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ST LOUIS DOWNTOWN - Airport Diagram
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KCPS
ICAO KCPSIATA CPSLocal CPS
ST LOUIS DOWNTOWN
PublicPUB

1 miles E of CAHOKIA/ST LOUIS, IL, US
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Status
Operational
Coordinates
38° 34' 13"N 90° 09' 18"W
Elevation
413' MSL
Pattern Alt
1413' MSL
Mag Variation
2°W
Declination
0°
Fuel
JET A, 100LL
FSS
SAINT LOUIS (STL)
Sectional
ST LOUIS
ARTCC
KANSAS CITY (ZKC)
Data Effective
3/19/26-4/16/26
KCPS VFR
9:53 PM CDT  
Broken 11,000'
10sm
75°F
61°F
29.95"Hg
160° 8kts
AO2 SLP138 T02390161 53009 $
METAR KCPS 040253Z 16008KT 10SM BKN110 24/16 A2995 RMK AO2 SLP138 T02390161 53009 $
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KCPS FBOs

KCPS Aircraft Service & Maintenance

Promote Listing
Gulfstream Aerospace Corp.
Phone: (618) 874-4477
Fax: (618) 697-8877
Other: (800) 222-0422
No Rating Available
0 Reviews (Read | Sign In To Write)
Promote Listing
Parks Aviation
Phone: (618) 727-5769
No Rating Available
0 Reviews (Read | Sign In To Write)

KCPS Flight Schools & Aircraft Rental

Promote Listing
Southwestern Illinois College
Phone: (618) 797-7393
No Rating Available
0 Reviews (Read | Sign In To Write)
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Weather and Advisory

ATIS 121.45
ASOS (618) 332-0001

Common

CTAF 119.925
ACTVT MALSR RWY 30L WHEN ATCT CLSD; REIL RWY 30R - CTAF. HIRL RWY 12R/30L PRESET MED INTST WHEN ATCT CLSD. MIRL RWY 12L & 30R NOT AVBL WHEN ATCT CLSD. PAPI RWY 12R & 30L OPR CONSLY.
UNICOM 122.95

