Reference only — not for real-world navigation.
U46
Big Southern Butte Airport · Blackfoot
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
5,073 ft / 1,546 m
Transition Altitude
18,000 ft
Primary Channel
—
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
01/19 · 2,600 ft · DIRT-FUNLITFlight Planning
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Welcome to the technical flight briefing for Big Southern Butte Airport (U46), located in Blackfoot, United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 1 active runway with a maximum elevation of 5,073 ft. Please note that this field primarily supports VFR and visual approach procedures.Reference the data below for primary communication channels and detailed runway characteristics. Pilots should observe a Transition Altitude of 18,000 ft verified for this field for altimeter reset procedures.
Full Name
Big Southern Butte Airport
ICAO / IATA
U46 / —
Municipality
Blackfoot
Country
Region
US-ID — Idaho
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
5,073 ft
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 01 / 19
UNLIT
Runway Length: 2,600 ft / 792 m
Runway Width: 110 ft / 34 m
Surface Type: DIRT-F
Heading: —° / —°
Runway Width: 110 ft / 34 m
Surface Type: DIRT-F
Heading: —° / —°
RWY 01
No ILS / Visual Only
RWY 19
No ILS / Visual Only
No frequency data available.
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026