Flight
UAL1257 12 Mar 2026
UAL1257, operated by United Airlines, on 12 Mar 2026: Miami International (KMIA) to San Francisco International (KSFO). Scheduled and actual times are local to each airport (hover for UTC).
Flightestimated
PlaneTrack receiver network| Route | KMIA MIAMI INTERNATIONAL → KSFO SAN FRANCISCO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 07:21 EDT |
| Last seen | 07:02 PDT |
| Duration | 2h 40m |
| Aircraft | N77552 |
| Max altitude | 34,000 ft |
| Distance tracked | 2,242 nm |
Punctuality, last 30 days
| Flights | 13 |
| On time | 4 (31%) |
| Average delay | +29 min |
| Worst delay | +81 min |
In the last 30 days UAL1257 departed on time (within 15 minutes) on 4 of 13 flights (31%), with an average departure delay of +29 min and a worst delay of +81 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.