St Louis Downtown Airport satellite view

📍 Cahokia/St Louis⬆ 413 ft3 runways

KCPS · CPS

St Louis Downtown Airport

38.57070°N

-90.15620°W

ARR / DAY

▲ 55.6%

DEP / DAY

▲ 49.4%

St Louis Downtown Airport (KCPS/CPS) is a small general aviation airport located in Cahokia/St Louis, IL. It features 3 runways with the longest being 7,002 feet. SkyMeter has observed roughly 56 arrivals and 76 departures per day on average over the last 7 days.

Safety incidents

Last 7 days · 25 total

REVIEW →

Current weather

Latest METAR observation

17h ago

Temp

77°F

Wind

4 kts

150°

Visib

10+ km

Ceil

—

KCPS 031553Z 15004KT 10SM CLR 25/11 A3029 RMK AO2 SLP254 T02500111 $

Runways

3 installed

7,002 FT MAX

Runway intelligence

Which runway carries the operations, observed over the last 30 days

12R

34% of ops

253 land · 16 TO

30R

16% of ops

116 land · 0 TO

15% of ops

110 land · 2 TO

30L

13% of ops

99 land · 3 TO

12L

12% of ops

85 land · 2 TO

10% of ops

71 land · 2 TO

Runway 12R carries 34% of operations (253 landings, 16 takeoffs) over the last 30 days. The next most-used is 30R at 16%.

Approach quality

Per-runway unstable-approach, go-around, and long-rollout rates

12R 253 landings

UA 20%

30R 116 landings

UA 4%

05 110 landings

UA 6%

30L 99 landings

UA 10%

12L 85 landings

UA 12%

23 71 landings

UA 4%

Approaches to 12R show a 20% unstable-approach rate (50 UA events from 253 landings).Phase B will add wind-correlation: which crosswind band produces most UA events.

Traffic behavior

When the field is busy — hourly + weekday vs weekend

Daily avg

43.1

flights/day · 1,292 total

Busy hour (local)

6pm

also 3pm · 8pm

Day vs night

64%

06:00–20:00 local

Traffic concentrates around 6pm–8pm local, averaging 43.1 flights/day. Weekend volume runs 0.5× weekday (23.9 vs 52.4 daily).

Aircraft character

What's actually flying here — top types over the last 30 days

Activity is led by (24% of 966 flights). Top three types: , , .

Communications Frequencies

2026-05-14

Type	Freq (MHz)	Hours
CTAF	119.925	—
GND	121.800	0630-2200
ATIS	121.450	0630-2200
APCH	123.700	—
APCH	371.875	—
UNICOM	122.950	—
CD/P	118.275	0630-2200
BUUDD ST	119.150	—
FARMR ST	119.150	—
LCL/P	119.925	0630-2200
CD/P	121.800	—
DELMA ST	128.100	—
DIXEE ST	128.100	—
DELMA ST	307.050	—
DIXEE ST	307.050	—
BUUDD ST	335.500	—
FARMR ST	335.500	—
LCL/P	379.300	0630-2200

Airport operations

ARTCC:: ZKC
Fuel:: 100LL

Hourly traffic

Avg movements per hour · local time · last 30 days

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