📍 Cahokia/St Louis⬆ 413 ft3 runways
KCPS · CPS
St Louis Downtown Airport
38.57070°N
-90.15620°W
ARR / DAY
71
▲
122.3%
DEP / DAY
82
▲
91.0%
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 71 arrivals and 82 departures per day on average over the last 7 days.
Safety incidents
Last 7 days · 30 total
Current weather
Latest METAR observation
Temp
82°F
Wind
3 kts
310°
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
37% of ops
671 land · 61 TO
30L
23% of ops
413 land · 30 TO
12L
14% of ops
244 land · 1,062 TO
30R
13% of ops
232 land · 235 TO
05
7% of ops
123 land · 38 TO
23
6% of ops
113 land · 102 TO
Runway 12R carries 37% of operations (671 landings, 61 takeoffs) over the last 30 days. The next most-used is 30L at 23%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
12R
671 landings
UA 20%GA 0.4%
30L
413 landings
UA 7%GA 0.7%
12L
244 landings
UA 6%
30R
232 landings
UA 3%
05
123 landings
UA 10%
23
113 landings
UA 8%
Approaches to 12R show a 20% unstable-approach rate (131 UA events from 671 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
85.0
flights/day · 2,551 total
Busy hour (local)
3pm
also 2pm · 1pm
Day vs night
66%
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 |
| FARMR ST | 119.150 | — |
| OTHER | 119.150 | — |
| BUUDD ST | 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 | — |
| OTHER | 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
© SkyMeter ·
All flight data subject to ODbL attribution
·
Updated 22:25 UTC