmericanAirlinesIncMember_101eeb14-cc6e-472b-8fce-ef6c69300d3a" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c318d7da-c565-443a-acad-40388d031a90" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_d4cb66e3-f753-4277-add5-13b5d5798138" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c318d7da-c565-443a-acad-40388d031a90" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_c318d7da-c565-443a-acad-40388d031a90_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c318d7da-c565-443a-acad-40388d031a90" xlink:to="loc_us-gaap_RelatedPartyDomain_c318d7da-c565-443a-acad-40388d031a90_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_b12dc804-5579-434c-a1e6-1ee0eedead2d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_c318d7da-c565-443a-acad-40388d031a90" xlink:to="loc_us-gaap_RelatedPartyDomain_b12dc804-5579-434c-a1e6-1ee0eedead2d" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember_8dcb161c-3c49-4c1a-b8f0-57f6257f7db8" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ParentCompanyMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_b12dc804-5579-434c-a1e6-1ee0eedead2d" xlink:to="loc_srt_ParentCompanyMember_8dcb161c-3c49-4c1a-b8f0-57f6257f7db8" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiaryOfCommonParentMember_3f36b00f-cfe7-4d1f-99ff-cdfa94f9c569" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsidiaryOfCommonParentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_b12dc804-5579-434c-a1e6-1ee0eedead2d" xlink:to="loc_us-gaap_SubsidiaryOfCommonParentMember_3f36b00f-cfe7-4d1f-99ff-cdfa94f9c569" xlink:type="arc" order="1"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/TransactionswithRelatedPartiesAdditionalInformationDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#TransactionswithRelatedPartiesAdditionalInformationDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/TransactionswithRelatedPartiesAdditionalInformationDetails" xlink:type="extended" id="i144d2285171a49928181a65712c453ce_TransactionswithRelatedPartiesAdditionalInformationDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_92614e55-783b-42bb-9bc6-e77e976f1bc1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_674997c0-b124-4253-a26f-1cceb2a635a7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_92614e55-783b-42bb-9bc6-e77e976f1bc1" xlink:to="loc_us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty_674997c0-b124-4253-a26f-1cceb2a635a7" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e263b014-2ee6-43f3-949f-924584c52705" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_92614e55-783b-42bb-9bc6-e77e976f1bc1" xlink:to="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e263b014-2ee6-43f3-949f-924584c52705" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_89d5d3c8-7e62-48c1-80d9-5839ef1ec6f6" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e263b014-2ee6-43f3-949f-924584c52705" xlink:to="loc_dei_LegalEntityAxis_89d5d3c8-7e62-48c1-80d9-5839ef1ec6f6" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_89d5d3c8-7e62-48c1-80d9-5839ef1ec6f6_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_89d5d3c8-7e62-48c1-80d9-5839ef1ec6f6" xlink:to="loc_dei_EntityDomain_89d5d3c8-7e62-48c1-80d9-5839ef1ec6f6_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_fbfdffd5-f266-449c-b122-5d22c05c926b" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_89d5d3c8-7e62-48c1-80d9-5839ef1ec6f6" xlink:to="loc_dei_EntityDomain_fbfdffd5-f266-449c-b122-5d22c05c926b" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_7325504c-139b-4bf4-b9d8-764a3ed9ea8d" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_fbfdffd5-f266-449c-b122-5d22c05c926b" xlink:to="loc_aal_AmericanAirlinesIncMember_7325504c-139b-4bf4-b9d8-764a3ed9ea8d" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_686623b4-a7a6-43df-90a0-87abfe3d8868" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductOrServiceAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e263b014-2ee6-43f3-949f-924584c52705" xlink:to="loc_srt_ProductOrServiceAxis_686623b4-a7a6-43df-90a0-87abfe3d8868" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_686623b4-a7a6-43df-90a0-87abfe3d8868_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_686623b4-a7a6-43df-90a0-87abfe3d8868" xlink:to="loc_srt_ProductsAndServicesDomain_686623b4-a7