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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-10-19</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001739426</issuerCik>
        <issuerName>RVL Pharmaceuticals plc</issuerName>
        <issuerTradingSymbol>RVLP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001752864</rptOwnerCik>
            <rptOwnerName>Altchem Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CITY HOUSE</rptOwnerStreet1>
            <rptOwnerStreet2>6 KARAISKAKIS STREET</rptOwnerStreet2>
            <rptOwnerCity>LIMASSOL</rptOwnerCity>
            <rptOwnerState>G4</rptOwnerState>
            <rptOwnerZipCode>3032</rptOwnerZipCode>
            <rptOwnerStateDescription>CYPRUS</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001753129</rptOwnerCik>
            <rptOwnerName>Orbit Co-Invest A-1 LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>885 3RD AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>17TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2023-10-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>9363760</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.0461</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9700000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2023-10-20</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4758899</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.0312</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4941101</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1182243</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Self as Sole Manager of Orbit Co-Invest A-1 LLC</value>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in Column 4 is the average execution price. These shares were sold in multiple transactions at prices ranging from $0.0400 to $0.0580, inclusive. The reporting person undertakes to provide RVL Pharmaceuticals plc, any security holder of RVL Pharmaceuticals plc or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
        <footnote id="F2">The price reported in Column 4 is the average execution price. These shares were sold in multiple transactions at prices ranging from $0.0300 to $0.0373, inclusive. The reporting person undertakes to provide RVL Pharmaceuticals plc, any security holder of RVL Pharmaceuticals plc or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.</footnote>
        <footnote id="F3">Represents shares of the Issuer held by Orbit Co-Invest A-1 LLC. Altchem Limited is the sole manager of Orbit Co-Invest A-1 LLC. As a result, Altchem Limited may be deemed to share voting and investment power with respect to the shares held by Orbit Co-Invest A-1 LLC. Altchem Limited disclaims beneficial ownership of such shares and the inclusion of the shares in this report shall not be deemed to be an admission of beneficial ownership for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/MILITSA SYMEOU, Altchem Limited, by Militsa Symeou, its Director</signatureName>
        <signatureDate>2023-10-23</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/MILITSA SYMEOU, Orbit Co-Invest A-1 LLC, by Altchem Limited, its sole manager</signatureName>
        <signatureDate>2023-10-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
