Fort Benton Airport

79S · Fort Benton, MT · Non-towered · Print kneeboard

Elevation

2,869 ft MSL

Longest runway

4,300 ft 05/23

Runways

Mag var

14E

AWOS 121.125 CTAF 122.8

Nearby now

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Weather

METAR observed

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TAF forecast

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Sun & FAA night2026-08-04 · night begins 09:29 PM

Event	Local (MDT)	UTC
Morning civil twilight Loggable night ends	05:27 AM	11:27Z
Sunrise	06:03 AM	12:03Z
Sunset	08:54 PM	02:54Z
Evening civil twilight Loggable night begins	09:29 PM	03:29Z

Loggable night (§1.1)

09:29 PM → 05:27 AM

Night currency (§61.57)

09:54 PM → 05:03 AM

Plan a flight from 79S

Destination

TAS (kt)Burn (gph)Reserve (hr)Cruise (ft)Max alt (ft)Wind from (°)Wind (kt)

Winds aloft NOAA forecast · 3,000 to 53,000 ft

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Advisories

NOTAMs

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Pilot reports

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Airspace hazards

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Runways

RWY 14LEFT traffic

Heading: 138° mag · 152° true
Dimensions: 1,700 × 75 ft
TPA: 3,900 ft MSL (≈1,000 AGL) · standard
Surface: Dirt
CTAF: 122.8

Enter the left downwind (heading 318°) on the 45° at 3,900 ft MSL (≈1,000 AGL).

More details — RWY 14

Threshold elev: 2,863 ft
Approach obstacle: Pline, 50 ft, 830 ft from threshold, 0 ft B of centerline — 16:1 slope to clear · penetrates the 20:1 visual approach surface
TDZ elevation: 2,866 ft

Condition: Good.

Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates

Will it fit? Your aircraft's required runway length (from the POH) — checked against every runway here

ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Runway	Length	Your margin
05/23	4,300 ft
14/32	1,700 ft

Prefer one flat page? Full runway details for 79S → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 79S kneeboard →

Comms & NavAids

Communication frequencies

Before taxi

ASOS/AWOS

121.125

Taxi & takeoff

CTAF

122.8

UNICOM

122.8

Also

Flight service

133.4 LOW

By procedure & sector (1 frequencies)

Frequency	Used by
285.4	GREAT FALLS RCAG (LOW)

Source: FAA NASR (current 28-day cycle).

Nearby navigation aids

GTF 115.10

NavAid	Type	Freq · ch	Range	Radial / Dist magnetic
GTF · Great Falls	VORTAC	115.10 · 98X	High	r037° / 39.3 NM

Prefer one flat list? All 79S frequencies →

Charts & procedures

PDF ↗

Chart Supplement ↗

VFR sectional →

Airport info

Airport information

FAA LID: 79S
Coordinates: 47.8451, -110.6360
Elevation: 2,869 ft MSL
Magnetic variation: 14E
Sectional chart: GREAT FALLS
Airport use: Public
Control tower: No
Weather station: AWOS-3PT · 121.125 · ☎ 406-622-5976
ARTCC: SALT LAKE CITY (ZLC)
Flight service (FSS): GREAT FALLS · 122.3 · 1-800-WX-BRIEF
NOTAM facility: GTF
Attendance: UNATNDD
Beacon: white-green (SS-SR)
Segmented circle: Yes
Wind indicator: lighted
Activated: 1940/04
Distance from city: 1 NE

Night operations

Airport lighting: SEE RMK
Rotating beacon: white-green · SS-SR
Pilot-controlled lighting: ACTVT PAPI RWY 05 & 23; MIRL RWY 05/23 - CTAF. on 122.8 — Chart Supplement ↗

Runway lighting aids — 05: 2-light PAPI (left) · 23: 2-light PAPI (left).

FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.

Services fuel · repairs · oxygen · attendance

Fuel available: 100LL
Bottled oxygen: NONE
Bulk oxygen: NONE
Airframe service: NONE
Powerplant service: NONE
Parking: tiedowns
Other services: Agricultural, Instruction, Survey

Ownership & management 2 contacts

Owner

FT BENTON & CHOUTEAU CO

CHOUTEAU COUNTY COURTHOUSE, PO BOX 459, FORT BENTON, MT

406-622-9494

Manager

MIKE MAY

PO BOX 1512, COLONY BAY ROAD, FORT BENTON, MT

(406) 781-9478

Remarks FAA · 3 notes

General

FOR CD CTC SALT LAKE ARTCC AT 801-320-2568.

Lighting

ACTVT PAPI RWY 05 & 23; MIRL RWY 05/23 - CTAF.

Contact

OR CONTACT ANDY TAYLOR @ 406-622-5682.

Nearby airports

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Also nearby: MT77 Peterson Ranch Airport (private) (18 NM) · 5U8 Geraldine Airport (21 NM) · MT01 Owen Bros Airport (private) (26 NM) · 3U8 Big Sandy Airport (28 NM) · MT49 Horner Field (private) (30 NM) · 1MT7 Prill Field (private) (33 NM)

About 79S

Fort Benton Airport (79S) is an airport in Fort Benton, MT, at 2,869 ft MSL. It has 2 runways, the longest 4,300 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 79S, refreshed from the Aviation Weather Center and FAA NASR.

Does 79S have a control tower?

No. Fort Benton Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.

What is the longest runway at 79S?

Fort Benton Airport has 2 runways; the longest is 4,300 ft. See the Runways section for headings, surface, and lighting.

Where is 79S?

Fort Benton Airport is in Fort Benton, MT, at an elevation of 2,869 ft MSL. Coordinates: 47.8451, -110.6360.

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Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 79S in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.