Clearance

Clearance Delivery 118.275
Clearance Delivery 121.8
WHEN TWR CLSD

Ground

DOWNTOWN GROUND 121.8
0630-2200

Tower

DOWNTOWN TOWER 119.925
0630-2200

Arrival

BUUDD STAR 119.15
DELMA STAR 128.1
DIXEE STAR 128.1
FARMR STAR 119.15

Approach

SAINT LOUIS APPROACH 123.7

Departure

SAINT LOUIS DEPARTURE 123.7

Terminal Area Forecast

KCPS
Fri, 4/3 9:04 PM CDT
Fri, 4/3 9:00 PM CDT - Sat, 4/4 7:00 PM CDT
VFR
9:00 PM CDT - 3:00 AM CDT
Broken 8,000'
6sm
170° 10kts
MVFR
Temporary 3:00 AM CDT - 6:00 AM CDT
Thunderstorm and Rain
Overcast 1,500'
3sm
Calm
VFR
3:00 AM CDT - 6:00 AM CDT
Light Showers and Rain
Overcast 3,500'
6sm
200° 12kts
Gusts 20kts
IFR
6:00 AM CDT - 11:00 AM CDT
Light Showers and Rain
Overcast 700'
6sm
270° 12kts
MVFR
11:00 AM CDT - 2:00 PM CDT
Overcast 2,000'
6sm
280° 14kts
Gusts 22kts
VFR
2:00 PM CDT - 7:00 PM CDT
Broken 8,000'
6sm
290° 12kts
Gusts 20kts
TAF KCPS 040204Z 0402/0424 17010KT P6SM BKN080
   FM040800 20012G20KT 6SM -SHRA OVC035
   TEMPO 0408/0411 3SM TSRA OVC015CB
   FM041100 27012KT 6SM -SHRA OVC007
   FM041600 28014G22KT P6SM OVC020
   FM041900 29012G20KT P6SM BKN080
KCPS
EffectiveExpiresCategoryNOTAM
Domestic
3/27/26
0101Z
6/26/26
2359Z
!CPS 03/055 CPS OBST TOWER LGT (ASR 1008671) 381606.00N0901310.00W (18.4NM S CPS) 994.1FT (272.3FT AGL) U/S 2603270101-2606262359
3/26/26
1944Z
7/1/26
1700Z
Runway!CPS 03/054 CPS RWY 30R RWY END ID LGT U/S 2603261944-2607011700
3/6/26
0857Z
4/6/26
2359Z
!CPS 03/025 CPS OBST TOWER LGT (ASR UNKNOWN) 383609N0901158W (2.2NM NW CPS) UNKNOWN (240FT AGL) U/S 2603060857-2604062359
3/6/26
0855Z
4/6/26
2359Z
!CPS 03/024 CPS OBST TOWER LGT (ASR UNKNOWN) 383609N0900950W (1.7NM N CPS) UNKNOWN (210FT AGL) U/S 2603060855-2604062359
3/6/26
0854Z
4/6/26
2359Z
!CPS 03/023 CPS OBST TOWER LGT (ASR UNKNOWN) 383605N0901110W (2.1NM NW CPS) UNKNOWN (237FT AGL) U/S 2603060854-2604062359
2/26/26
1537Z
5/29/26
2300Z
!CPS 02/115 CPS TWY B4 CL MARKINGS BTN RWY 12L/30R AND TWY B OBSC 2602261537-2605292300
2/26/26
1536Z
5/29/26
2300Z
!CPS 02/114 CPS TWY B5 HLDG PSN MARKINGS FOR RWY 12L/30R OBSC 2602261536-2605292300
2/26/26
1536Z
5/29/26
2300Z
!CPS 02/113 CPS TWY B7 BTN TWY B AND APCH END RWY 30R CLSD 2602261536-2605292300
2/26/26
1535Z
5/29/26
2300Z
!CPS 02/112 CPS TWY B CL MARKINGS BTN TWY B4 AND TWY B5 REMOVED 2602261535-2605292300
2/10/26
1434Z
4/18/26
2359Z
!CPS 02/073 CPS OBST TOWER LGT (ASR 1044421) 383207.00N0902223.00W (10.5NM WSW CPS) 1650.3FT (1049.9FT AGL) U/S 2602101434-2604182359
1/10/26
2204Z
8/31/26
2359Z
!CPS 01/024 CPS OBST TOWER LGT (ASR 1286785) 382422.20N0902147.30W (13.9NM SW CPS) 901.9FT (321.9FT AGL) U/S 2601102204-2608312359
1/8/26
2311Z
7/8/26
2359Z
!CPS 01/016 CPS OBST BLDG (ASN UNKNOWN) 383740N0901141W (3NM NW CPS) 1055FT (588FT AGL) U/S 2601082311-2607082359
12/31/25
1455Z
6/30/26
2359Z
!CPS 12/088 CPS TWY C SFC MARKING NOT STD 2512311455-2606302359
12/31/25
1455Z
6/30/26
2359Z
Runway!CPS 12/087 CPS RWY 05/23 SFC MARKING NOT STD 2512311455-2606302359
10/10/25
1541Z
!CPS 10/012 CPS OBST TOWER LGT (ASR 1003920) 382856.00N0902353.00W (12.6NM WSW CPS) 1649.3FT (1073.2FT AGL) U/S 2510101541-2610092359EST
8/29/25
0747Z
!CPS 08/031 CPS NAV ILS RWY 30L OM U/S 2508290747-2608262000EST
FDC
3/28/26
0219Z
4/24/26
0219Z
!FDC 6/5285 CPS SID ST LOUIS DOWNTOWN, CAHOKIA/ST LOUIS, IL.
GATEWAY ONE DEPARTURE...
DEPARTURE PROCEDURE FROM OVER STL VORTAC NA EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS,
STL VOR OUT OF SERVICE. 2603280219-2604240219EST
3/28/26
0219Z
4/24/26
0219Z
!FDC 6/5274 CPS SID ST LOUIS DOWNTOWN, CAHOKIA/ST LOUIS, IL.
LINDBERGH NINE DEPARTURE...
OZARK EIGHT DEPARTURE...
PLESS FIVE DEPARTURE...
DEPARTURE PROCEDURE NA EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS,
STL VOR OUT OF SERVICE. 2603280219-2604240219EST
12/2/25
1551Z
!FDC 5/3210 CPS SID ST LOUIS DOWNTOWN, CAHOKIA/ST LOUIS, IL.
LINDBERGH NINE DEPARTURE ...
LITTLE ROCK TRANSITION NA EXCEPT FOR ACFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS. LIT R-018 UNRELIABLE AT WEZRR. 2512021551-2711271551EST
9/23/25
1426Z
5/5/26
1426Z
!FDC 5/9038 CPS SID ST LOUIS DOWNTOWN, CAHOKIA/ST LOUIS, IL.
PLESS FIVE DEPARTURE...
NASHVILLE TRANSITION NA EXCEPT FOR AIRCRAFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS,
BNA VOR OUT OF SERVICE. 2509231426-2605051426EST
5/19/25
2013Z
!FDC 5/2842 CPS IAP ST LOUIS DOWNTOWN, CAHOKIA/ST LOUIS, IL.
ILS OR LOC RWY 30L, AMDT 9E...
CIRCLING CAT A MDA 960/HAA 547.
2505192013-2705192013EST
Yes
ALL
BI-STATE DEVELOPMENT AGENCY
6100 ARCHVIEW DRIVE
CAHOKIA, IL 62206
Phone: 618-337-6060
SANDRA SHORE
6100 ARCHVIEW DRIVE
CAHOKIA, IL 62206
Phone: 618-337-6060
SAINT LOUIS FSS (STL)
Toll Free: 1-800-WX-BRIEF
CPS
--
ACTVT MALSR RWY 30L WHEN ATCT CLSD; REIL RWY 30R - CTAF. HIRL RWY 12R/30L PRESET MED INTST WHEN ATCT CLSD. MIRL RWY 12L & 30R NOT AVBL WHEN ATCT CLSD. PAPI RWY 12R & 30L OPR CONSLY.
N/A
Yes - Lighted
Yes
No
Hanger, Tie-Down
NOT a Landing Rights Airport
NOT an Airport of Entry
Major
Major
None
High Pressure
Charter Service
Pilot Instruction
Aircraft Rental
Aircraft Sales

