Flight
UAL1839 29 Aug 2026
UAL1839, operated by United Airlines, on 29 Aug 2026, 3 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 3partial
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 17:00 PDT 28 Aug |
| Aircraft | A3D302 |
Leg 2 of 3
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 21:16 PDT 28 Aug |
| Last seen | 08:52 CDT |
| Duration | 9h 35m |
| Aircraft | A3D302 |
| Max altitude | 37,050 ft |
| Distance tracked | 1,600 nm |
Leg 3 of 3
PlaneTrack receiver network| Route | KORD CHICAGO OHARE INTERNATIONAL → KSFO SAN FRANCISCO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 13:15 CDT |
| Last seen | 15:26 PDT |
| Duration | 4h 11m |
| Aircraft | A0B81D |
| Max altitude | 32,025 ft |
| Distance tracked | 1,600 nm |
Punctuality, last 30 days
| Flights | 8 |
| On time | 0 (0%) |
| Average delay | +42 min |
| Worst delay | +72 min |
In the last 30 days UAL1839 departed on time (within 15 minutes) on 0 of 8 flights (0%), with an average departure delay of +42 min and a worst delay of +72 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.