Flight
UAL1639 18 Sep 2026
UAL1639, operated by United Airlines, on 18 Sep 2026: Denver International (KDEN) to Lambert St Louis International (KSTL). Scheduled and actual times are local to each airport (hover for UTC).
Flightestimated
PlaneTrack receiver network| Route | KDEN DENVER INTERNATIONAL → KSTL LAMBERT ST LOUIS INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 14:11 MDT |
| Last seen | 16:50 CDT |
| Duration | 1h 39m |
| Aircraft | N491UA |
| Max altitude | 35,000 ft |
| Distance tracked | 667 nm |
Punctuality, last 30 days
| Flights | 8 |
| On time | 4 (50%) |
| Average delay | +19 min |
| Worst delay | +59 min |
In the last 30 days UAL1639 departed on time (within 15 minutes) on 4 of 8 flights (50%), with an average departure delay of +19 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.