Runway 05/23

2799 ft. x 75 ft.
ASPH  
Fair 
NONE 
MED 
11/R/C/W/T 
12,000lbs 
-- 
-- 
-- 
  Runway 05 Runway 23
True Heading 47°227°
Traffic Pattern
Markings BSC BSC
Markings Condition POOR POOR
Latitude 38° 34' 20"N 38° 34' 39"N
Longitude 90° 10' 07"W 90° 09' 41"W
Elevation 410' 409'
Threshold Crossing Height -- --
Visual Glide Path Angle -- --
Visual Slope Indicator -- --
Approach Lights
Centerline Lights No No
Runway End Identifier Lights No No

Runway 12L/30R

5301 ft. x 75 ft.
CONC  
Fair 
NONE 
MED 
10/F/D/X/T 
30,000lbs 
30,000lbs 
-- 
-- 
  Runway 12L Runway 30R
True Heading 122°302°
Traffic Pattern Right
Markings NPI NPI
Markings Condition FAIR FAIR
Latitude 38° 34' 26"N 38° 33' 58"N
Longitude 90° 09' 30"W 90° 08' 33"W
Elevation 410' 406'
Threshold Crossing Height -- --
Visual Glide Path Angle -- --
Visual Slope Indicator -- --
Approach Lights
Centerline Lights
Runway End Identifier Lights Yes Yes

Runway 12R/30L

7002 ft. x 150 ft.
ASPH  
Excellent 
GRVD 
HIGH 
 
96,000lbs 
125,000lbs 
182,000lbs 
-- 
  Runway 12R Runway 30L
True Heading 122°302°
Traffic Pattern Right
Markings PIR PIR
Markings Condition GOOD GOOD
Latitude 38° 34' 26"N 38° 33' 50"N
Longitude 90° 09' 54"W 90° 08' 40"W
Elevation 412' 408'
Threshold Crossing Height 49 ft. AGL 53 ft. AGL
Visual Glide Path Angle 3° 3°
Visual Slope Indicator P4L P4L
Approach Lights MALSR
Centerline Lights No No
Runway End Identifier Lights Yes No
A110-1WATERFOWL ON & INVOF ARPT.
A110-3BE ALERT FOR STUDENT TRNG & HEL OPS.
A110-5ALL TWYS EXCP TWY B4 PPR ACFT OVER 120000 LBS.
A110-6SFC CONDS NOT MNTD 2100-0700 LCL.
A26-CCLSD TO SKED ACR OPS GTR THAN 9 PSGR SEATS. UNSKED ACR OPS GTR THAN 30 PSGR SEATS RQR 12 HR PPR.
A30-05/23RWY 05/23 NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS. NO PART 121/PART 380 OPS EXC FOR TAX.
A30-12L/30RRWY 12L/30R NOT AVBL FOR PART 121/PART 380 OPS WITH SKED PAX CARRYING OPS MORE THAN 9 PAX SEATS AND NON-SKED PAX CARRYING OPS MORE THAN 30 PAX SEATS. NO PART 121/PART 380 OPS EXC FOR TAX.
A30-12R/30LW.B.C. GROSS WT (2S) 160.
A37-12R/30L200 WITH PPR.
A39-12R/30LPCR VALUE: 400/F/D/X/T
A42-05_CONDSFC MARKINGS FADED.
A42-23_CONDSFC MARKINGS FADED.
A81-APTACTVT MALSR RWY 30L WHEN ATCT CLSD; REIL RWY 30R - CTAF. HIRL RWY 12R/30L PRESET MED INTST WHEN ATCT CLSD. MIRL RWY 12L & 30R NOT AVBL WHEN ATCT CLSD. PAPI RWY 12R & 30L OPR CONSLY.
ST LOUIS DOWNTOWN (ICAO: KCPS, IATA: CPS) is a public airport located in CAHOKIA/ST LOUIS, IL, US.