Flight
UAL3900 12 Feb 2026
UAL3900, operated by United Airlines, on 12 Feb 2026: San Francisco International (KSFO) to Washington Dulles International (KIAD). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → KIAD WASHINGTON DULLES INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 21:01 PST 11 Feb |
| Last seen | 04:34 EST |
| Duration | 4h 33m |
| Aircraft | N2140U |
| Max altitude | 39,000 ft |
| Distance tracked | 2,096 nm |
Punctuality, last 30 days
| Flights | 2 |
| On time | 0 (0%) |
| Average delay | +80 min |
| Worst delay | +88 min |
In the last 30 days UAL3900 departed on time (within 15 minutes) on 0 of 2 flights (0%), with an average departure delay of +80 min and a worst delay of +88 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.