Flight
UAL543 18 Sep 2026
UAL543, operated by United Airlines, on 18 Sep 2026: Buffalo Niagara International (KBUF) to Chicago Ohare International (KORD), 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2estimated
PlaneTrack receiver network| Route | KBUF BUFFALO NIAGARA INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 21:52 EDT 17 Sep |
| Last seen | 07:19 CDT |
| Duration | 10h 27m |
| Aircraft | A5D319 |
| Max altitude | 28,000 ft |
| Distance tracked | 410 nm |
Leg 2 of 2
PlaneTrack receiver network| Route | KORD CHICAGO OHARE INTERNATIONAL → KSFO SAN FRANCISCO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 12:14 CDT |
| Last seen | 14:24 PDT |
| Duration | 4h 10m |
| Aircraft | A2BC5A |
| Max altitude | 36,025 ft |
| Distance tracked | 1,600 nm |
Punctuality, last 30 days
| Flights | 16 |
| On time | 6 (38%) |
| Average delay | +42 min |
| Worst delay | +223 min |
In the last 30 days UAL543 departed on time (within 15 minutes) on 6 of 16 flights (38%), with an average departure delay of +42 min and a worst delay of +223 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.