Flight
UAL421 18 Sep 2026
UAL421, operated by United Airlines, on 18 Sep 2026, 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2partial
PlaneTrack receiver network| Route | KIAD WASHINGTON DULLES INTERNATIONAL → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 20:00 EDT 17 Sep |
| Aircraft | A0B7BD |
| Max altitude | 33,000 ft |
Leg 2 of 2partial
PlaneTrack receiver network| Route | KIAD WASHINGTON DULLES INTERNATIONAL → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 00:35 EDT |
| Aircraft | N87531 |
| Max altitude | 38,025 ft |
Punctuality, last 30 days
| Flights | 16 |
| On time | 5 (31%) |
| Average delay | +44 min |
| Worst delay | +175 min |
In the last 30 days UAL421 departed on time (within 15 minutes) on 5 of 16 flights (31%), with an average departure delay of +44 min and a worst delay of +175 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.