Flight
UAL399 8 May 2026
UAL399, operated by United Airlines, on 8 May 2026, 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2partial
PlaneTrack receiver network| Route | KIAH GEORGE BUSH INTCNTL HOUSTON → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 19:36 CDT 7 May |
| Aircraft | N481UA |
| Max altitude | 34,000 ft |
Leg 2 of 2
PlaneTrack receiver network| Route | ? → KIAH GEORGE BUSH INTCNTL HOUSTON |
| Status | Completed (receiver network) |
| First seen airborne | 20:29Z |
| Last seen | 18:45 CDT |
| Duration | 3h 15m |
| Aircraft | N822UA |
| Max altitude | 25,025 ft |
Punctuality, last 30 days
| Flights | 7 |
| On time | 5 (71%) |
| Average delay | +17 min |
| Worst delay | +56 min |
In the last 30 days UAL399 departed on time (within 15 minutes) on 5 of 7 flights (71%), with an average departure delay of +17 min and a worst delay of +56 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.