Flight
UAL2123 3 Apr 2026
UAL2123, operated by United Airlines, on 3 Apr 2026: Denver International (KDEN) to San Francisco International (KSFO), 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2
PlaneTrack receiver network| Route | KDEN DENVER INTERNATIONAL → KSFO SAN FRANCISCO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 20:53 MDT 2 Apr |
| Last seen | 23:00 PDT 2 Apr |
| Duration | 3h 06m |
| Aircraft | N17285 |
| Max altitude | 34,025 ft |
| Distance tracked | 838 nm |
Leg 2 of 2partial
PlaneTrack receiver network| Route | KDEN DENVER INTERNATIONAL → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 08:10 MDT |
| Aircraft | N17285 |
| Max altitude | 38,075 ft |
Punctuality, last 30 days
| Flights | 7 |
| On time | 1 (14%) |
| Average delay | +48 min |
| Worst delay | +87 min |
In the last 30 days UAL2123 departed on time (within 15 minutes) on 1 of 7 flights (14%), with an average departure delay of +48 min and a worst delay of +87 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.