a6-43df-90a0-87abfe3d8868_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_d9b6edb8-1bcf-48ac-bdd4-e43ee0a1a560" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_ProductsAndServicesDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_686623b4-a7a6-43df-90a0-87abfe3d8868" xlink:to="loc_srt_ProductsAndServicesDomain_d9b6edb8-1bcf-48ac-bdd4-e43ee0a1a560" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RegionalCarrierMember_784701ba-0603-4c7e-b992-3e25b7d9b992" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RegionalCarrierMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_d9b6edb8-1bcf-48ac-bdd4-e43ee0a1a560" xlink:to="loc_us-gaap_RegionalCarrierMember_784701ba-0603-4c7e-b992-3e25b7d9b992" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_9a6176f5-74a1-4c1f-aa7c-a531d9fef5ce" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e263b014-2ee6-43f3-949f-924584c52705" xlink:to="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_9a6176f5-74a1-4c1f-aa7c-a531d9fef5ce" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_9a6176f5-74a1-4c1f-aa7c-a531d9fef5ce_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_9a6176f5-74a1-4c1f-aa7c-a531d9fef5ce" xlink:to="loc_us-gaap_RelatedPartyDomain_9a6176f5-74a1-4c1f-aa7c-a531d9fef5ce_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyDomain_8afe554a-a7d0-4df0-a00a-09c2a4907857" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_9a6176f5-74a1-4c1f-aa7c-a531d9fef5ce" xlink:to="loc_us-gaap_RelatedPartyDomain_8afe554a-a7d0-4df0-a00a-09c2a4907857" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsidiaryOfCommonParentMember_62495748-6a18-4602-8f41-d6509f99bb33" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsidiaryOfCommonParentMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyDomain_8afe554a-a7d0-4df0-a00a-09c2a4907857" xlink:to="loc_us-gaap_SubsidiaryOfCommonParentMember_62495748-6a18-4602-8f41-d6509f99bb33" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_f20b8c86-7dc5-4ef0-b753-59fe3c94ff13" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_e263b014-2ee6-43f3-949f-924584c52705" xlink:to="loc_us-gaap_RelatedPartyTransactionAxis_f20b8c86-7dc5-4ef0-b753-59fe3c94ff13" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_f20b8c86-7dc5-4ef0-b753-59fe3c94ff13_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_f20b8c86-7dc5-4ef0-b753-59fe3c94ff13" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_f20b8c86-7dc5-4ef0-b753-59fe3c94ff13_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_dbab2635-7382-4290-9bb7-7a12740af5c2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RelatedPartyTransactionDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_f20b8c86-7dc5-4ef0-b753-59fe3c94ff13" xlink:to="loc_us-gaap_RelatedPartyTransactionDomain_dbab2635-7382-4290-9bb7-7a12740af5c2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AirlineCapacityPurchaseArrangementsMember_37ee4dd3-8e7c-4e87-a91e-c41fd38b25e5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AirlineCapacityPurchaseArrangementsMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_dbab2635-7382-4290-9bb7-7a12740af5c2" xlink:to="loc_us-gaap_AirlineCapacityPurchaseArrangementsMember_37ee4dd3-8e7c-4e87-a91e-c41fd38b25e5" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SubsequentEvent" xlink:type="simple" xlink:href="aal-20211231.xsd#SubsequentEvent"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SubsequentEvent" xlink:type="extended" id="i75392f70e03142f584ac25158d60c0c1_SubsequentEvent">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_9d79c181-c78a-4393-bd83-c646a6abcc18" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventsTextBlock_904d32f9-1121-4464-80b6-2492596beab6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventsTextBlock"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_9d79c181-c78a-4393-bd83-c646a6abcc18" xlink:to="loc_us-gaap_SubsequentEventsTextBlock_904d32f9-1121-4464-80b6-2492596beab6" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_fd9b4418-2fbc-48f8-9fae-d6f2d66c0c85" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_9d79c181-c78a-4393-bd83-c646a6abcc18" xlink:to="loc_us-gaap_SubsequentEventTable_fd9b4418-2fbc-48f8-9fae-d6f2d66c0c85" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_e9306d36-9