3U9
Boulder Airport
Boulder, MontanaElevation 4,968 ftSmall airport
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Runway detail & declared distances
11/29
RWY 11130°T
Traffic patternLeft
RWY 29310°T
Runway data from the FAA NASR dataset (effective 2026-06-11). Verify with the current Chart Supplement and NOTAMs.
AIRPORT INFORMATION
Facility & services
Boulder Airport is in Boulder, Montana. Field elevation 4,968 ft MSL. Airport facts are drawn from OurAirports and the FAA NASR dataset.
OPERATIONS & CONTACT
OwnershipPublicly owned
UseOpen to the public
TypeSmall airport
ManagerAL MARTINI
Manager phone(406) 431-7519
AttendedUNATNDD
CHARTS & AIRSPACE
ICAO / IATA3U9
SectionalGREAT FALLS
Center (ARTCC)SALT LAKE CITY
Flight service (AFSS)GREAT FALLS
RegionMontana
CountryUnited States
Coordinates46.2116, -112.1060
Distance from city2 NM S
SERVICES & LIGHTING
Control towerNon-towered
CTAF122.900
FREQUENCIES
Communications
122.900
CTAF
CTAF
Not all tower/ground/approach frequencies are in our datasets. Verify with the FAA Chart Supplement.
AIRPORT REMARKS
Operational remarks
›NO SNOW REMOVAL
›-2 FT DRAINAGE DITCH +1 FT BERM WEST SIDE OF RY FULL LENGTH; 43 FT FM RY 11/29 CNTRLN.
›RY 11/29 THLDS & EDGES MARKED WITH WHITE CONES
›NO PHONE ON AIRPORT.
›HAS 1% TO 3% UPHILL GRADIENT FROM RY 29 END TO RY 11 END.
›FOR CD CTC HELENA APCH AT 406-449-5756/5761, WHEN APCH CLSD CTC SALT LAKE ARTCC AT 801-320-2568.
FREQUENTLY ASKED
Does 3U9 have a METAR?
No on-field METAR is issued for 3U9. This page uses the nearest reporting station as a reference.
Does 3U9 have a TAF?
No TAF is issued directly for 3U9. Use the nearest TAF-issuing field as a planning reference.
What is the field elevation at 3U9?
3U9 sits at 4,968 ft MSL, which factors into the density-altitude estimate on this page.
Is this an official preflight weather briefing for 3U9?
No. wxdecoder.com is for education and situational awareness only. It is not an official weather briefing or a substitute for official sources, NOTAM review, and pilot judgment.
This app is for aviation weather education, training, and situational awareness only. It is not a substitute for an official weather briefing, approved flight-planning software, flight service, dispatch procedures, current FAA regulations, or pilot judgment. Always verify weather with official sources before flight.