Reference only — not for real-world navigation.
OK18
Grand Isle Airport · Big Cabin
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
636 ft / 194 m
Transition Altitude
18,000 ft
Primary Channel
—
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
17/35 · 1,700 ft · TurfUNLITFlight Planning
Quick Jump to Next Destination
Tip: Search your next airport to quickly compare ILS data.
Welcome to the technical flight briefing for Grand Isle Airport (OK18), located in Big Cabin, 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 636 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
Grand Isle Airport
ICAO / IATA
OK18 / —
Municipality
Big Cabin
Country
Region
US-OK — Oklahoma
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
636 ft
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 17 / 35
UNLIT
Runway Length: 1,700 ft / 518 m
Runway Width: 50 ft / 15 m
Surface Type: Turf
Heading: —° / —°
Runway Width: 50 ft / 15 m
Surface Type: Turf
Heading: —° / —°
RWY 17
No ILS / Visual Only
RWY 35
No ILS / Visual Only
No frequency data available.
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026