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Nature of Operations and Summary of Significant Accounting Policies - Aircraft Fleet (Details) | 12 Months Ended
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Dec. 31, 2023 aircraft
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of daily departures | 1,850
Number of aircraft held by entity | 603
E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 237
E175 | Minimum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 65
E175 | Maximum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 76
CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 49
CRJ 900 | Minimum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 65
CRJ 900 | Maximum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 76
CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 167
CRJ 700 | Minimum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 65
CRJ 700 | Maximum |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of seats on aircraft | 76
CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 150
Number of seats on aircraft | 50
United |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 198
Percentage of aggregate capacity operated | 40.80%
United | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 90
United | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 19
United | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 89
Delta |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 135
Percentage of aggregate capacity operated | 27.80%
Delta | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 85
Delta | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 41
Delta | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 9
American |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 110
Percentage of aggregate capacity operated | 22.70%
American | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 20
American | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 90
Alaska |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 42
Percentage of aggregate capacity operated | 8.70%
Alaska | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 42
Aircraft in schedule service or under contract |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 485
Aircraft in schedule service or under contract | E175 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 237
Aircraft in schedule service or under contract | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 41
Aircraft in schedule service or under contract | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 118
Aircraft in schedule service or under contract | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 89
SWC |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 16
SWC | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 16
Number of seats on aircraft | 30
Leased to third parties |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 40
Leased to third parties | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 5
Leased to third parties | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 35
Other |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 62
Other | CRJ 900 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 3
Other | CRJ 700 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 14
Other | CRJ 200 |
Nature of Operations and Summary of Significant Accounting Policies [Line Items] |
Number of aircraft held by entity | 45

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