Boulder Airport

Boulder Airport is an airport located in Boulder Montana, US. The ICAO code is K3U9, used by air traffic control and pilots for flight planning.

The airport operates in the America/Denver timezone. When planning flights to or from K3U9, use our flight duration calculator to account for timezone differences, especially for international travel.

Boulder Airport sits at an elevation of 4,968 feet (1,514 meters) above sea level.

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