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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-11-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001840780</issuerCik>
        <issuerName>Local Bounti Corporation/DE</issuerName>
        <issuerTradingSymbol>LOCL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001694525</rptOwnerCik>
            <rptOwnerName>VALIASEK KATHLEEN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LOCAL BOUNTI CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>490 FOLEY LANE</rptOwnerStreet2>
            <rptOwnerCity>HAMILTON</rptOwnerCity>
            <rptOwnerState>MT</rptOwnerState>
            <rptOwnerZipCode>59840</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-11-19</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1552445</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1552445</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Includes (i) 496,967 Restricted Stock Units (&quot;RSUs&quot;) awarded under the Issuer's the 2020 Equity Incentive Plan, as amended from time to time (&quot;the 2020 Plan&quot;), subject to the continuous service of the Reporting Person on each vesting date: 10% will vest on the one May 1, 2022 with the remaining RSUs vesting in three (3) annual 30% installments thereafter and (ii) 1,055,478 Restricted Stock shares awarded under the 2020 Plan which will vest as follows: 10% will vest on March 15, 2022 with the remaining Restricted Stock shares vesting in three (3) annual 30% installments thereafter.</footnote>
        <footnote id="F2">Received pursuant to certain Agreement and Plan of Merger (as it may be amended, supplemented or otherwise modified from time to time), dated as of June 17, 2021, by and among Leo Holdings III Corp, a Cayman Islands exempted company, Longleaf Merger Sub, Inc., a Delaware corporation, Longleaf Merger Sub II, LLC, a Delaware limited liability company, and the Issuer.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Kathleen Valiasek</signatureName>
        <signatureDate>2021-11-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
