2
Runways
14
Frequencies
0
Procedures
6
NOTAMs
Quick Facts
ICAO
KALN
FAA
ALN
Elevation
543.5 ft MSL
Runways
2
Frequencies
14
Tower
Yes
Fuel
100LL,A
Coordinates
38.890, -90.046
Airport Information
Facility Type
AIRPORT
Elevation
543.5 ft MSL
Control Tower
Yes
Fuel Types
100LL,A
ARTCC
KANSAS CITY
Coordinates
38.8899, -90.0460
Ownership
Public
Hours of Operation
Current Weather
METAR KALN 221350Z 08008KT 10SM OVC017 17/12 A2998
Flight Category
MVFR
Wind
80° at 8 kt
Visibility
10+ SM
Temperature
17°C
Dewpoint
12°C
Altimeter
1015.30 inHg
Cloud Cover
OVC
Observed 2026-05-22 13:50Z
Runways
| ID | Length | Width | Surface | Lights |
|---|---|---|---|---|
| 11/29 | 8,099 ft | 150 ft | ASPH | HIGH |
| 17/35 | 6,500 ft | 100 ft | ASPH | MED |
Frequencies
| Type | Frequency | Name |
|---|---|---|
| ALN AWOS-3PT | 128.0 | - |
| APCH/P DEP/P | 353.9 | SAINT LOUIS TRACON |
| APCH/P DEP/P | 124.2 | SAINT LOUIS TRACON |
| ATIS | XXX.XXX | ST LOUIS RGNL |
| CD/P | XXX.XXX | SAINT LOUIS TRACON |
| CTAF | XXX.XXX | ST LOUIS RGNL |
| DELMA STAR | XXX.XXX | SAINT LOUIS TRACON |
| DELMA STAR | XXX.XXX | SAINT LOUIS TRACON |
| FARMR STAR | XXX.XXX | SAINT LOUIS TRACON |
| FARMR STAR | XXX.XXX | SAINT LOUIS TRACON |
| GND/P | XXX.XXX | ST LOUIS RGNL |
| LCL/P | XXX.XXX | ST LOUIS RGNL |
| LCL/P | XXX.XXX | ST LOUIS RGNL |
| UNICOM | XXX.XXX | ST LOUIS RGNL |
Active NOTAMs
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KALN Operational Overview
Location & Facility
ST LOUIS RGNL (KALN) is a publicly owned airport open to the public located in ALTON/ST LOUIS, Illinois, United States. The field sits at an elevation of 543.5 feet above mean sea level (MSL) at coordinates 38.8899°N, 90.0460°W.
Runways
ST LOUIS RGNL has 2 runways. The longest runway (11/29) measures 8,099 feet by 150 feet with a asph surface. Other runways include 17/35 (6,500 ft, ASPH).
Communications & Operations
ST LOUIS RGNL is a towered airport. ATIS is available on 128.0 MHz. A total of 14 communication frequencies are published for this facility.
Services & Fuel
ST LOUIS RGNL offers 100LL,A fuel. Pilots planning fuel stops should confirm availability with the FBO, as hours and pricing may vary.
Current Conditions
The current flight category at ST LOUIS RGNL is MVFR (Marginal VFR — reduced visibility or ceiling). Weather conditions are updated in real-time from official NOAA Aviation Weather Center observations. There are currently 6 active NOTAMs for this facility.
Frequently Asked Questions
What is KALN?
KALN is the ICAO identifier for ST LOUIS RGNL, a public-use airport located in ALTON/ST LOUIS, Illinois, United States.
How many runways does ST LOUIS RGNL have?
ST LOUIS RGNL (KALN) has 2 runways. See the runway table above for dimensions and surface types.
What is the elevation of KALN?
The field elevation of ST LOUIS RGNL is 543.5 feet above mean sea level (MSL).
Is fuel available at KALN?
Yes, ST LOUIS RGNL offers 100LL,A fuel.
What are the current weather conditions at KALN?
The current flight category at ST LOUIS RGNL is MVFR. See the METAR section above for full decoded weather data including wind, visibility, temperature, and altimeter.
Are there active NOTAMs at KALN?
There are currently 6 active NOTAMs for ST LOUIS RGNL. Sign up for AeroCopilot to read decoded NOTAM text and AI interpretations.
How do I access complete data for KALN?
Sign up for a free AeroCopilot account to access all frequencies, full NOTAM text with AI interpretation, decoded forecasts, and IFR procedure charts for ST LOUIS RGNL.
Where is ST LOUIS RGNL located?
ST LOUIS RGNL (KALN) is located in ALTON/ST LOUIS, Illinois, United States, at an elevation of 543.5 ft MSL.