Flight
UAL1239 21 Aug 2025
UAL1239, operated by United Airlines, on 21 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 | 02:32 EDT |
| Last seen | 12:42 CDT |
| Duration | 11h 09m |
| Aircraft | N24211 |
| 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 | 14:26 CDT |
| Last seen | 16:44 EDT |
| Duration | 1h 17m |
| Aircraft | N79541 |
| Max altitude | 37,000 ft |
| Distance tracked | 457 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.