SEC Info - Delta Air Lines, Inc. - ‘10-Q’ for 9/30/19

SEC Info℠

Home

Help

Please Sign In

Delta Air Lines, Inc. – ‘10-Q’ for 9/30/19 – ‘EX-101.DEF’

On: Thursday, 10/10/19, at 4:21pm ET · For: 9/30/19 · Accession #: 27904-19-12 · File #: 1-05424

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

10/10/19  Delta Air Lines, Inc.             10-Q        9/30/19   70:8.9M

Quarterly Report — Form 10-Q — Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.25M 
 2: EX-10.1     Material Contract                                   HTML    204K 
 3: EX-15       Letter re: Unaudited Interim Financial Info         HTML     21K 
 4: EX-31.1     Certification -- §302 - SOA'02                      HTML     26K 
 5: EX-31.2     Certification -- §302 - SOA'02                      HTML     26K 
 6: EX-32       Certification -- §906 - SOA'02                      HTML     24K 
39: R1          Cover Page                                          HTML     72K 
59: R2          Consolidated Balance Sheets (Unaudited)             HTML    146K 
53: R3          Consolidated Balance Sheets (Unaudited)             HTML     43K 
                (Parentheticals)                                                 
15: R4          Condensed Consolidated Statements of Operations     HTML    104K 
                and Comprehensive Income (Unaudited)                             
38: R5          Condensed Consolidated Statements of Cash Flows     HTML     80K 
                (Unaudited)                                                      
58: R6          Consolidated Statements of Stockholders' Equity     HTML     99K 
                (Unaudited)                                                      
52: R7          Consolidated Statements of Stockholders' Equity     HTML     23K 
                (Unaudited) (Parentheticals)                                     
16: R8          Summary of Significant Accounting Policies          HTML     29K 
37: R9          Revenue Recognition                                 HTML    108K 
67: R10         Fair Value Measurements                             HTML     62K 
48: R11         Investments                                         HTML     41K 
26: R12         Derivatives and Risk Management                     HTML    135K 
32: R13         Debt                                                HTML     86K 
65: R14         Employee Benefit Plans                              HTML     63K 
47: R15         Commitments and Contingencies                       HTML     46K 
25: R16         Accumulated Other Comprehensive Loss                HTML     53K 
31: R17         Segments                                            HTML    120K 
68: R18         Earnings Per Share                                  HTML     45K 
45: R19         Summary of Significant Accounting Policies          HTML     29K 
                (Policies)                                                       
14: R20         Revenue Recognition (Tables)                        HTML    101K 
34: R21         Fair Value Measurements (Tables)                    HTML     55K 
61: R22         Derivatives and Risk Management (Tables)            HTML    155K 
55: R23         Debt (Tables)                                       HTML     93K 
13: R24         Employee Benefit Plans (Tables)                     HTML     63K 
33: R25         Commitments and Contingencies (Tables)              HTML     35K 
60: R26         Accumulated Other Comprehensive Loss (Tables)       HTML     53K 
54: R27         Segments (Tables)                                   HTML    119K 
12: R28         Earnings Per Share (Tables)                         HTML     44K 
36: R29         Summary of Significant Accounting Policies -        HTML     23K 
                Narrative (Details)                                              
29: R30         Revenue Recognition - Passenger Revenue (Details)   HTML     33K 
21: R31         Revenue Recognition - Narrative (Details)           HTML     28K 
49: R32         Revenue Recognition - Other Revenue (Details)       HTML     33K 
69: R33         Revenue Recognition - Loyalty Program Liability     HTML     31K 
                (Details)                                                        
30: R34         Revenue Recognition - Revenue by Geographic Region  HTML     40K 
                (Details)                                                        
22: R35         Fair Value Measurements - Schedule of Fair Value    HTML     69K 
                Measurements on a Recurring Basis (Details)                      
50: R36         Investments - Narrative (Details)                   HTML     80K 
70: R37         Derivatives and Risk Management - Hedge Position    HTML    100K 
                (Details)                                                        
28: R38         Derivatives and Risk Management - Balance Sheet     HTML     29K 
                Location of Hedged Item (Details)                                
24: R39         Derivatives and Risk Management - Offsetting        HTML     39K 
                Assets and Liabilities (Details)                                 
41: R40         Derivatives and Risk Management - Hedge Gains       HTML     40K 
                (Losses) (Details)                                               
17: R41         Debt - Summary of Debt (Details)                    HTML     80K 
56: R42         Debt - Narrative (Details)                          HTML     29K 
62: R43         Debt - 2019-1 EETC (Details)                        HTML     36K 
42: R44         Debt - Availability Under Revolving Credit          HTML     26K 
                Facilities (Details)                                             
18: R45         Debt - Fair Value of Debt (Details)                 HTML     32K 
57: R46         Employee Benefit Plans - Components of Net          HTML     49K 
                (Benefit) Cost (Details)                                         
63: R47         Commitments and Contingencies - Aircraft Purchase   HTML     38K 
                Commitments By Period (Details)                                  
40: R48         Commitments and Contingencies - Aircraft Purchase   HTML     37K 
                Commitments By Aircraft (Details)                                
19: R49         Commitments and Contingencies - Narrative           HTML     40K 
                (Details)                                                        
20: R50         Accumulated Other Comprehensive Loss - Schedule of  HTML     63K 
                AOCI Components (Details)                                        
27: R51         Segments - Narrative (Details)                      HTML     26K 
64: R52         Segments - Schedule of Segment Reporting (Details)  HTML     58K 
43: R53         Earnings Per Share - Schedule of Computation for    HTML     47K 
                Earnings Per Share Types (Details)                               
66: R9999       Uncategorized Items - dal930201910q.htm             HTML     20K 
44: XML         IDEA XML File -- Filing Summary                      XML    119K 
35: XML         XBRL Instance -- dal930201910q_htm                   XML   2.50M 
51: EXCEL       IDEA Workbook of Financial Reports                  XLSX     68K 
 8: EX-101.CAL  XBRL Calculations -- dal-20190930_cal                XML    197K 
 9: EX-101.DEF  XBRL Definitions -- dal-20190930_def                 XML    643K 
10: EX-101.LAB  XBRL Labels -- dal-20190930_lab                      XML   1.38M 
11: EX-101.PRE  XBRL Presentations -- dal-20190930_pre               XML    830K 
 7: EX-101.SCH  XBRL Schema -- dal-20190930                          XSD    135K 
23: JSON        XBRL Instance as JSON Data -- MetaLinks              307±   443K 
46: ZIP         XBRL Zipped Folder -- 0000027904-19-000012-xbrl      Zip    321K

‘EX-101.DEF’ — XBRL Definitions — dal-20190930_def

This Exhibit is an XBRL XML File.

<?xml version="1.0" encoding="windows-1252"?>

<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<link:roleRef roleURI="http://www.delta.com/role/AccumulatedOtherComprehensiveLoss" xlink:href="dal-20190930.xsd#AccumulatedOtherComprehensiveLoss" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/AccumulatedOtherComprehensiveLossScheduleOfAociComponentsDetails" xlink:href="dal-20190930.xsd#AccumulatedOtherComprehensiveLossScheduleOfAociComponentsDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/AccumulatedOtherComprehensiveLossTables" xlink:href="dal-20190930.xsd#AccumulatedOtherComprehensiveLossTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/CommitmentsAndContingencies" xlink:href="dal-20190930.xsd#CommitmentsAndContingencies" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/CommitmentsAndContingenciesAircraftPurchaseCommitmentsByAircraftDetails" xlink:href="dal-20190930.xsd#CommitmentsAndContingenciesAircraftPurchaseCommitmentsByAircraftDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/CommitmentsAndContingenciesAircraftPurchaseCommitmentsByPeriodDetails" xlink:href="dal-20190930.xsd#CommitmentsAndContingenciesAircraftPurchaseCommitmentsByPeriodDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/CommitmentsAndContingenciesNarrativeDetails" xlink:href="dal-20190930.xsd#CommitmentsAndContingenciesNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/CommitmentsAndContingenciesTables" xlink:href="dal-20190930.xsd#CommitmentsAndContingenciesTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:href="dal-20190930.xsd#CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/CondensedConsolidatedStatementsOfOperationsAndComprehensiveIncomeUnaudited" xlink:href="dal-20190930.xsd#CondensedConsolidatedStatementsOfOperationsAndComprehensiveIncomeUnaudited" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/ConsolidatedBalanceSheetsUnaudited" xlink:href="dal-20190930.xsd#ConsolidatedBalanceSheetsUnaudited" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/ConsolidatedBalanceSheetsUnauditedParentheticals" xlink:href="dal-20190930.xsd#ConsolidatedBalanceSheetsUnauditedParentheticals" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/ConsolidatedStatementsOfStockholdersEquityUnaudited" xlink:href="dal-20190930.xsd#ConsolidatedStatementsOfStockholdersEquityUnaudited" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/ConsolidatedStatementsOfStockholdersEquityUnauditedParentheticals" xlink:href="dal-20190930.xsd#ConsolidatedStatementsOfStockholdersEquityUnauditedParentheticals" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/CoverPage" xlink:href="dal-20190930.xsd#CoverPage" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/Debt" xlink:href="dal-20190930.xsd#Debt" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/Debt20191EetcDetails" xlink:href="dal-20190930.xsd#Debt20191EetcDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DebtAvailabilityUnderRevolvingCreditFacilitiesDetails" xlink:href="dal-20190930.xsd#DebtAvailabilityUnderRevolvingCreditFacilitiesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DebtFairValueOfDebtDetails" xlink:href="dal-20190930.xsd#DebtFairValueOfDebtDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DebtNarrativeDetails" xlink:href="dal-20190930.xsd#DebtNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DebtSummaryOfDebtDetails" xlink:href="dal-20190930.xsd#DebtSummaryOfDebtDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DebtTables" xlink:href="dal-20190930.xsd#DebtTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DerivativesAndRiskManagement" xlink:href="dal-20190930.xsd#DerivativesAndRiskManagement" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DerivativesAndRiskManagementBalanceSheetLocationOfHedgedItemDetails" xlink:href="dal-20190930.xsd#DerivativesAndRiskManagementBalanceSheetLocationOfHedgedItemDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DerivativesAndRiskManagementHedgeGainsLossesDetails" xlink:href="dal-20190930.xsd#DerivativesAndRiskManagementHedgeGainsLossesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DerivativesAndRiskManagementHedgePositionDetails" xlink:href="dal-20190930.xsd#DerivativesAndRiskManagementHedgePositionDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DerivativesAndRiskManagementOffsettingAssetsAndLiabilitiesDetails" xlink:href="dal-20190930.xsd#DerivativesAndRiskManagementOffsettingAssetsAndLiabilitiesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/DerivativesAndRiskManagementTables" xlink:href="dal-20190930.xsd#DerivativesAndRiskManagementTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/EarningsPerShare" xlink:href="dal-20190930.xsd#EarningsPerShare" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/EarningsPerShareScheduleOfComputationForEarningsPerShareTypesDetails" xlink:href="dal-20190930.xsd#EarningsPerShareScheduleOfComputationForEarningsPerShareTypesDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/EarningsPerShareTables" xlink:href="dal-20190930.xsd#EarningsPerShareTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/EmployeeBenefitPlans" xlink:href="dal-20190930.xsd#EmployeeBenefitPlans" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/EmployeeBenefitPlansComponentsOfNetBenefitCostDetails" xlink:href="dal-20190930.xsd#EmployeeBenefitPlansComponentsOfNetBenefitCostDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/EmployeeBenefitPlansTables" xlink:href="dal-20190930.xsd#EmployeeBenefitPlansTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/FairValueMeasurements" xlink:href="dal-20190930.xsd#FairValueMeasurements" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/FairValueMeasurementsScheduleOfFairValueMeasurementsOnRecurringBasisDetails" xlink:href="dal-20190930.xsd#FairValueMeasurementsScheduleOfFairValueMeasurementsOnRecurringBasisDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/FairValueMeasurementsTables" xlink:href="dal-20190930.xsd#FairValueMeasurementsTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/Investments" xlink:href="dal-20190930.xsd#Investments" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/InvestmentsNarrativeDetails" xlink:href="dal-20190930.xsd#InvestmentsNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/RevenueRecognition" xlink:href="dal-20190930.xsd#RevenueRecognition" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/RevenueRecognitionLoyaltyProgramLiabilityDetails" xlink:href="dal-20190930.xsd#RevenueRecognitionLoyaltyProgramLiabilityDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/RevenueRecognitionNarrativeDetails" xlink:href="dal-20190930.xsd#RevenueRecognitionNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/RevenueRecognitionOtherRevenueDetails" xlink:href="dal-20190930.xsd#RevenueRecognitionOtherRevenueDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/RevenueRecognitionPassengerRevenueDetails" xlink:href="dal-20190930.xsd#RevenueRecognitionPassengerRevenueDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/RevenueRecognitionRevenueByGeographicRegionDetails" xlink:href="dal-20190930.xsd#RevenueRecognitionRevenueByGeographicRegionDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/RevenueRecognitionTables" xlink:href="dal-20190930.xsd#RevenueRecognitionTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/Segments" xlink:href="dal-20190930.xsd#Segments" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/SegmentsNarrativeDetails" xlink:href="dal-20190930.xsd#SegmentsNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/SegmentsScheduleOfSegmentReportingDetails" xlink:href="dal-20190930.xsd#SegmentsScheduleOfSegmentReportingDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/SegmentsTables" xlink:href="dal-20190930.xsd#SegmentsTables" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="dal-20190930.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/SummaryOfSignificantAccountingPoliciesNarrativeDetails" xlink:href="dal-20190930.xsd#SummaryOfSignificantAccountingPoliciesNarrativeDetails" xlink:type="simple"/>

<link:roleRef roleURI="http://www.delta.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="dal-20190930.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple"/>

