Flight
UAL1439 4 May 2026
UAL1439, operated by United Airlines, on 4 May 2026: Dallas Fort Worth International (KDFW) to Washington Dulles International (KIAD), 3 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 3
PlaneTrack receiver network| Route | KDFW DALLAS FORT WORTH INTERNATIONAL → KIAD WASHINGTON DULLES INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 19:35 CDT 3 May |
| Last seen | 23:18 EDT 3 May |
| Duration | 2h 42m |
| Aircraft | N853UA |
| Max altitude | 35,025 ft |
Leg 2 of 3
PlaneTrack receiver network| Route | KIAD WASHINGTON DULLES INTERNATIONAL → KEWR NEWARK LIBERTY INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 00:34 EDT |
| Last seen | 01:24 EDT |
| Duration | 0h 49m |
| Aircraft | N853UA |
| Max altitude | 21,025 ft |
| Distance tracked | 184 nm |
Leg 3 of 3estimated
PlaneTrack receiver network| Route | Route not recorded |
| Status | Completed (receiver network) |
| First seen airborne | 12:56Z |
| Last seen | 23:58Z |
| Duration | 11h 01m |
| Aircraft | N853UA |
| Max altitude | 28,000 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.