Flight
UAL3921 27 Sep 2026
UAL3921, operated by United Airlines, on 27 Sep 2026: Seattle Tacoma International (KSEA) to Denver International (KDEN). Scheduled and actual times are local to each airport (hover for UTC).
Flight
FAA SWIM schedule| Route | KSEA SEATTLE TACOMA INTERNATIONAL → KDEN DENVER INTERNATIONAL |
| Status | Cancelled |
| Scheduled departure | 18:10 PDT 26 Sep |
Punctuality, last 30 days
| Flights | 2 |
| On time | 0 (0%) |
| Average delay | +58 min |
| Worst delay | +97 min |
In the last 30 days UAL3921 departed on time (within 15 minutes) on 0 of 2 flights (0%), with an average departure delay of +58 min and a worst delay of +97 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.