Flight
UAL639 29 Sep 2026
UAL639, operated by United Airlines, on 29 Sep 2026: General Edward Lawrence Logan International (KBOS) to Los Angeles International (KLAX), 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2
FAA SWIM schedule| Route | KBOS GENERAL EDWARD LAWRENCE LOGAN INTERNATIONAL → KLAX LOS ANGELES INTERNATIONAL |
| Status | Completed |
| Actual departure | 01:03 EDT |
| Actual arrival | 03:43 PDT |
| Duration | 5h 40m |
| Aircraft | N27419 B39M |
| Max altitude | 34,000 ft |
| Distance tracked | 2,264 nm |
Leg 2 of 2
FAA SWIM schedule| Route | KSFO SAN FRANCISCO INTERNATIONAL → KSBA Santa Barbara Municipal Airport |
| Status | Completed, departure delayed +32 min |
| Scheduled departure | 16:55 PDT |
| Actual departure | 17:27 PDT delayed +32 min |
| Actual arrival | 18:10 PDT |
| Duration | 0h 43m |
| Aircraft | N811UA A319 |
Punctuality, last 30 days
| Flights | 7 |
| On time | 2 (29%) |
| Average delay | -127 min |
| Worst delay | +185 min |
In the last 30 days UAL639 departed on time (within 15 minutes) on 2 of 7 flights (29%), with an average departure delay of -127 min and a worst delay of +185 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.