    <SEC-DOCUMENT>0000766421-25-000012-index.html : 20250423
    <SEC-HEADER>0000766421-25-000012.hdr.sgml : 20250423
    <ACCEPTANCE-DATETIME>20250423172146
    ACCESSION NUMBER:		0000766421-25-000012
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		26
    CONFORMED PERIOD OF REPORT:	20250423
    ITEM INFORMATION:		Results of Operations and Financial Condition
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20250423
    DATE AS OF CHANGE:		20250423

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ALASKA AIR GROUP, INC.
    		CENTRAL INDEX KEY:			0000766421
    		STANDARD INDUSTRIAL CLASSIFICATION:	AIR TRANSPORTATION, SCHEDULED [4512]
    		ORGANIZATION NAME:           	01 Energy & Transportation
    		EIN:				911292054
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-08957
    		FILM NUMBER:		25862752

    	BUSINESS ADDRESS:
    		STREET 1:		19300 INTERNATIONAL BOULEVARD
    		CITY:			SEATTLE
    		STATE:			WA
    		ZIP:			98188
    		BUSINESS PHONE:		206-392-5040

    	MAIL ADDRESS:
    		STREET 1:		19300 INTERNATIONAL BOULEVARD
    		CITY:			SEATTLE
    		STATE:			WA
    		ZIP:			98188

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	ALASKA AIR GROUP INC
    		DATE OF NAME CHANGE:	19920703
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>alk-20250423.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: alk-20250423.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>ex9914232025earningsrelease.htm
    <DESCRIPTION>FIRST QUARTER 2025 EARNINGS RELEASE
    <TEXT>
    Document 2 - file: ex9914232025earningsrelease.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.2
    <SEQUENCE>3
    <FILENAME>alksupplemental1q25.htm
    <DESCRIPTION>ALK SUPPLEMENTAL INFORMATION 1Q25
    <TEXT>
    Document 3 - file: alksupplemental1q25.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>alk-20250423.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 4 - file: alk-20250423.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>5
    <FILENAME>alk-20250423_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: alk-20250423_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>alk-20250423_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: alk-20250423_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>alaskaairgrouplogob03.jpg
    <TEXT>
    Document 7 - file: alaskaairgrouplogob03.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>alksupplemental1q25001.jpg
    <TEXT>
    Document 8 - file: alksupplemental1q25001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>alksupplemental1q25002.jpg
    <TEXT>
    Document 9 - file: alksupplemental1q25002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>alksupplemental1q25003.jpg
    <TEXT>
    Document 10 - file: alksupplemental1q25003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>alksupplemental1q25004.jpg
    <TEXT>
    Document 11 - file: alksupplemental1q25004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>alksupplemental1q25005.jpg
    <TEXT>
    Document 12 - file: alksupplemental1q25005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>alksupplemental1q25006.jpg
    <TEXT>
    Document 13 - file: alksupplemental1q25006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>alksupplemental1q25007.jpg
    <TEXT>
    Document 14 - file: alksupplemental1q25007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>alksupplemental1q25008.jpg
    <TEXT>
    Document 15 - file: alksupplemental1q25008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>alksupplemental1q25009.jpg
    <TEXT>
    Document 16 - file: alksupplemental1q25009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>alksupplemental1q25010.jpg
    <TEXT>
    Document 17 - file: alksupplemental1q25010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>19
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 19 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>20
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 20 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>21
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 21 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>22
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 22 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>24
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 24 - file: FilingSummary.html

    Document 24 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>26
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 26 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>27
    <FILENAME>0000766421-25-000012-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 27 - file: 0000766421-25-000012-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>28
    <FILENAME>alk-20250423_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 28 - file: alk-20250423_htm.html

    Document 28 - RAW XML: alk-20250423_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>