Flight
UAL2121 5 Jan 2026
UAL2121, operated by United Airlines, on 5 Jan 2026: Washington Dulles International (KIAD) to Denver International (KDEN). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KIAD WASHINGTON DULLES INTERNATIONAL → KDEN DENVER INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 14:19 EST |
| Last seen | 16:16 MST |
| Duration | 3h 57m |
| Aircraft | N69839 |
| Max altitude | 32,000 ft |
| Distance tracked | 1,258 nm |
Punctuality, last 30 days
| Flights | 7 |
| On time | 6 (86%) |
| Average delay | -1204 min |
| Worst delay | +37 min |
In the last 30 days UAL2121 departed on time (within 15 minutes) on 6 of 7 flights (86%), with an average departure delay of -1204 min and a worst delay of +37 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.