    <SEC-DOCUMENT>0001362468-22-000038-index.html : 20220728
    <SEC-HEADER>0001362468-22-000038.hdr.sgml : 20220728
    <ACCEPTANCE-DATETIME>20220728161633
    ACCESSION NUMBER:		0001362468-22-000038
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		67
    CONFORMED PERIOD OF REPORT:	20220725
    ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20220728
    DATE AS OF CHANGE:		20220728

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Allegiant Travel CO
    		CENTRAL INDEX KEY:			0001362468
    		STANDARD INDUSTRIAL CLASSIFICATION:	AIR TRANSPORTATION, SCHEDULED [4512]
    		IRS NUMBER:				204745737
    		STATE OF INCORPORATION:			NV
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-33166
    		FILM NUMBER:		221115411

    	BUSINESS ADDRESS:
    		STREET 1:		1201 N. TOWN CENTER DRIVE
    		CITY:			LAS VEGAS
    		STATE:			NV
    		ZIP:			89144
    		BUSINESS PHONE:		702-851-7300

    	MAIL ADDRESS:
    		STREET 1:		1201 N. TOWN CENTER DRIVE
    		CITY:			LAS VEGAS
    		STATE:			NV
    		ZIP:			89144
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>algt-20220725.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: algt-20220725.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>by-lawsamendmentorgan1f1.htm
    <DESCRIPTION>EX-3.1
    <TEXT>
    Document 2 - file: by-lawsamendmentorgan1f1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.2
    <SEQUENCE>3
    <FILENAME>by-lawsamendmentorganiza.htm
    <DESCRIPTION>EX-3.2
    <TEXT>
    Document 3 - file: by-lawsamendmentorganiza.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>algt-20220725.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 4 - file: algt-20220725.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>5
    <FILENAME>algt-20220725_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: algt-20220725_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>algt-20220725_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: algt-20220725_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>algt-20220725_g1.jpg
    <TEXT>
    Document 7 - file: algt-20220725_g1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>by-lawsamendmentorgan1f1001.jpg
    <TEXT>
    Document 8 - file: by-lawsamendmentorgan1f1001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>by-lawsamendmentorgan1f1002.jpg
    <TEXT>
    Document 9 - file: by-lawsamendmentorgan1f1002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>by-lawsamendmentorgan1f1003.jpg
    <TEXT>
    Document 10 - file: by-lawsamendmentorgan1f1003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>by-lawsamendmentorgan1f1004.jpg
    <TEXT>
    Document 11 - file: by-lawsamendmentorgan1f1004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>by-lawsamendmentorgan1f1005.jpg
    <TEXT>
    Document 12 - file: by-lawsamendmentorgan1f1005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>by-lawsamendmentorgan1f1006.jpg
    <TEXT>
    Document 13 - file: by-lawsamendmentorgan1f1006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>by-lawsamendmentorgan1f1007.jpg
    <TEXT>
    Document 14 - file: by-lawsamendmentorgan1f1007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>by-lawsamendmentorgan1f1008.jpg
    <TEXT>
    Document 15 - file: by-lawsamendmentorgan1f1008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>by-lawsamendmentorgan1f1009.jpg
    <TEXT>
    Document 16 - file: by-lawsamendmentorgan1f1009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>by-lawsamendmentorgan1f1010.jpg
    <TEXT>
    Document 17 - file: by-lawsamendmentorgan1f1010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>by-lawsamendmentorgan1f1011.jpg
    <TEXT>
    Document 18 - file: by-lawsamendmentorgan1f1011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>by-lawsamendmentorgan1f1012.jpg
    <TEXT>
    Document 19 - file: by-lawsamendmentorgan1f1012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>by-lawsamendmentorgan1f1013.jpg
    <TEXT>
    Document 20 - file: by-lawsamendmentorgan1f1013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>by-lawsamendmentorgan1f1014.jpg
    <TEXT>
    Document 21 - file: by-lawsamendmentorgan1f1014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>by-lawsamendmentorgan1f1015.jpg
    <TEXT>
    Document 22 - file: by-lawsamendmentorgan1f1015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>23
    <FILENAME>by-lawsamendmentorgan1f1016.jpg
    <TEXT>
    Document 23 - file: by-lawsamendmentorgan1f1016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>24
    <FILENAME>by-lawsamendmentorgan1f1017.jpg
    <TEXT>
    Document 24 - file: by-lawsamendmentorgan1f1017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>25
    <FILENAME>by-lawsamendmentorgan1f1018.jpg
    <TEXT>
    Document 25 - file: by-lawsamendmentorgan1f1018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>26
    <FILENAME>by-lawsamendmentorgan1f1019.jpg
    <TEXT>
    Document 26 - file: by-lawsamendmentorgan1f1019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>27
    <FILENAME>by-lawsamendmentorgan1f1020.jpg
    <TEXT>
    Document 27 - file: by-lawsamendmentorgan1f1020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>by-lawsamendmentorgan1f1021.jpg
    <TEXT>
    Document 28 - file: by-lawsamendmentorgan1f1021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>29
    <FILENAME>by-lawsamendmentorgan1f1022.jpg
    <TEXT>
    Document 29 - file: by-lawsamendmentorgan1f1022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>30
    <FILENAME>by-lawsamendmentorgan1f1023.jpg
    <TEXT>
    Document 30 - file: by-lawsamendmentorgan1f1023.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>by-lawsamendmentorgan1f1024.jpg
    <TEXT>
