Flight
UAL1637 22 Aug 2025
UAL1637, operated by United Airlines, on 22 Aug 2025: Phoenix Sky Harbor International (KPHX) to Denver International (KDEN). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KPHX PHOENIX SKY HARBOR INTERNATIONAL → KDEN DENVER INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 18:18 MST 21 Aug |
| Last seen | 23:53 MDT 21 Aug |
| Duration | 4h 34m |
| Aircraft | N78511 |
| Max altitude | 35,025 ft |
| Distance tracked | 522 nm |
Punctuality, last 30 days
| Flights | 12 |
| On time | 4 (33%) |
| Average delay | +71 min |
| Worst delay | +234 min |
In the last 30 days UAL1637 departed on time (within 15 minutes) on 4 of 12 flights (33%), with an average departure delay of +71 min and a worst delay of +234 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.