<link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple"/>

<link:definitionLink xlink:role="http://www.delta.com/role/AccumulatedOtherComprehensiveLoss" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/AccumulatedOtherComprehensiveLossScheduleOfAociComponentsDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4D685397FC0A5F70BB3BE8751335B8C1" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_62AF387D92D65FE187DC3D533E20DF22" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4D685397FC0A5F70BB3BE8751335B8C1" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_62AF387D92D65FE187DC3D533E20DF22" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_CD1BB119D4BD57A3BE9D9F55319A4269" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_62AF387D92D65FE187DC3D533E20DF22" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_CD1BB119D4BD57A3BE9D9F55319A4269" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_AF2090AF222F311F2078D7D0D5381362_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_CD1BB119D4BD57A3BE9D9F55319A4269" xlink:to="loc_us-gaap_EquityComponentDomain_AF2090AF222F311F2078D7D0D5381362_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_E1B518E696B75ACD86BB2E9D047B3E59" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_CD1BB119D4BD57A3BE9D9F55319A4269" xlink:to="loc_us-gaap_EquityComponentDomain_E1B518E696B75ACD86BB2E9D047B3E59" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_F77D7FDCA30B541FAB3F0E98C193CD65" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_E1B518E696B75ACD86BB2E9D047B3E59" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_F77D7FDCA30B541FAB3F0E98C193CD65" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_73F929135D2658C88B3287B569911664" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_F77D7FDCA30B541FAB3F0E98C193CD65" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_73F929135D2658C88B3287B569911664" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_BDAEAE54284C545ABBAA974E316D6166" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_F77D7FDCA30B541FAB3F0E98C193CD65" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_BDAEAE54284C545ABBAA974E316D6166" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:label="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_DB41C67354AB527F96F0CF6F3AFB2CED" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_F77D7FDCA30B541FAB3F0E98C193CD65" xlink:to="loc_us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember_DB41C67354AB527F96F0CF6F3AFB2CED" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:label="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_C3E5E3E8CAE55510A82EAA82611F868E" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_F77D7FDCA30B541FAB3F0E98C193CD65" xlink:to="loc_us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_C3E5E3E8CAE55510A82EAA82611F868E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4D685397FC0A5F70BB3BE8751335B8C1" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_3A3C6613D966518B8ECF24490108CF2D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:to="loc_us-gaap_StockholdersEquity_3A3C6613D966518B8ECF24490108CF2D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_FB9336B23CEB5F56A4E201CD96523F20" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_FB9336B23CEB5F56A4E201CD96523F20" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ReclassificationFromAccumulatedOtherComprehensiveIncomeToRetainedEarningsAdoptionOfAccountingStandardNetOfTax" xlink:label="loc_dal_ReclassificationFromAccumulatedOtherComprehensiveIncomeToRetainedEarningsAdoptionOfAccountingStandardNetOfTax_BBAF6F1F7BC15EF0B33B1FB84CF83C9E" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:to="loc_dal_ReclassificationFromAccumulatedOtherComprehensiveIncomeToRetainedEarningsAdoptionOfAccountingStandardNetOfTax_BBAF6F1F7BC15EF0B33B1FB84CF83C9E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_DABD8F1DF8F9585D9F09852FC22F7926" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_DABD8F1DF8F9585D9F09852FC22F7926" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AociTaxAttributableToParent" xlink:label="loc_us-gaap_AociTaxAttributableToParent_5F9C71AF7C835AA1AA236C20847E5A7C" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:to="loc_us-gaap_AociTaxAttributableToParent_5F9C71AF7C835AA1AA236C20847E5A7C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTax_44E112FE3D4F5AF186704515274CCA51" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTax_44E112FE3D4F5AF186704515274CCA51" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ReclassificationFromAccumulatedOtherComprehensiveIncomeToRetainedEarningsAdoptionOfAccountingStandardTax" xlink:label="loc_dal_ReclassificationFromAccumulatedOtherComprehensiveIncomeToRetainedEarningsAdoptionOfAccountingStandardTax_2EC8C69C0C295C47B4ABCBC3BC6D5FD0" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:to="loc_dal_ReclassificationFromAccumulatedOtherComprehensiveIncomeToRetainedEarningsAdoptionOfAccountingStandardTax_2EC8C69C0C295C47B4ABCBC3BC6D5FD0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_50A2E3FAD3E75C21AE06F9E64D3A6F70" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_6D09E476FA5B59739E5A7B7ACCF03E9B" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_50A2E3FAD3E75C21AE06F9E64D3A6F70" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_DeferredIncomeTaxExpenseBenefitPensionObligation" xlink:label="loc_dal_DeferredIncomeTaxExpenseBenefitPensionObligation_726D45C173A55D80B11BFDE3BB70AA90" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_4D685397FC0A5F70BB3BE8751335B8C1" xlink:to="loc_dal_DeferredIncomeTaxExpenseBenefitPensionObligation_726D45C173A55D80B11BFDE3BB70AA90" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/AccumulatedOtherComprehensiveLossTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/CommitmentsAndContingencies" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/CommitmentsAndContingenciesAircraftPurchaseCommitmentsByAircraftDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_6B42154D03CEA2E4CA02B122664E6151" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationTable" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_C97A5B26A53BA405A5D5B122664C21F9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_6B42154D03CEA2E4CA02B122664E6151" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_C97A5B26A53BA405A5D5B122664C21F9" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AircraftTypeAxis" xlink:label="loc_srt_AircraftTypeAxis_CFC712544CDA45969DC2B122664C6985" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_C97A5B26A53BA405A5D5B122664C21F9" xlink:to="loc_srt_AircraftTypeAxis_CFC712544CDA45969DC2B122664C6985" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AircraftTypeMember" xlink:label="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_AircraftTypeAxis_CFC712544CDA45969DC2B122664C6985" xlink:to="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_AircraftTypeAxis_CFC712544CDA45969DC2B122664C6985" xlink:to="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_A220100Member" xlink:label="loc_dal_A220100Member_1857417D586D61CF299FB122664C514B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99" xlink:to="loc_dal_A220100Member_1857417D586D61CF299FB122664C514B" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_A220300Member" xlink:label="loc_dal_A220300Member_822308D76809A646EC2DB122664CE620" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99" xlink:to="loc_dal_A220300Member_822308D76809A646EC2DB122664CE620" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_A321200Member" xlink:label="loc_dal_A321200Member_0861FB61B157CECD17D2B122664CC983" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99" xlink:to="loc_dal_A321200Member_0861FB61B157CECD17D2B122664CC983" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_A321200neoMember" xlink:label="loc_dal_A321200neoMember_BCE1440D5144416A74E9B122664C5EE8" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99" xlink:to="loc_dal_A321200neoMember_BCE1440D5144416A74E9B122664C5EE8" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_A330900neoMember" xlink:label="loc_dal_A330900neoMember_85DAF2C927C85CF1704FB122664C756E" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99" xlink:to="loc_dal_A330900neoMember_85DAF2C927C85CF1704FB122664C756E" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_A350900Member" xlink:label="loc_dal_A350900Member_A351BC4F3791C8C73AE7B122664D5629" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99" xlink:to="loc_dal_A350900Member_A351BC4F3791C8C73AE7B122664D5629" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CRJ900Member" xlink:label="loc_srt_CRJ900Member_E0E114148545340538D2B122664D2072" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_D663E956BFDC6D1330A9B122664CEA99" xlink:to="loc_srt_CRJ900Member_E0E114148545340538D2B122664D2072" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_25372DE323D5A7DDB711B122664DBF7A" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_C97A5B26A53BA405A5D5B122664C21F9" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_25372DE323D5A7DDB711B122664DBF7A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_9436F1AC82F19B9F187EB122664D6ABC_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_25372DE323D5A7DDB711B122664DBF7A" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_9436F1AC82F19B9F187EB122664D6ABC_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_25372DE323D5A7DDB711B122664DBF7A" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_9436F1AC82F19B9F187EB122664D6ABC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalAdditionsMember" xlink:label="loc_us-gaap_CapitalAdditionsMember_908D9C6D53BE49EC5D0BB122664D720A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_9436F1AC82F19B9F187EB122664D6ABC" xlink:to="loc_us-gaap_CapitalAdditionsMember_908D9C6D53BE49EC5D0BB122664D720A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequired" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequired_D4F186A6796B058DFAC0B122664EC3A1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_6B42154D03CEA2E4CA02B122664E6151" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationMinimumQuantityRequired_D4F186A6796B058DFAC0B122664EC3A1" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/CommitmentsAndContingenciesAircraftPurchaseCommitmentsByPeriodDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_24A35366918F8CBD37E1B122665E1490" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationTable" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_8AE3B640DFF345752AA9B1226658DBD4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_24A35366918F8CBD37E1B122665E1490" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_8AE3B640DFF345752AA9B1226658DBD4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_8246D424D3081E5028D6B12266585B21" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationTable_8AE3B640DFF345752AA9B1226658DBD4" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_8246D424D3081E5028D6B12266585B21" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_8B003B5641799B46321CB12266582FAF_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_8246D424D3081E5028D6B12266585B21" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_8B003B5641799B46321CB12266582FAF_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_8B003B5641799B46321CB12266582FAF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_8246D424D3081E5028D6B12266585B21" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_8B003B5641799B46321CB12266582FAF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalAdditionsMember" xlink:label="loc_us-gaap_CapitalAdditionsMember_21F62E2100806A7F809FB122665EFEC9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_8B003B5641799B46321CB12266582FAF" xlink:to="loc_us-gaap_CapitalAdditionsMember_21F62E2100806A7F809FB122665EFEC9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_EF7AE966312BEE92F864B122665E20EF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationLineItems_24A35366918F8CBD37E1B122665E1490" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_EF7AE966312BEE92F864B122665E20EF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_2D29D7BD18087A14F405B122665FA9A0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_EF7AE966312BEE92F864B122665E20EF" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueInRemainderOfFiscalYear_2D29D7BD18087A14F405B122665FA9A0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary_1AB5643EBE34C268312FB122665F1BA8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_EF7AE966312BEE92F864B122665E20EF" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnSecondAnniversary_1AB5643EBE34C268312FB122665F1BA8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary_E775E86278D9577627C6B122665F7749" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_EF7AE966312BEE92F864B122665E20EF" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnThirdAnniversary_E775E86278D9577627C6B122665F7749" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary_0D98052B701315517E66B122665F7AC4" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_EF7AE966312BEE92F864B122665E20EF" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFourthAnniversary_0D98052B701315517E66B122665F7AC4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary_0A4523890A13BF05F26FB122665F2105" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_EF7AE966312BEE92F864B122665E20EF" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceOnFifthAnniversary_0A4523890A13BF05F26FB122665F2105" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears_3D89AF1C9A833AC0D669B122665F294C" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_EF7AE966312BEE92F864B122665E20EF" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationDueAfterFiveYears_3D89AF1C9A833AC0D669B122665F294C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_9804F6940312C1742141B12266603425" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationAbstract_EF7AE966312BEE92F864B122665E20EF" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_9804F6940312C1742141B12266603425" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/CommitmentsAndContingenciesNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_410678B0E11B419D6065B122663CFB64" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_C6C00F20405E952F5991B12266331D60" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_410678B0E11B419D6065B122663CFB64" xlink:to="loc_us-gaap_LossContingenciesTable_C6C00F20405E952F5991B12266331D60" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_DD9A2FA3787C1C6205F9B1226634DB12" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_C6C00F20405E952F5991B12266331D60" xlink:to="loc_srt_CounterpartyNameAxis_DD9A2FA3787C1C6205F9B1226634DB12" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_76FCC62A0507E937BB6FB12266340FB4_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_CounterpartyNameAxis_DD9A2FA3787C1C6205F9B1226634DB12" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_76FCC62A0507E937BB6FB12266340FB4_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_CounterpartyNameAxis_DD9A2FA3787C1C6205F9B1226634DB12" xlink:to="loc_srt_RepurchaseAgreementCounterpartyNameDomain_76FCC62A0507E937BB6FB12266340FB4" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_LATAMAirlinesGroupS.A.Member" xlink:label="loc_dal_LATAMAirlinesGroupS.A.Member_D605413C20B0547FBCB8B12266341644" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_76FCC62A0507E937BB6FB12266340FB4" xlink:to="loc_dal_LATAMAirlinesGroupS.A.Member_D605413C20B0547FBCB8B12266341644" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="loc_us-gaap_RestructuringPlanAxis_90DEF64484E7DF8869F5B122663B46CC" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_C6C00F20405E952F5991B12266331D60" xlink:to="loc_us-gaap_RestructuringPlanAxis_90DEF64484E7DF8869F5B122663B46CC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_D02498F51367C5027344B122663BB5E1_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_90DEF64484E7DF8869F5B122663B46CC" xlink:to="loc_us-gaap_RestructuringPlanDomain_D02498F51367C5027344B122663BB5E1_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_90DEF64484E7DF8869F5B122663B46CC" xlink:to="loc_us-gaap_RestructuringPlanDomain_D02498F51367C5027344B122663BB5E1" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_AirlineFleetRetirementMember" xlink:label="loc_dal_AirlineFleetRetirementMember_9274B0476763617D9523B122663CB682" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_D02498F51367C5027344B122663BB5E1" xlink:to="loc_dal_AirlineFleetRetirementMember_9274B0476763617D9523B122663CB682" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AircraftTypeAxis" xlink:label="loc_srt_AircraftTypeAxis_1FDDC34FEB37655597EEB122663569D4" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_C6C00F20405E952F5991B12266331D60" xlink:to="loc_srt_AircraftTypeAxis_1FDDC34FEB37655597EEB122663569D4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AircraftTypeMember" xlink:label="loc_srt_AircraftTypeMember_5F63779A873942F6CA99B1226636EC22_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_AircraftTypeAxis_1FDDC34FEB37655597EEB122663569D4" xlink:to="loc_srt_AircraftTypeMember_5F63779A873942F6CA99B1226636EC22_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_AircraftTypeAxis_1FDDC34FEB37655597EEB122663569D4" xlink:to="loc_srt_AircraftTypeMember_5F63779A873942F6CA99B1226636EC22" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_MD90Member" xlink:label="loc_dal_MD90Member_E1899CE6A1DB6233610EB1226636621F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_5F63779A873942F6CA99B1226636EC22" xlink:to="loc_dal_MD90Member_E1899CE6A1DB6233610EB1226636621F" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_A350900Member" xlink:label="loc_dal_A350900Member_9638B3C388B9600D6DC5B122663B482A" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_AircraftTypeMember_5F63779A873942F6CA99B1226636EC22" xlink:to="loc_dal_A350900Member_9638B3C388B9600D6DC5B122663B482A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_AB7FDE97C2B441FD3F59B12266359E1D" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_C6C00F20405E952F5991B12266331D60" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_AB7FDE97C2B441FD3F59B12266359E1D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_ED0BAEA7EA2FFED263BFB122663507B4_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_AB7FDE97C2B441FD3F59B12266359E1D" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_ED0BAEA7EA2FFED263BFB122663507B4_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_ED0BAEA7EA2FFED263BFB122663507B4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_AB7FDE97C2B441FD3F59B12266359E1D" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_ED0BAEA7EA2FFED263BFB122663507B4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalAdditionsMember" xlink:label="loc_us-gaap_CapitalAdditionsMember_359C46CBAAB02C843F1BB1226635E061" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_ED0BAEA7EA2FFED263BFB122663507B4" xlink:to="loc_us-gaap_CapitalAdditionsMember_359C46CBAAB02C843F1BB1226635E061" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount" xlink:label="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_CB9FF83050EEF69A7371B12463310EE7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_410678B0E11B419D6065B122663CFB64" xlink:to="loc_us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount_CB9FF83050EEF69A7371B12463310EE7" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_AircraftFleetRetirementTimeOfRetirementAheadOfPlan" xlink:label="loc_dal_AircraftFleetRetirementTimeOfRetirementAheadOfPlan_CC3A32C869B769E5ED89B122663C157A" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_410678B0E11B419D6065B122663CFB64" xlink:to="loc_dal_AircraftFleetRetirementTimeOfRetirementAheadOfPlan_CC3A32C869B769E5ED89B122663C157A" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_NumberOfAircraftPermanentlyRetired" xlink:label="loc_dal_NumberOfAircraftPermanentlyRetired_F88E8D32061EC595D4D1B122663CE124" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_410678B0E11B419D6065B122663CFB64" xlink:to="loc_dal_NumberOfAircraftPermanentlyRetired_F88E8D32061EC595D4D1B122663CE124" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestructuringReserveAcceleratedDepreciation" xlink:label="loc_us-gaap_RestructuringReserveAcceleratedDepreciation_F028B18F7A3CDC761E37B122663C0939" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_410678B0E11B419D6065B122663CFB64" xlink:to="loc_us-gaap_RestructuringReserveAcceleratedDepreciation_F028B18F7A3CDC761E37B122663C0939" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_NumberOfAircraftAcquiredPlanned" xlink:label="loc_dal_NumberOfAircraftAcquiredPlanned_96BB508508B68BD62350B122663C4500" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_410678B0E11B419D6065B122663CFB64" xlink:to="loc_dal_NumberOfAircraftAcquiredPlanned_96BB508508B68BD62350B122663C4500" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_NumberOfAircraftCommitmentsToBeAssumed" xlink:label="loc_dal_NumberOfAircraftCommitmentsToBeAssumed_A9CF9A9FDC36CA1C097AB122663CFB53" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_410678B0E11B419D6065B122663CFB64" xlink:to="loc_dal_NumberOfAircraftCommitmentsToBeAssumed_A9CF9A9FDC36CA1C097AB122663CFB53" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/CommitmentsAndContingenciesTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/CondensedConsolidatedStatementsOfOperationsAndComprehensiveIncomeUnaudited" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_76EC9E2C7CAD23D050B045F974F511A4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_StatementTable_76EC9E2C7CAD23D050B045F974F511A4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_F93AE1E3B26ED702E09145F974F68886" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_76EC9E2C7CAD23D050B045F974F511A4" xlink:to="loc_srt_ProductOrServiceAxis_F93AE1E3B26ED702E09145F974F68886" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_4B3424B76669206D799D45F974F6AFD6_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_F93AE1E3B26ED702E09145F974F68886" xlink:to="loc_srt_ProductsAndServicesDomain_4B3424B76669206D799D45F974F6AFD6_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_F93AE1E3B26ED702E09145F974F68886" xlink:to="loc_srt_ProductsAndServicesDomain_4B3424B76669206D799D45F974F6AFD6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PassengerMember" xlink:label="loc_us-gaap_PassengerMember_6480BF7FA70959C047D045F974F6A2E6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4B3424B76669206D799D45F974F6AFD6" xlink:to="loc_us-gaap_PassengerMember_6480BF7FA70959C047D045F974F6A2E6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CargoAndFreightMember" xlink:label="loc_us-gaap_CargoAndFreightMember_EF757D7C25C8BE11B2EE45F974F67FDA" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4B3424B76669206D799D45F974F6AFD6" xlink:to="loc_us-gaap_CargoAndFreightMember_EF757D7C25C8BE11B2EE45F974F67FDA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductAndServiceOtherMember" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_B9F17D9E55B8FB043FBE45F974F757AE" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_4B3424B76669206D799D45F974F6AFD6" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_B9F17D9E55B8FB043FBE45F974F757AE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_7ED730E19A6577EC074C45F974F7CB1B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_RevenuesAbstract_7ED730E19A6577EC074C45F974F7CB1B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_BC248E9B5E8863BDE12045F974F78EBB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesAbstract_7ED730E19A6577EC074C45F974F7CB1B" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_BC248E9B5E8863BDE12045F974F78EBB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:label="loc_us-gaap_LaborAndRelatedExpense_AF64CCF926950853665745F974F8CF5F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_LaborAndRelatedExpense_AF64CCF926950853665745F974F8CF5F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FuelCosts" xlink:label="loc_us-gaap_FuelCosts_67A4E31564FCBB92CBD545F974F8E24A" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_FuelCosts_67A4E31564FCBB92CBD545F974F8E24A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AirlineCapacityPurchaseArrangements" xlink:label="loc_us-gaap_AirlineCapacityPurchaseArrangements_40E67E45548F28F8336745F974F81CA9" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_AirlineCapacityPurchaseArrangements_40E67E45548F28F8336745F974F81CA9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfessionalAndContractServicesExpense" xlink:label="loc_us-gaap_ProfessionalAndContractServicesExpense_D83BD8461B17C508CE6D45F974F97C17" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_ProfessionalAndContractServicesExpense_D83BD8461B17C508CE6D45F974F97C17" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_04B7C8656B802F9BC58D45F974F8DA57" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_04B7C8656B802F9BC58D45F974F8DA57" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SellingAndMarketingExpense" xlink:label="loc_us-gaap_SellingAndMarketingExpense_CFF75243C82663C1D41D45F974F9B189" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_SellingAndMarketingExpense_CFF75243C82663C1D41D45F974F9B189" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AircraftMaintenanceMaterialsAndRepairs" xlink:label="loc_us-gaap_AircraftMaintenanceMaterialsAndRepairs_E0466994E3C3ACA174E545F974F92A04" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_AircraftMaintenanceMaterialsAndRepairs_E0466994E3C3ACA174E545F974F92A04" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LandingFeesAndOtherRentals" xlink:label="loc_us-gaap_LandingFeesAndOtherRentals_63BCD3FCDBB713E3FF9745F974F9F37B" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_LandingFeesAndOtherRentals_63BCD3FCDBB713E3FF9745F974F9F37B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLaborRelatedExpenses" xlink:label="loc_us-gaap_OtherLaborRelatedExpenses_4C54682A8F0E5D65433E45F974F98236" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_OtherLaborRelatedExpenses_4C54682A8F0E5D65433E45F974F98236" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_AncillaryBusinessesAndRefineryExpenses" xlink:label="loc_dal_AncillaryBusinessesAndRefineryExpenses_0A7D446DE7D69D39A13B45F974F95454" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_dal_AncillaryBusinessesAndRefineryExpenses_0A7D446DE7D69D39A13B45F974F95454" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfServicesCatering" xlink:label="loc_us-gaap_CostOfServicesCatering_79F6CCD2F7B5868B23F245F974FA7229" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_CostOfServicesCatering_79F6CCD2F7B5868B23F245F974FA7229" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AircraftRental" xlink:label="loc_us-gaap_AircraftRental_6EA0B6E33EAD186B7ECE45F974FA4C98" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_AircraftRental_6EA0B6E33EAD186B7ECE45F974FA4C98" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCostAndExpenseOperating" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_536962D139340E84654A45F974FA8DE8" xlink:type="locator"/>

