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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2015-01-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001613103</issuerCik>
        <issuerName>Medtronic plc</issuerName>
        <issuerTradingSymbol>MDT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001290170</rptOwnerCik>
            <rptOwnerName>Ellis Gary Lee</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O MEDTRONIC INC,</rptOwnerStreet1>
            <rptOwnerStreet2>710 MEDTRONIC PKWY MS LC300</rptOwnerStreet2>
            <rptOwnerCity>MINNEAPOLIS</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55432</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP &amp; Chief Financial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2015-01-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>171237</value>
                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>171237</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2015-01-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
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            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5093</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>401(k)</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2015-01-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>7632</value>
                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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            <postTransactionAmounts>
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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>ESOP</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            </conversionOrExercisePrice>
            <transactionDate>
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            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
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                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F2"/>
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            <expirationDate>
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            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>48.70</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-01-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <transactionCode>A</transactionCode>
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            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>41068</value>
                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
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            <expirationDate>
                <value>2016-10-30</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
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                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
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            <ownershipNature>
                <directOrIndirectOwnership>
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            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-01-26</value>
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            <deemedExecutionDate></deemedExecutionDate>
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                <transactionCode>A</transactionCode>
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            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
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                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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            </transactionAmounts>
            <exerciseDate>
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            <expirationDate>
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            </expirationDate>
            <underlyingSecurity>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </underlyingSecurityShares>
            </underlyingSecurity>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock option (right to buy)</value>
            </securityTitle>
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            </conversionOrExercisePrice>
            <transactionDate>
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            <deemedExecutionDate></deemedExecutionDate>
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                <transactionPricePerShare>
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            <exerciseDate>
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            <expirationDate>
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            <underlyingSecurity>
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            </underlyingSecurity>
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            <transactionTimeliness>
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                    <value>71192</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>62.76</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-01-26</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1594</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F14"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F14"/>
            </exerciseDate>
            <expirationDate>
                <value>2024-07-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1594</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1594</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares of Medtronic plc (&quot;New Medtronic&quot;) acquired pursuant to the merger (the &quot;Merger&quot;) of a wholly-owned subsidiary of New Medtronic with and into Medtronic, Inc. (&quot;Medtronic&quot;), with Medtronic surviving as a wholly-owned subsidiary of New Medtronic, in exchange for ordinary shares of New Medtronic, which was consummated after and conditioned on New Medtronic's acquisition of Covidien plc, by means of a &quot;scheme of arrangement&quot;, an Irish statutory procedure under the Companies Act of 1963. At the effective time of the Merger, each Medtronic common share was cancelled and converted into the right to receive one New Medtronic ordinary share. Under the terms of the Merger, the officer received cash in lieu of fractional shares of New Medtronic and restricted stock units were rounded up to the nearest whole share.</footnote>
        <footnote id="F2">This option to purchase 37,011 ordinary shares of New Medtronic for $56.74 per share, which was fully vested at the effective time of the Merger, was received in the Merger and represents the conversion of 37,011 Medtronic common stock shares for $56.74 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F3">This option to purchase 41,068 New Medtronic ordinary shares for $48.70 per share, which was fully vested at the effective time of the Merger, was received in the Merger and represents the conversion of 41,068 Medtronic common stock shares for $48.70 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F4">This option to purchase 41,868 New Medtronic ordinary shares for $47.77 per share, which was fully vested at the effective time of the Merger, was received in the Merger and represents the conversion of 41,868 Medtronic common stock shares for $47.77 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F5">This option to purchase 55,188 New Medtronic ordinary shares for $36.24 per share, which was fully vested at the effective time of the Merger, was received in the Merger and represents the conversion of 55,188 Medtronic common stock shares for $36.24 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F6">This option to purchase 50,112 New Medtronic ordinary shares for $35.92 per share, which was fully vested at the effective time of the Merger, was received in the Merger and represents the conversion of 50,112 Medtronic common stock shares for $35.92 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F7">This option to purchase 70,984 New Medtronic ordinary shares for $37.53 per share, which was fully vested at the effective time of the Merger, was received in the Merger and represents the conversion of 70,984 Medtronic common stock shares for $37.53 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F8">This option to purchase 91,744 New Medtronic ordinary shares for $34.88 per share, which was partially vested at the effective time of the Merger, was received in the Merger and represents the conversion of 91,744 Medtronic common stock shares for $34.88 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F9">This option to purchase 82,453 New Medtronic ordinary shares for $38.81per share, which was partially vested at the effective time of the Merger, was received in the Merger and represents the conversion of 82,453 Medtronic common stock shares for $38.81per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F10">This option to purchase 2,404 New Medtronic ordinary shares for $41.60 per share, which was partially vested at the effective time of the Merger, was received in the Merger and represents the conversion of 2,404 Medtronic common stock shares for $41.60 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F11">This option to purchase 60,250 New Medtronic ordinary shares for $55.32 per share, which was partially vested at the effective time of the Merger, was received in the Merger and represents the conversion of 60,250 Medtronic common stock shares for $55.32 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F12">This option to purchase 1,808 New Medtronic ordinary shares for $55.32per share, which was partially vested at the effective time of the Merger, was received in the Merger and represents the conversion of 1,808 Medtronic common stock shares for $55.32per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F13">This option to purchase 71,192 New Medtronic ordinary shares for $62.76 per share, which was partially vested at the effective time of the Merger, was received in the Merger and represents the conversion of 71,192 Medtronic common stock shares for $62.76 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
        <footnote id="F14">This option to purchase 1,594 New Medtronic ordinary shares for $62.76 per share, which was partially vested at the effective time of the Merger, was received in the Merger and represents the conversion of 1,594 Medtronic common stock shares for $62.76 per share. This New Medtronic stock option has the same terms and conditions as the original Medtronic stock option.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Rhonda L. Ingalsbe, Attorney-in-fact</signatureName>
        <signatureDate>2015-01-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
