Flight
UAL1639 20 Jun 2026
UAL1639, operated by United Airlines, on 20 Jun 2026: Denver International (KDEN) to Lambert St Louis International (KSTL), 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2
PlaneTrack receiver network| Route | KDEN DENVER INTERNATIONAL → KSTL LAMBERT ST LOUIS INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 13:30 MDT |
| Last seen | 16:20 CDT |
| Duration | 1h 49m |
| Aircraft | N835UA |
| Max altitude | 39,075 ft |
| Distance tracked | 667 nm |
Leg 2 of 2
PlaneTrack receiver network| Route | KSTL LAMBERT ST LOUIS INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 17:34 CDT |
| Last seen | 18:20 CDT |
| Duration | 0h 45m |
| Aircraft | N835UA |
| Max altitude | 27,025 ft |
| Distance tracked | 224 nm |
Punctuality, last 30 days
| Flights | 7 |
| On time | 3 (43%) |
| Average delay | +26 min |
| Worst delay | +59 min |
In the last 30 days UAL1639 departed on time (within 15 minutes) on 3 of 7 flights (43%), with an average departure delay of +26 min and a worst delay of +59 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.