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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-12-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001140859</issuerCik>
        <issuerName>AMERISOURCEBERGEN CORP</issuerName>
        <issuerTradingSymbol>ABC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001618921</rptOwnerCik>
            <rptOwnerName>Walgreens Boots Alliance, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>108 WILMOT ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DEERFIELD</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60015</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001669077</rptOwnerCik>
            <rptOwnerName>Walgreens Boots Alliance Holdings LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O 108 WILMOT ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DEERFIELD</rptOwnerCity>
            <rptOwnerState></rptOwnerState>
            <rptOwnerZipCode>60015</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</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
            </securityTitle>
            <transactionDate>
                <value>2022-12-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F4"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>5961534</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>165.08</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>33659180</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">As previously disclosed, including in the Schedule 13D filed by Walgreen Co. (&quot;Walgreens&quot;) and others on April 15, 2014, as amended on January 16, 2015, January 25, 2016, March 22, 2016, August 25, 2016, November 4, 2016, January 6, 2021, June 3, 2021, May 12, 2022, August 4, 2022 and November 9, 2022, the Form 8-K filed by the Issuer on March 20, 2013, the Form 8-K filed by Walgreens on March 20, 2013, the Form 8-K filed by Walgreens on June 4, 2021 and the Form 8-K filed by the Issuer on June 2, 2021, the shares referenced in this Form 4 were acquired in accordance with the Framework Agreement, dated as of March 18, 2013 among Walgreens, Alliance Boots GmbH and the Issuer (the &quot;Framework Agreement&quot;).</footnote>
        <footnote id="F2">These shares were held by Walgreens Boots Alliance Holdings LLC (&quot;WBA Holdings&quot;), an indirect wholly owned subsidiary of the Reporting Person.</footnote>
        <footnote id="F3">As described in the Schedule 13D, as amended, WBA Investments, Inc., a direct wholly-owned subsidiary of the Reporting Person and the sole member of WBA Holdings, may also be deemed to beneficially own the securities reported in this Form 4.</footnote>
        <footnote id="F4">Represents sale pursuant to Rule 144 (4,750,000 shares) and a sale in private transaction to the Issuer (1,211,534 shares), in each case, by WBA Holdings.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Joseph B. Amsbary, Senior Vice President and Corporate Secretary of Walgreens</signatureName>
        <signatureDate>2022-12-12</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Joseph B. Amsbary, Senior Vice President and Secretary of WBA Holdings</signatureName>
        <signatureDate>2022-12-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
