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IATA ALN ICAO KALN Medium airport

St Louis Regional Airport

Alton/St Louis · Illinois · United States

Location

Town
Alton/St Louis
Region
Illinois
Country
United States
Elevation
544 ft
Latitude
38.8903
Longitude
-90.0460

Observed traffic

Departures (30 d)
296
Arrivals (30 d)
168
All observed flights
464
Last seen
October 29, 2026

Facility

Type
Medium airport
Scheduled service
No
Longest runway
8,099 ft
Also known as
—

Runways

RunwayLengthWidth SurfaceLightedHeadings
11 / 29 8,099 ft 150 ft ASP Yes 113° / 293°
17 / 35 6,500 ft 100 ft ASP Yes 173° / 353°

Frequencies

TypeDescriptionMHz
A/D APP/DEP 124.200
ATIS ATIS 128.000
AWOS AWOS 3 128.000
CLD CLNC DEL 120.200
CTAF CTAF 126.000
GND GND 120.200
RDO RDO 122.050
TWR REGIONAL TWR 126.000
UNIC UNICOM 122.950

Wikipedia Airport data from OurAirports (public domain).