Flight
UAL1577 5 May 2026
UAL1577, operated by United Airlines, on 5 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 | 17:00 PDT 4 May |
| Last seen | 10:38 CDT |
| Duration | 15h 38m |
| Aircraft | A2452C |
| Max altitude | 32,050 ft |
Leg 2 of 2
PlaneTrack receiver network| Route | KORD CHICAGO OHARE INTERNATIONAL → KSFO SAN FRANCISCO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 14:37 CDT |
| Last seen | 16:50 PDT |
| Duration | 4h 12m |
| Aircraft | A6EDA7 |
| Max altitude | 34,025 ft |
| Distance tracked | 1,600 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.