    Document 31 - file: by-lawsamendmentorgan1f1024.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>by-lawsamendmentorgan1f1025.jpg
    <TEXT>
    Document 32 - file: by-lawsamendmentorgan1f1025.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>by-lawsamendmentorgan1f1026.jpg
    <TEXT>
    Document 33 - file: by-lawsamendmentorgan1f1026.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>by-lawsamendmentorganiza001.jpg
    <TEXT>
    Document 34 - file: by-lawsamendmentorganiza001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>35
    <FILENAME>by-lawsamendmentorganiza002.jpg
    <TEXT>
    Document 35 - file: by-lawsamendmentorganiza002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>36
    <FILENAME>by-lawsamendmentorganiza003.jpg
    <TEXT>
    Document 36 - file: by-lawsamendmentorganiza003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>by-lawsamendmentorganiza004.jpg
    <TEXT>
    Document 37 - file: by-lawsamendmentorganiza004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>38
    <FILENAME>by-lawsamendmentorganiza005.jpg
    <TEXT>
    Document 38 - file: by-lawsamendmentorganiza005.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>39
    <FILENAME>by-lawsamendmentorganiza006.jpg
    <TEXT>
    Document 39 - file: by-lawsamendmentorganiza006.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>40
    <FILENAME>by-lawsamendmentorganiza007.jpg
    <TEXT>
    Document 40 - file: by-lawsamendmentorganiza007.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>41
    <FILENAME>by-lawsamendmentorganiza008.jpg
    <TEXT>
    Document 41 - file: by-lawsamendmentorganiza008.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>42
    <FILENAME>by-lawsamendmentorganiza009.jpg
    <TEXT>
    Document 42 - file: by-lawsamendmentorganiza009.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>43
    <FILENAME>by-lawsamendmentorganiza010.jpg
    <TEXT>
    Document 43 - file: by-lawsamendmentorganiza010.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>44
    <FILENAME>by-lawsamendmentorganiza011.jpg
    <TEXT>
    Document 44 - file: by-lawsamendmentorganiza011.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>45
    <FILENAME>by-lawsamendmentorganiza012.jpg
    <TEXT>
    Document 45 - file: by-lawsamendmentorganiza012.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>46
    <FILENAME>by-lawsamendmentorganiza013.jpg
    <TEXT>
    Document 46 - file: by-lawsamendmentorganiza013.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>47
    <FILENAME>by-lawsamendmentorganiza014.jpg
    <TEXT>
    Document 47 - file: by-lawsamendmentorganiza014.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>48
    <FILENAME>by-lawsamendmentorganiza015.jpg
    <TEXT>
    Document 48 - file: by-lawsamendmentorganiza015.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>49
    <FILENAME>by-lawsamendmentorganiza016.jpg
    <TEXT>
    Document 49 - file: by-lawsamendmentorganiza016.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>50
    <FILENAME>by-lawsamendmentorganiza017.jpg
    <TEXT>
    Document 50 - file: by-lawsamendmentorganiza017.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>51
    <FILENAME>by-lawsamendmentorganiza018.jpg
    <TEXT>
    Document 51 - file: by-lawsamendmentorganiza018.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>52
    <FILENAME>by-lawsamendmentorganiza019.jpg
    <TEXT>
    Document 52 - file: by-lawsamendmentorganiza019.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>53
    <FILENAME>by-lawsamendmentorganiza020.jpg
    <TEXT>
    Document 53 - file: by-lawsamendmentorganiza020.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>54
    <FILENAME>by-lawsamendmentorganiza021.jpg
    <TEXT>
    Document 54 - file: by-lawsamendmentorganiza021.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>55
    <FILENAME>by-lawsamendmentorganiza022.jpg
    <TEXT>
    Document 55 - file: by-lawsamendmentorganiza022.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>56
    <FILENAME>by-lawsamendmentorganiza023.jpg
    <TEXT>
    Document 56 - file: by-lawsamendmentorganiza023.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>57
    <FILENAME>by-lawsamendmentorganiza024.jpg
    <TEXT>
    Document 57 - file: by-lawsamendmentorganiza024.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>58
    <FILENAME>by-lawsamendmentorganiza025.jpg
    <TEXT>
    Document 58 - file: by-lawsamendmentorganiza025.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>59
    <FILENAME>by-lawsamendmentorganiza026.jpg
    <TEXT>
    Document 59 - file: by-lawsamendmentorganiza026.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>60
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 60 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>61
    <FILENAME>algt-20220725_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 61 - file: algt-20220725_htm.html

    Document 61 - RAW XML: algt-20220725_htm.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>62
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 62 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>63
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 63 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>64
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 64 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>65
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 65 - file: FilingSummary.html

    Document 65 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>68
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 68 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>69
    <FILENAME>0001362468-22-000038-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 69 - file: 0001362468-22-000038-xbrl.zip

    </DOCUMENT>
    </SEC-DOCUMENT>