Flight
UAL1239 2 Feb 2026
UAL1239, operated by United Airlines, on 2 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 | 20:42 CST 1 Feb |
| Last seen | 21:58 MST 1 Feb |
| Duration | 2h 15m |
| Aircraft | A55FE9 |
| Max altitude | 34,025 ft |
| Distance tracked | 749 nm |
Punctuality, last 30 days
| Flights | 14 |
| On time | 8 (57%) |
| Average delay | +26 min |
| Worst delay | +140 min |
In the last 30 days UAL1239 departed on time (within 15 minutes) on 8 of 14 flights (57%), with an average departure delay of +26 min and a worst delay of +140 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.