St Louis Regional Airport

St Louis Regional Airport (KALN) is a medium airport in Alton/St Louis, IL. Pilots and dispatchers reference it by ICAO code KALN or IATA code ALN. It sits in North America.

St Louis Regional Airport is a regional airport primarily serving general aviation, charter, and corporate flight departments. The 8,099-foot runway means it is well-suited as a dedicated bizjet field, free from airline scheduling pressure.

The longest runway measures 8,099 ft (2,469 m), a heavy-class field. Representative aircraft that operate comfortably here include the Gulfstream G550, Falcon 7X, and Bombardier Global 5500. In practice this most heavy and super-midsize jets operate here without restriction.

St Louis Regional Airport sits near sea level at 544 ft.

Local operations run on America/Chicago. Without scheduled airline traffic, the field tends to be quieter and more flexible for charter and corporate operations — a useful characteristic for early morning, late night, or short-notice flights that would be impractical at a hub.

SkyAccess currently tracks 0 departing and 1 arriving private-jet legs at KALN across the next six months of operator inventory. 1 charter operators have run trips through this field in our recent inventory window.

Regional fields like KALN are a meaningful share of US private aviation — closer to the trip's actual origin or destination than the nearest major hub, with shorter ramp-to-cabin times that are the main reason owners and brokers prefer them.

St. Louis Regional Airport is a public airport four miles (6 km) east of Alton, in Madison County, Illinois, United States. It is in the village of Bethalto but its mailing address is East Alton.