Flight
UAL1221 28 Feb 2026
UAL1221, operated by United Airlines, on 28 Feb 2026: Denver International (KDEN) to Ontario International (KONT). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KDEN DENVER INTERNATIONAL → KONT ONTARIO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 19:10 MST 27 Feb |
| Last seen | 20:30 PST 27 Feb |
| Duration | 2h 19m |
| Aircraft | N36207 |
| Max altitude | 36,000 ft |
| Distance tracked | 710 nm |
Punctuality, last 30 days
| Flights | 11 |
| On time | 6 (55%) |
| Average delay | +26 min |
| Worst delay | +113 min |
In the last 30 days UAL1221 departed on time (within 15 minutes) on 6 of 11 flights (55%), with an average departure delay of +26 min and a worst delay of +113 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.