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  <xs:element id="ual_PayrollSupportProgram2PSP2WarrantsMember" abstract="true" name="PayrollSupportProgram2PSP2WarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_ContractsMember" abstract="true" name="ContractsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalIssuanceFromAchievementOfPerformanceMetrics" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdditionalIssuanceFromAchievementOfPerformanceMetrics" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ual_A2021ATMOfferingMember" abstract="true" name="A2021ATMOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_PassengerAncillaryFeesMember" abstract="true" name="PassengerAncillaryFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_CARESActWarrantsMember" abstract="true" name="CARESActWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_NumberOfAircraftsExpectedToTakeDeliveryThatAreDelayed" abstract="false" name="NumberOfAircraftsExpectedToTakeDeliveryThatAreDelayed" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ual_SummaryOfSignificantAccountingPoliciesTable" abstract="true" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ual_OtherUnsecuredDebtMember" abstract="true" name="OtherUnsecuredDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_PayrollSupportProgram2And3PSP23NoteMember" abstract="true" name="PayrollSupportProgram2And3PSP23NoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_DeferredTaxAssetsOtherFinancingLiability" abstract="false" name="DeferredTaxAssetsOtherFinancingLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_ThirdPartyBusinessPolicyTextBlock" abstract="false" name="ThirdPartyBusinessPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ual_TradenamesAndLogosMember" abstract="true" name="TradenamesAndLogosMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_ContractWithCustomerLiabilityNoncurrentFrequentFlyer" abstract="false" name="ContractWithCustomerLiabilityNoncurrentFrequentFlyer" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_NumberOfAircraftAcquiredWithExercisedPurchaseOptions" abstract="false" name="NumberOfAircraftAcquiredWithExercisedPurchaseOptions" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ual_ChaseAndOtherPartnerAgreementsMember" abstract="true" name="ChaseAndOtherPartnerAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_IncreaseDecreaseInContractWithCustomerLiabilityAdvanceTicketSales" abstract="false" name="IncreaseDecreaseInContractWithCustomerLiabilityAdvanceTicketSales" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_AlternativeMember" abstract="true" name="AlternativeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_A650SeniorSecuredNotesDue2027MileagePlusSeniorSecuredNotesMember" abstract="true" name="A650SeniorSecuredNotesDue2027MileagePlusSeniorSecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_ProceedsFromGovernmentAssistance" abstract="false" name="ProceedsFromGovernmentAssistance" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_SaleOfStockNumberOfSharesIssuableUnderAgreement" abstract="false" name="SaleOfStockNumberOfSharesIssuableUnderAgreement" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="ual_CreditAgreementMember" abstract="true" name="CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_FairValueTable" abstract="true" name="FairValueTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ual_SecuredNotesMember" abstract="true" name="SecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_TravelMilesRedemptionFrequentFlyerDeferredRevenue" abstract="false" name="TravelMilesRedemptionFrequentFlyerDeferredRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_MovementInContractWithCustomerLiabilityRollForward" abstract="true" name="MovementInContractWithCustomerLiabilityRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ual_TicketTaxesPolicyTextBlock" abstract="false" name="TicketTaxesPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ual_DeferredIncomeTaxAssetsAndLiabilitiesLineItems" abstract="true" name="DeferredIncomeTaxAssetsAndLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ual_DeferredTaxAssetPortionToBeUtilizedAgainstFutureTaxableIncome" abstract="false" name="DeferredTaxAssetPortionToBeUtilizedAgainstFutureTaxableIncome" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_RestructuringAndRelatedCostNumberOfEmployeesVoluntarilySeparated" abstract="false" name="RestructuringAndRelatedCostNumberOfEmployeesVoluntarilySeparated" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ual_CapitalContributionsToParent" abstract="false" name="CapitalContributionsToParent" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_DefinedBenefitPlanNetPeriodicBenefitCostCreditGainLossDueToSettlementRestructuringAndSpecialAndContractualTerminationBenefits" abstract="false" name="DefinedBenefitPlanNetPeriodicBenefitCostCreditGainLossDueToSettlementRestructuringAndSpecialAndContractualTerminationBenefits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_MesaAirGroupIncMember" abstract="true" name="MesaAirGroupIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_VariableAndShortTermLeaseCost" abstract="false" name="VariableAndShortTermLeaseCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_AircraftSeatsMember" abstract="true" name="AircraftSeatsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_DeterminationPeriodAverageClosingPrice" abstract="false" name="DeterminationPeriodAverageClosingPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ual_DebtInstrumentRemainingTerms" abstract="false" name="DebtInstrumentRemainingTerms" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ual_PayrollSupportProgram3PSP3WarrantsMember" abstract="true" name="PayrollSupportProgram3PSP3WarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_RestrictedStockUnitsRSUsLiabilityAwardsMember" abstract="true" name="RestrictedStockUnitsRSUsLiabilityAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_CapacityPurchaseAgreementsMember" abstract="true" name="CapacityPurchaseAgreementsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_ScheduleOfChangeInAssumptionsOnNetPeriodicBenefitCostAndBenefitObligationsTableTextBlock" abstract="false" name="ScheduleOfChangeInAssumptionsOnNetPeriodicBenefitCostAndBenefitObligationsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ual_DebtCovenantRequiredLiquidity" abstract="false" name="DebtCovenantRequiredLiquidity" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_IncomeTaxesTable" abstract="true" name="IncomeTaxesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