Flight
UAL3939 22 Jan 2026
UAL3939, operated by United Airlines, on 22 Jan 2026, 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2
PlaneTrack receiver network| Route | ? → KSFO SAN FRANCISCO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 02:51Z |
| Last seen | 21:42 PST 21 Jan |
| Duration | 2h 50m |
| Aircraft | N769UA |
| Max altitude | 40,000 ft |
Leg 2 of 2
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → VHHH HONG KONG INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 11:37 PST |
| Last seen | 18:38 HKT 23 Jan |
| Duration | 15h 00m |
| Aircraft | AA6B9F |
| Distance tracked | 6,008 nm |
Punctuality, last 30 days
| Flights | 1 |
| On time | 0 (0%) |
| Average delay | +30 min |
| Worst delay | +30 min |
In the last 30 days UAL3939 departed on time (within 15 minutes) on 0 of 1 flight (0%), with an average departure delay of +30 min and a worst delay of +30 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.