549-4a03-a6af-895df8afe1ef" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_fd9b4418-2fbc-48f8-9fae-d6f2d66c0c85" xlink:to="loc_dei_LegalEntityAxis_e9306d36-9549-4a03-a6af-895df8afe1ef" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_e9306d36-9549-4a03-a6af-895df8afe1ef_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_e9306d36-9549-4a03-a6af-895df8afe1ef" xlink:to="loc_dei_EntityDomain_e9306d36-9549-4a03-a6af-895df8afe1ef_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_25f39e19-a65a-4c2f-91e2-e8c248993318" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_e9306d36-9549-4a03-a6af-895df8afe1ef" xlink:to="loc_dei_EntityDomain_25f39e19-a65a-4c2f-91e2-e8c248993318" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_42566d8f-596f-42fb-ac46-2ec5e15bdf5e" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_25f39e19-a65a-4c2f-91e2-e8c248993318" xlink:to="loc_aal_AmericanAirlinesIncMember_42566d8f-596f-42fb-ac46-2ec5e15bdf5e" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://www.aa.com/role/SubsequentEventDetails" xlink:type="simple" xlink:href="aal-20211231.xsd#SubsequentEventDetails"/>
<link:definitionLink xlink:role="http://www.aa.com/role/SubsequentEventDetails" xlink:type="extended" id="i6e39d39210664e689dc0e3d2dc93dfe0_SubsequentEventDetails">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_ba1dd98d-ce29-4e08-91ed-f88cffbf4599" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventLineItems"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThroughTheConversionOfExistingPurchaseOption_8fb85548-2f9c-4af3-8642-18137705c372" xlink:href="aal-20211231.xsd#aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThroughTheConversionOfExistingPurchaseOption"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_ba1dd98d-ce29-4e08-91ed-f88cffbf4599" xlink:to="loc_aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThroughTheConversionOfExistingPurchaseOption_8fb85548-2f9c-4af3-8642-18137705c372" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThoughExercisingPurchaseOptions_875d7c62-c9fa-4fa2-891f-37c2e6b8f6fb" xlink:href="aal-20211231.xsd#aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThoughExercisingPurchaseOptions"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_ba1dd98d-ce29-4e08-91ed-f88cffbf4599" xlink:to="loc_aal_PurchaseCommitmentNumberOfAircraftsToBePurchasedThoughExercisingPurchaseOptions_875d7c62-c9fa-4fa2-891f-37c2e6b8f6fb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_PurchaseCommitmentAdditionalNumberOfAircraftsToBePurchased_5572d237-ec9f-495a-a6be-4274999bbe6a" xlink:href="aal-20211231.xsd#aal_PurchaseCommitmentAdditionalNumberOfAircraftsToBePurchased"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_ba1dd98d-ce29-4e08-91ed-f88cffbf4599" xlink:to="loc_aal_PurchaseCommitmentAdditionalNumberOfAircraftsToBePurchased_5572d237-ec9f-495a-a6be-4274999bbe6a" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodTwo_3ea7de0a-cbc7-4524-840f-4acd183854ca" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodTwo"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_ba1dd98d-ce29-4e08-91ed-f88cffbf4599" xlink:to="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodTwo_3ea7de0a-cbc7-4524-840f-4acd183854ca" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodThree_d41e6404-e7f9-46e7-ba7a-6b522607a579" xlink:href="aal-20211231.xsd#aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodThree"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_ba1dd98d-ce29-4e08-91ed-f88cffbf4599" xlink:to="loc_aal_NumberOfAircraftsDeferrableScheduledToBeDeliveredPeriodThree_d41e6404-e7f9-46e7-ba7a-6b522607a579" xlink:type="arc" order="4"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_d2f78fe9-68c3-442c-a907-b7ff07869a6c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTable"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_ba1dd98d-ce29-4e08-91ed-f88cffbf4599" xlink:to="loc_us-gaap_SubsequentEventTable_d2f78fe9-68c3-442c-a907-b7ff07869a6c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_AircraftTypeAxis_6736d084-aac4-487f-add3-d2a9e51fd8e2" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_AircraftTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_d2f78fe9-68c3-442c-a907-b7ff07869a6c" xlink:to="loc_srt_AircraftTypeAxis_