📍 Cahokia/St Louis⬆ 413 ft3 runways
KCPS · CPS
St Louis Downtown Airport
38.57070°N
-90.15620°W
ARR / DAY
57
▲
18.0%
DEP / DAY
72
▲
19.7%
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 57 arrivals and 72 departures per day on average over the last 7 days.
Safety incidents
Last 7 days · 4 total
Current weather
Latest METAR observation
Temp
97°F
Wind
4 kts
0°
Visib
10+ km
Ceil
—
Runways
3 installed
05/23
2,799 ft × 75
ASPH-F○ unlitMED
12L/30R
5,301 ft × 75
CON● LITMED
12R/30L
7,002 ft × 150
ASP● LITHIGH
Runway intelligence
Which runway carries the operations, observed over the last 30 days
12R
45% of ops
791 land · 73 TO
30L
16% of ops
284 land · 25 TO
12L
15% of ops
263 land · 1,295 TO
30R
10% of ops
170 land · 105 TO
05
7% of ops
127 land · 100 TO
23
7% of ops
123 land · 38 TO
Runway 12R carries 45% of operations (791 landings, 73 takeoffs) over the last 30 days. The next most-used is 30L at 16%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
12R
791 landings
UA 9%
30L
284 landings
UA 6%
12L
263 landings
UA 6%
30R
170 landings
UA 6%
05
127 landings
UA 12%
23
123 landings
UA 11%
Approaches to 12R show a 9% unstable-approach rate (70 UA events from 791 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
86.5
flights/day · 2,596 total
Busy hour (local)
3pm
also 6pm · 2pm
Day vs night
65%
06:00–20:00 local
Communications Frequencies
2026-06-11| Type | Freq (MHz) | Hours |
|---|---|---|
| CTAF | 119.925 | — |
| TWR | 119.925 | 0630-2200 |
| TWR | 379.300 | 0630-2200 |
| 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 |
| OTHER | 118.275 | 0630-2200 |
| BUUDD ST | 119.150 | — |
| FARMR ST | 119.150 | — |
| OTHER | 119.150 | — |
| LCL/P | 119.925 | 0630-2200 |
| CD/P | 121.800 | — |
| OTHER | 121.800 | — |
| DELMA ST | 128.100 | — |
| DIXEE ST | 128.100 | — |
| OTHER | 128.100 | — |
| DELMA ST | 307.050 | — |
| DIXEE ST | 307.050 | — |
| OTHER | 307.050 | — |
| BUUDD ST | 335.500 | — |
| FARMR ST | 335.500 | — |
| OTHER | 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
© SkyMeter ·
All flight data subject to ODbL attribution
·
Updated 19:34 UTC