Flight
UAL1239 6 Feb 2026
UAL1239, operated by United Airlines, on 6 Feb 2026: George Bush Intcntl Houston (KIAH) to Denver International (KDEN). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KIAH GEORGE BUSH INTCNTL HOUSTON → KDEN DENVER INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 20:38 CST 5 Feb |
| Last seen | 21:42 MST 5 Feb |
| Duration | 2h 03m |
| Aircraft | A0B844 |
| Max altitude | 36,025 ft |
| Distance tracked | 749 nm |
Punctuality, last 30 days
| Flights | 16 |
| On time | 8 (50%) |
| Average delay | +40 min |
| Worst delay | +173 min |
In the last 30 days UAL1239 departed on time (within 15 minutes) on 8 of 16 flights (50%), with an average departure delay of +40 min and a worst delay of +173 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.