UAL1721
- Flight number
- UAL1721
- Airline
- United Airlines (UAL)
- Route
- San Francisco International Airport (SFO/KSFO) → Ellison Onizuka Kona International Airport at Keāhole (KOA/PHKO) At least one end of this route is not from our own observation.
- Observed take-off
- Last heard
- Aircraft
- N37440 · BOEING 737 MAX 9
- Positions recorded
- 374 As of 2026-09-26 15:39 UTC
Source: observations by the map.flights community network of ADS-B receivers; times in UTC.