    <SEC-DOCUMENT>0000092380-24-000027-index.html : 20240206
    <SEC-HEADER>0000092380-24-000027.hdr.sgml : 20240206
    <ACCEPTANCE-DATETIME>20240206170957
    ACCESSION NUMBER:		0000092380-24-000027
    CONFORMED SUBMISSION TYPE:	10-K
    PUBLIC DOCUMENT COUNT:		309
    CONFORMED PERIOD OF REPORT:	20231231
    FILED AS OF DATE:		20240206
    DATE AS OF CHANGE:		20240206

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SOUTHWEST AIRLINES CO
    		CENTRAL INDEX KEY:			0000092380
    		STANDARD INDUSTRIAL CLASSIFICATION:	AIR TRANSPORTATION, SCHEDULED [4512]
    		ORGANIZATION NAME:           	01 Energy & Transportation
    		IRS NUMBER:				741563240
    		STATE OF INCORPORATION:			TX
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		10-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-07259
    		FILM NUMBER:		24601150

    	BUSINESS ADDRESS:
    		STREET 1:		2702 LOVE FIELD DR
    		STREET 2:		P O BOX 36611
    		CITY:			DALLAS
    		STATE:			TX
    		ZIP:			75235
    		BUSINESS PHONE:		2147924000

    	MAIL ADDRESS:
    		STREET 1:		PO BOX 36611
    		CITY:			DALLAS
    		STATE:			TX
    		ZIP:			75235-1611

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	AIR SOUTHWEST CO
    		DATE OF NAME CHANGE:	19760108
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>10-K
    <SEQUENCE>1
    <FILENAME>luv-20231231.htm
    <DESCRIPTION>FORM 10-K
    <TEXT>
    Document 1 - file: luv-20231231.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.2
    <SEQUENCE>2
    <FILENAME>exhibit32fourthamendedandr.htm
    <DESCRIPTION>EX-3.2 FOURTH AMENDED AND RESTATED BYLAWS OF THE COMPANY
    <TEXT>
    Document 2 - file: exhibit32fourthamendedandr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-4.5
    <SEQUENCE>3
    <FILENAME>exhibit45-descriptionofc.htm
    <DESCRIPTION>EX-4.5 DESCRIPTION OF COMMON STOCK
    <TEXT>
    Document 3 - file: exhibit45-descriptionofc.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.18(A)
    <SEQUENCE>4
    <FILENAME>exhibit1018aboeingsa-20e.htm
    <DESCRIPTION>EX-10.18(A) BOEING SUPPLEMENTAL AGREEMENT NO. 20
    <TEXT>
    Document 4 - file: exhibit1018aboeingsa-20e.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.18(B)
    <SEQUENCE>5
    <FILENAME>exhibit1018bboeingsa-21e.htm
    <DESCRIPTION>EX-10.18(B) BOEING SUPPLEMENTAL AGREEMENT NO. 21
    <TEXT>
    Document 5 - file: exhibit1018bboeingsa-21e.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.33
    <SEQUENCE>6
    <FILENAME>exhibit1033formofcareerinv.htm
    <DESCRIPTION>EX-10.33 FORM OF CAREER INVESTMENT CASH AWARD AND TERMS AND CONDITIONS
    <TEXT>
    Document 6 - file: exhibit1033formofcareerinv.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-21
    <SEQUENCE>7
    <FILENAME>luv-12312023xex21.htm
    <DESCRIPTION>EX-21 SUBSIDIARIES OF THE COMPANY
    <TEXT>
    Document 7 - file: luv-12312023xex21.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-23
    <SEQUENCE>8
    <FILENAME>luv-12312023xex23.htm
    <DESCRIPTION>CONSENT OF ERNST & YOUNG LLP, INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
    <TEXT>
    Document 8 - file: luv-12312023xex23.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-31.1
    <SEQUENCE>9
    <FILENAME>luv-12312023xex311.htm
    <DESCRIPTION>EX-31.1 CERTIFICATION OF CHIEF EXECUTIVE OFFICER
    <TEXT>
    Document 9 - file: luv-12312023xex311.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-31.2
    <SEQUENCE>10
    <FILENAME>luv-12312023xex312.htm
    <DESCRIPTION>EX-31.2 CERTIFICATION OF CHIEF FINANCIAL OFFICER
    <TEXT>
    Document 10 - file: luv-12312023xex312.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-32
    <SEQUENCE>11
    <FILENAME>luv-12312023xex32.htm
    <DESCRIPTION>EX-32 CERTIFICATION OF CEO AND CFO
    <TEXT>
    Document 11 - file: luv-12312023xex32.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-97.1
    <SEQUENCE>12
    <FILENAME>exhibit971amendedandrest.htm
    <DESCRIPTION>EX-97.1 SOUTHWEST AIRLINES CO. CLAWBACK POLICY
    <TEXT>
    Document 12 - file: exhibit971amendedandrest.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>13
    <FILENAME>luv-20231231.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 13 - file: luv-20231231.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.CAL
    <SEQUENCE>14
    <FILENAME>luv-20231231_cal.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
    <TEXT>
    Document 14 - file: luv-20231231_cal.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>15
    <FILENAME>luv-20231231_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 15 - file: luv-20231231_def.xml

