UAL638
- Airline
- United Airlines (UAL)
- Route
- Ronald Reagan Washington National Airport (DCA/KDCA) → Chicago O'Hare International Airport (ORD/KORD)
- Observed take-off
- Observed landing
- Aircraft
- N39726 · BOEING 737-700
- Positions recorded
- 3650
- Time airborne
- 94 min
Source: observations by the map.flights community network of ADS-B receivers; times in UTC.