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The Pilots Desk
Small airport

Big Sky Field

ICAO KS85Local S85🇺🇸 Culbertson
Coordinates
48.1533°N, 104.5040°W
Elevation
1,954 ft (596 m)
Type
Small airport
Region
US-MT
Time zone
Denver(UTC-06:00)
Magnetic variation
8° E

Daylight today(Jul 16, 2026, local time)

Civil dawn
04:36
Sunrise
05:15
Sunset
20:54
Civil dusk
21:33

About 15h 39m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.

About Big Sky Field

Big Sky Field is a small airport in Culbertson, United States. It sits at an elevation of 1,954 ft (596 m) and has 1 runway, the longest 3,800 ft / 1,158 m. It observes America/Denver local time. The nearest airport is Steppler Field (US-1094), about 13.2 nm to the sw.

Summary generated from this airport’s structured data — reference only.

Map

Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.

Runways (1)

RunwayLengthWidthSurfaceLightingStatus
08 / 263,800 ft / 1,158 m60 ftAspLightedOpen

Radio frequencies (1)

TypeDescriptionFrequency
CTAFCTAF122.800 MHz

Nearby airports

Great-circle distance and true bearing from Big Sky Field.

Live tracking (FR24) Open in Maps
🇺🇸 More airports in United States📘 Flying in the United States: a pilot's guide

Frequently asked questions

Where is Big Sky Field located?

Big Sky Field is small airport located in Culbertson, United States, at an elevation of 1,954 ft (596 m).

How many runways does Big Sky Field have?

Big Sky Field has 1 runway, the longest being 3,800 ft / 1,158 m.

What time zone is Big Sky Field in?

Big Sky Field is in the America/Denver time zone (UTC-06:00).

What is the magnetic variation at Big Sky Field?

The magnetic variation (declination) at Big Sky Field is approximately 8° E, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.

What airports are near Big Sky Field?

The nearest airport to Big Sky Field is Steppler Field (US-1094), about 13.2 nm to the sw, followed by Stiehl Airport and Flying H Airport.

Is the information on this page suitable for flight planning?

No. Big Sky Field data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.