Flight
UAL1439 28 May 2026
UAL1439, operated by United Airlines, on 28 May 2026, 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2estimated
PlaneTrack receiver network| Route | Route not recorded |
| Status | Completed (receiver network) |
| First seen airborne | 01:33Z |
| Last seen | 04:50Z |
| Duration | 3h 16m |
| Aircraft | N818UA |
| Max altitude | 37,050 ft |
Leg 2 of 2estimated
PlaneTrack receiver network| Route | Route not recorded |
| Status | Completed (receiver network) |
| First seen airborne | 10:06Z |
| Last seen | 22:50Z |
| Duration | 12h 43m |
| Aircraft | N818UA |
| Max altitude | 24,000 ft |
Punctuality, last 30 days
| Flights | 8 |
| On time | 4 (50%) |
| Average delay | +33 min |
| Worst delay | +172 min |
In the last 30 days UAL1439 departed on time (within 15 minutes) on 4 of 8 flights (50%), with an average departure delay of +33 min and a worst delay of +172 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.