Flight
UAL3940
Flight history and live tracking for UAL3940, operated by United Airlines. Recent flights from the PlaneTrack independent receiver network, with departure and arrival times, aircraft used, and a real-time position feed.
Route
| Airline | United Airlines |
| Typical origin | KDEN Denver International Airport |
| Typical destination | KSEA Seattle Tacoma International Airport |
| Distance | 888 nm |
Last 30 days
| Date | From | To | Dep | Arr | Duration | Aircraft |
|---|---|---|---|---|---|---|
| 2026-08-18 | KSRQ | ? | 07:34 EDT | 13:20Z | 1h 45m | N17753 |
| 2026-08-17 | VHHH | ? | 19:28 HKT | 19:00Z | 7h 31m | N29977 |
Times are local to each airport. Hover for UTC. Flights marked estimated were completed with route prediction or partial coverage.
Data access
Live positions and 365-day history for this flight are available through the PlaneTrack API (commercial use from $29/month) and as one-off CSV extracts from our own receiver network archive. Questions: [email protected]