📍 Cahokia/St Louis⬆ 413 ft3 runways
KCPS · CPS
St Louis Downtown Airport
38.57070°N
-90.15620°W
ARR / DAY
46
▲
7.0%
DEP / DAY
58
▼
0.5%
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 6,997 feet. SkyMeter has observed roughly 46 arrivals and 58 departures per day on average over the last 7 days.
Safety incidents
Last 7 days · 3 total
Current weather
Latest METAR observation
Temp
73°F
Wind
4 kts
170°
Visib
10+ km
Ceil
—
Runways
3 installed
05/23
2,799 ft × 75
ASPH-F○ unlitMED
12L/30R
3,800 ft × 75
CON● LITMED
12R/30L
6,997 ft × 100
ASP● LITHIGH
Runway intelligence
Which runway carries the operations, observed over the last 30 days
12R
37% of ops
560 land · 44 TO
30L
18% of ops
270 land · 18 TO
30R
14% of ops
209 land · 82 TO
12L
12% of ops
187 land · 1,120 TO
23
10% of ops
156 land · 36 TO
05
10% of ops
147 land · 85 TO
Runway 12R carries 37% of operations (560 landings, 44 takeoffs) over the last 30 days. The next most-used is 30L at 18%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
12R
560 landings
UA 11%
30L
270 landings
UA 6%
30R
209 landings
UA 4%
12L
187 landings
UA 4%
23
156 landings
UA 20%
05
147 landings
UA 14%
Approaches to 12R show a 11% unstable-approach rate (59 UA events from 560 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
81.5
flights/day · 2,444 total
Busy hour (local)
6pm
also 2pm · 3pm
Day vs night
67%
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 17:45 UTC