Flight
UAL853 21 Dec 2025
UAL853, operated by United Airlines, on 21 Dec 2025: San Francisco International (KSFO) to Chiang Kai Shek International (RCTP). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → RCTP CHIANG KAI SHEK INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 23:26 PST 20 Dec |
| Last seen | 06:16 CST 22 Dec |
| Duration | 14h 49m |
| Aircraft | N77012 |
| Max altitude | 38,000 ft |
| Distance tracked | 5,610 nm |
Punctuality, last 30 days
| Flights | 7 |
| On time | 0 (0%) |
| Average delay | +49 min |
| Worst delay | +102 min |
In the last 30 days UAL853 departed on time (within 15 minutes) on 0 of 7 flights (0%), with an average departure delay of +49 min and a worst delay of +102 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.