N17321 · BOEING 737 MAX 8

Manufacturer and model

BOEING 737 MAX 8

Operator

United Airlines (UAL)

First seen

2026-08-10

Last seen

2026-09-27

Flights over the last 30 days

146

Recent flights

• UAL1684 San Francisco International Airport (SFO/KSFO) → Lihue Airport (LIH/PHLI) 2026-09-27
• UAL2281 Seattle–Tacoma International Airport (SEA/KSEA) → San Francisco International Airport (SFO/KSFO) 2026-09-26
• UAL2281 Seattle–Tacoma International Airport (SEA/KSEA) → San Francisco International Airport (SFO/KSFO) 2026-09-26
• UAL500 → Seattle–Tacoma International Airport (SEA/KSEA) 2026-09-26
• UAL500 San Francisco International Airport (SFO/KSFO) → 2026-09-26

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