<SEC-DOCUMENT>0000899243-20-009192.txt : 20200320
<SEC-HEADER>0000899243-20-009192.hdr.sgml : 20200320
<ACCEPTANCE-DATETIME>20200320183539
ACCESSION NUMBER:		0000899243-20-009192
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200228
FILED AS OF DATE:		20200320
DATE AS OF CHANGE:		20200320

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Nocella Andrew P
		CENTRAL INDEX KEY:			0001314824

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06033
		FILM NUMBER:		20733220

	MAIL ADDRESS:	
		STREET 1:		2345 CRYSTAL DRIVE
		CITY:			ARLINGTON
		STATE:			VA
		ZIP:			22227

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			United Airlines Holdings, Inc.
		CENTRAL INDEX KEY:			0000100517
		STANDARD INDUSTRIAL CLASSIFICATION:	AIR TRANSPORTATION, SCHEDULED [4512]
		IRS NUMBER:				362675207
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		JENNIFER L. KRAFT - WHQLD
		STREET 2:		233 SOUTH WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		872-825-4000

	MAIL ADDRESS:	
		STREET 1:		JENNIFER L. KRAFT - WHQLD
		STREET 2:		233 SOUTH WACKER DRIVE
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	United Continental Holdings, Inc.
		DATE OF NAME CHANGE:	20100930

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	UAL CORP /DE/
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALLEGIS CORP
		DATE OF NAME CHANGE:	19880613
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc4a.xml
<DESCRIPTION>FORM 4/A SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2020-02-28</periodOfReport>

    <dateOfOriginalSubmission>2020-03-03</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000100517</issuerCik>
        <issuerName>United Airlines Holdings, Inc.</issuerName>
        <issuerTradingSymbol>UAL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001314824</rptOwnerCik>
            <rptOwnerName>Nocella Andrew P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>P. O. BOX 66100 HDQLD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60666</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP &amp; Chief Commercial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-02-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4605</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>61.59</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>39739</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The original Form 4 filed on March 3, 2020 is amended by this Form 4 amendment to correct the Transaction Code in Table I, Column 3, Row 4 from M to F.</footnote>
        <footnote id="F2">This transaction represents the withholding of shares to pay tax withholding obligations associated with the vesting of the RSU awards granted on February 27, 2017, February 22, 2018 and February 27, 2019.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Sarah Hagy for Andrew P. Nocella</signatureName>
        <signatureDate>2020-03-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
