Flight
UAL1537 21 May 2026
UAL1537, operated by United Airlines, on 21 May 2026: Philadelphia International (KPHL) to Denver International (KDEN), 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2estimated
PlaneTrack receiver network| Route | KPHL PHILADELPHIA INTERNATIONAL → KDEN DENVER INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 10:13 EDT |
| Last seen | 11:54 MDT |
| Duration | 3h 40m |
| Aircraft | N77535 |
| Max altitude | 36,000 ft |
| Distance tracked | 1,349 nm |
Leg 2 of 2estimated
PlaneTrack receiver network| Route | Route not recorded |
| Status | Completed (receiver network) |
| First seen airborne | 20:05Z |
| Last seen | 21:04Z |
| Duration | 0h 58m |
| Aircraft | N475UA |
| Max altitude | 32,050 ft |
Punctuality, last 30 days
| Flights | 13 |
| On time | 5 (38%) |
| Average delay | +20 min |
| Worst delay | +46 min |
In the last 30 days UAL1537 departed on time (within 15 minutes) on 5 of 13 flights (38%), with an average departure delay of +20 min and a worst delay of +46 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.