<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-07-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001590895</issuerCik>
        <issuerName>Caesars Entertainment, Inc.</issuerName>
        <issuerTradingSymbol>CZR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001608717</rptOwnerCik>
            <rptOwnerName>MATHER COURTNEY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>100 WEST LIBERTY STREET, SUITE 1150</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>RENO</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>89501</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-07-20</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8164</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8164</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On July 20, 2020, pursuant to that certain Agreement and Plan of Merger, dated as of June 24, 2019 (as amended by Amendment No. 1 to Agreement and Plan of Merger, dated as of August 15, 2019, the &quot;Merger Agreement&quot;), by and among Caesars Entertainment Corporation (&quot;Old Caesars&quot;), Eldorado Resorts, Inc. (&quot;Eldorado&quot;) and Colt Merger Sub, Inc., a wholly owned subsidiary of Eldorado (&quot;Merger Sub&quot;), Merger Sub merged with and into Old Caesars, with Old Caesars continuing as the surviving corporation and a wholly owned subsidiary of Eldorado (the &quot;Merger&quot;).  At the effective time of the Merger, Eldorado changed its name to Caesars Entertainment, Inc. (&quot;New Caesars&quot;).  Pursuant to the Merger Agreement, the reporting person received the number of units to acquire shares of New Caesars common stock reported above in exchange for approximately 26,463 units to acquire shares of Old Caesars common stock.</footnote>
        <footnote id="F2">(Continued from Footnote 1) The reporting person has previously elected to defer receipt of these shares until separation from service.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jill Eaton, by power of attorney</signatureName>
        <signatureDate>2020-07-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
