Reference only — not for real-world navigation.
49IL
Walnut Creek Airport · Somonauk
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
666 ft / 203 m
Transition Altitude
18,000 ft
Primary Channel
—
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
09/27 · 2,200 ft · TurfLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Walnut Creek Airport (49IL), located in Somonauk, 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 666 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
Walnut Creek Airport
ICAO / IATA
49IL / —
Municipality
Somonauk
Country
Region
US-IL — Illinois
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
666 ft
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 09 / 27
LIGHTED
Runway Length: 2,200 ft / 671 m
Runway Width: 100 ft / 30 m
Surface Type: Turf
Heading: 90° / 251°
Runway Width: 100 ft / 30 m
Surface Type: Turf
Heading: 90° / 251°
RWY 09 (90°)
No ILS / Visual Only
RWY 27 (251°)
No ILS / Visual Only
No frequency data available.
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026