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Flying Agreements Revenue and Lease, Airport Services and Other Revenues (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 USD ($) aircraft | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($)
Agreements with other airlines |  |  |
Percentage of ASMs flown under fixed-fee arrangements | 88.80% | 86.60% |
Percentage of ASMs flown under pro-rate arrangements | 11.20% | 13.40% |
Rental income under operating leases |  |  |
Operating lease revenue | $ 16,555 | $ 14,950 |
Total operating revenues | 735,152 | 534,555 |
Future minimum rental income |  |  |
April 2022 through December 2022 | 34,054 |  |
2023 | 44,677 |  |
2024 | 42,593 |  |
2025 | 39,145 |  |
2026 | 34,516 |  |
Thereafter | 120,636 |  |
Total | 315,621 |  |
Deferred revenue recognized | 7,500 |  |
Unbilled revenue recognized | 3,600 |  |
Deferred revenue | 96,400 | 21,200 | $ 103,900
Deferred revenue in other current liabilities | 33,000 |  | 24,500
Deferred revenue in other long-term liabilities | 63,400 |  | 79,400
Property and equipment and related assets | 5,528,821 |  | 5,498,599
Gross receivables current | 89,400 |  |
Gross receivables Non-current | 232,100 |  |
Credit loss reserve | 42,100 |  | 42,000
Increase in credit loss reserves | 100 |  |
Other Noncurrent Assets |  |  |
Future minimum rental income |  |  |
Unbilled revenue | $ 12,000 |  | $ 8,400
Aircraft in schedule service or under contract |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 513 |  |
United |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 220 |  |
Delta |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 149 |  |
American |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 108 |  |
Jet aircraft and spare engines leased to third parties |  |  |
Future minimum rental income |  |  |
Property and equipment and related assets | $ 246,900 |  |
CRJ 200 | United | United Express Agreements |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 70 |  |
CRJ 200 | United | United Express Prorate Agreement |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 41 |  |
Agreement term | 120 days |  |
CRJ 200 | Delta | Delta Capacity Purchase Agreement |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 9 |  |
CRJ 200 | Delta | Delta Connection Prorate Agreement |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 20 |  |
Agreement term | 30 days |  |
CRJ 700 | United | United Express Agreements |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 19 |  |
CRJ 700 | Delta | Delta Connection Agreements |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 5 |  |
CRJ 700 | American |  |  |
Future minimum rental income |  |  |
Number of aircraft under purchase agreement | aircraft | 11 |  |
CRJ 700 | American | American Capacity Purchase Agreement |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 90 |  |
CRJ 900 | Delta | Delta Connection Agreements |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 44 |  |
E175 |  |  |
Future minimum rental income |  |  |
Number of aircraft under purchase agreement | aircraft | 25 |  |
E175 | Sky West Airlines Inc. | Delta Capacity Purchase Agreement |  |  |
Future minimum rental income |  |  |
Number of aircraft under purchase agreement | aircraft | 16 |  |
Number of aircraft to be placed by 2022 | aircraft | 16 |  |
E175 | Sky West Airlines Inc. | Alaska Capacity Purchase Agreement |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 36 |  |
Number of aircraft under purchase agreement | aircraft | 7 |  |
E175 | United | United Express Agreements |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 90 |  |
E175 | Delta | Delta Connection Agreements |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 71 |  |
E175 | American |  |  |
Future minimum rental income |  |  |
Number of aircraft under purchase agreement | aircraft | 2 |  |
E175 | American | American Capacity Purchase Agreement |  |  |
Future minimum rental income |  |  |
Number of aircraft | aircraft | 18 |  |
Flying agreements |  |  |
Rental income under operating leases |  |  |
Total operating revenues | $ 708,063 | 511,191 |
Flight operations |  |  |
Rental income under operating leases |  |  |
Total operating revenues | 348,474 | 211,052 |
Aircraft lease and fixed revenue |  |  |
Rental income under operating leases |  |  |
Total operating revenues | 280,419 | 231,491 |
Prorate agreements |  |  |
Rental income under operating leases |  |  |
Total operating revenues | 79,170 | 68,648 |
Airport customer service and other revenue |  |  |
Rental income under operating leases |  |  |
Total operating revenues | 10,534 | 8,414 |
Lease, airport services and other. |  |  |
Rental income under operating leases |  |  |
Total operating revenues | $ 27,089 | $ 23,364 |

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