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

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-03-15</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0000701345</issuerCik>
        <issuerName>US AIRWAYS GROUP INC</issuerName>
        <issuerTradingSymbol>LCC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001339906</rptOwnerCik>
            <rptOwnerName>Eastshore Aviation, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>W6390 CHALLENGER DRIVE, SUITE 203</rptOwnerStreet1>
            <rptOwnerStreet2>OUTAGAMIE AIRPORT</rptOwnerStreet2>
            <rptOwnerCity>APPLETON</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>54914</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001356382</rptOwnerCik>
            <rptOwnerName>Crowley Geoffrey T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>W6390 CHALLENGER DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 203, OUTAGAMIE AIRPORT</rptOwnerStreet2>
            <rptOwnerCity>APPLETON</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>54914</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001356383</rptOwnerCik>
            <rptOwnerName>Jordan William P</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>W6390 CHALLENGER DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 203, OUTAGAMIE AIRPORT</rptOwnerStreet2>
            <rptOwnerCity>APPLETON</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>54914</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001356395</rptOwnerCik>
            <rptOwnerName>Thompson Patrick J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>W6390 CHALLENGER DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 203, OUTAGAMIE AIRPORT</rptOwnerStreet2>
            <rptOwnerCity>APPLETON</rptOwnerCity>
            <rptOwnerState>WI</rptOwnerState>
            <rptOwnerZipCode>54914</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001339902</rptOwnerCik>
            <rptOwnerName>Bartlett Richard A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>520 MADISON AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>40TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001052172</rptOwnerCik>
            <rptOwnerName>SESLOWE JERRY M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>520 MADISON AVE</rptOwnerStreet1>
            <rptOwnerStreet2>40TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001013703</rptOwnerCik>
            <rptOwnerName>SHAW JOHN C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>520 MADISON AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>40TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2006-03-15</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1000000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>34.84</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7333333</value>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The transaction to which this Statement relates (the &quot;Transaction&quot;) is governed by the Securities Purchase Agreement, dated March 15, 2006, between Eastshore Aviation, LLC (&quot;Eastshore&quot;) and PAR Investment Partners, L.P.  The Transaction is scheduled to close on April 3, 2006.   Closing is subject to certain conditions, which are not within Eastshore's control.  Therefore, the sale of the securities described herein will not be deemed to occur unless and until such closing takes place.</footnote>
        <footnote id="F2">As a result of the consummation of the Transaction, Eastshore will own less than 10% of the issued and outstanding common stock of US Airways Group, Inc.  Therefore, none of the filers named below will be subject to Section 16 after consummation of the Transaction other than Richard A. Bartlett, who is a director of US Airways Group, Inc.</footnote>
        <footnote id="F3">These securities are owned by Eastshore, who is filing this report as a joint filer with Geoffrey T. Crowley (&quot;Crowley&quot;), William P. Jordan (&quot;Jordan&quot;), Patrick J. Thompson (&quot;Thompson&quot;), Richard A. Bartlett (&quot;Bartlett&quot;), Jerry M. Seslowe (&quot;Seslowe&quot;) and John C. Shaw (&quot;Shaw&quot;).   Each of Crowley, Jordan, Thompson, Bartlett, Seslowe and Shaw, by virtue of their status as directors, officers and/or members of Eastshore, may be deemed to have voting and dispositive power as to the shares held by Eastshore.  Each of Crowley, Jordan, Thompson, Bartlett, Seslowe and Shaw disclaim beneficial ownership in the shares owned by Eastshore, except to the extent of their pecuniary interest therein.  Information regarding the joint filers is attached hereto as Exhibit 99.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Geoffrey T. Crowley, Attorney-in-fact</signatureName>
        <signatureDate>2006-03-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
