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Airport InformationWeather by Weathermeister™
FAA information as of: 2026/09/03
Airport: Boulder (3U9)
2 miles S of Boulder
Sectional chart: Great Falls
Elevation: 4968 ft
Magnetic Variation: 17° E
Traffic Pattern Altitude: See Remarks section below
Segmented Circle: Y
Lighting:
Communications:
Non-commercial landing fee: N
Airport: Boulder (3U9)
2 miles S of Boulder
Sectional chart: Great Falls
Latitude
Longitude
46° 12' 41.9"N
112° 6' 27.3"W
46° 12.699'N
112° 6.456'W
46.21166666°
-112.10761111°
Magnetic Variation: 17° E
Traffic Pattern Altitude: See Remarks section below
Segmented Circle: Y
Lighting:
Communications:
CTAF and/or UNICOM:
122.9
ARTCC:
Salt Lake City
Flight Service Station:
1-800-WX-BRIEF
Runway Information
Runway: 11/29
Dimensions: 3675 x 72 ft
Runway treatment: NONE
Edge lighting: None
Services
Fuel types:
Bottled oxygen: None
Bulk oxygen type: None
Airframe repair: None
Powerplant repair: None
Customs airport of entry: N
Customs landing rights: N
Contact information
Owner:
Twn Of Boulder & Jefferson Co
County Courthouse Box H
Boulder, Mt 59632
406-225-4025
Manager:
Al Martini
Po Box 2
Boulder, Mt 59632
(406) 431-7519