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KALN

ALN

St Louis Regional Airport · Alton/St Louis

Key Facts

Technical summary and operational standards.

ILS Approach StatusILS FREQUENCIES VERIFIED ✅

Field Elevation

544 ft / 166 m

Transition Altitude

18,000 ft

Primary Channel

TWR 126.00 MHz (REGIONAL TWR)

Runway Summary

11/298,101 ftAsphaltLIGHTED

17/356,500 ftAsphaltLIGHTED

Details Runways Frequencies Navaids Nearby

Mission Briefing & Tools

Direct calculators and pre-filled resources for this airport.

SkyVector FlightAware Live METAR Satellite

Less math, more flying. Did this save your approach? 🛬

Briefing for St Louis Regional Airport (KALN), United States. This facility features 2 active runways with an elevation of 544 ft. Verified ILS frequencies are available for precision approaches.Maintain a Transition Altitude of 18,000 ft for altimeter reset.

Airport Details

Full geographical and organizational metadata.

Full Name

St Louis Regional Airport

ICAO / IATA

KALN / ALN

Municipality

Alton/St Louis

Country

Region

US-IL

GPS Coordinates

38.890301, -90.045998

Transition Altitude

18,000 ft

Official Website

—

Wikipedia

Runways & ILS Approach Data

Detailed dimensions and verified landing frequencies.

Runway 11 / 29

ILSLIGHTED

Crosswind 11 Crosswind 29 TOD VDP

Length: 8,101 ft / 2,469 m
Surface: Asphalt
Heading: 113.3° / 293.3°

RWY 11

No ILS

RWY 29

108.50 MHz

ID: ALN | CRS: 294°

Runway 17 / 35

LIGHTED

Crosswind 17 Crosswind 35 TOD VDP

Length: 6,500 ft / 1,981 m
Surface: Asphalt
Heading: 173.3° / 353.3°

RWY 17

No ILS

RWY 35

No ILS

Nearby Navaids

VOR, NDB, DME stations in the vicinity.

LM · NDB (Oblio)338 kHz

0 ft · Associated: None
38.800301, -90.474701

ST · NDB (Zumay)404 kHz

0 ft · Associated: KSTL
38.788101, -90.278900

CSX · VOR-DME (Cardinal)116,450 kHz

530 ft · Associated: KSTL
38.752701, -90.360901

STL · VORTAC (St Louis)117,400 kHz

450 ft · Associated: KSTL
38.860699, -90.482399

CVM · NDB (Civic Mem)263 kHz

545 ft · Associated: KALN
38.892300, -90.056297

AL · NDB (Alpos)218 kHz

0 ft · Associated: KALN
38.855099, -89.938202

TOY · VORTAC (Troy)116,000 kHz

570 ft · Associated: KALN
38.739201, -89.918602

Communication Frequencies

ATC and advisory channels.

A/D APP/DEP

124.20 MHz

ATIS ATIS

128.00 MHz

AWOS AWOS 3

128.00 MHz

CLD CLNC DEL

120.20 MHz

CTAF CTAF

126.00 MHz

GND GND

120.20 MHz

RDO RDO

122.05 MHz

TWR REGIONAL TWR

126.00 MHz

UNIC UNICOM

122.95 MHz

Nearby Airports

Alternatives in the vicinity.

St. Louis Lambert International Airport

Scott AFB/Midamerica Airport

Spirit of St Louis Airport

Abraham Lincoln Capital Airport

Southern Illinois Airport

Data Source: OurAirports · Technical Briefing Jan 2026
ILS Data Source: AIP / FAA NASR Cycle Verified