="ual_UnitedAirLinesIncMember" abstract="true" name="UnitedAirLinesIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_NetOperatingLossCarryForwardExpirationYear2029Member" abstract="true" name="NetOperatingLossCarryForwardExpirationYear2029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_OperatingLossCarryforwardsExpirationPeriod" abstract="false" name="OperatingLossCarryforwardsExpirationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ual_PayrollSupportProgram1PSP1WarrantsMember" abstract="true" name="PayrollSupportProgram1PSP1WarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_PayrollSupportProgram23PSP23WarrantsMember" abstract="true" name="PayrollSupportProgram23PSP23WarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_FutureLeasePaymentTermsForCapacityPurchaseAgreementTableTextBlock" abstract="false" name="FutureLeasePaymentTermsForCapacityPurchaseAgreementTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ual_CommitmentsAndContingenciesLineItems" abstract="true" name="CommitmentsAndContingenciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ual_PayrollSupportProgramPSPNoteMember" abstract="true" name="PayrollSupportProgramPSPNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_FloatingRateDebtMember" abstract="true" name="FloatingRateDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_UnsecuredNotesMember" abstract="true" name="UnsecuredNotesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_LoansAndLeasesFromNonUSEntitiesMember" abstract="true" name="LoansAndLeasesFromNonUSEntitiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_DebtExtinguishmentAndModificationFeesNonOperating" abstract="false" name="DebtExtinguishmentAndModificationFeesNonOperating" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_SummaryOfSignificantAccountingPoliciesLineItems" abstract="true" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ual_RestructuringProgramsOneTimeContributionPerEmployee" abstract="false" name="RestructuringProgramsOneTimeContributionPerEmployee" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_Boeing787Member" abstract="true" name="Boeing787Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_InvestmentsPolicyTextBlock" abstract="false" name="InvestmentsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ual_NumberOfAircraftsExpectedToTakeDeliveryAbstract" abstract="true" name="NumberOfAircraftsExpectedToTakeDeliveryAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ual_TaxCreditCarryforwardExpirationPeriod" abstract="false" name="TaxCreditCarryforwardExpirationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ual_A737MaxMember" abstract="true" name="A737MaxMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_OtherFinancialLiabilitiesWeightedAverageRemainingLeaseTerm" abstract="false" name="OtherFinancialLiabilitiesWeightedAverageRemainingLeaseTerm" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ual_AircraftAndRelatedRotablePartsMember" abstract="true" name="AircraftAndRelatedRotablePartsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_SpecialChargesLineItems" abstract="true" name="SpecialChargesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ual_PayrollSupportProgram3PSP3NoteMember" abstract="true" name="PayrollSupportProgram3PSP3NoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_NumberOfTechnicians" abstract="false" name="NumberOfTechnicians" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ual_DepositAdministrationFundMember" abstract="true" name="DepositAdministrationFundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_OtherComprehensiveIncomeInvestmentsAndOtherNetOfTax" abstract="false" name="OtherComprehensiveIncomeInvestmentsAndOtherNetOfTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_UsedAircraftFacilityMember" abstract="true" name="UsedAircraftFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_PotentialNumberOfAircraftOperated" abstract="false" name="PotentialNumberOfAircraftOperated" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ual_ContractWithCustomerLiabilityCurrentAdvanceTicketSales" abstract="false" name="ContractWithCustomerLiabilityCurrentAdvanceTicketSales" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_LaborCostsPolicyTextBlock" abstract="false" name="LaborCostsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="ual_LesseeOperatingAndFinanceLeaseNotYetCommencedAmount" abstract="false" name="LesseeOperatingAndFinanceLeaseNotYetCommencedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_CashPaidRefundedDuringPeriodForAbstract" abstract="true" name="CashPaidRefundedDuringPeriodForAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="ual_NumberOfDefinedBenefitPensionPlans" abstract="false" name="NumberOfDefinedBenefitPensionPlans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ual_NumberOfAircraftHeldForSale" abstract="false" name="NumberOfAircraftHeldForSale" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="ual_TermLoanBFacilityDue2028Member" abstract="true" name="TermLoanBFacilityDue2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_OtherFinancialLiabilitiesNoncurrent" abstract="false" name="OtherFinancialLiabilitiesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_NetOperatingLossCarryForwardExpirationYear2026Member" abstract="true" name="NetOperatingLossCarryForwardExpirationYear2026Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_DefinedBenefitPlanProfitSharingAndPayrollTaxExpense" abstract="false" name="DefinedBenefitPlanProfitSharingAndPayrollTaxExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_Boeing737700Member" abstract="true" name="Boeing737700Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_NetOperatingLossCarryForwardExpirationYear2032Member" abstract="true" name="NetOperatingLossCarryForwardExpirationYear2032Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_DeferredTaxAssetPortionToBeUtilizedAgainstDeferredTaxLiabilities" abstract="false" name="DeferredTaxAssetPortionToBeUtilizedAgainstDeferredTaxLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="ual_FrequentFlyerDatabaseMember" abstract="true" name="FrequentFlyerDatabaseMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="ual_ElectronicTravelCertificatesExpirationPeriod" abstract="false" name="ElectronicTravelCertificatesExpirationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="ual_PayableToShareholdersOrAffiliatesForIssuanceOfCapitalStock" abstract="false" name="PayableToShareholdersOrAffiliatesForIssuanceOfCapitalStock" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
