Cover Page - shares
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3 Months Ended |
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Mar. 31, 2021 |
Apr. 14, 2021 |
| Cover [Abstract] |
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| Document Type |
10-Q
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| Document Quarterly Report |
true
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| Document Period End Date |
Mar. 31, 2021
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| Document Transition Report |
false
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| Entity File Number |
001-35186
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| Entity Registrant Name |
SPIRIT AIRLINES, INC.
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| Entity Incorporation, State or Country Code |
DE
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| Entity Tax Identification Number |
38-1747023
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| Entity Address, Address Line One |
2800 Executive Way
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| Entity Address, City or Town |
Miramar
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| Entity Address, State or Province |
FL
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| Entity Address, Postal Zip Code |
33025
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| City Area Code |
954
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| Local Phone Number |
447-7920
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| Title of 12(b) Security |
Common Stock, $0.0001 par value
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| Security Exchange Name |
NYSE
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| Trading Symbol |
SAVE
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| Entity Current Reporting Status |
Yes
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| Entity Interactive Data Current |
Yes
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| Entity Filer Category |
Large Accelerated Filer
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| Entity Small Business |
false
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| Entity Emerging Growth Company |
false
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| Entity Shell Company |
false
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| Entity Common Stock, Shares Outstanding (in shares) |
|
97,806,430
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| Amendment Flag |
false
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| Document Fiscal Year Focus |
2021
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| Document Fiscal Period Focus |
Q1
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| Entity Central Index Key |
0001498710
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| Current Fiscal Year End Date |
--12-31
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