KMDH Southern Illinois Carbondale Airport in Murphysboro MSFS https://www.siairport.com/

Southern Illinois Airport (IATA: MDH, ICAO: KMDH, FAA LID: MDH) is a public airport in Jackson County, Illinois, United States. It is located three nautical miles (6 km) northwest of the central business district of Carbondale and east of Murphysboro.

This airport is included in the FAA's National Plan of Integrated Airport Systems for 2021–2025, which categorized it as a general aviation facility.