Reference data only — not for flight planning or navigation. Verify with official sources (AIP, NOTAMs, ATC). Full disclaimer
St Louis Regional Airport (KALN/ALN) — Alton/St Louis, United States
At a glance
- Operating hours
- 12:00–03:00 UTC
- Fuel
- 100LL, Jet A
- Tower
- 126
- Runways
- 11/29, 17/35
- Elevation
- 544 ft
Times in UTC. Reference only: verify with the AIP and NOTAMs.
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83%
Data Complete
43 of 52 points
Missing: Contacts
Section Breakdown
Basic Info
7/7
Runways
4/4
Frequencies
4/4
Operations
2/2
Fuel
1/1
Contacts
0/2
Additional Info
3/10
Observed Activity
· Oct 26
41 aircraft observed within 6 NM · busiest hour 22:00Z
2026-10-132026-10-26
Distinct ADS-B aircraft seen within 6 NM below 10,000 ft AGL per UTC day · community-feed coverage varies · not official movement totals
Data last updated:
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See a next to a field? Click it to confirm the info is still correct. Recently verified Outdated — please verify
Basic Airport Information
- ICAO: KALN
- Name: St Louis Regional Airport
- Type: medium_airport
- Category: Domestic
- Latitude: 38.890301
- Longitude: -90.045998
- Elevation: 544 ft
- Country: United States
- Municipality: Alton/St Louis
- IATA Code: ALN
- FAA Code: N/A
- FIR: N/A
- Timezone: America/Chicago
- Distance from City: N/A km
- VFR: Yes
- IFR: No
Runways
Runway 11/29
- Designation: 11/29
- Dimensions: 2469x46m
- Surface: ASP
- PCN: N/A
- Lighting: Lighted
- NAVAIDs: N/A
- Approach Types: N/A
- Remarks: N/A
Runway 17/35
- Designation: 17/35
- Dimensions: 1981x30m
- Surface: ASP
- PCN: N/A
- Lighting: Lighted
- NAVAIDs: N/A
- Approach Types: N/A
- Remarks: N/A
Frequencies
- Tower: 126.000 MHz
- Ground: 120.200 MHz
- Operations: 122.050 MHz
- Traffic/Approach: N/A
- ATIS: 128.000 MHz
Operation Hours
Monday
12:00
–
03:00
Tuesday
12:00
–
03:00
Wednesday
12:00
–
03:00
Thursday
12:00
–
03:00
Friday
12:00
–
03:00
Saturday
12:00
–
03:00
Sunday
12:00
–
03:00
- Extra Hours On Request: Not recorded
- Remarks: N/A
Contacts
- AIS Tel: N/A
- ARO Tel: N/A
- MET Tel: N/A
- Admin Tel: +1 618-259-2531
- Health Tel: N/A
- Police Tel: N/A
- Authorities Tel: N/A
- Website: N/A
- Remarks: N/A
Slots / PPR
- Slot Required: Not recorded
- PPR Required: Not recorded
- PPR Contact: N/A
- Remarks: N/A
Fuel Information
- Fuel Type: 100LL
- Price/L: N/A
- Last Updated: N/A
- Remarks: N/A
- Fuel Type: Jet A
- Price/L: N/A
- Last Updated: N/A
- Remarks: N/A
Immigration
- Port of Entry: Not recorded
- APIS Required: Not recorded
- GAR Required: Not recorded
- Remarks: N/A
Airport Services
No services listed for this airport yet.
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United States Permit Requirements
Fast
Landing: 1d
- Overflight Permit: No
- Landing Permit: Conditional
- Overflight Lead Time: N/A
- Landing Lead Time: 60 minutes minimum (eAPIS manifest before departure); recommend 24-48 hours for CBP port notification
Private / GA Operations:
No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures.
Active NOTAMs
A0526/
caution
Taxiway lighting closed
TWY B BTN TWY B2 AND HANGAR 70 RAMP ACCESS CLSD
2026-10-26 13:05 UTC
2026-11-30 23:59 UTC
A0527/
caution
Apron closed
APRON HANGAR 64 RAMP SOUTH ACCESS, HANGAR 67 RAMP ACCESS CLSD
2026-10-26 13:05 UTC
2026-11-30 23:59 UTC
A527/26
caution
Apron closed
APRON HANGAR 64 RAMP SOUTH ACCESS, HANGAR 67 RAMP ACCESS CLSD
2026-10-26 13:05 UTC
2026-11-30 23:59 UTC
+14 more active NOTAMs
NOTAMs received from the FAA NOTAM feed (last message 2026-10-27 21:10 UTC). This list is built from the feed as NOTAMs are issued and is not checked against the FAA's full list: confirm with FAA NOTAM Search before flight.
View all NOTAMs on Map
Nearby Airports
Airport History
No milestones recorded for St Louis Regional Airport yet. Know when it opened, who built it or a notable event? Add it with a source.
Add a historical factFrequently Asked Questions
- What are the operating hours of KALN?
- St Louis Regional Airport operates from 12:00 to 03:00.
- What is the tower frequency at KALN?
- The tower frequency at St Louis Regional Airport is 126 MHz.
- What fuel is available at KALN?
- St Louis Regional Airport offers 100LL, Jet A.
- Does KALN require landing permits?
- It depends on the flight. No permits required for private non-revenue flights. eAPIS manifest mandatory for all international arrivals/departures. Permit details for United States
- Where is KALN located?
- St Louis Regional Airport (KALN) is located in Alton/St Louis, United States.
- What is the IATA code for KALN?
- The IATA code for St Louis Regional Airport is ALN.
- How long is the runway at KALN?
- The main runway at St Louis Regional Airport (11/29) measures 2469x46m.