AirNav: 3U9 - Boulder Airport

3U9

Boulder Airport
Boulder, Montana, USA

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FAA INFORMATION EFFECTIVE 01 OCTOBER 2026

Location

FAA Identifier:	3U9
Lat/Long:	46-12-42.0000N 112-06-27.4000W 46-12.700000N 112-06.456667W 46.2116667,-112.1076111 (estimated)
Elevation:	4968 ft. / 1514 m (estimated)
Variation:	17E (1985)
From city:	2 miles S of BOULDER, MT
Time zone:	UTC -6 (UTC -7 during Standard Time)
Zip code:	59632

Airport Operations

Airport use:	Open to the public
Activation date:	07/1963
Control tower:	no
ARTCC:	SALT LAKE CITY CENTER
FSS:	GREAT FALLS FLIGHT SERVICE STATION
NOTAMs facility:	GTF (NOTAM-D service available)
Attendance:	UNATNDD
Wind indicator:	yes
Segmented circle:	yes

Airport Communications

CTAF:

122.9

Nearby radio navigation aids

VOR radial/distance	VOR name	Freq	Var
HIAr349/21.2	WHITEHALL VOR/DME	113.70	18E
HLNr183/24.6	HELENA VORTAC	117.70	12E
CPNr052/28.7	COPPERTOWN VOR/DME	116.05	16E

NDB name		Hdg/Dist		Freq		Var		ID
HAUSER		202/25.9		386		12E		HAU	.... .- ..-

Airport Services

Parking:	tiedowns
Airframe service:	NONE
Powerplant service:	NONE
Bottled oxygen:	NONE
Bulk oxygen:	NONE

Runway Information

Runway 11/29

Dimensions:	3675 x 72 ft. / 1120 x 22 m
Surface:	turf, in fair condition HAS 1% TO 3% UPHILL GRADIENT FROM RY 29 END TO RY 11 END.
Runway edge markings:	RY 11/29 THLDS & EDGES MARKED WITH WHITE CONES
	RUNWAY 11	RUNWAY 29
Latitude:	46-12.893308N	46-12.506325N
Longitude:	112-06.790635W	112-06.121153W
Elevation:	4968.0 ft.	4910.0 ft.
Traffic pattern:	left	left
Runway heading:	113 magnetic, 130 true	293 magnetic, 310 true
Markings:	NSTD, in good condition	NSTD, in good condition

Airport Ownership and Management from official FAA records

Ownership:	Publicly-owned
Owner:	TWN OF BOULDER & JEFFERSON CO COUNTY COURTHOUSE BOX H BOULDER, MT 59632 Phone 406-225-4025
Manager:	AL MARTINI PO BOX 2 BOULDER, MT 59632 Phone (406) 431-7519

Additional Remarks

-	NO SNOW REMOVAL
-	NO PHONE ON AIRPORT.
-	-2 FT DRAINAGE DITCH +1 FT BERM WEST SIDE OF RY FULL LENGTH; 43 FT FM RY 11/29 CNTRLN.
-	FOR CD CTC HELENA APCH AT 406-449-5756/5761, WHEN APCH CLSD CTC SALT LAKE ARTCC AT 801-320-2568.

Instrument Procedures

There are no published instrument procedures at 3U9.

Some nearby airports with instrument procedures:

KBTM - Bert Mooney Airport (22 nm SW)
KHLN - Helena Regional Airport (24 nm N)
38S - Deer Lodge-City-County Airport (29 nm W)
3U3 - Bowman Field Airport (32 nm W)
KRVF - Ruby Valley Field Airport (41 nm S)

Loc | Ops | Rwys | IFR | FBO | Links
Com | Nav | Svcs | Stats | Notes

Road maps at: MapQuest Bing Google

Aerial photo
WARNING: Photo may not be current or correct Photo by Brian Handy Photo taken 16-Jul-2014 looking west. Do you have a better or more recent aerial photo of Boulder Airport that you would like to share? If so, please send us your photo.

Sectional chart

Airport distance calculator
Flying to Boulder Airport? Find the distance to fly. From to 3U9

Sunrise and sunset

Times for 06-Oct-2026

	Local (UTC-6)	Zulu (UTC)
Morning civil twilight	07:05	13:05
Sunrise	07:35	13:35
Sunset	18:59	00:59
Evening civil twilight	19:29	01:29

Current date and time

Zulu (UTC)	07-Oct-2026 05:01:42
Local (UTC-6)	06-Oct-2026 23:01:42

METAR

KBTM 22nm SW	070453Z AUTO 17005KT 10SM CLR 06/M03 A3028 RMK AO2 SLP238 T00611033
KHLN 24nm N	070453Z AUTO 26008KT 10SM CLR 13/M04 A3016 RMK AO2 SLP208 T01331039 $
K3U3 32nm W	070455Z AUTO 22005KT 10SM CLR 08/M04 A3024 RMK AO2 T00771036
KRVF 41nm S	070455Z AUTO 00000KT 10SM CLR 08/M04 A3023 RMK A01

TAF

KBTM 22nm SW	062058Z 0621/0718 35009KT P6SM SKC FM070200 VRB04KT P6SM SKC
KHLN 24nm N	061720Z 0618/0718 VRB06KT P6SM SKC FM062000 28010KT P6SM FEW250 FM070100 VRB06KT P6SM SCT250

NOTAMs

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