Flight
UAL3940 10 Sep 2026
UAL3940, operated by United Airlines, on 10 Sep 2026: The William B Hartsfield Atlanta International (KATL) to Chicago Ohare International (KORD). Scheduled and actual times are local to each airport (hover for UTC).
Flightestimated
PlaneTrack receiver network| Route | KATL THE WILLIAM B HARTSFIELD ATLANTA INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 20:00 EDT 9 Sep |
| Last seen | 19:48 CDT 9 Sep |
| Duration | 0h 48m |
| Aircraft | N821UA |
| Max altitude | 37,075 ft |
| Distance tracked | 527 nm |
Punctuality, last 30 days
| Flights | 3 |
| On time | 0 (0%) |
| Average delay | +136 min |
| Worst delay | +221 min |
In the last 30 days UAL3940 departed on time (within 15 minutes) on 0 of 3 flights (0%), with an average departure delay of +136 min and a worst delay of +221 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.