<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_536962D139340E84654A45F974FA8DE8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_F40A7ED72B329CA2273045F974FA691D" xlink:type="locator"/>

<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingExpensesAbstract_7EEFAD92252EDB48BE9645F974F8DF2D" xlink:to="loc_us-gaap_OperatingExpenses_F40A7ED72B329CA2273045F974FA691D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_2415E5D1FF49C58F698245F974FA557D" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_OperatingIncomeLoss_2415E5D1FF49C58F698245F974FA557D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_41A7928A639CFA03790945F974FB4FC5" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_NonoperatingIncomeExpenseAbstract_41A7928A639CFA03790945F974FB4FC5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_B0CFE2EEF806E6420A8045F974FB72DA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_41A7928A639CFA03790945F974FB4FC5" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_B0CFE2EEF806E6420A8045F974FB72DA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnInvestments" xlink:label="loc_us-gaap_GainLossOnInvestments_4CA42BD2A62BAF47BB7745F974FB8C98" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_41A7928A639CFA03790945F974FB4FC5" xlink:to="loc_us-gaap_GainLossOnInvestments_4CA42BD2A62BAF47BB7745F974FB8C98" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_166DD8211A3937F9AE8A45F974FBDBE5" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_41A7928A639CFA03790945F974FB4FC5" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_166DD8211A3937F9AE8A45F974FBDBE5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_9442E27770E73235E08D45F974FBEBBD" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_41A7928A639CFA03790945F974FB4FC5" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_9442E27770E73235E08D45F974FBEBBD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_829388BD7914EDACB72A45F974FC3DB8" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_829388BD7914EDACB72A45F974FC3DB8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_F8DE0D1C1E5AF206357E45F974FCB7FA" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_F8DE0D1C1E5AF206357E45F974FCB7FA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_BCEF705BCD77E694F30A45F974FC3035" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_NetIncomeLoss_BCEF705BCD77E694F30A45F974FC3035" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_13C59ECE2509FCE0762B45F974FC1D04" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_EarningsPerShareBasic_13C59ECE2509FCE0762B45F974FC1D04" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_B38538F468980DCB9EAA45F974FC4AE2" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_EarningsPerShareDiluted_B38538F468980DCB9EAA45F974FC4AE2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_6570FA05673BAAB73A5545F974FC7415" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_CommonStockDividendsPerShareDeclared_6570FA05673BAAB73A5545F974FC7415" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_434E19C61982586C763E45F974FC9818" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_61A0EB509ABEF4B7FEB745F974F767D7" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_434E19C61982586C763E45F974FC9818" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/ConsolidatedBalanceSheetsUnaudited" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_2DD1184E9ED57073F50AA3475F1AC7EE" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_6D6DB0C8E84E983A4E80A3475F19947D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_2DD1184E9ED57073F50AA3475F1AC7EE" xlink:to="loc_us-gaap_StatementTable_6D6DB0C8E84E983A4E80A3475F19947D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_1EB6ED6DBB3E40EE879CA3475F19D923" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_6D6DB0C8E84E983A4E80A3475F19947D" xlink:to="loc_srt_ProductOrServiceAxis_1EB6ED6DBB3E40EE879CA3475F19D923" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_A5675A3DA93785B582EFA3475F19A5F1_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_1EB6ED6DBB3E40EE879CA3475F19D923" xlink:to="loc_srt_ProductsAndServicesDomain_A5675A3DA93785B582EFA3475F19A5F1_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_A5675A3DA93785B582EFA3475F19A5F1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_1EB6ED6DBB3E40EE879CA3475F19D923" xlink:to="loc_srt_ProductsAndServicesDomain_A5675A3DA93785B582EFA3475F19A5F1" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_PassengerAirTrafficMember" xlink:label="loc_dal_PassengerAirTrafficMember_9C8141EC892073F92F6FA3475F1AE797" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_A5675A3DA93785B582EFA3475F19A5F1" xlink:to="loc_dal_PassengerAirTrafficMember_9C8141EC892073F92F6FA3475F1AE797" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ProductAndServiceOtherLoyaltyProgramMember" xlink:label="loc_dal_ProductAndServiceOtherLoyaltyProgramMember_2046666F19D8152A1A47A3475F1A7544" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_A5675A3DA93785B582EFA3475F19A5F1" xlink:to="loc_dal_ProductAndServiceOtherLoyaltyProgramMember_2046666F19D8152A1A47A3475F1A7544" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_0501C1F745D048A3C322A3475F1A6368" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2DD1184E9ED57073F50AA3475F1AC7EE" xlink:to="loc_us-gaap_AssetsAbstract_0501C1F745D048A3C322A3475F1A6368" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_9507FA2EE28A2B786512A3475F1BDA43" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_0501C1F745D048A3C322A3475F1A6368" xlink:to="loc_us-gaap_AssetsCurrentAbstract_9507FA2EE28A2B786512A3475F1BDA43" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_0FD08DFA398A430CC8BEA3475F1B51CA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_9507FA2EE28A2B786512A3475F1BDA43" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_0FD08DFA398A430CC8BEA3475F1B51CA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_954E9487B04A8749B4E4A3475F1B55AA" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_9507FA2EE28A2B786512A3475F1BDA43" xlink:to="loc_us-gaap_ReceivablesNetCurrent_954E9487B04A8749B4E4A3475F1B55AA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryFinishedGoods" xlink:label="loc_us-gaap_InventoryFinishedGoods_60BC49433D00E85295E5A3475F1BBC7D" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_9507FA2EE28A2B786512A3475F1BDA43" xlink:to="loc_us-gaap_InventoryFinishedGoods_60BC49433D00E85295E5A3475F1BBC7D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AirlineRelatedInventoryNet" xlink:label="loc_us-gaap_AirlineRelatedInventoryNet_A17D9DBEEB41782D8A6AA3475F1C4DCF" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_9507FA2EE28A2B786512A3475F1BDA43" xlink:to="loc_us-gaap_AirlineRelatedInventoryNet_A17D9DBEEB41782D8A6AA3475F1C4DCF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_9EE96416ED6BC6C97CC9A3475F1C2E9C" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_9507FA2EE28A2B786512A3475F1BDA43" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_9EE96416ED6BC6C97CC9A3475F1C2E9C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_7CE1293DAC5A87A68F1DA3475F1C4646" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsCurrentAbstract_9507FA2EE28A2B786512A3475F1BDA43" xlink:to="loc_us-gaap_AssetsCurrent_7CE1293DAC5A87A68F1DA3475F1C4646" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsNoncurrentAbstract" xlink:label="loc_us-gaap_AssetsNoncurrentAbstract_25C224F543777626A65FA3475F1CA415" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_0501C1F745D048A3C322A3475F1A6368" xlink:to="loc_us-gaap_AssetsNoncurrentAbstract_25C224F543777626A65FA3475F1CA415" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_D4448CD14E5813692B6BA3475F1CB3AF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_25C224F543777626A65FA3475F1CA415" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_D4448CD14E5813692B6BA3475F1CB3AF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_21B03F55B11FD6957FD5A3475F1CF54C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_25C224F543777626A65FA3475F1CA415" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_21B03F55B11FD6957FD5A3475F1CF54C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_F4232DE58C61A6273786A3475F1D029E" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_25C224F543777626A65FA3475F1CA415" xlink:to="loc_us-gaap_Goodwill_F4232DE58C61A6273786A3475F1D029E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_7B173D3401E9B744E7DCA3475F1DE854" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_25C224F543777626A65FA3475F1CA415" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_7B173D3401E9B744E7DCA3475F1DE854" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_89F47DD5E73B940A2E9CA3475F1DBB3C" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_25C224F543777626A65FA3475F1CA415" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_89F47DD5E73B940A2E9CA3475F1DBB3C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_453147620588DF16E513A3475F1DAAAF" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_25C224F543777626A65FA3475F1CA415" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_453147620588DF16E513A3475F1DAAAF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:label="loc_us-gaap_AssetsNoncurrent_7FCCE80130A2D371E0A7A3475F1D9250" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsNoncurrentAbstract_25C224F543777626A65FA3475F1CA415" xlink:to="loc_us-gaap_AssetsNoncurrent_7FCCE80130A2D371E0A7A3475F1D9250" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_81F4A9BE9F1464AC75E0A3475F1DA4ED" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract_0501C1F745D048A3C322A3475F1A6368" xlink:to="loc_us-gaap_Assets_81F4A9BE9F1464AC75E0A3475F1DA4ED" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1BE301449D137248564FA3475F1EEBD7" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_2DD1184E9ED57073F50AA3475F1AC7EE" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1BE301449D137248564FA3475F1EEBD7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1BE301449D137248564FA3475F1EEBD7" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_DFD699835C3682095970A3475F1E73DD" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligationsCurrent_DFD699835C3682095970A3475F1E73DD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_9D80DDC2F180260F94F3A3475F1E0408" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_9D80DDC2F180260F94F3A3475F1E0408" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityCurrent" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_9CC531AF986089C3EFACA3475F1F2E07" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_9CC531AF986089C3EFACA3475F1F2E07" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_6B4AA9C2AA07458A4534A3475F1FE90E" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:to="loc_us-gaap_AccountsPayableCurrent_6B4AA9C2AA07458A4534A3475F1FE90E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_4169631CAC273E8AD959A3475F1F9028" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_4169631CAC273E8AD959A3475F1F9028" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermNonBankLoansAndNotesPayable" xlink:label="loc_us-gaap_ShortTermNonBankLoansAndNotesPayable_34ED08EFB970053F65B0A3475F1F2E32" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:to="loc_us-gaap_ShortTermNonBankLoansAndNotesPayable_34ED08EFB970053F65B0A3475F1F2E32" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_07979A3605BC61A91BBBA3475F1FF2FC" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_07979A3605BC61A91BBBA3475F1FF2FC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_C2ADA2DD1F94930A64FFA3475F1F3C99" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_24A8FC6A402742DC80DBA3475F1EC6B2" xlink:to="loc_us-gaap_LiabilitiesCurrent_C2ADA2DD1F94930A64FFA3475F1F3C99" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_49237795D51AA2C0E14EA3475F201790" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1BE301449D137248564FA3475F1EEBD7" xlink:to="loc_us-gaap_LiabilitiesNoncurrentAbstract_49237795D51AA2C0E14EA3475F201790" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_E568D4C344ACB3B120A3A3475F205E21" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_49237795D51AA2C0E14EA3475F201790" xlink:to="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations_E568D4C344ACB3B120A3A3475F205E21" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_218566678665D9C281EBA3475F205316" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_49237795D51AA2C0E14EA3475F201790" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_218566678665D9C281EBA3475F205316" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityNoncurrent" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_E942632B71D8A320D2B4A3475F208FE7" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_49237795D51AA2C0E14EA3475F201790" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityNoncurrent_E942632B71D8A320D2B4A3475F208FE7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_1D5194F4695541322131A3475F25AE2A" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_49237795D51AA2C0E14EA3475F201790" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_1D5194F4695541322131A3475F25AE2A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_08CDE160BF03043CCDC6A3475F26FFFE" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_49237795D51AA2C0E14EA3475F201790" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_08CDE160BF03043CCDC6A3475F26FFFE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_D7DE9797337A77D001E8A3475F26AD0F" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_49237795D51AA2C0E14EA3475F201790" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_D7DE9797337A77D001E8A3475F26AD0F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_A4E90F5B2FB72F6BD4D4A3475F26E0B4" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_49237795D51AA2C0E14EA3475F201790" xlink:to="loc_us-gaap_LiabilitiesNoncurrent_A4E90F5B2FB72F6BD4D4A3475F26E0B4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_6155ACFA439477C03E4CA3475F26628B" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1BE301449D137248564FA3475F1EEBD7" xlink:to="loc_us-gaap_CommitmentsAndContingencies_6155ACFA439477C03E4CA3475F26628B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_F8C5440C3EEA3DF5AE2FA3475F26E401" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1BE301449D137248564FA3475F1EEBD7" xlink:to="loc_us-gaap_StockholdersEquityAbstract_F8C5440C3EEA3DF5AE2FA3475F26E401" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_D7478D20C186323B8257A3475F26FC09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_F8C5440C3EEA3DF5AE2FA3475F26E401" xlink:to="loc_us-gaap_CommonStockValue_D7478D20C186323B8257A3475F26FC09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_1177D91D2C3C524AFA31A3475F270014" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_F8C5440C3EEA3DF5AE2FA3475F26E401" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_1177D91D2C3C524AFA31A3475F270014" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_30D3A11DC976E084D6DDA3475F27F35B" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_F8C5440C3EEA3DF5AE2FA3475F26E401" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_30D3A11DC976E084D6DDA3475F27F35B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D761A239B63139193623A3475F279507" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_F8C5440C3EEA3DF5AE2FA3475F26E401" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_D761A239B63139193623A3475F279507" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockValue" xlink:label="loc_us-gaap_TreasuryStockValue_36976D96C206C90542FDA3475F270650" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_F8C5440C3EEA3DF5AE2FA3475F26E401" xlink:to="loc_us-gaap_TreasuryStockValue_36976D96C206C90542FDA3475F270650" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_1F3B8E6DE76CBE09F83EA3475F27F472" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StockholdersEquityAbstract_F8C5440C3EEA3DF5AE2FA3475F26E401" xlink:to="loc_us-gaap_StockholdersEquity_1F3B8E6DE76CBE09F83EA3475F27F472" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_0A3D9CC6FAD0AE4D7A66A3475F28FAD3" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_1BE301449D137248564FA3475F1EEBD7" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_0A3D9CC6FAD0AE4D7A66A3475F28FAD3" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/ConsolidatedBalanceSheetsUnauditedParentheticals" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/ConsolidatedStatementsOfStockholdersEquityUnaudited" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_2F6A00681039DD71BA19A2355BC4D842" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_StatementTable_2F6A00681039DD71BA19A2355BC4D842" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_EE3E42F8A420B47D5011A2355BC586B1" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_2F6A00681039DD71BA19A2355BC4D842" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_EE3E42F8A420B47D5011A2355BC586B1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_F5AB8507340BBFEBE782A2355BC5FB8C_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_EE3E42F8A420B47D5011A2355BC586B1" xlink:to="loc_us-gaap_EquityComponentDomain_F5AB8507340BBFEBE782A2355BC5FB8C_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_F5AB8507340BBFEBE782A2355BC5FB8C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_EE3E42F8A420B47D5011A2355BC586B1" xlink:to="loc_us-gaap_EquityComponentDomain_F5AB8507340BBFEBE782A2355BC5FB8C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_7193225B23C315773A19A2355BC5482B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F5AB8507340BBFEBE782A2355BC5FB8C" xlink:to="loc_us-gaap_CommonStockMember_7193225B23C315773A19A2355BC5482B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_A38BED291EA1D1A89EC4A2355BC666F8" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F5AB8507340BBFEBE782A2355BC5FB8C" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_A38BED291EA1D1A89EC4A2355BC666F8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_3770043D5E532480516FA2355BC62F2C" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F5AB8507340BBFEBE782A2355BC5FB8C" xlink:to="loc_us-gaap_RetainedEarningsMember_3770043D5E532480516FA2355BC62F2C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_B589430471F38B5B1FF4A2355BC6EEA4" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F5AB8507340BBFEBE782A2355BC5FB8C" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_B589430471F38B5B1FF4A2355BC6EEA4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockMember" xlink:label="loc_us-gaap_TreasuryStockMember_190F2A4457DA75CBC4BEA2355BC6FB62" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F5AB8507340BBFEBE782A2355BC5FB8C" xlink:to="loc_us-gaap_TreasuryStockMember_190F2A4457DA75CBC4BEA2355BC6FB62" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_D8EEC7AF1A6E02AA24D8A2355BC678FC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_StockholdersEquity_D8EEC7AF1A6E02AA24D8A2355BC678FC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharesIssued" xlink:label="loc_us-gaap_SharesIssued_5342FFA22EB1076EDE40A2355BC74875" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_SharesIssued_5342FFA22EB1076EDE40A2355BC74875" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_765FE5517E3B8A9DF166A2355BC7EBA0" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_NetIncomeLoss_765FE5517E3B8A9DF166A2355BC7EBA0" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_CumulativeEffectOfChangeInAccountingPrincipleAndOther" xlink:label="loc_dal_CumulativeEffectOfChangeInAccountingPrincipleAndOther_B27E18BA77999FDF39C7A2355BC79AAB" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_dal_CumulativeEffectOfChangeInAccountingPrincipleAndOther_B27E18BA77999FDF39C7A2355BC79AAB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Dividends" xlink:label="loc_us-gaap_Dividends_2D17BD10358B0339026EA2355BC77E56" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_Dividends_2D17BD10358B0339026EA2355BC77E56" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_5A29F06484749512961DA2355BC77DAB" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_5A29F06484749512961DA2355BC77DAB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_514399EBBFF7908D3361A2355BC8419D" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_514399EBBFF7908D3361A2355BC8419D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_454DC4185BA209C7BAB1A2355BC8C9EC" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_454DC4185BA209C7BAB1A2355BC8C9EC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_2076A52CF016D6084B40A2355BC8FD11" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_2076A52CF016D6084B40A2355BC8FD11" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_3CBFF1466C2B4D653DA1A2355BC8851E" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_3CBFF1466C2B4D653DA1A2355BC8851E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_7370484BEB06387B171EA2355BC83C55" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_7370484BEB06387B171EA2355BC83C55" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_4E9C5FBF0E9BCD1C0B49A2355BC88F2B" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_33A60C868F9A75A4521EA2355BC67B9D" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_4E9C5FBF0E9BCD1C0B49A2355BC88F2B" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/ConsolidatedStatementsOfStockholdersEquityUnauditedParentheticals" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/CoverPage" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/Debt" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/Debt20191EetcDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_5C80A91068BC57DAA17320A5B25B6FE6" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_063AD49AF1D35549B2A9F20F4AAFF0F2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5C80A91068BC57DAA17320A5B25B6FE6" xlink:to="loc_us-gaap_DebtInstrumentTable_063AD49AF1D35549B2A9F20F4AAFF0F2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_F210E8E97E265522B96C3A026EBF900A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_063AD49AF1D35549B2A9F20F4AAFF0F2" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_F210E8E97E265522B96C3A026EBF900A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_60376F38EC9A33535161C3D9BF26A1C4_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_F210E8E97E265522B96C3A026EBF900A" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_60376F38EC9A33535161C3D9BF26A1C4_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_3A2945B92A7D5554914CE5A971CA30B3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_F210E8E97E265522B96C3A026EBF900A" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_3A2945B92A7D5554914CE5A971CA30B3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SecuredDebtMember" xlink:label="loc_us-gaap_SecuredDebtMember_08D5BA208889570F888A634BCAF19C6C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_3A2945B92A7D5554914CE5A971CA30B3" xlink:to="loc_us-gaap_SecuredDebtMember_08D5BA208889570F888A634BCAF19C6C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_C94A93DC7BC456488CA657E6E6151095" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_063AD49AF1D35549B2A9F20F4AAFF0F2" xlink:to="loc_us-gaap_DebtInstrumentAxis_C94A93DC7BC456488CA657E6E6151095" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_4679D5F673C3D3D41312C3D9BF27076F_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_C94A93DC7BC456488CA657E6E6151095" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_4679D5F673C3D3D41312C3D9BF27076F_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_836A5AF91E1251698F68B05DCEC3128C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_C94A93DC7BC456488CA657E6E6151095" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_836A5AF91E1251698F68B05DCEC3128C" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_PassThroughCertificatesSeries20191Member" xlink:label="loc_dal_PassThroughCertificatesSeries20191Member_3325FDCCEE4F528DA68E7C61B13A4491" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_836A5AF91E1251698F68B05DCEC3128C" xlink:to="loc_dal_PassThroughCertificatesSeries20191Member_3325FDCCEE4F528DA68E7C61B13A4491" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_PassThroughCertificates20191ClassAAMember" xlink:label="loc_dal_PassThroughCertificates20191ClassAAMember_41C1B74A13285EF0B8D10A501B751B16" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dal_PassThroughCertificatesSeries20191Member_3325FDCCEE4F528DA68E7C61B13A4491" xlink:to="loc_dal_PassThroughCertificates20191ClassAAMember_41C1B74A13285EF0B8D10A501B751B16" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_PassThroughCertificates20191ClassAMember" xlink:label="loc_dal_PassThroughCertificates20191ClassAMember_58DB3B5279B85F2A894C8B3E31D5ABB6" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dal_PassThroughCertificatesSeries20191Member_3325FDCCEE4F528DA68E7C61B13A4491" xlink:to="loc_dal_PassThroughCertificates20191ClassAMember_58DB3B5279B85F2A894C8B3E31D5ABB6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_3A32B4692E915F59B548AEA211F4BFEB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5C80A91068BC57DAA17320A5B25B6FE6" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_3A32B4692E915F59B548AEA211F4BFEB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_746C16FB998256B5B30A1BFA39F82E33" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5C80A91068BC57DAA17320A5B25B6FE6" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_746C16FB998256B5B30A1BFA39F82E33" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_6E811EE9968D560AA38BE0E322E073C7" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5C80A91068BC57DAA17320A5B25B6FE6" xlink:to="loc_us-gaap_DebtInstrumentMaturityDate_6E811EE9968D560AA38BE0E322E073C7" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_NumberOfAircraftToSecureLoan" xlink:label="loc_dal_NumberOfAircraftToSecureLoan_529D11E7CDF753D7AD52BFEF1019E6AA" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_5C80A91068BC57DAA17320A5B25B6FE6" xlink:to="loc_dal_NumberOfAircraftToSecureLoan_529D11E7CDF753D7AD52BFEF1019E6AA" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/DebtAvailabilityUnderRevolvingCreditFacilitiesDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_044C4BF9374151D39B969A39D004CDE1" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_8CEB5782254E5CE0ADDBFDB8CEAA934E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_044C4BF9374151D39B969A39D004CDE1" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_8CEB5782254E5CE0ADDBFDB8CEAA934E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_6D6638C6AE5F505CAAF9BA0B12668A23" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_8CEB5782254E5CE0ADDBFDB8CEAA934E" xlink:to="loc_us-gaap_DebtInstrumentAxis_6D6638C6AE5F505CAAF9BA0B12668A23" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_954A791FF39970980834C3D9BEA8B1EE_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_6D6638C6AE5F505CAAF9BA0B12668A23" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_954A791FF39970980834C3D9BEA8B1EE_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_CECF2B0312465355B4B4D83363716C39" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_6D6638C6AE5F505CAAF9BA0B12668A23" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_CECF2B0312465355B4B4D83363716C39" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_RevolvingCreditFacility2018Member" xlink:label="loc_dal_RevolvingCreditFacility2018Member_03C8165DEBDE51B5A7B21580E9B69971" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_CECF2B0312465355B4B4D83363716C39" xlink:to="loc_dal_RevolvingCreditFacility2018Member_03C8165DEBDE51B5A7B21580E9B69971" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_BankRevolvingCreditFacilitiesMember" xlink:label="loc_dal_BankRevolvingCreditFacilitiesMember_3DB7C894717B5B8DBB08E3431304226D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_CECF2B0312465355B4B4D83363716C39" xlink:to="loc_dal_BankRevolvingCreditFacilitiesMember_3DB7C894717B5B8DBB08E3431304226D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_5A003867F94F514391B69ADBF95C7130" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_044C4BF9374151D39B969A39D004CDE1" xlink:to="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_5A003867F94F514391B69ADBF95C7130" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/DebtFairValueOfDebtDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/DebtNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_6BC5D04661C15346A3AFB9729C6FAE0E" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_607CB471A5D951BA980600EF8B228411" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_6BC5D04661C15346A3AFB9729C6FAE0E" xlink:to="loc_us-gaap_DebtInstrumentTable_607CB471A5D951BA980600EF8B228411" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_EF4EF60DECD25DB7B4FFBB8BDC715821" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_607CB471A5D951BA980600EF8B228411" xlink:to="loc_us-gaap_DebtInstrumentAxis_EF4EF60DECD25DB7B4FFBB8BDC715821" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_A5AECE6DBCC9CB252EC0C465C7853E28_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_EF4EF60DECD25DB7B4FFBB8BDC715821" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_A5AECE6DBCC9CB252EC0C465C7853E28_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_902209E5BF3250B3B5B85CBD9F631530" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_EF4EF60DECD25DB7B4FFBB8BDC715821" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_902209E5BF3250B3B5B85CBD9F631530" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_UnsecuredTermLoan2019Member" xlink:label="loc_dal_UnsecuredTermLoan2019Member_EF6D205114205E65A1BF00EE8EBFC5C3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_902209E5BF3250B3B5B85CBD9F631530" xlink:to="loc_dal_UnsecuredTermLoan2019Member_EF6D205114205E65A1BF00EE8EBFC5C3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_F434E5948C1D5458AB4EBFF051579667" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_607CB471A5D951BA980600EF8B228411" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_F434E5948C1D5458AB4EBFF051579667" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_82906D357B4BF432AC44C465C786A32F_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_F434E5948C1D5458AB4EBFF051579667" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_82906D357B4BF432AC44C465C786A32F_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_A965507B8FAB57688D329ECFD65A432B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_F434E5948C1D5458AB4EBFF051579667" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_A965507B8FAB57688D329ECFD65A432B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LoansPayableMember" xlink:label="loc_us-gaap_LoansPayableMember_7E069DECE81E595385AA5C2E7573D033" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_A965507B8FAB57688D329ECFD65A432B" xlink:to="loc_us-gaap_LoansPayableMember_7E069DECE81E595385AA5C2E7573D033" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_4BB62E85588F5965AE394DB98984ACD7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_6BC5D04661C15346A3AFB9729C6FAE0E" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_4BB62E85588F5965AE394DB98984ACD7" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_NumberOfLenders" xlink:label="loc_dal_NumberOfLenders_F9D053B0DF565CF683F5D70C9B51B9E0" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_6BC5D04661C15346A3AFB9729C6FAE0E" xlink:to="loc_dal_NumberOfLenders_F9D053B0DF565CF683F5D70C9B51B9E0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_52C587A1D2465A5FA774D9478791AB22" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_6BC5D04661C15346A3AFB9729C6FAE0E" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_52C587A1D2465A5FA774D9478791AB22" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/DebtSummaryOfDebtDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_37C4E08E86A47872669AB11E84932FF8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_DebtInstrumentTable_37C4E08E86A47872669AB11E84932FF8" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_2F60500FADF027C459C8B11E849352E4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_37C4E08E86A47872669AB11E84932FF8" xlink:to="loc_us-gaap_DebtInstrumentAxis_2F60500FADF027C459C8B11E849352E4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_2F60500FADF027C459C8B11E849352E4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_2F60500FADF027C459C8B11E849352E4" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_UnsecuredNotesMember" xlink:label="loc_dal_UnsecuredNotesMember_E89C2B819F53BF6C8E9DB11E8493C847" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0" xlink:to="loc_dal_UnsecuredNotesMember_E89C2B819F53BF6C8E9DB11E8493C847" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_CertificatesMember" xlink:label="loc_dal_CertificatesMember_CA1F5694BB75C83725D2B11E84930650" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0" xlink:to="loc_dal_CertificatesMember_CA1F5694BB75C83725D2B11E84930650" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_AircraftFinancingsMember" xlink:label="loc_dal_AircraftFinancingsMember_5788E799D198DAD85C47B11E8493496D" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0" xlink:to="loc_dal_AircraftFinancingsMember_5788E799D198DAD85C47B11E8493496D" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_NYTDCSpecialFacilitiesRevenueBondsSeries2018Member" xlink:label="loc_dal_NYTDCSpecialFacilitiesRevenueBondsSeries2018Member_F9391A9BBE679060F1F1B11E84934854" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0" xlink:to="loc_dal_NYTDCSpecialFacilitiesRevenueBondsSeries2018Member_F9391A9BBE679060F1F1B11E84934854" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_OtherFinancingsMember" xlink:label="loc_dal_OtherFinancingsMember_562AA9AEA7B63DBF4D25B11E84936AA3" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0" xlink:to="loc_dal_OtherFinancingsMember_562AA9AEA7B63DBF4D25B11E84936AA3" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_RevolvingCreditFacility2018Member" xlink:label="loc_dal_RevolvingCreditFacility2018Member_13E9ECB62A4E26988D6DB11E84930DCF" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0" xlink:to="loc_dal_RevolvingCreditFacility2018Member_13E9ECB62A4E26988D6DB11E84930DCF" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_BankRevolvingCreditFacilitiesMember" xlink:label="loc_dal_BankRevolvingCreditFacilitiesMember_8B6DC13B2D9E146ACA7DB11E8493AB2C" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_D58DDF11F9E899DCD14EB11E84932DD0" xlink:to="loc_dal_BankRevolvingCreditFacilitiesMember_8B6DC13B2D9E146ACA7DB11E8493AB2C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_81CB30D1FC60DCBB1E8DB11E8493FE6F" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_37C4E08E86A47872669AB11E84932FF8" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_81CB30D1FC60DCBB1E8DB11E8493FE6F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_9AF8A9D66D995706A1A3B11E84938ACA_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_81CB30D1FC60DCBB1E8DB11E8493FE6F" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_9AF8A9D66D995706A1A3B11E84938ACA_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_9AF8A9D66D995706A1A3B11E84938ACA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_81CB30D1FC60DCBB1E8DB11E8493FE6F" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_9AF8A9D66D995706A1A3B11E84938ACA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="loc_us-gaap_UnsecuredDebtMember_5CA02DB4E1E750EAA789B11E8493DA6E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9AF8A9D66D995706A1A3B11E84938ACA" xlink:to="loc_us-gaap_UnsecuredDebtMember_5CA02DB4E1E750EAA789B11E8493DA6E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SecuredDebtMember" xlink:label="loc_us-gaap_SecuredDebtMember_35E1A03A189EE3550A78B11E8493D94C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9AF8A9D66D995706A1A3B11E84938ACA" xlink:to="loc_us-gaap_SecuredDebtMember_35E1A03A189EE3550A78B11E8493D94C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BondsMember" xlink:label="loc_us-gaap_BondsMember_DCCEC5585DA311624C6AB11E849399E6" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9AF8A9D66D995706A1A3B11E84938ACA" xlink:to="loc_us-gaap_BondsMember_DCCEC5585DA311624C6AB11E849399E6" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_SecuredAndUnsecuredDebtMember" xlink:label="loc_dal_SecuredAndUnsecuredDebtMember_5E506C041DE416C0BE1DB11E84931194" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9AF8A9D66D995706A1A3B11E84938ACA" xlink:to="loc_dal_SecuredAndUnsecuredDebtMember_5E506C041DE416C0BE1DB11E84931194" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_1D7C466EAED225D85B20B11E8493744C" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_9AF8A9D66D995706A1A3B11E84938ACA" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_1D7C466EAED225D85B20B11E8493744C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_B1BB5A0AAFE54698A4F8B11E84931721" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_37C4E08E86A47872669AB11E84932FF8" xlink:to="loc_srt_RangeAxis_B1BB5A0AAFE54698A4F8B11E84931721" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_EBF0AFF907F099A5CAD3B11E84932752_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_B1BB5A0AAFE54698A4F8B11E84931721" xlink:to="loc_srt_RangeMember_EBF0AFF907F099A5CAD3B11E84932752_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_EBF0AFF907F099A5CAD3B11E84932752" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_B1BB5A0AAFE54698A4F8B11E84931721" xlink:to="loc_srt_RangeMember_EBF0AFF907F099A5CAD3B11E84932752" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_7545A2F227F0C0929D7BB11E8493DC3E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_EBF0AFF907F099A5CAD3B11E84932752" xlink:to="loc_srt_MinimumMember_7545A2F227F0C0929D7BB11E8493DC3E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_08ED3BF5E9369D4A9B53B11E849397A1" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_EBF0AFF907F099A5CAD3B11E84932752" xlink:to="loc_srt_MaximumMember_08ED3BF5E9369D4A9B53B11E849397A1" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:label="loc_us-gaap_DebtInstrumentMaturityDate_2FAA0D7876F93BA87737B11E84992AF6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_DebtInstrumentMaturityDate_2FAA0D7876F93BA87737B11E84992AF6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentMaturityDateRangeStart1" xlink:label="loc_us-gaap_DebtInstrumentMaturityDateRangeStart1_DA1DD72A49908B330227B11E849936CF" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_DebtInstrumentMaturityDateRangeStart1_DA1DD72A49908B330227B11E849936CF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentMaturityDateRangeEnd1" xlink:label="loc_us-gaap_DebtInstrumentMaturityDateRangeEnd1_B8057E1184F10521D43CB11E84992CD9" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_DebtInstrumentMaturityDateRangeEnd1_B8057E1184F10521D43CB11E84992CD9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3F8386B32492CEAF2601B11E8499E810" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3F8386B32492CEAF2601B11E8499E810" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_CF60261636AD16A445E2B11E8499CAED" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_CF60261636AD16A445E2B11E8499CAED" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_1D3BCAE6C60CA6E78DA3B11E8499E9BD" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_1D3BCAE6C60CA6E78DA3B11E8499E9BD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_B04A7940A06A737304D9B11E8499ED42" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_LongTermDebt_B04A7940A06A737304D9B11E8499ED42" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_8BF30ADACB61ED259DF9B11E8499DB08" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_LongTermDebtCurrent_8BF30ADACB61ED259DF9B11E8499DB08" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_0335535213D010F6C3ACB11E8499D8CE" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_62C7AFAD1FF5F827FFFEB11E8493180A" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_0335535213D010F6C3ACB11E8499D8CE" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/DebtTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/DerivativesAndRiskManagement" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/DerivativesAndRiskManagementBalanceSheetLocationOfHedgedItemDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="loc_us-gaap_DerivativeLineItems_D017CF232826594CA84EF10CAEDD847C" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeTable" xlink:label="loc_us-gaap_DerivativeTable_7B95760010B653D39D97EBA527BB5E7E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_D017CF232826594CA84EF10CAEDD847C" xlink:to="loc_us-gaap_DerivativeTable_7B95760010B653D39D97EBA527BB5E7E" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_35FF22AB856A5B2ABFB696010D4C2BA8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_7B95760010B653D39D97EBA527BB5E7E" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_35FF22AB856A5B2ABFB696010D4C2BA8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_3C62AD09E2C73EE2828AC3D9BEB28BD8_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_35FF22AB856A5B2ABFB696010D4C2BA8" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_3C62AD09E2C73EE2828AC3D9BEB28BD8_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_C8E3DA9416045B7CB82DE9E16D4A24CA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_35FF22AB856A5B2ABFB696010D4C2BA8" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_C8E3DA9416045B7CB82DE9E16D4A24CA" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_CurrentMaturitiesOfLongTermDebtAndFinanceLeasesMember" xlink:label="loc_dal_CurrentMaturitiesOfLongTermDebtAndFinanceLeasesMember_A016EB3429005D26B10CAA5F2D085EC8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_C8E3DA9416045B7CB82DE9E16D4A24CA" xlink:to="loc_dal_CurrentMaturitiesOfLongTermDebtAndFinanceLeasesMember_A016EB3429005D26B10CAA5F2D085EC8" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_LongTermDebtAndFinanceLeasesMember" xlink:label="loc_dal_LongTermDebtAndFinanceLeasesMember_F9E14A8E40D25DF4AAE5567AB718E775" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_C8E3DA9416045B7CB82DE9E16D4A24CA" xlink:to="loc_dal_LongTermDebtAndFinanceLeasesMember_F9E14A8E40D25DF4AAE5567AB718E775" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgedLiabilityFairValueHedge" xlink:label="loc_us-gaap_HedgedLiabilityFairValueHedge_30385A3B13165103B0D55ED578D96EB4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_D017CF232826594CA84EF10CAEDD847C" xlink:to="loc_us-gaap_HedgedLiabilityFairValueHedge_30385A3B13165103B0D55ED578D96EB4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgedLiabilityFairValueHedgeCumulativeIncreaseDecrease" xlink:label="loc_us-gaap_HedgedLiabilityFairValueHedgeCumulativeIncreaseDecrease_32FE5371AC1C57B88D8446160B3BE916" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_D017CF232826594CA84EF10CAEDD847C" xlink:to="loc_us-gaap_HedgedLiabilityFairValueHedgeCumulativeIncreaseDecrease_32FE5371AC1C57B88D8446160B3BE916" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/DerivativesAndRiskManagementHedgeGainsLossesDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_32FF4D167CAC19189532B11A6E81B50C" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9AEA00D40673495168D0B11A6E7A988B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_32FF4D167CAC19189532B11A6E81B50C" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9AEA00D40673495168D0B11A6E7A988B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_25FC285E65EFA4BFBCB6B11A6E7C75ED" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9AEA00D40673495168D0B11A6E7A988B" xlink:to="loc_us-gaap_HedgingDesignationAxis_25FC285E65EFA4BFBCB6B11A6E7C75ED" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_3A6A7DE7773F2088BC2DB11A6E7C9946_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_25FC285E65EFA4BFBCB6B11A6E7C75ED" xlink:to="loc_us-gaap_HedgingDesignationDomain_3A6A7DE7773F2088BC2DB11A6E7C9946_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_25FC285E65EFA4BFBCB6B11A6E7C75ED" xlink:to="loc_us-gaap_HedgingDesignationDomain_3A6A7DE7773F2088BC2DB11A6E7C9946" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_BA9D769926E834CDD529B11A6E7D1F2E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_3A6A7DE7773F2088BC2DB11A6E7C9946" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_BA9D769926E834CDD529B11A6E7D1F2E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_901ED0CB7DE1AAA6BBFDB11A6E7D7DDB" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_3A6A7DE7773F2088BC2DB11A6E7C9946" xlink:to="loc_us-gaap_NondesignatedMember_901ED0CB7DE1AAA6BBFDB11A6E7D7DDB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_4BA4D397733803490F7CB11A6E7BC7D0" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9AEA00D40673495168D0B11A6E7A988B" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_4BA4D397733803490F7CB11A6E7BC7D0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_3DE4021D3535DEBA46EEB11A6E7BE1A4_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_4BA4D397733803490F7CB11A6E7BC7D0" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_3DE4021D3535DEBA46EEB11A6E7BE1A4_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_4BA4D397733803490F7CB11A6E7BC7D0" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_3DE4021D3535DEBA46EEB11A6E7BE1A4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_1F72B26576B874C4AE88B11A6E7CDF83" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_3DE4021D3535DEBA46EEB11A6E7BE1A4" xlink:to="loc_us-gaap_ForeignExchangeContractMember_1F72B26576B874C4AE88B11A6E7CDF83" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EnergyRelatedDerivativeMember" xlink:label="loc_us-gaap_EnergyRelatedDerivativeMember_DA3AA6C867787DDEE0E6B11A6E7C9FBF" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_3DE4021D3535DEBA46EEB11A6E7BE1A4" xlink:to="loc_us-gaap_EnergyRelatedDerivativeMember_DA3AA6C867787DDEE0E6B11A6E7C9FBF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLocationAxis" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_2B583888DAB34AAFBF38B11A6E809B87" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9AEA00D40673495168D0B11A6E7A988B" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_2B583888DAB34AAFBF38B11A6E809B87" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLocationDomain" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_99F64F56BDA803DD2B4FB11A6E809250_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_2B583888DAB34AAFBF38B11A6E809B87" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_99F64F56BDA803DD2B4FB11A6E809250_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationAxis_2B583888DAB34AAFBF38B11A6E809B87" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_99F64F56BDA803DD2B4FB11A6E809250" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_OtherComprehensiveIncomeMember_7DC12888648CDC5C8E99B11A6E819607" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLocationDomain_99F64F56BDA803DD2B4FB11A6E809250" xlink:to="loc_us-gaap_OtherComprehensiveIncomeMember_7DC12888648CDC5C8E99B11A6E819607" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_E4FBBCEFAC436F399730B11A6E7D9F4C" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9AEA00D40673495168D0B11A6E7A988B" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_E4FBBCEFAC436F399730B11A6E7D9F4C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_10734F45D5B5BE605B88B11A6E7D4BE0_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_E4FBBCEFAC436F399730B11A6E7D9F4C" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_10734F45D5B5BE605B88B11A6E7D4BE0_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_E4FBBCEFAC436F399730B11A6E7D9F4C" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_10734F45D5B5BE605B88B11A6E7D4BE0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PassengerMember" xlink:label="loc_us-gaap_PassengerMember_60EF119A07FE32E0BBDDB11A6E7E05C9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_10734F45D5B5BE605B88B11A6E7D4BE0" xlink:to="loc_us-gaap_PassengerMember_60EF119A07FE32E0BBDDB11A6E7E05C9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnInvestmentsMember1" xlink:label="loc_us-gaap_GainLossOnInvestmentsMember1_C5D534920F62475E1E4AB11A6E7E84D3" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_10734F45D5B5BE605B88B11A6E7D4BE0" xlink:to="loc_us-gaap_GainLossOnInvestmentsMember1_C5D534920F62475E1E4AB11A6E7E84D3" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_AircraftFuelAndRelatedTaxesMember" xlink:label="loc_dal_AircraftFuelAndRelatedTaxesMember_B1110012EEF981DC1262B11A6E80FAA9" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_10734F45D5B5BE605B88B11A6E7D4BE0" xlink:to="loc_dal_AircraftFuelAndRelatedTaxesMember_B1110012EEF981DC1262B11A6E80FAA9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_24B2F6E7756DDFFC81DAB11A6E8113F8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_32FF4D167CAC19189532B11A6E81B50C" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_24B2F6E7756DDFFC81DAB11A6E8113F8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_1103F9549495AF2B2392B11A6E81593A" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_32FF4D167CAC19189532B11A6E81B50C" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_1103F9549495AF2B2392B11A6E81593A" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/DerivativesAndRiskManagementHedgePositionDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5226B85307CF98B49BEA8E3E1DAE559A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5226B85307CF98B49BEA8E3E1DAE559A" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_36EFB139FE91E3A066638E3E1DAEE939" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5226B85307CF98B49BEA8E3E1DAE559A" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_36EFB139FE91E3A066638E3E1DAEE939" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingRelationshipDomain" xlink:label="loc_us-gaap_HedgingRelationshipDomain_3939C7BF6226C4D59BC38E3E1DAF32A2_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_36EFB139FE91E3A066638E3E1DAEE939" xlink:to="loc_us-gaap_HedgingRelationshipDomain_3939C7BF6226C4D59BC38E3E1DAF32A2_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_36EFB139FE91E3A066638E3E1DAEE939" xlink:to="loc_us-gaap_HedgingRelationshipDomain_3939C7BF6226C4D59BC38E3E1DAF32A2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueHedgingMember" xlink:label="loc_us-gaap_FairValueHedgingMember_D4E63B02DC76BC2E943D8E3E1DAF9D1A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_3939C7BF6226C4D59BC38E3E1DAF32A2" xlink:to="loc_us-gaap_FairValueHedgingMember_D4E63B02DC76BC2E943D8E3E1DAF9D1A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashFlowHedgingMember" xlink:label="loc_us-gaap_CashFlowHedgingMember_0C103E937DB436096EEE8E3E1DAF2EA5" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_3939C7BF6226C4D59BC38E3E1DAF32A2" xlink:to="loc_us-gaap_CashFlowHedgingMember_0C103E937DB436096EEE8E3E1DAF2EA5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_843A23E6E11AD987DF7C8E3E1DAFCD7B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5226B85307CF98B49BEA8E3E1DAE559A" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_843A23E6E11AD987DF7C8E3E1DAFCD7B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_EDEDB8C869D04FB1BE7B8E3E1DB01000_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_843A23E6E11AD987DF7C8E3E1DAFCD7B" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_EDEDB8C869D04FB1BE7B8E3E1DB01000_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_EDEDB8C869D04FB1BE7B8E3E1DB01000" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_843A23E6E11AD987DF7C8E3E1DAFCD7B" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_EDEDB8C869D04FB1BE7B8E3E1DB01000" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember_9535108694FEB312C30D8E3E1DB07017" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_EDEDB8C869D04FB1BE7B8E3E1DB01000" xlink:to="loc_us-gaap_InterestRateSwapMember_9535108694FEB312C30D8E3E1DB07017" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_C7A509DBCE35B9A5DFE28E3E1DB0B491" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_EDEDB8C869D04FB1BE7B8E3E1DB01000" xlink:to="loc_us-gaap_ForeignExchangeContractMember_C7A509DBCE35B9A5DFE28E3E1DB0B491" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EnergyRelatedDerivativeMember" xlink:label="loc_us-gaap_EnergyRelatedDerivativeMember_CE04FE42AC0C70D7AD1D8E3E1DB036A4" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_EDEDB8C869D04FB1BE7B8E3E1DB01000" xlink:to="loc_us-gaap_EnergyRelatedDerivativeMember_CE04FE42AC0C70D7AD1D8E3E1DB036A4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_0B4D202409E6242DEE3E8E3E1DB0C3DE" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5226B85307CF98B49BEA8E3E1DAE559A" xlink:to="loc_us-gaap_HedgingDesignationAxis_0B4D202409E6242DEE3E8E3E1DB0C3DE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_7CB03F67E9ED8C461ECD8E3E1DB12490_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_0B4D202409E6242DEE3E8E3E1DB0C3DE" xlink:to="loc_us-gaap_HedgingDesignationDomain_7CB03F67E9ED8C461ECD8E3E1DB12490_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_7CB03F67E9ED8C461ECD8E3E1DB12490" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_0B4D202409E6242DEE3E8E3E1DB0C3DE" xlink:to="loc_us-gaap_HedgingDesignationDomain_7CB03F67E9ED8C461ECD8E3E1DB12490" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_D70E87ABD1B2C9B112A78E3E1DB1E7FF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_7CB03F67E9ED8C461ECD8E3E1DB12490" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_D70E87ABD1B2C9B112A78E3E1DB1E7FF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_76380E0DF38267F529388E3E1DB19B0E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_7CB03F67E9ED8C461ECD8E3E1DB12490" xlink:to="loc_us-gaap_NondesignatedMember_76380E0DF38267F529388E3E1DB19B0E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_791E9A6271250BEF21068E3E1DB19DB8" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_5226B85307CF98B49BEA8E3E1DAE559A" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_791E9A6271250BEF21068E3E1DB19DB8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_8A1ACF7C8EC31564B9B28E3E1DB2031B_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_791E9A6271250BEF21068E3E1DB19DB8" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_8A1ACF7C8EC31564B9B28E3E1DB2031B_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_8A1ACF7C8EC31564B9B28E3E1DB2031B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_791E9A6271250BEF21068E3E1DB19DB8" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_8A1ACF7C8EC31564B9B28E3E1DB2031B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentAssetsMember" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_BF94A9FD0C1954A379DB8E3E1DB259EF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_8A1ACF7C8EC31564B9B28E3E1DB2031B" xlink:to="loc_us-gaap_OtherCurrentAssetsMember_BF94A9FD0C1954A379DB8E3E1DB259EF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_B1041370D95A45B3B8258E3E1DB26BE4" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_8A1ACF7C8EC31564B9B28E3E1DB2031B" xlink:to="loc_us-gaap_OtherAssetsMember_B1041370D95A45B3B8258E3E1DB26BE4" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherCurrentLiabilitiesMember_37EC4B271B3FF3AB898E8E3E1DB201BB" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_8A1ACF7C8EC31564B9B28E3E1DB2031B" xlink:to="loc_us-gaap_OtherCurrentLiabilitiesMember_37EC4B271B3FF3AB898E8E3E1DB201BB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesMember" xlink:label="loc_us-gaap_OtherLiabilitiesMember_6BD5344B5C7FCD2FDFAE8E3E1DB21272" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_8A1ACF7C8EC31564B9B28E3E1DB2031B" xlink:to="loc_us-gaap_OtherLiabilitiesMember_6BD5344B5C7FCD2FDFAE8E3E1DB21272" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeNotionalAmount" xlink:label="loc_us-gaap_DerivativeNotionalAmount_5320059F0616694027218E3E1DB32C2B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_DerivativeNotionalAmount_5320059F0616694027218E3E1DB32C2B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeNonmonetaryNotionalAmount" xlink:label="loc_us-gaap_DerivativeNonmonetaryNotionalAmount_50B0D448379148420FC58E3E1DB389CC" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_DerivativeNonmonetaryNotionalAmount_50B0D448379148420FC58E3E1DB389CC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateFairValueHedgeAssetAtFairValue" xlink:label="loc_us-gaap_InterestRateFairValueHedgeAssetAtFairValue_3DB5B5B3B56BD348B6308E3E1DB3C16B" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_InterestRateFairValueHedgeAssetAtFairValue_3DB5B5B3B56BD348B6308E3E1DB3C16B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateFairValueHedgeLiabilityAtFairValue" xlink:label="loc_us-gaap_InterestRateFairValueHedgeLiabilityAtFairValue_C08EDD485D802AC04BB18E3E1DB3EFEC" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_InterestRateFairValueHedgeLiabilityAtFairValue_C08EDD485D802AC04BB18E3E1DB3EFEC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateFairValueHedgeDerivativeAtFairValueNet" xlink:label="loc_us-gaap_InterestRateFairValueHedgeDerivativeAtFairValueNet_397422FD39D798DF8EBD8E3E1DB41B33" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_InterestRateFairValueHedgeDerivativeAtFairValueNet_397422FD39D798DF8EBD8E3E1DB41B33" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyCashFlowHedgeAssetAtFairValue" xlink:label="loc_us-gaap_ForeignCurrencyCashFlowHedgeAssetAtFairValue_4F7D7199D74EF910C7B28E3E1DB4A489" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_ForeignCurrencyCashFlowHedgeAssetAtFairValue_4F7D7199D74EF910C7B28E3E1DB4A489" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyCashFlowHedgeLiabilityAtFairValue" xlink:label="loc_us-gaap_ForeignCurrencyCashFlowHedgeLiabilityAtFairValue_7A1BD2F557AEAF42F1668E3E1DB41EC6" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_ForeignCurrencyCashFlowHedgeLiabilityAtFairValue_7A1BD2F557AEAF42F1668E3E1DB41EC6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignCurrencyCashFlowHedgeDerivativeAtFairValueNet" xlink:label="loc_us-gaap_ForeignCurrencyCashFlowHedgeDerivativeAtFairValueNet_5C56AA8CB2D0B08ACEF48E3E1DB4C598" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_ForeignCurrencyCashFlowHedgeDerivativeAtFairValueNet_5C56AA8CB2D0B08ACEF48E3E1DB4C598" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PriceRiskDerivativeAssetsAtFairValue" xlink:label="loc_us-gaap_PriceRiskDerivativeAssetsAtFairValue_F711762C21F530BBFB9D8E3E1DB48417" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_PriceRiskDerivativeAssetsAtFairValue_F711762C21F530BBFB9D8E3E1DB48417" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PriceRiskDerivativeLiabilitiesAtFairValue" xlink:label="loc_us-gaap_PriceRiskDerivativeLiabilitiesAtFairValue_3FAB75F50498DAF27B8D8E3E1DB43859" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_PriceRiskDerivativeLiabilitiesAtFairValue_3FAB75F50498DAF27B8D8E3E1DB43859" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PriceRiskDerivativesAtFairValueNet" xlink:label="loc_us-gaap_PriceRiskDerivativesAtFairValueNet_600F474C17DFEBF70B958E3E1DB5A920" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_PriceRiskDerivativesAtFairValueNet_600F474C17DFEBF70B958E3E1DB5A920" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_CA27E433EB7FA1FA283C8E3E1DB5C781" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_CA27E433EB7FA1FA283C8E3E1DB5C781" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_E00D9258A54B24B467608E3E1DB5747C" xlink:type="locator"/>

