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Flying Agreements Revenue and Airport Customer Service and Other Revenues (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2019
Agreements with other airlines |
Schedule of future minimum rental payments for operating leases | ​
​ | ​ | ​ | ​ | ​
July 2019 through December 2019 |  | $ | 36,756 |
2020 | ​ |  | 93,752 | ​
2021 | ​ |  | 76,687 | ​
2022 | ​ |  | 67,728 | ​
2023 | ​ |  | 62,558 | ​
Thereafter | ​ |  | 88,144 | ​
​ | ​ | $ | 425,625 | ​
Schedule of flying agreements revenue | The following table represents the Company’s flying agreements revenue by type for the three- and six-month periods ended June 30, 2019 and 2018 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the three months ended June 30, | ​ | For the six months ended June 30, | ​
​ |  | 2019 |  | 2018 |  | 2019 |  | 2018 | ​
Capacity purchase agreements revenue: flight operations |  | $ | 383,732 |  | $ | 462,824 |  | $ | 770,278 |  | $ | 931,849 | ​
Capacity purchase agreements revenue: aircraft lease revenue | ​ | ​ | 206,678 | ​ | ​ | 201,306 | ​ | ​ | 414,059 | ​ | ​ | 390,375 | ​
Prorate agreements revenue | ​ |  | 134,925 | ​ |  | 129,507 | ​ |  | 240,999 | ​ |  | 239,378 | ​
Flying agreements revenue |  | $ | 725,335 |  | $ | 793,637 |  | $ | 1,425,336 |  | $ | 1,561,602 |
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 (fixed-fee arrangement) | ​ | • CRJ 200 • CRJ 700 • CRJ 900 • E175 | ​ | 57 16 42 54 | ​ | • Individual aircraft have scheduled removal dates from 2019 to 2029
Delta Connection Prorate Agreement (revenue-sharing arrangement) | ​ | • CRJ 200 | ​ | 29 | ​ | • Terminable with 30-day notice
​
United Express Agreements
Agreement |  | Aircraft type |  | Number of Aircraft |  | Term / Termination Dates
United Express Agreements (fixed-fee arrangement) | ​ | • CRJ 200 • CRJ 700 • E175 | ​ | 69 19 65 | ​ | • Individual aircraft have scheduled removal dates from 2020 to 2029
United Express Prorate Agreement (revenue-sharing arrangement) | ​ | • CRJ 200 | ​ | 28 | ​ | • Terminable with 120-day notice
​
​ | ​ | ​ | ​ | ​ | ​ | ​
American Agreements
Agreement |  | Aircraft type |  | Number of Aircraft |  | Term / Termination Dates
American Agreement (fixed-fee arrangement) | ​ | • CRJ 700 | ​ | 64 | ​ | • Individual aircraft have scheduled removal dates from 2022 to 2025
American Prorate Agreement (revenue-sharing arrangement) | ​ | • CRJ 200 | ​ | 7 | ​ | • Terminable with 120-day notice
​ ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Alaska Capacity Purchase Agreement
Agreement |  | Aircraft type |  | Number of Aircraft |  | Term / Termination Dates
Alaska Agreement (fixed-fee arrangement) | ​ | • E175 | ​ | 32 | ​ | • Individual aircraft have scheduled removal dates from 2027 to 2030
Aircraft |
Agreements with other airlines |
Schedule of future minimum rental payments for operating leases | The following table summarizes future minimum rental income under operating leases primarily related to leased aircraft that had remaining non-cancelable lease terms as of June 30, 2019 (in thousands):

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