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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 GpVCqnxXwHaIsZSGV/UYy50+Ez7+hF/9aBlJ8Oj7NPGLbopfqkIgEFip9taANYgz
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<SEC-DOCUMENT>0001184055-04-000003.txt : 20040630
<SEC-HEADER>0001184055-04-000003.hdr.sgml : 20040630
<ACCEPTANCE-DATETIME>20040630215512
ACCESSION NUMBER:		0001184055-04-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040630
FILED AS OF DATE:		20040630

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			STEINBERG LEONARD
		CENTRAL INDEX KEY:			0001184055

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-28167
		FILM NUMBER:		04892811

	BUSINESS ADDRESS:	
		STREET 1:		600 TELEPHONE AVENUE
		STREET 2:		MS 65
		CITY:			ANCHORAGE
		STATE:			AK
		ZIP:			99503
		BUSINESS PHONE:		9072973000

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALASKA COMMUNICATIONS SYSTEMS GROUP INC
		CENTRAL INDEX KEY:			0001089511
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
		IRS NUMBER:				522126573
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		600 TELEPHONE AVENUE
		STREET 2:		-
		CITY:			ANCHORAGE
		STATE:			AK
		ZIP:			99503
		BUSINESS PHONE:		9072973000

	MAIL ADDRESS:	
		STREET 1:		600 TELEPHONE AVENUE
		STREET 2:		-
		CITY:			ANCHORAGE
		STATE:			AK
		ZIP:			99503

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALEC HOLDINGS INC
		DATE OF NAME CHANGE:	19990624
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-06-30</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001089511</issuerCik>
        <issuerName>ALASKA COMMUNICATIONS SYSTEMS GROUP INC</issuerName>
        <issuerTradingSymbol>ALSK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001184055</rptOwnerCik>
            <rptOwnerName>STEINBERG LEONARD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1></rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity></rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Gneral Counsel/Corporate Sec.</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Alaska Communications Group, Inc. Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-06-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>217.18</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>4.029</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2202.31</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Stock purchase under Alaska Communications Systems Group, Inc. Employee Stock Purchase Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Leonard Steinberg</signatureName>
        <signatureDate>2004-06-30</signatureDate>
    </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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