Flight
UAL1239 23 Aug 2025
UAL1239, operated by United Airlines, on 23 Aug 2025: Jacksonville International (KJAX) to Chicago Ohare International (KORD), 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2
PlaneTrack receiver network| Route | KJAX JACKSONVILLE INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 01:32 EDT |
| Last seen | 12:34 CDT |
| Duration | 12h 01m |
| Aircraft | N855UA |
| Max altitude | 38,000 ft |
| Distance tracked | 751 nm |
Leg 2 of 2
PlaneTrack receiver network| Route | KORD CHICAGO OHARE INTERNATIONAL → KROC GREATER ROCHESTER INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 14:41 CDT |
| Last seen | 17:32 EDT |
| Duration | 1h 50m |
| Aircraft | N18223 |
| Max altitude | 33,000 ft |
| Distance tracked | 457 nm |
Punctuality, last 30 days
| Flights | 14 |
| On time | 7 (50%) |
| Average delay | +44 min |
| Worst delay | +173 min |
In the last 30 days UAL1239 departed on time (within 15 minutes) on 7 of 14 flights (50%), with an average departure delay of +44 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.