Airports US 3U9
Small Airport
3U9
3U9

🇺🇸 Boulder Airport

Boulder, US-MT, US 4968 ft America/Denver
Updated Dec 10, 2025

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3U9 in 20 seconds
Boulder Airport serves Boulder, US.
AirportRoutes · updated Dec 10, 2025
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Where is Boulder Airport located?

Boulder Airport is located in Boulder, US, at an elevation of 4968 ft. Its IATA code is — and ICAO code is 3U9.