Flight
UAL631 8 Mar 2026
UAL631, operated by United Airlines, on 8 Mar 2026: Phoenix Sky Harbor International (KPHX) to Denver International (KDEN), 3 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 3
PlaneTrack receiver network| Route | KPHX PHOENIX SKY HARBOR INTERNATIONAL → KDEN DENVER INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 18:00 MST 7 Mar |
| Last seen | 12:32 MDT |
| Duration | 17h 32m |
| Aircraft | N37408 |
| Max altitude | 37,000 ft |
| Distance tracked | 522 nm |
Leg 2 of 3
PlaneTrack receiver network| Route | KDEN DENVER INTERNATIONAL → KPHX PHOENIX SKY HARBOR INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 13:37 MDT |
| Last seen | 14:18 MST |
| Duration | 1h 40m |
| Aircraft | N37419 |
| Max altitude | 32,000 ft |
| Distance tracked | 522 nm |
Leg 3 of 3partial
PlaneTrack receiver network| Route | KPHX PHOENIX SKY HARBOR INTERNATIONAL → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 15:59 MST |
| Aircraft | A37FA1 |
| Distance tracked | 522 nm |
Punctuality, last 30 days
| Flights | 7 |
| On time | 2 (29%) |
| Average delay | -85 min |
| Worst delay | +364 min |
In the last 30 days UAL631 departed on time (within 15 minutes) on 2 of 7 flights (29%), with an average departure delay of -85 min and a worst delay of +364 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.