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    <schemaVersion>X0306</schemaVersion>

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    <periodOfReport>2014-06-04</periodOfReport>

    <notSubjectToSection16>false</notSubjectToSection16>

    <issuer>
        <issuerCik>0000766421</issuerCik>
        <issuerName>ALASKA AIR GROUP, INC.</issuerName>
        <issuerTradingSymbol>ALK</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001188835</rptOwnerCik>
            <rptOwnerName>TILDEN BRADLEY D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>19300 INTERNATIONAL BLVD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SEATTLE</rptOwnerCity>
            <rptOwnerState>WA</rptOwnerState>
            <rptOwnerZipCode>98188</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>CHAIRMAN, PRESIDENT AND CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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            </securityTitle>
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                    <value>15473</value>
                    <footnoteId id="F2"/>
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            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>ESOP TRUST</value>
                </natureOfOwnership>
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            <securityTitle>
                <value>COMMON STOCK</value>
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                <equitySwapInvolved>false</equitySwapInvolved>
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                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
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            <transactionDate>
                <value>2014-08-13</value>
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                <transactionPricePerShare>
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                </transactionAcquiredDisposedCode>
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                    <value>222388</value>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
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            <transactionDate>
                <value>2014-11-07</value>
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                    <value>1855</value>
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                <sharesOwnedFollowingTransaction>
                    <value>220533</value>
                </sharesOwnedFollowingTransaction>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
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            <transactionDate>
                <value>2014-11-10</value>
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            <deemedExecutionDate></deemedExecutionDate>
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                <transactionFormType>5</transactionFormType>
                <transactionCode>G</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
                    <value>464</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
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                    <value>220069</value>
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            <ownershipNature>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
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            <transactionDate>
                <value>2014-11-13</value>
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                <equitySwapInvolved>false</equitySwapInvolved>
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                    <value>D</value>
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                <sharesOwnedFollowingTransaction>
                    <value>219699</value>
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                <directOrIndirectOwnership>
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        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
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            <transactionDate>
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                <equitySwapInvolved>false</equitySwapInvolved>
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                <transactionShares>
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                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
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                <sharesOwnedFollowingTransaction>
                    <value>218809</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2015-01-29</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>G</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>365</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>218444</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2015-02-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
                <footnoteId id="F4"/>
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            <transactionAmounts>
                <transactionShares>
                    <value>158648</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>377092</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>RESTRICTED STOCK UNIT</value>
                <footnoteId id="F6"/>
            </securityTitle>
            <transactionDate>
                <value>2015-02-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
                <footnoteId id="F7"/>
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            <transactionAmounts>
                <transactionShares>
                    <value>6000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>58380</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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            <securityTitle>
                <value>COMMON STOCK</value>
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            <transactionDate>
                <value>2015-02-10</value>
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            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
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            <transactionAmounts>
                <transactionShares>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>310539</value>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>EMPLOYEE STOCK OPTION (RT TO BUY)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>65.37</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2015-02-10</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>13600</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2016-02-10</value>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2025-02-10</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>13600</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">COMMON SHARES HELD IN THE ALASKA AIR GROUP INC. EMPLOYEE STOCK OWNERSHIP 401(K) PLAN TRUST AS OF 12/31/14.</footnote>
        <footnote id="F2">TOTAL SHARES BENEFICIALLY HELD HAVE BEEN ADJUSTED TO GIVE EFFECT TO THE 2-FOR-1 STOCK SPLIT THAT OCCURRED ON 7/9/2014.</footnote>
        <footnote id="F3">TOTAL SHARES BENEFICIALLY HELD PRIOR 7/9/2014 HAVE BEEN ADJUSTED TO GIVE EFFECT TO THE 2-FOR-1 STOCK SPLIT THAT OCCURRED ON 7/9/2014.</footnote>
        <footnote id="F4">ALK COMMON SHARES ISSUED UPON ATTAINING PERFORMANCE GOALS SET FOR A THREE-YEAR PERIOD ENDING 12/31/2014, IN ACCORDANCE WITH THE TERMS OF PERFORMANCE STOCK UNITS GRANTED ON 2/14/2012 UNDER THE ISSUER'S 2008 PERFORMANCE INCENTIVE PLAN; PER APPROVAL BY THE BOARD'S COMPENSATION COMMITTEE ON 2/10/2015.</footnote>
        <footnote id="F5">OPTIONS GRANTED VEST IN 25% INCREMENTS OVER FOUR YEARS (02/10/2016, 02/10/2017, 02/10/2018 AND 02/10/2019).</footnote>
        <footnote id="F6">TOTAL UNVESTED RESTRICTED STOCK UNITS REPORTED PRIOR TO 7/9/014 HAVE BEEN ADJUSTED TO GIVE EFFECT TO THE 2-FOR-1 STOCK SPLIT THAT OCCURRED ON 7/9/2014.</footnote>
        <footnote id="F7">STOCK UNITS AWARDED UNDER THE ALASKA AIR GROUP, INC. 2008 PERFORMANCE INCENTIVE PLAN ON 2/10/2015 WILL CLIFF VEST ON 2/10/2018. UNITS ARE NO LONGER SUBJECT TO FORFEITURE.</footnote>
        <footnote id="F8">COMMON SHARES FORFEITED TO COVER PAYROLL TAXES UPON VESTING OF PERFORMANCE STOCK UNITS ON 02/10/2015. AMOUNT PROVIDED IN COLUMN 4 REPRESENTS THE FMV OF THE SHARES ON THE DATE OF FORFEITURE.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/S/ JEANNE E. GAMMON, ATTORNEY IN FACT FOR BRADLEY D. TILDEN</signatureName>
        <signatureDate>2015-02-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
