📍 Cahokia/St Louis⬆ 413 ft3 runways
KCPS · CPS
St Louis Downtown Airport
38.57070°N
-90.15620°W
ARR / DAY
72
▲
2.2%
DEP / DAY
90
▼
7.9%
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 72 arrivals and 90 departures per day on average over the last 7 days.
Safety incidents
Last 7 days · 0 total
Current weather
Latest METAR observation
Temp
68°F
Wind
3 kts
180°
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
44% of ops
1,057 land · 169 TO
12L
23% of ops
554 land · 1,917 TO
30L
17% of ops
406 land · 62 TO
30R
8% of ops
193 land · 134 TO
05
5% of ops
133 land · 83 TO
23
3% of ops
77 land · 80 TO
Runway 12R carries 44% of operations (1,057 landings, 169 takeoffs) over the last 30 days. The next most-used is 12L at 23%.
Approach quality
Per-runway unstable-approach, go-around, and long-rollout rates
12R
1,057 landings
UA 9%
12L
554 landings
UA 5%
30L
406 landings
UA 6%
30R
193 landings
UA 5%
05
133 landings
UA 9%
23
77 landings
UA 5%
Approaches to 12R show a 9% unstable-approach rate (92 UA events from 1,057 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
115.2
flights/day · 3,456 total
Busy hour (local)
6pm
also 8pm · 3pm
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 12:48 UTC