Flight
UAL520 31 Jan 2026
UAL520, operated by United Airlines, on 31 Jan 2026: Phoenix Sky Harbor International (KPHX) to San Carlos Airport (KSQL), 3 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 3
PlaneTrack receiver network| Route | KPHX PHOENIX SKY HARBOR INTERNATIONAL → KSQL San Carlos Airport |
| Status | Completed (receiver network) |
| First seen airborne | 19:35 MST 30 Jan |
| Last seen | 08:37 PST |
| Duration | 14h 01m |
| Aircraft | A0B803 |
| Max altitude | 39,050 ft |
| Distance tracked | 556 nm |
Leg 2 of 3
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → KPHX PHOENIX SKY HARBOR INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 11:02 PST |
| Last seen | 13:58 MST |
| Duration | 1h 55m |
| Aircraft | N57439 |
| Max altitude | 35,000 ft |
| Distance tracked | 564 nm |
Leg 3 of 3estimated
PlaneTrack receiver network| Route | KPHX PHOENIX SKY HARBOR INTERNATIONAL → ? |
| Status | Completed (receiver network) |
| First seen airborne | 15:45 MST |
| Last seen | 23:58Z |
| Duration | 1h 13m |
| Aircraft | A0B823 |
| Max altitude | 36,875 ft |
Punctuality, last 30 days
| Flights | 12 |
| On time | 4 (33%) |
| Average delay | +57 min |
| Worst delay | +139 min |
In the last 30 days UAL520 departed on time (within 15 minutes) on 4 of 12 flights (33%), with an average departure delay of +57 min and a worst delay of +139 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.