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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
7/9/26-8/6/26
KCPS VFR
10:53 PM CDT  
Clear
10sm
78°F
73°F
29.88"Hg
040° 4kts
AO2 SLP113 T02560228 $
METAR KCPS 290353Z AUTO 04004KT 10SM CLR 26/23 A2988 RMK AO2 SLP113 T02560228 $
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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
Tue, 7/28 6:20 PM CDT
Tue, 7/28 7:00 PM CDT - Wed, 7/29 7:00 PM CDT
VFR
7:00 PM CDT - 10:00 PM CDT
Scattered 25,000'
6sm
010° 6kts
VFR
10:00 PM CDT - 7:00 PM CDT
Sky Clear
6sm
050° 6kts
TAF KCPS 282320Z 2900/2924 01006KT P6SM SCT250
   FM290300 05006KT P6SM SKC
KCPS
EffectiveExpiresCategoryNOTAM
Domestic
7/28/26
1008Z
10/28/26
2359Z
!CPS 07/051 CPS NAV TOWER LGT (ASR UNKNOWN) 383141.128N0901353.454W (4.5NM SW CPS) UNKNOWN (350FT AGL) U/S 2607281008-2610282359
7/28/26
0118Z
10/26/26
0118Z
!CPS 07/050 CPS OBST TOWER LGT (ASR 1017759) 381822.00N0901623.00W (16.8NM SSW CPS) 1029.9FT (301.8FT AGL) U/S 2607280118-2610260118
7/27/26
2359Z
8/10/26
2359Z
!CPS 07/046 CPS OBST TOWER LGT (ASR 1233160) 381628.20N0901423.40W (18.2NM SSW CPS) 1112.9FT (368.1FT AGL) U/S 2607272359-2608102359
7/26/26
0158Z
7/31/26
2300Z
!CPS 07/043 CPS TWY A2, A3, A4, TWY A BTN WEST RAMP AND TWY A4, TWY B3 BTN APCH END RWY 12L AND TWY B, TWY B4 BTN RWY 12L/30R AND RWY 12R/30L, TWY C2 BTN WEST RAMP AND APCH END RWY 23 EDGE LGT U/S 2607260158-2607312300
7/26/26
0158Z
7/31/26
2300Z
!CPS 07/042 CPS TWY A2, A3, A4, TWY A BTN WEST RAMP AND TWY A4, TWY B3 BTN APCH END RWY 12L AND TWY B, TWY B4 BTN RWY 12L/30R AND RWY 12R/30L, TWY C2 BTN WEST RAMP AND APCH END RWY 23 SIGNS LGT U/S 2607260158-2607312300
7/13/26
1106Z
10/12/26
0400Z
!CPS 07/026 CPS OBST TOWER LGT (ASR 1252459) 381759.60N0902415.30W (20.1NM SW CPS) 784.1FT (201.1FT AGL) U/S 2607131106-2610120400
7/10/26
0426Z
10/8/26
0426Z
!CPS 07/024 CPS OBST TOWER LGT (ASR 1024798) 381900.00N0901440.00W (15.8NM SSW CPS) 910.8FT (259.8FT AGL) U/S 2607100426-2610080426
7/6/26
0931Z
8/6/26
2359Z
!CPS 07/019 CPS OBST TOWER LGT (ASR 1288577) 382808.90N0901733.90W (8.9NM SW CPS) 906.8FT (355.0FT AGL) U/S 2607060931-2608062359
7/1/26
1745Z
7/1/27
1700Z
Runway!CPS 07/004 CPS RWY 30R RWY END ID LGT U/S 2607011745-2707011700
6/26/26
0657Z
9/26/26
2359Z
!CPS 06/033 CPS OBST TOWER LGT (ASR 1008671) 381606.00N0901310.00W (18.4NM S CPS) 994.1FT (272.3FT AGL) U/S 2606260657-2609262359
6/24/26
1416Z
12/31/26
2359Z
!CPS 06/027 CPS TWY C SFC MARKING NOT STD FADED 2606241416-2612312359
6/24/26
1414Z
12/31/26
2359Z
Runway!CPS 06/026 CPS RWY 05/23 SFC MARKING NOT STD FADED 2606241414-2612312359
6/17/26
1100Z
9/30/26
2100Z
!CPS 06/019 CPS TWY B BTN TWY B4 AND TWY B7 WIP CONST DLY 1100-2100 2606171100-2609302100
6/17/26
1100Z
9/30/26
2300Z
!CPS 06/018 CPS TWY B5 BTN RWY 12L/30R AND RWY 12R/30L CLSD 2606171100-2609302300
6/17/26
1100Z
9/30/26
2300Z
!CPS 06/017 CPS TWY B BTN TWY B4 AND TWY B6 CLSD 2606171100-2609302300
6/13/26
0926Z
9/11/26
0926Z
!CPS 06/013 CPS OBST TOWER LGT (ASR 1063165) 382906.80N0900326.40W (6.8NM SE CPS) 862.2FT (284.1FT AGL) U/S 2606130926-2609110926
5/22/26
1400Z
11/30/26
2300Z
!CPS 05/056 CPS TWY B4 CL MARKINGS BTN RWY 12L/30R AND TWY B OBSC 2605221400-2611302300
5/22/26
1359Z
11/30/26
2300Z
!CPS 05/055 CPS TWY B5 HLDG PSN MARKINGS FOR RWY 12L/30R OBSC 2605221359-2611302300
5/22/26
1359Z
11/30/26
2300Z
!CPS 05/054 CPS TWY B7 BTN TWY B AND APCH END RWY 30R CLSD 2605221359-2611302300
5/22/26
1358Z
11/30/26
2300Z
!CPS 05/053 CPS TWY B CL MARKINGS BTN TWY B4 AND TWY B5 REMOVED 2605221358-2611302300
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
7/29/26
1330Z
!FDC 6/9866 CPS SID ST LOUIS DOWNTOWN, CAHOKIA/ST LOUIS, IL.
LINDBERGH NINE DEPARTURE ...
WALNUT RIDGE TRANSITION NA EXCEPT FOR AIRCRAFT EQUIPPED WITH SUITABLE RNAV SYSTEM WITH GPS,
ARG VORTAC OUT OF SERVICE. 2607291330-2608050050EST
4/28/26
1722Z
2/26/27
1722Z
!FDC 6/6476 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. 2604281722-2702261722EST
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
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.