<link:definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_E00D9258A54B24B467608E3E1DB5747C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeNet" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_5BF3C4EFAFDE472F8D298E3E1DB56EAB" xlink:type="locator"/>

<link:definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_479922B88842259D4DF78E3E1DB3AE0B" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeNet_5BF3C4EFAFDE472F8D298E3E1DB56EAB" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/DerivativesAndRiskManagementOffsettingAssetsAndLiabilitiesDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="loc_us-gaap_DerivativeLineItems_6CF1CBF69EEC5DA9AFDC593EC915B57A" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeTable" xlink:label="loc_us-gaap_DerivativeTable_4F8A6183C0645A80A047464A81A86D9A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_6CF1CBF69EEC5DA9AFDC593EC915B57A" xlink:to="loc_us-gaap_DerivativeTable_4F8A6183C0645A80A047464A81A86D9A" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_8CD6522E09F7526C97F3A556EAB0139C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_4F8A6183C0645A80A047464A81A86D9A" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_8CD6522E09F7526C97F3A556EAB0139C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_376D52BD92191467BF4AC3D9BF364CCF_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_8CD6522E09F7526C97F3A556EAB0139C" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_376D52BD92191467BF4AC3D9BF364CCF_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_46D77A5E03E9535485EF9FACA3AA8AE9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_8CD6522E09F7526C97F3A556EAB0139C" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_46D77A5E03E9535485EF9FACA3AA8AE9" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentAssetsMember" xlink:label="loc_us-gaap_OtherCurrentAssetsMember_910407084DFB54A6AA0CA3AE80D6B4BC" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_46D77A5E03E9535485EF9FACA3AA8AE9" xlink:to="loc_us-gaap_OtherCurrentAssetsMember_910407084DFB54A6AA0CA3AE80D6B4BC" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_F8D47723A0A95B17BFFF3730D6C8DCD6" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_46D77A5E03E9535485EF9FACA3AA8AE9" xlink:to="loc_us-gaap_OtherAssetsMember_F8D47723A0A95B17BFFF3730D6C8DCD6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherCurrentLiabilitiesMember" xlink:label="loc_us-gaap_OtherCurrentLiabilitiesMember_50401F0397405D6F8B75F975AE40B207" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_46D77A5E03E9535485EF9FACA3AA8AE9" xlink:to="loc_us-gaap_OtherCurrentLiabilitiesMember_50401F0397405D6F8B75F975AE40B207" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesMember" xlink:label="loc_us-gaap_OtherLiabilitiesMember_BF7C1C53E1A052759307D97C5106D485" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_46D77A5E03E9535485EF9FACA3AA8AE9" xlink:to="loc_us-gaap_OtherLiabilitiesMember_BF7C1C53E1A052759307D97C5106D485" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral_A1E11CBAD0295B52A3CE3C18E20D47F3" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_6CF1CBF69EEC5DA9AFDC593EC915B57A" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral_A1E11CBAD0295B52A3CE3C18E20D47F3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_D65D1F0F78545A8496128425463E8E2D" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_6CF1CBF69EEC5DA9AFDC593EC915B57A" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_D65D1F0F78545A8496128425463E8E2D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeNet" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeNet_ED89BF26A10F5B0F9E0A023CE06FFB36" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_6CF1CBF69EEC5DA9AFDC593EC915B57A" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeNet_ED89BF26A10F5B0F9E0A023CE06FFB36" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/DerivativesAndRiskManagementTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/EarningsPerShare" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/EarningsPerShareScheduleOfComputationForEarningsPerShareTypesDetails" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/EarningsPerShareTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/EmployeeBenefitPlans" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/EmployeeBenefitPlansComponentsOfNetBenefitCostDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7A01122FA278592381A45D45A75CFBA6" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_EBF9567C424155A085949BF9BBE23DDF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7A01122FA278592381A45D45A75CFBA6" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_EBF9567C424155A085949BF9BBE23DDF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_87B06D91C3AF5EC79E1F605628CC96BB" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_EBF9567C424155A085949BF9BBE23DDF" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_87B06D91C3AF5EC79E1F605628CC96BB" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_5C694E08EF0A08A69CF9C3D9BEC3DB47_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_87B06D91C3AF5EC79E1F605628CC96BB" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_5C694E08EF0A08A69CF9C3D9BEC3DB47_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_FB4EDC7BE07C57D8865D884E7C05BAE0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_87B06D91C3AF5EC79E1F605628CC96BB" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_FB4EDC7BE07C57D8865D884E7C05BAE0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_57AB4549B5895AF3B18024DD8CAA9769" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_FB4EDC7BE07C57D8865D884E7C05BAE0" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_57AB4549B5895AF3B18024DD8CAA9769" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_898C6F6C96015322A3B68FA33E871532" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_FB4EDC7BE07C57D8865D884E7C05BAE0" xlink:to="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_898C6F6C96015322A3B68FA33E871532" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_BD558DF91FBE58BEB37AE721D1665E7F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7A01122FA278592381A45D45A75CFBA6" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_BD558DF91FBE58BEB37AE721D1665E7F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_21DDAD29DE97504A8F5242BDC0526C60" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7A01122FA278592381A45D45A75CFBA6" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_21DDAD29DE97504A8F5242BDC0526C60" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_AB354E59BF2C5F678D307524B41B5DB8" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7A01122FA278592381A45D45A75CFBA6" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_AB354E59BF2C5F678D307524B41B5DB8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_344C6DEAB3B35DFCA54A6A1900078075" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7A01122FA278592381A45D45A75CFBA6" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_344C6DEAB3B35DFCA54A6A1900078075" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_9FDCCCF8D34E5B8FA16E1C8C2B6B0D38" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7A01122FA278592381A45D45A75CFBA6" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLossImmediateRecognitionAsComponentInNetPeriodicBenefitCostCredit_9FDCCCF8D34E5B8FA16E1C8C2B6B0D38" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_C5C8B34D59C059D2951DAE20A5354123" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7A01122FA278592381A45D45A75CFBA6" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_C5C8B34D59C059D2951DAE20A5354123" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_83BFC94BD92B5095BD3A0ECD9EB15DE2" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_7A01122FA278592381A45D45A75CFBA6" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_83BFC94BD92B5095BD3A0ECD9EB15DE2" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/EmployeeBenefitPlansTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/FairValueMeasurements" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/FairValueMeasurementsScheduleOfFairValueMeasurementsOnRecurringBasisDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_C86C6938AFCC5BA7B1C481012CDBED3E" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_411C42A68EAC55A9957025BD19644E67" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_C86C6938AFCC5BA7B1C481012CDBED3E" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_411C42A68EAC55A9957025BD19644E67" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_F28B3EE37A3C5DBB98A7DE5564F089C8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_411C42A68EAC55A9957025BD19644E67" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_F28B3EE37A3C5DBB98A7DE5564F089C8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_4850084ABC7E025F3176C3D9BE9E93D9_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_F28B3EE37A3C5DBB98A7DE5564F089C8" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_4850084ABC7E025F3176C3D9BE9E93D9_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_9D6ECBD0E4CE54529DB16F8B59534B4F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_F28B3EE37A3C5DBB98A7DE5564F089C8" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_9D6ECBD0E4CE54529DB16F8B59534B4F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_6BE1E755C8BD5467BA63789427FB2FFD" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_9D6ECBD0E4CE54529DB16F8B59534B4F" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_6BE1E755C8BD5467BA63789427FB2FFD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_FEEA7F1382AA5EC5BD08A50AB059A080" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_411C42A68EAC55A9957025BD19644E67" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_FEEA7F1382AA5EC5BD08A50AB059A080" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_15444DA1E87836F128A4C3D9BE9F412E_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_FEEA7F1382AA5EC5BD08A50AB059A080" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_15444DA1E87836F128A4C3D9BE9F412E_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_640E3974913A5DD2A6932BE9E897A6EA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_FEEA7F1382AA5EC5BD08A50AB059A080" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_640E3974913A5DD2A6932BE9E897A6EA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_86170CCEADCB57EF9406A02640D46B49" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_640E3974913A5DD2A6932BE9E897A6EA" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_86170CCEADCB57EF9406A02640D46B49" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_3F8069CF67055B91B3E7B0ACCC7DEA31" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_640E3974913A5DD2A6932BE9E897A6EA" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_3F8069CF67055B91B3E7B0ACCC7DEA31" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="loc_us-gaap_FinancialInstrumentAxis_1CEE9AE5D6465022851A934728D8B3CD" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_411C42A68EAC55A9957025BD19644E67" xlink:to="loc_us-gaap_FinancialInstrumentAxis_1CEE9AE5D6465022851A934728D8B3CD" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6DB34169C982E0E51896C3D9BEA01B0D_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_1CEE9AE5D6465022851A934728D8B3CD" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_6DB34169C982E0E51896C3D9BEA01B0D_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_C26ADF6920EB5AA39251A36378EC0496" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_1CEE9AE5D6465022851A934728D8B3CD" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_C26ADF6920EB5AA39251A36378EC0496" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_USTreasuryAndGovernmentMember" xlink:label="loc_us-gaap_USTreasuryAndGovernmentMember_603B2DEE2C0E52D19A514F65F3A7B863" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_C26ADF6920EB5AA39251A36378EC0496" xlink:to="loc_us-gaap_USTreasuryAndGovernmentMember_603B2DEE2C0E52D19A514F65F3A7B863" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetBackedSecuritiesMember" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_8A7A17FB9AA756AEBD03881DBD84DE05" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_C26ADF6920EB5AA39251A36378EC0496" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_8A7A17FB9AA756AEBD03881DBD84DE05" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_3CCB97488E23550FB17A568D3263BD2D" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_C26ADF6920EB5AA39251A36378EC0496" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_3CCB97488E23550FB17A568D3263BD2D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherDebtSecuritiesMember" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_3D288D22E80454D6834297360989BF81" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_C26ADF6920EB5AA39251A36378EC0496" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_3D288D22E80454D6834297360989BF81" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EnergyRelatedDerivativeMember" xlink:label="loc_us-gaap_EnergyRelatedDerivativeMember_66583350E2205746B0D8DC97C56F6F5F" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_C26ADF6920EB5AA39251A36378EC0496" xlink:to="loc_us-gaap_EnergyRelatedDerivativeMember_66583350E2205746B0D8DC97C56F6F5F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:label="loc_us-gaap_InterestRateSwapMember_85FBC53115315CF286184707F289AD51" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_C26ADF6920EB5AA39251A36378EC0496" xlink:to="loc_us-gaap_InterestRateSwapMember_85FBC53115315CF286184707F289AD51" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_A9F68B02DBDD5ECDB9EAF2425248D869" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_C26ADF6920EB5AA39251A36378EC0496" xlink:to="loc_us-gaap_ForeignExchangeContractMember_A9F68B02DBDD5ECDB9EAF2425248D869" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FairValueNetAssetLiabilityAbstract" xlink:label="loc_us-gaap_FairValueNetAssetLiabilityAbstract_30BE23060D495A4381338B14D5DAE751" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_C86C6938AFCC5BA7B1C481012CDBED3E" xlink:to="loc_us-gaap_FairValueNetAssetLiabilityAbstract_30BE23060D495A4381338B14D5DAE751" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_82D3C385BFC258A2A672D7A6E6511157" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueNetAssetLiabilityAbstract_30BE23060D495A4381338B14D5DAE751" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_82D3C385BFC258A2A672D7A6E6511157" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedInvestmentsAtFairValue" xlink:label="loc_us-gaap_RestrictedInvestmentsAtFairValue_5965395F5C3E508F985371083A19941C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueNetAssetLiabilityAbstract_30BE23060D495A4381338B14D5DAE751" xlink:to="loc_us-gaap_RestrictedInvestmentsAtFairValue_5965395F5C3E508F985371083A19941C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_69BFAE8653845E9095B7C1134B86FEBE" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueNetAssetLiabilityAbstract_30BE23060D495A4381338B14D5DAE751" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_69BFAE8653845E9095B7C1134B86FEBE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesFvNi" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_156158CE7E5F5394B44E84EF89DBA944" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueNetAssetLiabilityAbstract_30BE23060D495A4381338B14D5DAE751" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_156158CE7E5F5394B44E84EF89DBA944" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet" xlink:label="loc_us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet_C403776E4D6F58398BE6A2EA91493C5E" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueNetAssetLiabilityAbstract_30BE23060D495A4381338B14D5DAE751" xlink:to="loc_us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet_C403776E4D6F58398BE6A2EA91493C5E" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/FairValueMeasurementsTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/Investments" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/InvestmentsNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_712E63BC1AE631E5A955B264352C8EF2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_712E63BC1AE631E5A955B264352C8EF2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsByNatureAxis" xlink:label="loc_us-gaap_GuaranteeObligationsByNatureAxis_77E4325AFAF686AC9EF0B26435330CE2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_712E63BC1AE631E5A955B264352C8EF2" xlink:to="loc_us-gaap_GuaranteeObligationsByNatureAxis_77E4325AFAF686AC9EF0B26435330CE2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GuaranteeObligationsNatureDomain" xlink:label="loc_us-gaap_GuaranteeObligationsNatureDomain_9FC97114C71C5661915CB26435336ACF_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_77E4325AFAF686AC9EF0B26435330CE2" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_9FC97114C71C5661915CB26435336ACF_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GuaranteeObligationsByNatureAxis_77E4325AFAF686AC9EF0B26435330CE2" xlink:to="loc_us-gaap_GuaranteeObligationsNatureDomain_9FC97114C71C5661915CB26435336ACF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialGuaranteeMember" xlink:label="loc_us-gaap_FinancialGuaranteeMember_FC103E6D805E7C73A4F4B26435332017" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GuaranteeObligationsNatureDomain_9FC97114C71C5661915CB26435336ACF" xlink:to="loc_us-gaap_FinancialGuaranteeMember_FC103E6D805E7C73A4F4B26435332017" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipAxis" xlink:label="loc_srt_OwnershipAxis_77950CE93025C9A4A2C1B26435346638" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_712E63BC1AE631E5A955B264352C8EF2" xlink:to="loc_srt_OwnershipAxis_77950CE93025C9A4A2C1B26435346638" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain" xlink:label="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_77950CE93025C9A4A2C1B26435346638" xlink:to="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_OwnershipDomain" xlink:label="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_77950CE93025C9A4A2C1B26435346638" xlink:to="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_AirFranceKLMMember" xlink:label="loc_dal_AirFranceKLMMember_3D67A2D4B956D8AD800FB26435345468" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E" xlink:to="loc_dal_AirFranceKLMMember_3D67A2D4B956D8AD800FB26435345468" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_GOLMember" xlink:label="loc_dal_GOLMember_BB1F026BDBFF5FD17D1DB2643534B955" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E" xlink:to="loc_dal_GOLMember_BB1F026BDBFF5FD17D1DB2643534B955" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ChinaEasternMember" xlink:label="loc_dal_ChinaEasternMember_5EFED442EA91A00B5724B2643536DF32" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E" xlink:to="loc_dal_ChinaEasternMember_5EFED442EA91A00B5724B2643536DF32" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_HanjinKALMember" xlink:label="loc_dal_HanjinKALMember_D3562D8BE57275C6F711B26435366A24" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E" xlink:to="loc_dal_HanjinKALMember_D3562D8BE57275C6F711B26435366A24" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_AlclearHoldingsLLCMember" xlink:label="loc_dal_AlclearHoldingsLLCMember_032DDE3ABDA598C11774B2643536A38E" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E" xlink:to="loc_dal_AlclearHoldingsLLCMember_032DDE3ABDA598C11774B2643536A38E" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_RepublicAirwaysMember" xlink:label="loc_dal_RepublicAirwaysMember_5714F6B0BD83A95552CBB2643536166F" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_815DF36153A7FCC5CF59B26435347B5E" xlink:to="loc_dal_RepublicAirwaysMember_5714F6B0BD83A95552CBB2643536166F" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_C57441C7507745B76312B264353627D5" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_712E63BC1AE631E5A955B264352C8EF2" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_C57441C7507745B76312B264353627D5" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_DA23A247F718D125E54BB2643536C398_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_C57441C7507745B76312B264353627D5" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_DA23A247F718D125E54BB2643536C398_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_C57441C7507745B76312B264353627D5" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_DA23A247F718D125E54BB2643536C398" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_GrupoAeromexicoMember" xlink:label="loc_dal_GrupoAeromexicoMember_9B7BA60C9AF4FD7FB23EB26435377F9F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_DA23A247F718D125E54BB2643536C398" xlink:to="loc_dal_GrupoAeromexicoMember_9B7BA60C9AF4FD7FB23EB26435377F9F" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_VirginAtlanticMember" xlink:label="loc_dal_VirginAtlanticMember_8FE110BEB073D09AF15AB2643537D907" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_DA23A247F718D125E54BB2643536C398" xlink:to="loc_dal_VirginAtlanticMember_8FE110BEB073D09AF15AB2643537D907" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_AirCoAviationServicesMember" xlink:label="loc_dal_AirCoAviationServicesMember_EDC101341EE7A11F45E8B2643537AD4E" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_DA23A247F718D125E54BB2643536C398" xlink:to="loc_dal_AirCoAviationServicesMember_EDC101341EE7A11F45E8B2643537AD4E" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_LATAMAirlinesGroupS.A.Member" xlink:label="loc_dal_LATAMAirlinesGroupS.A.Member_27AF806490E776DE57E2B264353722D8" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_DA23A247F718D125E54BB2643536C398" xlink:to="loc_dal_LATAMAirlinesGroupS.A.Member_27AF806490E776DE57E2B264353722D8" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_6F6625562DAF4C5A3DE4B26435371A6C" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_712E63BC1AE631E5A955B264352C8EF2" xlink:to="loc_us-gaap_CreditFacilityAxis_6F6625562DAF4C5A3DE4B26435371A6C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_319C95382FEC592E4A0CB26435383EA7_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_6F6625562DAF4C5A3DE4B26435371A6C" xlink:to="loc_us-gaap_CreditFacilityDomain_319C95382FEC592E4A0CB26435383EA7_default" xlink:type="arc"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_6F6625562DAF4C5A3DE4B26435371A6C" xlink:to="loc_us-gaap_CreditFacilityDomain_319C95382FEC592E4A0CB26435383EA7" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_TermLoanFacilityMember" xlink:label="loc_dal_TermLoanFacilityMember_3AA470C9F0297E008DB2B2643538368A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_319C95382FEC592E4A0CB26435383EA7" xlink:to="loc_dal_TermLoanFacilityMember_3AA470C9F0297E008DB2B2643538368A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:label="loc_us-gaap_FinancialInstrumentAxis_9F0EEB8E0ECB17BBB12DB2643538C347" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_712E63BC1AE631E5A955B264352C8EF2" xlink:to="loc_us-gaap_FinancialInstrumentAxis_9F0EEB8E0ECB17BBB12DB2643538C347" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_771FCB2430DB1ABAAF74B2643538FB16_default" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_9F0EEB8E0ECB17BBB12DB2643538C347" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_771FCB2430DB1ABAAF74B2643538FB16_default" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_771FCB2430DB1ABAAF74B2643538FB16" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_9F0EEB8E0ECB17BBB12DB2643538C347" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_771FCB2430DB1ABAAF74B2643538FB16" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_E5E4EB636C0D00702402B26435394FD0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_771FCB2430DB1ABAAF74B2643538FB16" xlink:to="loc_us-gaap_CommonStockMember_E5E4EB636C0D00702402B26435394FD0" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockMember" xlink:label="loc_us-gaap_PreferredStockMember_D3470594C9BF1042B577B2643539A85E" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_771FCB2430DB1ABAAF74B2643538FB16" xlink:to="loc_us-gaap_PreferredStockMember_D3470594C9BF1042B577B2643539A85E" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_EquityMethodInvestmentVotingInterestPercentageMaximumPerBylaws" xlink:label="loc_dal_EquityMethodInvestmentVotingInterestPercentageMaximumPerBylaws_0BE0DCB520EF4C11F7D9B2643539F860" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_dal_EquityMethodInvestmentVotingInterestPercentageMaximumPerBylaws_0BE0DCB520EF4C11F7D9B2643539F860" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_F438C0A9EC1DBD8685D2B2643539C607" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_F438C0A9EC1DBD8685D2B2643539C607" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_C56AB64D3D433701AF17B264353988B5" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_us-gaap_EquityMethodInvestments_C56AB64D3D433701AF17B264353988B5" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_StrategicAlliancePlanExpectedInvestmentOwnershipSubjectToRegulatoryApprovalPercentage" xlink:label="loc_dal_StrategicAlliancePlanExpectedInvestmentOwnershipSubjectToRegulatoryApprovalPercentage_BA32E57ECAA4900F0049B2643539B669" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_dal_StrategicAlliancePlanExpectedInvestmentOwnershipSubjectToRegulatoryApprovalPercentage_BA32E57ECAA4900F0049B2643539B669" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_StrategicAlliancePlanTenderOfferForAcquisitionPerShare" xlink:label="loc_dal_StrategicAlliancePlanTenderOfferForAcquisitionPerShare_E335982C49CA3C648B3CB264353AA32F" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_dal_StrategicAlliancePlanTenderOfferForAcquisitionPerShare_E335982C49CA3C648B3CB264353AA32F" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_StrategicAlliancePlanAmountToBeInvestedToSupportEstablishmentOfAlliance" xlink:label="loc_dal_StrategicAlliancePlanAmountToBeInvestedToSupportEstablishmentOfAlliance_7CCEC1EAC8B4C19B6097B264353A01B0" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_dal_StrategicAlliancePlanAmountToBeInvestedToSupportEstablishmentOfAlliance_7CCEC1EAC8B4C19B6097B264353A01B0" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_PaymentsToSupportEstablishmentOfStrategicAlliance" xlink:label="loc_dal_PaymentsToSupportEstablishmentOfStrategicAlliance_C7F4093C20E7E92726B3B264353AA18C" xlink:type="locator"/>

