CPS
Cahokia/St Louis, IL
St Louis Downtown Airport
Small airport
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FIELD ELEVATION
413 ft
LONGEST RUNWAY
7,002 ft
RUNWAYS
3
SURFACE
Asphalt / Concrete
CTAF / UNICOM
119.925
TOWER
119.925
LATITUDE
38°34'14.5"N
LONGITUDE
90°09'22.3"W
ICAO
KCPS
RUNWAYS
RWY
LENGTH
WIDTH
SURFACE
LIGHTS
05/23
2,799 ft
75 ft
Asphalt
Unlighted
12L/30R
5,301 ft
75 ft
Concrete
Lighted
12R/30L
7,002 ft
150 ft
Asphalt
Lighted
RADIO
CTAF
CTAF
119.925
UNIC
UNICOM
122.95
TWR
DOWNTOWN TWR
119.925
GND
GND
121.8
ATIS
ATIS
121.45
CLD
CLNC DEL
121.8
A/D
APP/DEP
123.7
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Where this data comes from
OurAirports open data (public domain), derived from FAA NASR. Retrieved 26 August 2026. Airport diagrams, where shown, are FAA charts, cycle 2608, effective 6 August 2026 to 3 September 2026. Where the FAA publishes none, the runway layout is drawn to scale from published threshold coordinates — a schematic, not a survey. Not for navigation. Check the Chart Supplement and NOTAMs before you fly.