Flight
UAL1851 30 Apr 2026
UAL1851, operated by United Airlines, on 30 Apr 2026: Ontario International (KONT) to San Francisco International (KSFO). Scheduled and actual times are local to each airport (hover for UTC).
Flightestimated
PlaneTrack receiver network| Route | KONT ONTARIO INTERNATIONAL → KSFO SAN FRANCISCO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 11:17 PDT |
| Last seen | 12:48 PDT |
| Duration | 1h 30m |
| Aircraft | N61898 |
| Max altitude | 36,000 ft |
Punctuality, last 30 days
| Flights | 7 |
| On time | 4 (57%) |
| Average delay | -77 min |
| Worst delay | +380 min |
In the last 30 days UAL1851 departed on time (within 15 minutes) on 4 of 7 flights (57%), with an average departure delay of -77 min and a worst delay of +380 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.