<link:definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_dal_PaymentsToSupportEstablishmentOfStrategicAlliance_C7F4093C20E7E92726B3B264353AA18C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnInvestments" xlink:label="loc_us-gaap_GainLossOnInvestments_B3AE9CA69BA626A1411DB264353A5E97" xlink:type="locator"/>

<link:definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_us-gaap_GainLossOnInvestments_B3AE9CA69BA626A1411DB264353A5E97" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_9D78508DD50404B887DDB264353A73B3" xlink:type="locator"/>

<link:definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_9D78508DD50404B887DDB264353A73B3" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquitySecuritiesFvNi" xlink:label="loc_us-gaap_EquitySecuritiesFvNi_DAE8A7CDCCFD6B2BCD50B264353A3ABF" xlink:type="locator"/>

<link:definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_us-gaap_EquitySecuritiesFvNi_DAE8A7CDCCFD6B2BCD50B264353A3ABF" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_DebtInstrumentGuaranteeBorrowingsOnThirdPartyDebt" xlink:label="loc_dal_DebtInstrumentGuaranteeBorrowingsOnThirdPartyDebt_34E9279BC7D76A490BECB264353A5FE4" xlink:type="locator"/>

<link:definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_dal_DebtInstrumentGuaranteeBorrowingsOnThirdPartyDebt_34E9279BC7D76A490BECB264353A5FE4" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_DebtInstrumentGuaranteeBorrowingsOnThirdPartyDebtTerm" xlink:label="loc_dal_DebtInstrumentGuaranteeBorrowingsOnThirdPartyDebtTerm_EC2CC7B81391A1152497B264353B148C" xlink:type="locator"/>

