Flight
ASA21 10 Dec 2025
ASA21, operated by Alaska Airlines, on 10 Dec 2025: John F Kennedy International (KJFK) to Seattle Tacoma International (KSEA). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KJFK JOHN F KENNEDY INTERNATIONAL → KSEA SEATTLE TACOMA INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 07:10 EST |
| Last seen | 11:30 PST |
| Duration | 7h 19m |
| Aircraft | N491AS |
| Max altitude | 36,025 ft |
| Distance tracked | 2,098 nm |
Punctuality, last 30 days
| Flights | 9 |
| On time | 1 (11%) |
| Average delay | +23 min |
| Worst delay | +36 min |
In the last 30 days ASA21 departed on time (within 15 minutes) on 1 of 9 flights (11%), with an average departure delay of +23 min and a worst delay of +36 min.
Schedule, departure and arrival times from the FAA SWIM feed; aircraft, altitude and distance from the PlaneTrack receiver network. On time means a departure within 15 minutes of schedule.