Flight
UAL421 29 Sep 2026
UAL421, operated by United Airlines, on 29 Sep 2026: Washington Dulles International (KIAD) to Chicago Ohare International (KORD), 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2
FAA SWIM schedule| Route | KIAD WASHINGTON DULLES INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed, departure delayed +33 min |
| Scheduled departure | 22:18 EDT 28 Sep |
| Actual departure | 22:51 EDT 28 Sep delayed +33 min |
| Actual arrival | 23:15 CDT 28 Sep |
| Duration | 1h 24m |
| Aircraft | N54525 A21N |
| Max altitude | 35,025 ft |
Leg 2 of 2
FAA SWIM schedule| Route | KDEN DENVER INTERNATIONAL → KIAD WASHINGTON DULLES INTERNATIONAL |
| Status | Completed, departed on time (+12 min) |
| Scheduled departure | 15:45 MDT |
| Actual departure | 15:57 MDT on time |
| Actual arrival | 20:49 EDT |
| Duration | 2h 52m |
| Aircraft | N14559 A21N |
Punctuality, last 30 days
| Flights | 14 |
| On time | 5 (36%) |
| Average delay | +37 min |
| Worst delay | +175 min |
In the last 30 days UAL421 departed on time (within 15 minutes) on 5 of 14 flights (36%), with an average departure delay of +37 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.