1
Runway
1
Frequency
0
Procedures
0
NOTAMs
Quick Facts
FAA
3U9
Elevation
4,968 ft MSL
Runways
1
Frequencies
1
Tower
No
Fuel
N/A
Coordinates
46.212, -112.108
Airport Information
Facility Type
AIRPORT
Elevation
4,968 ft MSL
Control Tower
No
Fuel Types
None listed
ARTCC
SALT LAKE CITY
Coordinates
46.2117, -112.1076
Ownership
Public
Hours of Operation
Current Weather
METAR KHLN 061253Z 31004KT 10SM CLR M02/M05 A3009 RMK AO2 SLP227 T10221050
Flight Category
VFR
Wind
310° at 4 kt
Visibility
10+ SM
Temperature
-2.2°C
Dewpoint
-5°C
Altimeter
1019.00 inHg
Cloud Cover
CLR
Nearest weather from KHLN (25 NM away)
Observed 2026-05-06 12:53Z
Nearby Weather Cameras
No camera at 3U9. Showing nearest cameras.
Helena Airport
East · Camera 2 · 4 cameras total
25 NM away
MacDonald Pass
NorthEast · Camera 2 · 4 cameras total
26 NM away
12 camera angles available
See all cameras, directions, and nearby airport cameras
Sign up free to view all cameras →Runways
| ID | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 11/29 | 3,675 ft | 72 ft | TURF | - |
Frequencies
| Type | Frequency | Name |
|---|---|---|
| CTAF | 122.9 | BOULDER |
Active NOTAMs
No active NOTAMs for 3U9.
Nearby Airports in Montana
Nearest airports
- 36MT — 16 RANCH
GRASS RANGE
- 36MT — 16 RANCH
GRASS RANGE
- 47MT — 66 RANCH AIRSTRIP
ENNIS
- 47MT — 66 RANCH AIRSTRIP
ENNIS
- 17MT — ABEL RANCH
KALISPELL
Montana airports
3U9 Operational Overview
Location & Facility
BOULDER (3U9) is a publicly owned airport open to the public located in BOULDER, Montana, United States. The field sits at an elevation of 4,968 feet above mean sea level (MSL) at coordinates 46.2117°N, 112.1076°W.
Runways
BOULDER has 1 runway. The longest runway (11/29) measures 3,675 feet by 72 feet with a turf surface.
Communications & Operations
BOULDER is a non-towered (pilot-controlled) field. A total of 1 communication frequencies are published for this facility.
Weather Cameras
3 FAA Weather Cameras are available near BOULDER, providing real-time visual weather conditions updated every 10 minutes. AeroCopilot integrates these cameras with AI-powered weather analysis to help pilots assess visibility and ceiling conditions before departure.
Current Conditions
The current flight category at BOULDER is VFR (Visual Flight Rules — good flying conditions). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations.
Frequently Asked Questions
What is 3U9?
3U9 is the ICAO identifier for BOULDER, a public-use airport located in BOULDER, Montana, United States.
How many runways does BOULDER have?
BOULDER (3U9) has 1 runway. See the runway table above for dimensions and surface types.
What is the elevation of 3U9?
The field elevation of BOULDER is 4,968 feet above mean sea level (MSL).
Is fuel available at 3U9?
No fuel types are currently listed for BOULDER. Contact the FBO directly for availability.
What are the current weather conditions at 3U9?
The current flight category at BOULDER is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at 3U9?
There are currently no active NOTAMs for BOULDER.
How do I access complete data for 3U9?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for BOULDER.
Where is BOULDER located?
BOULDER (3U9) is located in BOULDER, Montana, United States, at an elevation of 4,968 ft MSL.
Does 3U9 have weather cameras?
3U9 does not have a direct weather camera, but there are nearby cameras within range. Sign up for AeroCopilot to view all nearby airport cameras.