Flight
UAL521 17 Sep 2026
UAL521, operated by United Airlines, on 17 Sep 2026: George Bush Intcntl Houston (KIAH) to General Edward Lawrence Logan International (KBOS). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KIAH GEORGE BUSH INTCNTL HOUSTON → KBOS GENERAL EDWARD LAWRENCE LOGAN INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 19:06 CDT 16 Sep |
| Last seen | 23:20 EDT 16 Sep |
| Duration | 3h 13m |
| Aircraft | AA7EC2 |
| Max altitude | 35,000 ft |
| Distance tracked | 1,386 nm |
Punctuality, last 30 days
| Flights | 8 |
| On time | 4 (50%) |
| Average delay | -606 min |
| Worst delay | +228 min |
In the last 30 days UAL521 departed on time (within 15 minutes) on 4 of 8 flights (50%), with an average departure delay of -606 min and a worst delay of +228 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.