Reference only — not for real-world navigation.
K3U4
Saint Labre Mission Airport · Ashland
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
2,909 ft / 887 m
Transition Altitude
18,000 ft
Primary Channel
UNIC 122.80 MHz (CTAF/UNICOM)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
13/31 · 3,830 ft · GVLUNLITFlight Planning
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Welcome to the technical flight briefing for Saint Labre Mission Airport (K3U4), located in Ashland, 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 2,909 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
Saint Labre Mission Airport
ICAO / IATA
K3U4 / —
Municipality
Ashland
Country
Region
US-MT — Montana
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
2,909 ft
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 13 / 31
UNLIT
Runway Length: 3,830 ft / 1,167 m
Runway Width: 95 ft / 29 m
Surface Type: GVL
Heading: 147° / 327°
Runway Width: 95 ft / 29 m
Surface Type: GVL
Heading: 147° / 327°
RWY 13 (147°)
No ILS / Visual Only
RWY 31 (327°)
No ILS / Visual Only
UNIC CTAF/UNICOM
122.80 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026