CPS

St Louis Downtown Airport

ICAO KCPS38.5707°N 90.1562°W413 ft / 126 mSmall airport
On the map

St Louis Downtown Airport (IATA: CPS, ICAO: KCPS) is a small airport in Cahokia/St Louis, Illinois, United States. It opened in Apr 1940. It has 3 runways; the longest is 7,002 ft (2,134 m). In 2025 it handled 12 thousand passengers.

Timeline

1 event · 1940–1940
APR 1940
OpenedSt Louis Downtown Airport opens.
From Wikidata · FAAEvery airfield, 1903–2026

Runways & airfield

Schematic · N · © OpenStreetMap · FAA diagram PDF
12R/30L122° / 302° · LIT
LENGTH7,002 ft2,134 mWIDTH150 ft46 mSURFACEAsphalt
12L/30R122° / 302° · LIT
LENGTH5,301 ft1,616 mWIDTH75 ft23 mSURFACEConcrete
05/23047° / 227° · LIT
LENGTH2,799 ft853 mWIDTH75 ft23 mSURFACEAsphalt

Passengers per year

2016–2025
7K
8K
6K
7K
6K
9K
8K
11K
12K
161718192122232425

Records & rankings

Ranked among 48,011 open airports · world · region · country
Passengers12K (2025)1 · FEWER1 · FEWERMEDIAN · 64KMEDIAN · 64KMORE · 103MMORE · 103M#2,626of 3,974 · #634 North America · #439 USLongest runway7,002 ft2,134 m46 m · SHORT150 ft · SHORTMEDIAN · 975 mMEDIAN · 3,200 ftLONG · 5,300 mLONG · 17,388 ft=3,467of 29,823 · =814 North America · =615 USElevation413 ft126 m-386 m · LOW-1,266 ft · LOWMEDIAN · 240 mMEDIAN · 787 ftHIGH · 4,938 mHIGH · 16,200 ft=28,740of 43,341 · =13,584 North America · =11,410 USAgeOpened 19402026 · NEWEST2026 · NEWESTMEDIAN · 1976MEDIAN · 1976OLDEST · 1902OLDEST · 1902=1,114of 15,079 · =366 North America · =338 USRunways31 · FEWER1 · FEWERMEDIAN · 1MEDIAN · 1MORE · 8MORE · 8=151of 29,943 · =83 North America · =81 US
Scale: share of airports ranked below, best on the right · ties shown as = and a band · passengers are each airport’s latest year on record

Radio frequencies

7 channels
A/DAPP/DEP123.700
ATISATIS121.450
CLDCLNC DEL121.800
CTAFCTAF119.925
GNDGND121.800
TWRDOWNTOWN TWR119.925
UNICUNICOM122.950