Flight
UAL1577 23 Feb 2026
UAL1577, operated by United Airlines, on 23 Feb 2026, 3 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 3partial
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 16:03 PST 22 Feb |
| Aircraft | A2452A |
| Max altitude | 32,050 ft |
Leg 2 of 3
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → KORD CHICAGO OHARE INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 18:58 PST 22 Feb |
| Last seen | 12:56 CST |
| Duration | 15h 57m |
| Aircraft | N37471 |
| Max altitude | 32,025 ft |
| Distance tracked | 1,600 nm |
Leg 3 of 3estimated
PlaneTrack receiver network| Route | KORD CHICAGO OHARE INTERNATIONAL → KOAK METROPOLITAN OAKLAND INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 15:00 CST |
| Last seen | 15:58 PST |
| Duration | 2h 57m |
| Aircraft | A6ED3B |
| Max altitude | 32,025 ft |
| Distance tracked | 1,591 nm |
Punctuality, last 30 days
| Flights | 22 |
| On time | 6 (27%) |
| Average delay | -15 min |
| Worst delay | +291 min |
In the last 30 days UAL1577 departed on time (within 15 minutes) on 6 of 22 flights (27%), with an average departure delay of -15 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.