Flight
UAL399 23 Dec 2025
UAL399, operated by United Airlines, on 23 Dec 2025: Chicago Ohare International (KORD) to General Edward Lawrence Logan International (KBOS). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KORD CHICAGO OHARE INTERNATIONAL → KBOS GENERAL EDWARD LAWRENCE LOGAN INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 12:25 CST |
| Last seen | 15:26 EST |
| Duration | 2h 01m |
| Aircraft | N76523 |
| Max altitude | 36,950 ft |
| Distance tracked | 751 nm |
Punctuality, last 30 days
| Flights | 7 |
| On time | 5 (71%) |
| Average delay | +17 min |
| Worst delay | +56 min |
In the last 30 days UAL399 departed on time (within 15 minutes) on 5 of 7 flights (71%), with an average departure delay of +17 min and a worst delay of +56 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.