Flight
UAL1256 1 May 2026
UAL1256, operated by United Airlines, on 1 May 2026: San Francisco International (KSFO) to Denver International (KDEN). Scheduled and actual times are local to each airport (hover for UTC).
Flightestimated
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → KDEN DENVER INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 21:04 PDT 30 Apr |
| Last seen | 10:08 MDT |
| Duration | 12h 03m |
| Aircraft | N836UA |
| Max altitude | 38,000 ft |
| Distance tracked | 1,007 nm |
Punctuality, last 30 days
| Flights | 14 |
| On time | 4 (29%) |
| Average delay | +21 min |
| Worst delay | +68 min |
In the last 30 days UAL1256 departed on time (within 15 minutes) on 4 of 14 flights (29%), with an average departure delay of +21 min and a worst delay of +68 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.