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

    <schemaVersion>X0306</schemaVersion>

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    <periodOfReport>2018-05-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001707178</issuerCik>
        <issuerName>CorePoint Lodging Inc.</issuerName>
        <issuerTradingSymbol>CPLG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001672438</rptOwnerCik>
            <rptOwnerName>CANTELE JOHN W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O COREPOINT LODGING INC.,</rptOwnerStreet1>
            <rptOwnerStreet2>909 HIDDEN RIDGE, SUITE 600</rptOwnerStreet2>
            <rptOwnerCity>IRVING</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75038</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP &amp; COO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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    <footnotes>
        <footnote id="F1">Represents equity awards granted by the Issuer with respect to equity awards of La Quinta Holdings Inc. (&quot;La Quinta&quot;) held by the Reporting Person prior to the spin-off of the Issuer from La Quinta.</footnote>
        <footnote id="F2">Represents a restricted stock award that vests on February 28, 2019.</footnote>
        <footnote id="F3">Includes common stock of the Issuer received with respect to shares of common stock of La Quinta held by the Reporting Person prior to the spin-off of the Issuer from La Quinta.</footnote>
        <footnote id="F4">Represents a restricted stock award that vests on December 31, 2018.</footnote>
        <footnote id="F5">Represents a restricted stock award that vests on December 31, 2019.</footnote>
        <footnote id="F6">Represents a restricted stock award that vests in two equal annual installments beginning on December 31, 2018.</footnote>
        <footnote id="F7">Represents a restricted stock award that vests on April 25, 2019.</footnote>
        <footnote id="F8">Represents a grant of restricted stock that vests in three equal annual installments beginning on December 15, 2018.</footnote>
        <footnote id="F9">Represents a grant of restricted stock that vests on May 31, 2021.</footnote>
        <footnote id="F10">Represents a grant of restricted stock that vests on May 31, 2022.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mark M. Chloupek, as Attorney-in-fact</signatureName>
        <signatureDate>2018-06-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
