Flight
UAL577 12 Sep 2026
UAL577, operated by United Airlines, on 12 Sep 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 | 12:01Z |
| Last seen | 14:16Z |
| Duration | 2h 14m |
| Aircraft | N21723 |
| Max altitude | 37,000 ft |
Leg 2 of 2partial
PlaneTrack receiver network| Route | KBOS GENERAL EDWARD LAWRENCE LOGAN INTERNATIONAL → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 13:48 EDT |
| Aircraft | N13720 |
| Max altitude | 21,000 ft |
Punctuality, last 30 days
| Flights | 14 |
| On time | 7 (50%) |
| Average delay | +34 min |
| Worst delay | +191 min |
In the last 30 days UAL577 departed on time (within 15 minutes) on 7 of 14 flights (50%), with an average departure delay of +34 min and a worst delay of +191 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.