<link:definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_614268902B14C81C98D5B26435394619" xlink:to="loc_dal_DebtInstrumentGuaranteeBorrowingsOnThirdPartyDebtTerm_EC2CC7B81391A1152497B264353B148C" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/RevenueRecognition" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/RevenueRecognitionLoyaltyProgramLiabilityDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_B5D7851061475B87B416BCEA4BFD7219" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_127414AA765E5FBB9DEA0B2FCDA93CBE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_B5D7851061475B87B416BCEA4BFD7219" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_127414AA765E5FBB9DEA0B2FCDA93CBE" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_7840986425885FE7916AD638A189C997" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_127414AA765E5FBB9DEA0B2FCDA93CBE" xlink:to="loc_srt_ProductOrServiceAxis_7840986425885FE7916AD638A189C997" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_04EBFE9A926D20D7B0C3C3D9BEE8B67E_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_7840986425885FE7916AD638A189C997" xlink:to="loc_srt_ProductsAndServicesDomain_04EBFE9A926D20D7B0C3C3D9BEE8B67E_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_69B9897334945CB78ABFCB14B1B848F8" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_7840986425885FE7916AD638A189C997" xlink:to="loc_srt_ProductsAndServicesDomain_69B9897334945CB78ABFCB14B1B848F8" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ProductAndServiceOtherLoyaltyProgramMember" xlink:label="loc_dal_ProductAndServiceOtherLoyaltyProgramMember_7679EE73BB965B6C9BF283AD02B659EA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_69B9897334945CB78ABFCB14B1B848F8" xlink:to="loc_dal_ProductAndServiceOtherLoyaltyProgramMember_7679EE73BB965B6C9BF283AD02B659EA" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_FrequentFlyerLiabilityActivityRollForward" xlink:label="loc_dal_FrequentFlyerLiabilityActivityRollForward_415405B72D0656249385A270C3AA8349" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_B5D7851061475B87B416BCEA4BFD7219" xlink:to="loc_dal_FrequentFlyerLiabilityActivityRollForward_415405B72D0656249385A270C3AA8349" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:label="loc_us-gaap_ContractWithCustomerLiability_8E827A5C0C245EEBAFC5F8D03D3C1D53" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dal_FrequentFlyerLiabilityActivityRollForward_415405B72D0656249385A270C3AA8349" xlink:to="loc_us-gaap_ContractWithCustomerLiability_8E827A5C0C245EEBAFC5F8D03D3C1D53" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_LoyaltyProgramLiabilityMileageCreditsEarned" xlink:label="loc_dal_LoyaltyProgramLiabilityMileageCreditsEarned_DF3B59237F1C5E1B83AEB19CCFA7B5C9" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dal_FrequentFlyerLiabilityActivityRollForward_415405B72D0656249385A270C3AA8349" xlink:to="loc_dal_LoyaltyProgramLiabilityMileageCreditsEarned_DF3B59237F1C5E1B83AEB19CCFA7B5C9" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_LoyaltyProgramLiabilityTravelMileageCreditsRedeemed" xlink:label="loc_dal_LoyaltyProgramLiabilityTravelMileageCreditsRedeemed_04F2333496825C4EBB34A6151197D74B" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dal_FrequentFlyerLiabilityActivityRollForward_415405B72D0656249385A270C3AA8349" xlink:to="loc_dal_LoyaltyProgramLiabilityTravelMileageCreditsRedeemed_04F2333496825C4EBB34A6151197D74B" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_LoyaltyProgramLiabilityNonTravelMileageCreditsRedeemed" xlink:label="loc_dal_LoyaltyProgramLiabilityNonTravelMileageCreditsRedeemed_2AF9C545226953528A935EFF35F2A753" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dal_FrequentFlyerLiabilityActivityRollForward_415405B72D0656249385A270C3AA8349" xlink:to="loc_dal_LoyaltyProgramLiabilityNonTravelMileageCreditsRedeemed_2AF9C545226953528A935EFF35F2A753" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/RevenueRecognitionNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_92F2F77528685A9F804013053697DB96" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_D55F52784C9F51ECA63BEF2F2C77C036" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_92F2F77528685A9F804013053697DB96" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_D55F52784C9F51ECA63BEF2F2C77C036" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_63C0090CABC854CF8ABCF6AEE8A36033" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_D55F52784C9F51ECA63BEF2F2C77C036" xlink:to="loc_srt_ProductOrServiceAxis_63C0090CABC854CF8ABCF6AEE8A36033" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_F97D000EA51C15C2DC3ECDFD96053E29_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_63C0090CABC854CF8ABCF6AEE8A36033" xlink:to="loc_srt_ProductsAndServicesDomain_F97D000EA51C15C2DC3ECDFD96053E29_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_2F4F561F217A5DFD8BC2738CDF88323A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_63C0090CABC854CF8ABCF6AEE8A36033" xlink:to="loc_srt_ProductsAndServicesDomain_2F4F561F217A5DFD8BC2738CDF88323A" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_PassengerAirTrafficMember" xlink:label="loc_dal_PassengerAirTrafficMember_425CF5F816315FFAB7892A7E802323EA" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_2F4F561F217A5DFD8BC2738CDF88323A" xlink:to="loc_dal_PassengerAirTrafficMember_425CF5F816315FFAB7892A7E802323EA" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_345D200332EC5BDBBE8E7807BF76429C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_92F2F77528685A9F804013053697DB96" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_345D200332EC5BDBBE8E7807BF76429C" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_SalesOfMileageCredits" xlink:label="loc_dal_SalesOfMileageCredits_28FBAA43E3165DF2BB4406709CA9B96B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_92F2F77528685A9F804013053697DB96" xlink:to="loc_dal_SalesOfMileageCredits_28FBAA43E3165DF2BB4406709CA9B96B" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_MileageCreditRedemptionMajorityOfNewMilesRedemptionPeriod" xlink:label="loc_dal_MileageCreditRedemptionMajorityOfNewMilesRedemptionPeriod_94F16F183C8257B8AC59711E48DB4BF8" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_92F2F77528685A9F804013053697DB96" xlink:to="loc_dal_MileageCreditRedemptionMajorityOfNewMilesRedemptionPeriod_94F16F183C8257B8AC59711E48DB4BF8" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/RevenueRecognitionOtherRevenueDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_6DB641B9982C5D78AD4977A081527833" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_2023679657B6562AA1311DD1C522F268" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_6DB641B9982C5D78AD4977A081527833" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_2023679657B6562AA1311DD1C522F268" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_EE838ED5959754EBB71CEA01DC78D6E7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_2023679657B6562AA1311DD1C522F268" xlink:to="loc_srt_ProductOrServiceAxis_EE838ED5959754EBB71CEA01DC78D6E7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_D54D2B2CB75A4DAE4274C3D9BE01DBCC_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_EE838ED5959754EBB71CEA01DC78D6E7" xlink:to="loc_srt_ProductsAndServicesDomain_D54D2B2CB75A4DAE4274C3D9BE01DBCC_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_25298E4B0EC8584F8CFD58BB678CD7E7" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_EE838ED5959754EBB71CEA01DC78D6E7" xlink:to="loc_srt_ProductsAndServicesDomain_25298E4B0EC8584F8CFD58BB678CD7E7" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductAndServiceOtherMember" xlink:label="loc_us-gaap_ProductAndServiceOtherMember_37E2331F3E3D5583B69A4CAB8A3EA5FF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_25298E4B0EC8584F8CFD58BB678CD7E7" xlink:to="loc_us-gaap_ProductAndServiceOtherMember_37E2331F3E3D5583B69A4CAB8A3EA5FF" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ProductAndServiceOtherLoyaltyProgramMember" xlink:label="loc_dal_ProductAndServiceOtherLoyaltyProgramMember_897BD022AFC05711A1218BA55A026CD2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductAndServiceOtherMember_37E2331F3E3D5583B69A4CAB8A3EA5FF" xlink:to="loc_dal_ProductAndServiceOtherLoyaltyProgramMember_897BD022AFC05711A1218BA55A026CD2" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ProductAndServiceOtherAncillaryBusinessesAndRefineryMember" xlink:label="loc_dal_ProductAndServiceOtherAncillaryBusinessesAndRefineryMember_A144BD2B0BEF5F2DAABD8AF9A6D27D77" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductAndServiceOtherMember_37E2331F3E3D5583B69A4CAB8A3EA5FF" xlink:to="loc_dal_ProductAndServiceOtherAncillaryBusinessesAndRefineryMember_A144BD2B0BEF5F2DAABD8AF9A6D27D77" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ProductAndServiceOtherMiscellaneousMember" xlink:label="loc_dal_ProductAndServiceOtherMiscellaneousMember_9834CB511FDB51EF928CE795BAA5C28D" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ProductAndServiceOtherMember_37E2331F3E3D5583B69A4CAB8A3EA5FF" xlink:to="loc_dal_ProductAndServiceOtherMiscellaneousMember_9834CB511FDB51EF928CE795BAA5C28D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_645B818A54E55870B22E56209AA4E58D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_6DB641B9982C5D78AD4977A081527833" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_645B818A54E55870B22E56209AA4E58D" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/RevenueRecognitionPassengerRevenueDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_D82869DBC47159E0A32132026C353AE1" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_D2221992627A58119FABEAABB41A3F4D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_D82869DBC47159E0A32132026C353AE1" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_D2221992627A58119FABEAABB41A3F4D" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_BE2D04E0915155158733F5FE6BD73BE6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_D2221992627A58119FABEAABB41A3F4D" xlink:to="loc_srt_ProductOrServiceAxis_BE2D04E0915155158733F5FE6BD73BE6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_51500C73D354C375FBD2C3D9BF191AD2_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_BE2D04E0915155158733F5FE6BD73BE6" xlink:to="loc_srt_ProductsAndServicesDomain_51500C73D354C375FBD2C3D9BF191AD2_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_0D2A9349CA9E55C187B7DA641284380C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_BE2D04E0915155158733F5FE6BD73BE6" xlink:to="loc_srt_ProductsAndServicesDomain_0D2A9349CA9E55C187B7DA641284380C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PassengerMember" xlink:label="loc_us-gaap_PassengerMember_688CFD70F4F15D959AA2850D7D7D2CE0" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0D2A9349CA9E55C187B7DA641284380C" xlink:to="loc_us-gaap_PassengerMember_688CFD70F4F15D959AA2850D7D7D2CE0" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_PassengerAirTrafficMember" xlink:label="loc_dal_PassengerAirTrafficMember_D323575BB9CA5D3CA881C13FA5B3FB63" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PassengerMember_688CFD70F4F15D959AA2850D7D7D2CE0" xlink:to="loc_dal_PassengerAirTrafficMember_D323575BB9CA5D3CA881C13FA5B3FB63" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_PassengerLoyaltyTravelAwardsMember" xlink:label="loc_dal_PassengerLoyaltyTravelAwardsMember_479E247DD4235D9F814B9FB22AFA5225" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PassengerMember_688CFD70F4F15D959AA2850D7D7D2CE0" xlink:to="loc_dal_PassengerLoyaltyTravelAwardsMember_479E247DD4235D9F814B9FB22AFA5225" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_PassengerTravelRelatedServicesMember" xlink:label="loc_dal_PassengerTravelRelatedServicesMember_99768448083553E388EEBFD6FDBDDC91" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PassengerMember_688CFD70F4F15D959AA2850D7D7D2CE0" xlink:to="loc_dal_PassengerTravelRelatedServicesMember_99768448083553E388EEBFD6FDBDDC91" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_6C9D388546885FB58AB0130D1C090E69" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_D82869DBC47159E0A32132026C353AE1" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_6C9D388546885FB58AB0130D1C090E69" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/RevenueRecognitionRevenueByGeographicRegionDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueLineItems" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_F1E15B2884D452D39F64082515A6324B" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_F24A5FE8BEA0571D9341022B796B4A6F" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_F1E15B2884D452D39F64082515A6324B" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_F24A5FE8BEA0571D9341022B796B4A6F" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_1781CE547EE95B29AB96ADA2B6486A63" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_F24A5FE8BEA0571D9341022B796B4A6F" xlink:to="loc_srt_ProductOrServiceAxis_1781CE547EE95B29AB96ADA2B6486A63" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_221DA1CCC2DDAEA73962C407754E4242_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_1781CE547EE95B29AB96ADA2B6486A63" xlink:to="loc_srt_ProductsAndServicesDomain_221DA1CCC2DDAEA73962C407754E4242_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_E22FAEED6E0A5013B0AB19C323416E5B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_1781CE547EE95B29AB96ADA2B6486A63" xlink:to="loc_srt_ProductsAndServicesDomain_E22FAEED6E0A5013B0AB19C323416E5B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PassengerMember" xlink:label="loc_us-gaap_PassengerMember_FF553888F3A85D0EB7FAD228B990A5C6" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_E22FAEED6E0A5013B0AB19C323416E5B" xlink:to="loc_us-gaap_PassengerMember_FF553888F3A85D0EB7FAD228B990A5C6" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AirlineDestinationsAxis" xlink:label="loc_us-gaap_AirlineDestinationsAxis_8692DEB48BD35F91AA3472F1C476B361" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_F24A5FE8BEA0571D9341022B796B4A6F" xlink:to="loc_us-gaap_AirlineDestinationsAxis_8692DEB48BD35F91AA3472F1C476B361" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AirlineDestinationDomain" xlink:label="loc_us-gaap_AirlineDestinationDomain_32B62AC5971F5B1DB37FC407754FA175_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AirlineDestinationsAxis_8692DEB48BD35F91AA3472F1C476B361" xlink:to="loc_us-gaap_AirlineDestinationDomain_32B62AC5971F5B1DB37FC407754FA175_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AirlineDestinationDomain" xlink:label="loc_us-gaap_AirlineDestinationDomain_01EDC15659A655A983B3D1244DB72531" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AirlineDestinationsAxis_8692DEB48BD35F91AA3472F1C476B361" xlink:to="loc_us-gaap_AirlineDestinationDomain_01EDC15659A655A983B3D1244DB72531" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DomesticDestinationMember" xlink:label="loc_us-gaap_DomesticDestinationMember_172F02A6B6CC50EC9DA3A7DB46537230" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AirlineDestinationDomain_01EDC15659A655A983B3D1244DB72531" xlink:to="loc_us-gaap_DomesticDestinationMember_172F02A6B6CC50EC9DA3A7DB46537230" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AtlanticDestinationMember" xlink:label="loc_us-gaap_AtlanticDestinationMember_62A1544FB382528788C762E002E70C76" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AirlineDestinationDomain_01EDC15659A655A983B3D1244DB72531" xlink:to="loc_us-gaap_AtlanticDestinationMember_62A1544FB382528788C762E002E70C76" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LatinAmericaDestinationMember" xlink:label="loc_us-gaap_LatinAmericaDestinationMember_4CCFC1B5C2695620996453B5C53CC499" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AirlineDestinationDomain_01EDC15659A655A983B3D1244DB72531" xlink:to="loc_us-gaap_LatinAmericaDestinationMember_4CCFC1B5C2695620996453B5C53CC499" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PacificDestinationMember" xlink:label="loc_us-gaap_PacificDestinationMember_6C5CCBC7C6345AD4AA71F277767B2964" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AirlineDestinationDomain_01EDC15659A655A983B3D1244DB72531" xlink:to="loc_us-gaap_PacificDestinationMember_6C5CCBC7C6345AD4AA71F277767B2964" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_4BC59CAC71B854958D6D42F3583E2897" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_F1E15B2884D452D39F64082515A6324B" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_4BC59CAC71B854958D6D42F3583E2897" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/RevenueRecognitionTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/Segments" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/SegmentsNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_B956A8C835325D40A62F0793BA79D79B" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BE54FB459A8F579398287D46928006F4" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B956A8C835325D40A62F0793BA79D79B" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BE54FB459A8F579398287D46928006F4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_EA59750369455FEF9E6E595190A63C35" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BE54FB459A8F579398287D46928006F4" xlink:to="loc_srt_ConsolidationItemsAxis_EA59750369455FEF9E6E595190A63C35" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_3D6947D59EAE6BA61EE7C3D9BF206F45_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_EA59750369455FEF9E6E595190A63C35" xlink:to="loc_srt_ConsolidationItemsDomain_3D6947D59EAE6BA61EE7C3D9BF206F45_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_3F40331BAA5F57D5A4E93B60DC097647" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_EA59750369455FEF9E6E595190A63C35" xlink:to="loc_srt_ConsolidationItemsDomain_3F40331BAA5F57D5A4E93B60DC097647" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_4DC5C78C61F45689B43D4A0E12079471" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_3F40331BAA5F57D5A4E93B60DC097647" xlink:to="loc_us-gaap_IntersegmentEliminationMember_4DC5C78C61F45689B43D4A0E12079471" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_575AA5406FAB5F50BE174B741DB9B831" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BE54FB459A8F579398287D46928006F4" xlink:to="loc_srt_ProductOrServiceAxis_575AA5406FAB5F50BE174B741DB9B831" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_6F91AA9E827479F9FBB9C3D9BF21121B_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_575AA5406FAB5F50BE174B741DB9B831" xlink:to="loc_srt_ProductsAndServicesDomain_6F91AA9E827479F9FBB9C3D9BF21121B_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_0ABED867D96E5D859AD1B8FDB4F34692" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_575AA5406FAB5F50BE174B741DB9B831" xlink:to="loc_srt_ProductsAndServicesDomain_0ABED867D96E5D859AD1B8FDB4F34692" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ExchangedProductsMember" xlink:label="loc_dal_ExchangedProductsMember_BC6D5A2CCBFD55A591CCB8C7BE5CAD5C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0ABED867D96E5D859AD1B8FDB4F34692" xlink:to="loc_dal_ExchangedProductsMember_BC6D5A2CCBFD55A591CCB8C7BE5CAD5C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationProfitLossAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_072D14CD2A7B5024B20A5700F7E30B6C" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_B956A8C835325D40A62F0793BA79D79B" xlink:to="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_072D14CD2A7B5024B20A5700F7E30B6C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_B4B4E5755928529A9FC9FC4247B5B75A" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_072D14CD2A7B5024B20A5700F7E30B6C" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_B4B4E5755928529A9FC9FC4247B5B75A" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/SegmentsScheduleOfSegmentReportingDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_F5FF61DCEA735A3E93BA81647FC0600D" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0F7E31444BE25323B59F7DF02F145183" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_F5FF61DCEA735A3E93BA81647FC0600D" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0F7E31444BE25323B59F7DF02F145183" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsAxis" xlink:label="loc_srt_ConsolidationItemsAxis_27D73E9784485FEDB8DB7DD4F4049920" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0F7E31444BE25323B59F7DF02F145183" xlink:to="loc_srt_ConsolidationItemsAxis_27D73E9784485FEDB8DB7DD4F4049920" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_1EE93F489D5505EF761CCDFD94B27E65_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_27D73E9784485FEDB8DB7DD4F4049920" xlink:to="loc_srt_ConsolidationItemsDomain_1EE93F489D5505EF761CCDFD94B27E65_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ConsolidationItemsDomain" xlink:label="loc_srt_ConsolidationItemsDomain_C277C64BCE265FA4B992C54B01216D64" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_27D73E9784485FEDB8DB7DD4F4049920" xlink:to="loc_srt_ConsolidationItemsDomain_C277C64BCE265FA4B992C54B01216D64" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:label="loc_us-gaap_OperatingSegmentsMember_6C38D43A234A5086AE4DBDD36D96CD8D" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_C277C64BCE265FA4B992C54B01216D64" xlink:to="loc_us-gaap_OperatingSegmentsMember_6C38D43A234A5086AE4DBDD36D96CD8D" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_9D2912B874415D56B434A0FAC8E83936" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_C277C64BCE265FA4B992C54B01216D64" xlink:to="loc_us-gaap_IntersegmentEliminationMember_9D2912B874415D56B434A0FAC8E83936" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_83647328F903582E8B60EB5812399B3C" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0F7E31444BE25323B59F7DF02F145183" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_83647328F903582E8B60EB5812399B3C" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_35263FFB45C1855906D9CDFD94B3F25A_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_83647328F903582E8B60EB5812399B3C" xlink:to="loc_us-gaap_SegmentDomain_35263FFB45C1855906D9CDFD94B3F25A_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_3CDC592614E750409FBD8276657C8FDF" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_83647328F903582E8B60EB5812399B3C" xlink:to="loc_us-gaap_SegmentDomain_3CDC592614E750409FBD8276657C8FDF" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_AirlineMember" xlink:label="loc_dal_AirlineMember_8309C901CC68599280F6AF871A9EC807" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3CDC592614E750409FBD8276657C8FDF" xlink:to="loc_dal_AirlineMember_8309C901CC68599280F6AF871A9EC807" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_RefineryMember" xlink:label="loc_dal_RefineryMember_17CD3247EDCC504FA2022ED144A6EC6A" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3CDC592614E750409FBD8276657C8FDF" xlink:to="loc_dal_RefineryMember_17CD3247EDCC504FA2022ED144A6EC6A" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_E26EF8520E80575491E4AAD84153437E" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_0F7E31444BE25323B59F7DF02F145183" xlink:to="loc_srt_ProductOrServiceAxis_E26EF8520E80575491E4AAD84153437E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_3519B8307C4FC7F25AE9CDFD94B46537_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_E26EF8520E80575491E4AAD84153437E" xlink:to="loc_srt_ProductsAndServicesDomain_3519B8307C4FC7F25AE9CDFD94B46537_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_0A788DB7D4445704832DB0B862B9C450" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_E26EF8520E80575491E4AAD84153437E" xlink:to="loc_srt_ProductsAndServicesDomain_0A788DB7D4445704832DB0B862B9C450" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_SalestoairlinesegmentMember" xlink:label="loc_dal_SalestoairlinesegmentMember_C9D8D3DFAEFA5787920610384E94BFE9" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0A788DB7D4445704832DB0B862B9C450" xlink:to="loc_dal_SalestoairlinesegmentMember_C9D8D3DFAEFA5787920610384E94BFE9" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_ExchangedProductsMember" xlink:label="loc_dal_ExchangedProductsMember_A428B558180B55B2845FFB1C3EE6E33B" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0A788DB7D4445704832DB0B862B9C450" xlink:to="loc_dal_ExchangedProductsMember_A428B558180B55B2845FFB1C3EE6E33B" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_SalesofrefinedproductstothirdpartiesMember" xlink:label="loc_dal_SalesofrefinedproductstothirdpartiesMember_8E38E04DD9A95A63BC8361A2FC233903" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_0A788DB7D4445704832DB0B862B9C450" xlink:to="loc_dal_SalesofrefinedproductstothirdpartiesMember_8E38E04DD9A95A63BC8361A2FC233903" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentReportingInformationProfitLossAbstract" xlink:label="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_52758BE526095855BAA409539D40FA13" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_F5FF61DCEA735A3E93BA81647FC0600D" xlink:to="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_52758BE526095855BAA409539D40FA13" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7F29F39B5BBA5228A42CB939F0B4FA2B" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_52758BE526095855BAA409539D40FA13" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7F29F39B5BBA5228A42CB939F0B4FA2B" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_8816823D4EDF5578A82BC989EB5A3227" xlink:type="locator"/>

<link:definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_52758BE526095855BAA409539D40FA13" xlink:to="loc_us-gaap_OperatingIncomeLoss_8816823D4EDF5578A82BC989EB5A3227" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaap_InterestIncomeExpenseNet_CA281B9905AE5083861B7E4B2B1564F2" xlink:type="locator"/>

<link:definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_52758BE526095855BAA409539D40FA13" xlink:to="loc_us-gaap_InterestIncomeExpenseNet_CA281B9905AE5083861B7E4B2B1564F2" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_1078B6CDDD625C57A8CCEF041DD69699" xlink:type="locator"/>

<link:definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_52758BE526095855BAA409539D40FA13" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_1078B6CDDD625C57A8CCEF041DD69699" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_CD7D708EB94953348A669A13B01E70CF" xlink:type="locator"/>

<link:definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_52758BE526095855BAA409539D40FA13" xlink:to="loc_us-gaap_Assets_CD7D708EB94953348A669A13B01E70CF" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:label="loc_us-gaap_PaymentsToAcquireProductiveAssets_37D0CF4D89F652D88CF05CF31A6E23D2" xlink:type="locator"/>

<link:definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationProfitLossAbstract_52758BE526095855BAA409539D40FA13" xlink:to="loc_us-gaap_PaymentsToAcquireProductiveAssets_37D0CF4D89F652D88CF05CF31A6E23D2" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/SegmentsTables" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/SummaryOfSignificantAccountingPolicies" xlink:type="extended"/>

<link:definitionLink xlink:role="http://www.delta.com/role/SummaryOfSignificantAccountingPoliciesNarrativeDetails" xlink:type="extended">

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_95007F4C6DBF58A585D3197C61BA62A3" xlink:type="locator"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_F04E0F610E4D58D3BFD70D5DB4CF7E61" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_95007F4C6DBF58A585D3197C61BA62A3" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_F04E0F610E4D58D3BFD70D5DB4CF7E61" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_195C847FD7DC560AB7D94E07A6087AAE" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_F04E0F610E4D58D3BFD70D5DB4CF7E61" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_195C847FD7DC560AB7D94E07A6087AAE" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_6FAB8804AEF640578B78C3D9BF666FC5_3E115836C3585B0E89F29F5998C6FF09" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_195C847FD7DC560AB7D94E07A6087AAE" xlink:to="loc_us-gaap_TypeOfAdoptionMember_6FAB8804AEF640578B78C3D9BF666FC5_3E115836C3585B0E89F29F5998C6FF09" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:label="loc_us-gaap_TypeOfAdoptionMember_4B7E4053CCDF54BF83633EF21BAF413E" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_195C847FD7DC560AB7D94E07A6087AAE" xlink:to="loc_us-gaap_TypeOfAdoptionMember_4B7E4053CCDF54BF83633EF21BAF413E" xlink:type="arc"/>

<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountingStandardsUpdate201802Member" xlink:label="loc_us-gaap_AccountingStandardsUpdate201802Member_B53C00D72F7059F2AA4B4D8BD20D37B2" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_4B7E4053CCDF54BF83633EF21BAF413E" xlink:to="loc_us-gaap_AccountingStandardsUpdate201802Member_B53C00D72F7059F2AA4B4D8BD20D37B2" xlink:type="arc"/>

<link:loc xlink:href="dal-20190930.xsd#dal_StrandedTaxEffectNotReclassifiedUponAdoptionOfNewAccountingStandard" xlink:label="loc_dal_StrandedTaxEffectNotReclassifiedUponAdoptionOfNewAccountingStandard_EF23CCE9BA39502584ECFF630CE09402" xlink:type="locator"/>

<link:definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_95007F4C6DBF58A585D3197C61BA62A3" xlink:to="loc_dal_StrandedTaxEffectNotReclassifiedUponAdoptionOfNewAccountingStandard_EF23CCE9BA39502584ECFF630CE09402" xlink:type="arc"/>

</link:definitionLink>

<link:definitionLink xlink:role="http://www.delta.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended"/>

</link:linkbase>

2 Subsequent Filings that Reference this Filing

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

 2/11/22  Delta Air Lines, Inc.             10-K       12/31/21  113:16M
 2/12/21  Delta Air Lines, Inc.             10-K       12/31/20  122:17M

↑Top

Filing Submission 0000027904-19-000012 – Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Delta Air Lines, Inc. – ‘10-Q’ for 9/30/19 – ‘EX-101.DEF’

On: Thursday, 10/10/19, at 4:21pm ET · For: 9/30/19 · Accession #: 27904-19-12 · File #: 1-05424

Previous ‘10-Q’: ‘10-Q’ on 7/11/19 for 6/30/19 · Next: ‘10-Q’ on 4/22/20 for 3/31/20 · Latest: ‘10-Q’ on 4/10/24 for 3/31/24 · 2 References: By: Delta Air Lines, Inc. – ‘10-K’ on 2/11/22 for 12/31/21 By: Delta Air Lines, Inc. – ‘10-K’ on 2/12/21 for 12/31/20

Quarterly Report — Form 10-Q — Sect. 13 / 15(d) – SEA’34Filing Table of Contents

‘EX-101.DEF’ — XBRL Definitions — dal-20190930_def

This Exhibit is an XBRL XML File.

2 Subsequent Filings that Reference this Filing

Previous ‘10-Q’: ‘10-Q’ on 7/11/19 for 6/30/19 · Next: ‘10-Q’ on 4/22/20 for 3/31/20 · Latest: ‘10-Q’ on 4/10/24 for 3/31/24 · 2 References:

Quarterly Report — Form 10-Q — Sect. 13 / 15(d) – SEA’34
Filing Table of Contents