UAL503
- Airline
- United Airlines (UAL)
- Route
- Boston Logan International Airport (BOS/KBOS) → Chicago O'Hare International Airport (ORD/KORD)
- Observed take-off
- Observed landing
- Aircraft
- N78524 · BOEING 737-800
- Positions recorded
- 4844
- Time airborne
- 117 min
Source: observations by the map.flights community network of ADS-B receivers; times in UTC.