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    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>16
    <FILENAME>luv-20231231_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 16 - file: luv-20231231_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>17
    <FILENAME>luv-20231231_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 17 - file: luv-20231231_pre.xml

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>exhibit1018aboeingsa-20e001.jpg
    <TEXT>
    Document 18 - file: exhibit1018aboeingsa-20e001.jpg

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    <DOCUMENT>
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    <FILENAME>exhibit1018aboeingsa-20e002.jpg
    <TEXT>
    Document 19 - file: exhibit1018aboeingsa-20e002.jpg

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    <DOCUMENT>
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    <FILENAME>exhibit1018aboeingsa-20e003.jpg
    <TEXT>
    Document 20 - file: exhibit1018aboeingsa-20e003.jpg

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    <DOCUMENT>
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    <FILENAME>exhibit1018aboeingsa-20e004.jpg
    <TEXT>
    Document 21 - file: exhibit1018aboeingsa-20e004.jpg

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    <DOCUMENT>
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    <FILENAME>exhibit1018aboeingsa-20e005.jpg
    <TEXT>
    Document 22 - file: exhibit1018aboeingsa-20e005.jpg

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    <DOCUMENT>
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    <FILENAME>exhibit1018aboeingsa-20e006.jpg
    <TEXT>
    Document 23 - file: exhibit1018aboeingsa-20e006.jpg

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    <DOCUMENT>
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    <FILENAME>exhibit1018aboeingsa-20e007.jpg
    <TEXT>
    Document 24 - file: exhibit1018aboeingsa-20e007.jpg

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    <DOCUMENT>
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    <SEQUENCE>25
    <FILENAME>exhibit1018aboeingsa-20e008.jpg
    <TEXT>
    Document 25 - file: exhibit1018aboeingsa-20e008.jpg

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    <DOCUMENT>
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    <SEQUENCE>26
    <FILENAME>exhibit1018aboeingsa-20e009.jpg
    <TEXT>
    Document 26 - file: exhibit1018aboeingsa-20e009.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>exhibit1018aboeingsa-20e010.jpg
    <TEXT>
    Document 27 - file: exhibit1018aboeingsa-20e010.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>exhibit1018aboeingsa-20e011.jpg
    <TEXT>
    Document 28 - file: exhibit1018aboeingsa-20e011.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>exhibit1018aboeingsa-20e012.jpg
    <TEXT>
    Document 29 - file: exhibit1018aboeingsa-20e012.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>exhibit1018aboeingsa-20e013.jpg
    <TEXT>
    Document 30 - file: exhibit1018aboeingsa-20e013.jpg

