📍 Cahokia/St Louis⬆ 413 ft3 runways
KCPS · CPS
St Louis Downtown Airport
38.57070°N
-90.15620°W
ARR / DAY
67
▲
12.8%
DEP / DAY
85
▲
9.4%
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 67 arrivals and 85 departures per day on average over the last 7 days.
Safety incidents
Last 7 days · 6 total
Current weather
Latest METAR observation
Temp
99°F
Wind
4 kts
170°
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
42% of ops
1,062 land · 99 TO
12L
18% of ops
450 land · 1,858 TO
30L
17% of ops
431 land · 38 TO
30R
9% of ops
223 land · 146 TO
05
7% of ops
187 land · 140 TO
23
7% of ops
166 land · 61 TO
Runway 12R carries 42% of operations (1,062 landings, 99 takeoffs) over the last 30 days. The next most-used is 12L at 18%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
12R
1,062 landings
UA 9%
12L
450 landings
UA 7%
30L
431 landings
UA 6%
30R
223 landings
UA 6%
05
187 landings
UA 10%
23
166 landings
UA 10%
Approaches to 12R show a 9% unstable-approach rate (94 UA events from 1,062 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
95.4
flights/day · 2,861 total
Busy hour (local)
3pm
also 6pm · 2pm
Day vs night
63%
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 21:13 UTC