1
Runway
3
Frequencies
0
Procedures
0
NOTAMs
Quick Facts
FAA
S85
Elevation
1,953 ft MSL
Runways
1
Frequencies
3
Tower
No
Fuel
100LL
Coordinates
48.154, -104.504
Airport Information
Facility Type
AIRPORT
Elevation
1,953 ft MSL
Control Tower
No
Fuel Types
100LL
ARTCC
SALT LAKE CITY
Coordinates
48.1536, -104.5041
Ownership
Public
Hours of Operation
Current Weather
METAR KSDY 061256Z AUTO 16004KT 10SM CLR M04/M09 A3010 RMK AO2 SLP217 T10391089 FZRANO $
Flight Category
VFR
Wind
160° at 4 kt
Visibility
10+ SM
Temperature
-3.9°C
Dewpoint
-8.9°C
Altimeter
1019.40 inHg
Cloud Cover
CLR
Nearest weather from KSDY (33 NM away)
Observed 2026-05-06 12:56Z
Nearby Weather Cameras
No camera at S85. Showing nearest cameras.
Sidney Airport
South · Camera 3 · 4 cameras total
33 NM away
Wolf Point/Clayton Airport
North · Camera 1 · 4 cameras total
64 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 |
|---|---|---|---|---|
| 08/26 | 3,800 ft | 60 ft | ASPH | MED |
Frequencies
| Type | Frequency | Name |
|---|---|---|
| CTAF | 122.8 | BIG SKY FLD |
| S85 AWOS-3 | 120.000 | - |
| UNICOM | 122.8 | BIG SKY FLD |
Active NOTAMs
No active NOTAMs for S85.
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S85 Operational Overview
Location & Facility
BIG SKY FLD (S85) is a publicly owned airport open to the public located in CULBERTSON, Montana, United States. The field sits at an elevation of 1,953 feet above mean sea level (MSL) at coordinates 48.1536°N, 104.5041°W.
Runways
BIG SKY FLD has 1 runway. The longest runway (08/26) measures 3,800 feet by 60 feet with a asph surface.
Communications & Operations
BIG SKY FLD is a non-towered (pilot-controlled) field. A total of 3 communication frequencies are published for this facility.
Services & Fuel
BIG SKY FLD offers 100LL fuel. Pilots planning fuel stops should confirm availability with the FBO, as hours and pricing may vary.
Weather Cameras
3 FAA Weather Cameras are available near BIG SKY FLD, 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 BIG SKY FLD 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 S85?
S85 is the ICAO identifier for BIG SKY FLD, a public-use airport located in CULBERTSON, Montana, United States.
How many runways does BIG SKY FLD have?
BIG SKY FLD (S85) has 1 runway. See the runway table above for dimensions and surface types.
What is the elevation of S85?
The field elevation of BIG SKY FLD is 1,953 feet above mean sea level (MSL).
Is fuel available at S85?
Yes, BIG SKY FLD offers 100LL fuel.
What are the current weather conditions at S85?
The current flight category at BIG SKY FLD is VFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at S85?
There are currently no active NOTAMs for BIG SKY FLD.
How do I access complete data for S85?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for BIG SKY FLD.
Where is BIG SKY FLD located?
BIG SKY FLD (S85) is located in CULBERTSON, Montana, United States, at an elevation of 1,953 ft MSL.
Does S85 have weather cameras?
S85 does not have a direct weather camera, but there are nearby cameras within range. Sign up for AeroCopilot to view all nearby airport cameras.