Flight
UAL521 8 Sep 2026
UAL521, operated by United Airlines, on 8 Sep 2026. Scheduled and actual times are local to each airport (hover for UTC).
Flightpartial
PlaneTrack receiver network| Route | KIAH GEORGE BUSH INTCNTL HOUSTON → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 19:03 CDT 7 Sep |
| Aircraft | N27509 |
| Max altitude | 35,000 ft |
| Distance tracked | 1,386 nm |
Punctuality, last 30 days
| Flights | 9 |
| On time | 5 (56%) |
| Average delay | -538 min |
| Worst delay | +228 min |
In the last 30 days UAL521 departed on time (within 15 minutes) on 5 of 9 flights (56%), with an average departure delay of -538 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.