Flight
UAL3878 6 May 2026
UAL3878, operated by United Airlines, on 6 May 2026: Seattle Tacoma International (KSEA) to Portland International (KPDX). Scheduled and actual times are local to each airport (hover for UTC).
Flight
PlaneTrack receiver network| Route | KSEA SEATTLE TACOMA INTERNATIONAL → KPDX PORTLAND INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 18:21 PDT 5 May |
| Last seen | 19:06 PDT 5 May |
| Duration | 0h 44m |
| Aircraft | A12B2D |
| Max altitude | 16,950 ft |
| Distance tracked | 112 nm |
Punctuality, last 30 days
| Flights | 2 |
| On time | 1 (50%) |
| Average delay | +54 min |
| Worst delay | +115 min |
In the last 30 days UAL3878 departed on time (within 15 minutes) on 1 of 2 flights (50%), with an average departure delay of +54 min and a worst delay of +115 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.