Reference only — not for real-world navigation.
KBYG
Johnson County Airport · Buffalo
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
4,968 ft / 1,514 m
Transition Altitude
18,000 ft
Primary Channel
RDO 122.03 MHz (CASPER RDO)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
13/31 · 6,143 ft · AsphaltLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Johnson County Airport (KBYG), located in Buffalo, 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 4,968 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
Johnson County Airport
ICAO / IATA
KBYG / BYG
Municipality
Buffalo
Country
Region
US-WY — Wyoming
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
4,968 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 13 / 31
LIGHTED
Runway Length: 6,143 ft / 1,872 m
Runway Width: 75 ft / 23 m
Surface Type: Asphalt
Heading: 138° / 318°
Runway Width: 75 ft / 23 m
Surface Type: Asphalt
Heading: 138° / 318°
RWY 13 (138°)
No ILS / Visual Only
RWY 31 (318°)
No ILS / Visual Only
ASOS ASOS
135.43 MHz
RDO CASPER RDO
122.03 MHz
UNIC CTAF/UNICOM
122.80 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026