Flight
UAL1239 13 Oct 2025
UAL1239, operated by United Airlines, on 13 Oct 2025: George Bush Intcntl Houston (KIAH) to Jacksonville International (KJAX), 3 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 3
PlaneTrack receiver network| Route | KIAH GEORGE BUSH INTCNTL HOUSTON → KJAX JACKSONVILLE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 07:45 CDT |
| Last seen | 10:30 EDT |
| Duration | 1h 45m |
| Aircraft | N77535 |
| Max altitude | 37,000 ft |
| Distance tracked | 708 nm |
Leg 2 of 3
PlaneTrack receiver network| Route | KJAX JACKSONVILLE INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 11:31 EDT |
| Last seen | 12:42 CDT |
| Duration | 2h 10m |
| Aircraft | N477UA |
| Max altitude | 36,025 ft |
| Distance tracked | 751 nm |
Leg 3 of 3
PlaneTrack receiver network| Route | KORD CHICAGO OHARE INTERNATIONAL → KROC GREATER ROCHESTER INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 14:13 CDT |
| Last seen | 16:24 EDT |
| Duration | 1h 10m |
| Aircraft | N27724 |
| Max altitude | 37,000 ft |
| Distance tracked | 457 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.