Flight
UAL399 9 Sep 2026
UAL399, operated by United Airlines, on 9 Sep 2026. Scheduled and actual times are local to each airport (hover for UTC).
Flightpartial
PlaneTrack receiver network| Route | KIAD WASHINGTON DULLES INTERNATIONAL → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 22:50 EDT 8 Sep |
| Aircraft | N29129 |
| Max altitude | 40,000 ft |
Punctuality, last 30 days
| Flights | 7 |
| On time | 5 (71%) |
| Average delay | +49 min |
| Worst delay | +241 min |
In the last 30 days UAL399 departed on time (within 15 minutes) on 5 of 7 flights (71%), with an average departure delay of +49 min and a worst delay of +241 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.