N77431 · BOEING 737-900

Manufacturer and model

BOEING 737-900

Operator

United Airlines (UAL)

First seen

2026-08-11

Last seen

2026-09-26

Flights over the last 30 days

116

Recent flights

• UAL1429 → Denver International Airport (DEN/KDEN) 2026-09-26
• UAL1429 Portland International Airport (PDX/KPDX) → 2026-09-26
• UAL1247 Denver International Airport (DEN/KDEN) → Portland International Airport (PDX/KPDX) 2026-09-26
• UAL1247 Denver International Airport (DEN/KDEN) → Portland International Airport (PDX/KPDX) 2026-09-26
• UAL3762 → Denver International Airport (DEN/KDEN) 2026-09-26

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