FAA facility Airport

BOULDER

BOULDER, MONTANA FAA 3U9 Open to the public

Open View on OpenStreetMap

Runways

1 record · drawn to relative scale

11/29 3,675 × 72 ft · Turf (fair) · Unlighted

11 29

Runway-end details

Runway 11/29 end details
End	True hdg	ILS	Glide slope aid	Approach lights	Displaced thr	Declared distances
11	130°	—	—	—	—	—
29	310°	—	—	—	—	—

Communications

1 published frequency

Published communications frequencies
Use	Frequency	Hours
CTAF	122.9	—

FAA listing history

Identities observed in NASR snapshots

BOULDER Observed 2024-06-13 through 2026-07-09 3U9

Dates describe available FAA snapshots, not exact opening, closure or construction dates.

Material changes

First observed in NASR cycles

No public material changes are recorded yet.

Facility facts

FAA / ICAO: 3U9
Type: Airport A
Status: Open
Ownership: Publicly owned
Use: Open to the public
Activated: 1963-07
Part 139: Not certificated
Fuel: Not listed
Repair: Airframe: NONE
Powerplant: NONE
Tower: No control tower

Location

City: BOULDER, MT
County: Jefferson
FAA region: Northwest Mountain region
Coordinates: 46.21167, -112.10761
Elevation: 4,968.0 ft

View coordinates on OpenStreetMap

Wildlife strikes

No unambiguous FAA wildlife-strike airport match is available for this facility.

FAA NASR cycle effective 2026-08-06. Operational information changes every cycle — consult current FAA publications, the Chart Supplement and NOTAMs before flight.