<?xml version="1.0"?><?xml-stylesheet type="text/xsl" href="../4_X02.xsl"?><ownershipDocument>    <schemaVersion>X0304</schemaVersion>    <documentType>4</documentType>    <periodOfReport>2012-03-13</periodOfReport>    <notSubjectToSection16>0</notSubjectToSection16>    <issuer>        <issuerCik>0000923139</issuerCik>        <issuerName>FLUSHING FINANCIAL CORP</issuerName>        <issuerTradingSymbol>FFIC</issuerTradingSymbol>    </issuer>    <reportingOwner>        <reportingOwnerId>            <rptOwnerCik>0001389620</rptOwnerCik>            <rptOwnerName>Jin Jeoung</rptOwnerName>        </reportingOwnerId>        <reportingOwnerAddress>            <rptOwnerStreet1>1979 MARCUS AVENUE</rptOwnerStreet1>            <rptOwnerStreet2>SUITE E140</rptOwnerStreet2>            <rptOwnerCity>LAKE SUCCESS</rptOwnerCity>            <rptOwnerState>NY</rptOwnerState>            <rptOwnerZipCode>11042</rptOwnerZipCode>            <rptOwnerStateDescription></rptOwnerStateDescription>        </reportingOwnerAddress>        <reportingOwnerRelationship>            <isDirector>0</isDirector>            <isOfficer>1</isOfficer>            <isTenPercentOwner>0</isTenPercentOwner>            <isOther>0</isOther>            <officerTitle>Senior Vice President</officerTitle>        </reportingOwnerRelationship>    </reportingOwner>    <nonDerivativeTable>        <nonDerivativeTransaction>            <securityTitle>                <value>Common Stock</value>            </securityTitle>            <transactionDate>                <value>2012-03-13</value>            </transactionDate>            <transactionCoding>                <transactionFormType>4</transactionFormType>                <transactionCode>S</transactionCode>                <equitySwapInvolved>0</equitySwapInvolved>            </transactionCoding>            <transactionTimeliness>                <value></value>            </transactionTimeliness>            <transactionAmounts>                <transactionShares>                    <value>2156</value>                </transactionShares>                <transactionPricePerShare>                    <value>13.66</value>                    <footnoteId id="F1"/>                </transactionPricePerShare>                <transactionAcquiredDisposedCode>                    <value>D</value>                </transactionAcquiredDisposedCode>            </transactionAmounts>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>15254</value>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>D</value>                </directOrIndirectOwnership>            </ownershipNature>        </nonDerivativeTransaction>        <nonDerivativeHolding>            <securityTitle>                <value>Common Stock</value>            </securityTitle>            <postTransactionAmounts>                <sharesOwnedFollowingTransaction>                    <value>23162</value>                    <footnoteId id="F2"/>                </sharesOwnedFollowingTransaction>            </postTransactionAmounts>            <ownershipNature>                <directOrIndirectOwnership>                    <value>I</value>                </directOrIndirectOwnership>                <natureOfOwnership>                    <value>401(K)</value>                </natureOfOwnership>            </ownershipNature>        </nonDerivativeHolding>    </nonDerivativeTable>    <footnotes>        <footnote id="F1">All shares sold at $13.66.</footnote>        <footnote id="F2">Shares held in FSB 401(K) Savings Plan as of 03/15/2012.</footnote>    </footnotes>    <ownerSignature>        <signatureName>Signed by Russell A. Fleishman Under Power of Attorney by Jeoung Jin</signatureName>        <signatureDate>2012-03-15</signatureDate>    </ownerSignature></ownershipDocument>