-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 HKQCyWSmyZIEXwwJmQS7u10+/+5XFuly/h21VWu6b+4WNAiEslt5nIgX5hsTCHsZ
 nxGOsuRuC3WzHmZE5sdRDw==

<SEC-DOCUMENT>0001312456-11-000001.txt : 20110131
<SEC-HEADER>0001312456-11-000001.hdr.sgml : 20110131
<ACCEPTANCE-DATETIME>20110131175650
ACCESSION NUMBER:		0001312456-11-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110130
FILED AS OF DATE:		20110131
DATE AS OF CHANGE:		20110131

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Obrien Donna M
		CENTRAL INDEX KEY:			0001312456

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33013
		FILM NUMBER:		11560765

	MAIL ADDRESS:	
		STREET 1:		1979 MARCUS AVENUE, SUITE E140
		CITY:			LAKE SUCCESS
		STATE:			NY
		ZIP:			11042

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FLUSHING FINANCIAL CORP
		CENTRAL INDEX KEY:			0000923139
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
		IRS NUMBER:				113209278
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1206

	BUSINESS ADDRESS:	
		STREET 1:		1979 MARCUS AVENUE , SUITE E140
		CITY:			LAKE SUCCESS
		STATE:			NY
		ZIP:			11042
		BUSINESS PHONE:		718-961-5400

	MAIL ADDRESS:	
		STREET 1:		1979 MARCUS AVENUE, SUITE E140
		CITY:			LAKE SUCCESS
		STATE:			NY
		ZIP:			11042
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-01-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000923139</issuerCik>
        <issuerName>FLUSHING FINANCIAL CORP</issuerName>
        <issuerTradingSymbol>ffic</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001312456</rptOwnerCik>
            <rptOwnerName>Obrien Donna M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1979 MARCUS AVENUE, SUITE E140</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LAKE SUCCESS</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11042</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2011-01-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>3600</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>38637</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Grant of restricted stock units payable in common stock upon vesting.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Signed by Russell A. Fleishman Under Power of Attorney by Donna M. O'Brien</signatureName>
        <signatureDate>2011-01-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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