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    <DOCUMENT>
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    <SEQUENCE>31
    <FILENAME>exhibit1018aboeingsa-20e014.jpg
    <TEXT>
    Document 31 - file: exhibit1018aboeingsa-20e014.jpg

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    <DOCUMENT>
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    <SEQUENCE>32
    <FILENAME>exhibit1018aboeingsa-20e015.jpg
    <TEXT>
    Document 32 - file: exhibit1018aboeingsa-20e015.jpg

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    <DOCUMENT>
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    <SEQUENCE>33
    <FILENAME>exhibit1018aboeingsa-20e016.jpg
    <TEXT>
    Document 33 - file: exhibit1018aboeingsa-20e016.jpg

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    <DOCUMENT>
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    <FILENAME>exhibit1018aboeingsa-20e017.jpg
    <TEXT>
    Document 34 - file: exhibit1018aboeingsa-20e017.jpg

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    <DOCUMENT>
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    <SEQUENCE>35
    <FILENAME>exhibit1018aboeingsa-20e018.jpg
    <TEXT>
    Document 35 - file: exhibit1018aboeingsa-20e018.jpg

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    <DOCUMENT>
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    <SEQUENCE>36
    <FILENAME>exhibit1018aboeingsa-20e019.jpg
    <TEXT>
    Document 36 - file: exhibit1018aboeingsa-20e019.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>exhibit1018aboeingsa-20e020.jpg
    <TEXT>
    Document 37 - file: exhibit1018aboeingsa-20e020.jpg

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    <DOCUMENT>
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    <SEQUENCE>38
    <FILENAME>exhibit1018aboeingsa-20e021.jpg
    <TEXT>
    Document 38 - file: exhibit1018aboeingsa-20e021.jpg

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    <DOCUMENT>
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    <TEXT>
    Document 39 - file: exhibit1018aboeingsa-20e022.jpg

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    <DOCUMENT>
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    <SEQUENCE>40
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    <TEXT>
    Document 40 - file: exhibit1018aboeingsa-20e023.jpg

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    <DOCUMENT>
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    Document 41 - file: exhibit1018aboeingsa-20e024.jpg

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    <DOCUMENT>
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    Document 42 - file: exhibit1018aboeingsa-20e025.jpg

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    <DOCUMENT>
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    Document 43 - file: exhibit1018aboeingsa-20e026.jpg

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    <DOCUMENT>
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    Document 44 - file: exhibit1018aboeingsa-20e027.jpg

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    <DOCUMENT>
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    Document 45 - file: exhibit1018aboeingsa-20e028.jpg

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    <DOCUMENT>
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    Document 46 - file: exhibit1018aboeingsa-20e029.jpg

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    <DOCUMENT>
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    Document 47 - file: exhibit1018aboeingsa-20e030.jpg

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    <DOCUMENT>
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    Document 48 - file: exhibit1018aboeingsa-20e031.jpg

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    <DOCUMENT>
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    Document 49 - file: exhibit1018aboeingsa-20e032.jpg

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    <DOCUMENT>
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    Document 50 - file: exhibit1018aboeingsa-20e033.jpg

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    <DOCUMENT>
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    <SEQUENCE>51
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    Document 51 - file: exhibit1018aboeingsa-20e034.jpg

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    <DOCUMENT>
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    <DOCUMENT>
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    <SEQUENCE>53
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    <DOCUMENT>
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    <SEQUENCE>54
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    <DOCUMENT>
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    <SEQUENCE>55
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    <DOCUMENT>
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    <SEQUENCE>56
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    Document 56 - file: exhibit1018aboeingsa-20e039.jpg

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    <DOCUMENT>
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    <SEQUENCE>57
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    Document 57 - file: exhibit1018aboeingsa-20e040.jpg

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    <SEQUENCE>58
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    Document 58 - file: exhibit1018aboeingsa-20e041.jpg

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    <DOCUMENT>
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    <SEQUENCE>59
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    <DOCUMENT>
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    <SEQUENCE>70
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