N39423 · BOEING 737-900

Manufacturer and model

BOEING 737-900

Operator

United Airlines (UAL)

First seen

2026-08-10

Last seen

2026-09-26

Flights over the last 30 days

108

Recent flights

• UAL1362 → Denver International Airport (DEN/KDEN) 2026-09-26
• UAL1347 Denver International Airport (DEN/KDEN) → 2026-09-26
• UAL1136 Salt Lake City International Airport (SLC/KSLC) → Denver International Airport (DEN/KDEN) 2026-09-26
• UAL1136 Cancún International Airport (CUN/MMUN) → Salt Lake City International Airport (SLC/KSLC) 2026-09-25
• UAL1167 George Bush Intercontinental Airport (IAH/KIAH) → Cancún International Airport (CUN/MMUN) 2026-09-25

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