Flight
UAL503
Flight history and live tracking for UAL503, 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 | KBOS GENERAL EDWARD LAWRENCE LOGAN INTERNATIONAL |
| Typical destination | KORD CHICAGO OHARE INTERNATIONAL |
| Distance | 751 nm |
Last 30 days
| Date | From | To | Dep | Arr | Duration | Aircraft |
|---|---|---|---|---|---|---|
| 2026-08-17 | KBOS | KORD | 10:39 EDT | 14:16 CDT | 4h 36m | N76254 |
| 2026-08-16estimated | KBOS | KORD | 11:22 EDT | 13:02 CDT | 2h 39m | N37295 |
| 2026-08-15 | KBOS | KORD | 10:49 EDT | 15:31 CDT | 5h 42m | N27277 |
| 2026-08-14 | KBOS | KORD | 10:54 EDT | 14:54 CDT | 4h 59m | N27267 |
| 2026-08-13estimated | KBOS | KORD | 10:57 EDT | 12:24 CDT | 2h 26m | N27258 |
| 2026-08-12estimated | KBOS | KORD | 13:23 EDT | 14:40 CDT | 2h 16m | N47280 |
| 2026-08-11estimated | KBOS | KORD | 14:55 EDT | 14:35 CDT | 0h 39m | N37525 |
| 2026-07-23 | KBOS | KORD | 11:01 EDT | 12:08 CDT | 2h 06m | N13720 |
| 2026-07-22estimated | KBOS | KORD | 10:45 EDT | 14:07 CDT | 4h 21m | N37263 |
| 2026-07-21estimated | KBOS | KORD | 12:10 EDT | 13:34 CDT | 2h 23m | N16701 |
| 2026-07-20estimated | KBOS | KORD | 10:48 EDT | 11:58 CDT | 2h 09m | N76516 |
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]