Flight
UAL1577 27 May 2026
UAL1577, operated by United Airlines, on 27 May 2026: San Francisco International (KSFO) to Chicago Ohare International (KORD), 2 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 2
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 18:48 PDT 26 May |
| Last seen | 11:20 CDT |
| Duration | 14h 31m |
| Aircraft | N454UA |
| Max altitude | 37,775 ft |
| Distance tracked | 1,600 nm |
Leg 2 of 2estimated
PlaneTrack receiver network| Route | KORD CHICAGO OHARE INTERNATIONAL → KOAK METROPOLITAN OAKLAND INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 15:15 CDT |
| Last seen | 16:58 PDT |
| Duration | 3h 42m |
| Aircraft | N57862 |
| Max altitude | 36,000 ft |
| Distance tracked | 1,591 nm |
Punctuality, last 30 days
| Flights | 19 |
| On time | 5 (26%) |
| Average delay | -23 min |
| Worst delay | +291 min |
In the last 30 days UAL1577 departed on time (within 15 minutes) on 5 of 19 flights (26%), with an average departure delay of -23 min and a worst delay of +291 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.