Flight
UAL638 23 Dec 2025
UAL638, operated by United Airlines, on 23 Dec 2025, 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2estimated
PlaneTrack receiver network| Route | ? → KSFO SAN FRANCISCO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 00:00Z |
| Last seen | 16:52 PST 22 Dec |
| Duration | 0h 52m |
| Aircraft | N77538 |
| Max altitude | 36,000 ft |
Leg 2 of 2partial
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 18:31 PST 22 Dec |
| Aircraft | N27509 |
| Max altitude | 36,000 ft |
| Distance tracked | 2,082 nm |
Punctuality, last 30 days
| Flights | 7 |
| On time | 0 (0%) |
| Average delay | +20 min |
| Worst delay | +25 min |
In the last 30 days UAL638 departed on time (within 15 minutes) on 0 of 7 flights (0%), with an average departure delay of +20 min and a worst delay of +25 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.