6736d084-aac4-487f-add3-d2a9e51fd8e2" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_AircraftTypeMember_6736d084-aac4-487f-add3-d2a9e51fd8e2_default" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_AircraftTypeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_AircraftTypeAxis_6736d084-aac4-487f-add3-d2a9e51fd8e2" xlink:to="loc_srt_AircraftTypeMember_6736d084-aac4-487f-add3-d2a9e51fd8e2_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_srt_AircraftTypeMember_677b4ac1-ac02-4432-9ffb-c40c76c100ac" xlink:href="https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd#srt_AircraftTypeMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_AircraftTypeAxis_6736d084-aac4-487f-add3-d2a9e51fd8e2" xlink:to="loc_srt_AircraftTypeMember_677b4ac1-ac02-4432-9ffb-c40c76c100ac" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_Boeing737MaxMember_b420999b-3d47-45f1-a023-e3c063e45a6b" xlink:href="aal-20211231.xsd#aal_Boeing737MaxMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_677b4ac1-ac02-4432-9ffb-c40c76c100ac" xlink:to="loc_aal_Boeing737MaxMember_b420999b-3d47-45f1-a023-e3c063e45a6b" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_1040bd78-1017-4deb-89a4-951364a31102" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_d2f78fe9-68c3-442c-a907-b7ff07869a6c" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_1040bd78-1017-4deb-89a4-951364a31102" xlink:type="arc" order="2"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_1040bd78-1017-4deb-89a4-951364a31102_default" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_1040bd78-1017-4deb-89a4-951364a31102" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_1040bd78-1017-4deb-89a4-951364a31102_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_55b7a0d1-94db-4c45-b988-69f4edde2e70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventTypeDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_1040bd78-1017-4deb-89a4-951364a31102" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_55b7a0d1-94db-4c45-b988-69f4edde2e70" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_becdc8e8-fd21-46bb-82fd-b141aa6d4cba" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubsequentEventMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_55b7a0d1-94db-4c45-b988-69f4edde2e70" xlink:to="loc_us-gaap_SubsequentEventMember_becdc8e8-fd21-46bb-82fd-b141aa6d4cba" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_7cc358e4-7340-48e2-b72e-3ae77dda6650" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LegalEntityAxis"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_d2f78fe9-68c3-442c-a907-b7ff07869a6c" xlink:to="loc_dei_LegalEntityAxis_7cc358e4-7340-48e2-b72e-3ae77dda6650" xlink:type="arc" order="3"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_7cc358e4-7340-48e2-b72e-3ae77dda6650_default" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_7cc358e4-7340-48e2-b72e-3ae77dda6650" xlink:to="loc_dei_EntityDomain_7cc358e4-7340-48e2-b72e-3ae77dda6650_default" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_5e933261-69d0-4da9-935f-93fe502dbbbb" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityDomain"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_7cc358e4-7340-48e2-b72e-3ae77dda6650" xlink:to="loc_dei_EntityDomain_5e933261-69d0-4da9-935f-93fe502dbbbb" xlink:type="arc" order="1"/>
<link:loc xlink:type="locator" xlink:label="loc_aal_AmericanAirlinesIncMember_8eb9ae52-dbc0-48fa-b2ea-78a62abce6ba" xlink:href="aal-20211231.xsd#aal_AmericanAirlinesIncMember"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_5e933261-69d0-4da9-935f-93fe502dbbbb" xlink:to="loc_aal_AmericanAirlinesIncMember_8eb9ae52-dbc0-48fa-b2ea-78a62abce6ba" xlink:type="arc" order="0"/>
</link:definitionLink>
<link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-roles-2021-01-31.xsd#eedm"/>
<link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfAdoptionMember" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_TypeOfAdoptionMember"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdate202006Member" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountingStandardsUpdate202006Member"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember" xlink:to="loc_us-gaap_AccountingStandardsUpdate202006Member" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization" xlink:type="arc" order="0"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
