N37521 · BOEING 737 MAX 9

Manufacturer and model

BOEING 737 MAX 9

Operator

United Airlines (UAL)

First seen

2026-08-11

Last seen

2026-09-25

Flights over the last 30 days

117

Recent flights

• UAL2177 → San Francisco International Airport (SFO/KSFO) 2026-09-25
• UAL2177 Austin Bergstrom International Airport (AUS/KAUS) → 2026-09-25
• UAL2332 San Francisco International Airport (SFO/KSFO) → Austin Bergstrom International Airport (AUS/KAUS) 2026-09-25
• UAL2332 San Francisco International Airport (SFO/KSFO) → Austin Bergstrom International Airport (AUS/KAUS) 2026-09-25
• UAL1948 Cancún International Airport (CUN/MMUN) → San Francisco International Airport (SFO/KSFO) 2026-09-24

Sources: the aircraft registry and our own observations; flight totals also include history taken over from before our own network started.