UAL521
- Airline
- United Airlines (UAL)
- Route
- George Bush Intercontinental Airport (IAH/KIAH) → Boston Logan International Airport (BOS/KBOS)
- Observed take-off
- Observed landing
- Aircraft
- N77576 · BOEING 737 MAX 9
- Positions recorded
- 7679
- Time airborne
- 173 min
Source: observations by the map.flights community network of ADS-B receivers; times in UTC.