<link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent"/>
<link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:type="arc" order="0"/>
</link:definitionLink>
</link:linkbase>

6 Subsequent Filings that Reference this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/21/24  American Airlines Group Inc.      10-K       12/31/23  147:24M
 5/10/23  American Airlines Group Inc.      S-8         5/10/23    5:199K                                   Donnelley … Solutions/FA
 2/27/23  American Airlines Group Inc.      424B7                  2:483K                                   Donnelley … Solutions/FA
 2/24/23  American Airlines Group Inc.      S-3ASR      2/24/23   10:1.5M                                   Donnelley … Solutions/FA
 2/22/23  American Airlines Group Inc.      10-K       12/31/22  141:46M
 7/28/22  American Airlines Group Inc.      424B7                  2:447K                                   Donnelley … Solutions/FA

63 Previous Filings that this Filing References

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

12/22/21  American Airlines Group Inc.      8-K:1,3,5,912/21/21   14:636K                                   Donnelley … Solutions/FA
11/12/21  American Airlines, Inc.           8-K:1,2,9  11/08/21   21:4.9M                                   Donnelley … Solutions/FA
10/21/21  American Airlines Group Inc.      10-Q        9/30/21   71:13M
 7/22/21  American Airlines Group Inc.      10-Q        6/30/21   77:14M
 4/22/21  American Airlines Group Inc.      10-Q        3/31/21   77:15M
 2/17/21  American Airlines Group Inc.      10-K       12/31/20  160:42M
10/22/20  American Airlines Group Inc.      10-Q        9/30/20   83:21M
 7/23/20  American Airlines Group Inc.      10-Q        6/30/20   73:13M
 7/02/20  American Airlines Group Inc.      8-K:1,2,7,9 6/30/20   14:1.1M                                   Donnelley … Solutions/FA
 6/25/20  American Airlines Group Inc.      8-K:1,9     6/22/20   18:1.9M                                   Donnelley … Solutions/FA
 4/30/20  American Airlines Group Inc.      10-Q        3/31/20   81:14M
 2/26/20  American Airlines Group Inc.      8-K:2,9     2/25/20   13:926K                                   Donnelley … Solutions/FA
 2/19/20  American Airlines Group Inc.      10-K       12/31/19  135:29M
10/24/19  American Airlines Group Inc.      10-Q        9/30/19   77:12M
 8/15/19  American Airlines, Inc.           8-K:1,2,9   8/15/19   25:6.6M                                   Donnelley … Solutions/FA
 7/25/19  American Airlines Group Inc.      10-Q        6/30/19   77:13M
 5/21/19  American Airlines Group Inc.      8-K:1,2,9   5/20/19    2:602K                                   Donnelley … Solutions/FA
 4/26/19  American Airlines Group Inc.      10-Q        3/31/19   75:8.1M
 2/25/19  American Airlines Group Inc.      10-K       12/31/18  137:29M
10/25/18  American Airlines Group Inc.      10-Q        9/30/18   82:13M
 7/26/18  American Airlines Group Inc.      10-Q        6/30/18   82:15M
 6/13/18  American Airlines Group Inc.      8-K:5,9     6/13/18    3:235K                                   Donnelley … Solutions/FA
 5/16/18  American Airlines, Inc.           8-K:1,2,9   5/15/18    6:1.2M                                   Donnelley … Solutions/FA
 4/26/18  American Airlines Group Inc.      10-Q        3/31/18   76:9.1M
 2/21/18  American Airlines Group Inc.      10-K       12/31/17  136:27M
10/06/17  American Airlines, Inc.           8-K:1,2,9  10/05/17    8:4M                                     Donnelley … Solutions/FA
10/05/17  American Airlines, Inc.           8-K:1,2,9  10/04/17    6:2M                                     Donnelley … Solutions/FA
 8/14/17  American Airlines, Inc.           8-K:1,2,9   8/14/17   12:4.2M                                   Donnelley … Solutions/FA
 7/28/17  American Airlines Group Inc.      10-Q        6/30/17   76:6.6M                                   Donnelley … Solutions/FA
 5/01/17  American Airlines Group Inc.      8-K:5,9     4/25/17    2:35K                                    Donnelley … Solutions/FA
