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Flying Agreements Revenue and Lease, Airport Services and Other Revenues (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2020
Agreements with other airlines |
Schedule of future minimum rental payments for operating leases | ​
​ | ​ | ​ | ​ | ​
April 2020 through December 2020 |  | $ | 75,137 |
2021 | ​ |  | 85,409 | ​
2022 | ​ |  | 75,776 | ​
2023 | ​ |  | 69,623 | ​
2024 | ​ |  | 28,320 | ​
Thereafter | ​ |  | 100,234 | ​
​ | ​ | $ | 434,499 | ​
Schedule of revenue by type | The following table represents the Company’s flying agreements revenue by type for the three-month periods ended March 31, 2020 and 2019 (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the three months ended March 31, | ​ | ​
​ |  | 2020 |  | 2019 | ​ | ​
Capacity purchase agreements revenue: flight operations |  | $ | 366,409 |  | $ | 386,545 |  | ​
Capacity purchase agreements revenue: aircraft lease revenue | ​ | ​ | 242,734 | ​ | ​ | 207,381 | ​ | ​
Prorate agreements revenue | ​ |  | 100,351 | ​ |  | 106,075 | ​ | ​
Flying agreements revenue |  | $ | 709,494 |  | $ | 700,001 |  |
Schedule of details of agreements with other airlines | ​ The following table summarizes the significant provisions of each code-share agreement SkyWest Airlines has with each major airline partner: ​
|  |  | ​ |  |  |
Delta Connection Agreements
Agreement |  | Aircraft type |  | Number of Aircraft |  | Term / Termination Dates
Delta Connection Agreement (capacity purchase agreement) | ​ | • CRJ 200 • CRJ 700 • CRJ 900 • E175 | ​ | 55 8 43 62 | ​ | • Individual aircraft have scheduled removal dates from 2020 to 2029
Delta Connection Prorate Agreement (prorate arrangement) | ​ | • CRJ 200 | ​ | 27 | ​ | • Terminable with 30-day notice
​
United Express Agreements
Agreement |  | Aircraft type |  | Number of Aircraft |  | Term / Termination Dates
United Express Agreements (capacity purchase agreement) | ​ | • CRJ 200 • CRJ 700 • E175 | ​ | 70 19 69 | ​ | • Individual aircraft have scheduled removal dates from 2022 to 2029
United Express Prorate Agreement (prorate arrangement) | ​ | • CRJ 200 | ​ | 31 | ​ | • Terminable with 120-day notice
​
​ | ​ | ​ | ​ | ​ | ​ | ​
American Agreements
Agreement |  | Aircraft type |  | Number of Aircraft |  | Term / Termination Dates
American Agreement (capacity purchase agreement) | ​ | • CRJ 700 | ​ | 61 | ​ | • Individual aircraft have scheduled removal dates from 2022 to 2025
American Prorate Agreement (prorate arrangement) | ​ | • CRJ 200 | ​ | 7 | ​ | • Terminable with 120-day notice
​
Alaska Capacity Purchase Agreement
Agreement |  | Aircraft type |  | Number of Aircraft |  | Term / Termination Dates
Alaska Agreement (capacity purchase agreement) | ​ | • E175 | ​ | 32 | ​ | • Individual aircraft have scheduled removal dates from 2027 to 2030
Schedule of changes in allowance for credit losses | ​
​ | ​ | ​ | ​ | ​
​ |  | Allowance for |
​ | ​ | Credit Losses |
Balance at January 1, 2020 | ​ | $ | 15,388 | ​
Additions to credit loss reserve | ​ |  | 3,756 | ​
Write-offs charged against the allowance | ​ |  | — | ​
Balance at March 31, 2020 | ​ | $ | 19,144 | ​
Aircraft |
Agreements with other airlines |
Schedule of future minimum rental payments for operating leases |
​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​
April 2020 through December 2020 |  | $ | 23,484 |
2021 | ​ |  | 27,849 | ​
2022 | ​ |  | 27,606 | ​
2023 | ​ |  | 24,704 | ​
2024 | ​ |  | 24,396 | ​
Thereafter | ​ |  | 87,235 | ​
​ | ​ | $ | 215,274 | ​
Airport customer service and other |
Agreements with other airlines |
Schedule of revenue by type | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the three months ended March 31,
​ |  | 2020 |  | 2019
Airport customer service revenue |  | $ | 9,896 |  | $ | 14,635
Operating lease revenue | ​ |  | 10,546 | ​ |  | 9,058
Lease, airport services and other |  | $ | 20,442 |  | $ | 23,693

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