 4/27/17  American Airlines Group Inc.      10-Q        3/31/17   76:5.7M                                   Donnelley … Solutions/FA
 2/22/17  American Airlines Group Inc.      S-3ASR      2/22/17    8:1.3M                                   Donnelley … Solutions/FA
 2/22/17  American Airlines Group Inc.      10-K       12/31/16  145:24M                                    Donnelley … Solutions/FA
 1/17/17  American Airlines, Inc.           8-K:1,2,9   1/13/17   16:4.9M                                   Donnelley … Solutions/FA
10/20/16  American Airlines, Inc.           10-Q        9/30/16   75:7M                                     Donnelley … Solutions/FA
10/04/16  American Airlines, Inc.           8-K:1,2,9  10/03/16   12:3.6M                                   Donnelley … Solutions/FA
 7/22/16  American Airlines Group Inc.      10-Q        6/30/16   73:7.8M                                   Donnelley … Solutions/FA
 7/12/16  American Airlines, Inc.           8-K:1,2,9   7/08/16    7:3.3M                                   Donnelley … Solutions/FA
 5/17/16  American Airlines, Inc.           8-K:1,2,9   5/16/16   12:3.3M                                   Donnelley … Solutions/FA
 4/29/16  American Airlines Group Inc.      8-K:5,9     4/28/16    2:38K                                    Donnelley … Solutions/FA
 2/24/16  American Airlines Group Inc.      10-K       12/31/15  173:25M                                    Donnelley … Solutions/FA
 1/21/16  American Airlines, Inc.           8-K:1,2,9   1/19/16   10:2.8M                                   Donnelley … Solutions/FA
12/31/15  American Airlines Group Inc.      8-K:1,2,3,512/28/15    8:184K                                   Donnelley … Solutions/FA
 9/24/15  American Airlines, Inc.           8-K:1,2,9   9/24/15   10:2.7M                                   Donnelley … Solutions/FA
 7/24/15  American Airlines Group Inc.      10-Q        6/30/15   88:14M                                    Donnelley … Solutions/FA
 3/16/15  American Airlines, Inc.           8-K:1,2,9   3/16/15   14:3.3M                                   Donnelley … Solutions/FA
 9/17/14  American Airlines, Inc.           8-K:1,2,9   9/16/14   15:3.5M                                   Donnelley … Solutions/FA
 7/24/14  American Airlines, Inc.           10-Q        6/30/14   90:25M                                    American Airlines Gp Inc
 4/24/14  American Airlines Group Inc.      10-Q        3/31/14   89:20M
 2/28/14  American Airlines Group Inc.      10-K       12/31/13  155:45M
12/09/13  American Airlines Group Inc.      8-K:1,2,3,512/09/13   14:711K                                   Donnelley … Solutions/FA
12/04/13  American Airlines Group Inc.      S-8        12/04/13    4:349K                                   Donnelley … Solutions/FA
10/23/13  American Airlines Group Inc.      8-K:1,9    10/21/13    2:2M                                     Donnelley … Solutions/FA
 6/06/13  US Airways Group Inc.             8-K:1,2,9   6/06/13   14:1.5M                                   Donnelley … Solutions/FA
 4/25/13  US Airways Group Inc.             8-K:1,2,9   4/24/13   17:3.5M                                   Donnelley … Solutions/FA
12/13/12  US Airways Group Inc.             8-K:1,2,9  12/13/12   15:2.7M                                   Donnelley … Solutions/FA
 5/16/12  US Airways Group Inc.             8-K:1,2,9   5/14/12   22:4.3M                                   Donnelley … Solutions/FA
 7/01/11  US Airways Group Inc.             S-8         7/01/11    9:388K                                   Donnelley … Solutions/FA
 7/01/11  US Airways Group Inc.             8-K:1,2,9   6/28/11   22:2.9M                                   Donnelley … Solutions/FA
12/23/10  US Airways Group Inc.             8-K:1,2,9  12/21/10   18:2.7M                                   Donnelley … Solutions/FA
 2/19/09  American Airlines Group Inc.      10-K       12/31/08   70:5.6M
 2/21/08  US Airways Group Inc.             10-K       12/31/07   19:8.6M                                   Bowne - BPX/FA
11/29/07  US Airways Group Inc.             8-K:5,9    11/28/07    5:409K                                   Bowne - BPX/FA
↑Top
Filing Submission 0000006201-22-000026   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Mon., May 13, 8:28:50.7am ET