BACK TO DATABASE

KMDH

MDH

Southern Illinois Airport · Murphysboro

Key Facts

Technical summary and operational standards.

ILS Approach StatusILS FREQUENCIES VERIFIED ✅

Field Elevation

411 ft / 125 m

Transition Altitude

18,000 ft

Primary Channel

TWR 125.35 MHz (CARBONDALE TWR)

Runway Summary

18L/36R6,506 ftAsphaltLIGHTED

06/244,164 ftAsphaltLIGHTED

18R/36L3,498 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 Southern Illinois Airport (KMDH), United States. This facility features 3 active runways with an elevation of 411 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

Southern Illinois Airport

ICAO / IATA

KMDH / MDH

Municipality

Murphysboro

Country

Region

US-IL

GPS Coordinates

37.778099, -89.251999

Transition Altitude

18,000 ft

Official Website

—

Wikipedia

Runways & ILS Approach Data

Detailed dimensions and verified landing frequencies.

Runway 18L / 36R

ILSLIGHTED

Crosswind 18L Crosswind 36R TOD VDP

Length: 6,506 ft / 1,983 m
Surface: Asphalt
Heading: 181.2° / 1.2°

RWY 18L

110.90 MHz

ID: MDH | CRS: 182°

RWY 36R

No ILS

Runway 06 / 24

LIGHTED

Crosswind 06 Crosswind 24 TOD VDP

Length: 4,164 ft / 1,269 m
Surface: Asphalt
Heading: 60.6° / 240.6°

RWY 06

No ILS

RWY 24

No ILS

Runway 18R / 36L

LIGHTED

Crosswind 18R Crosswind 36L TOD VDP

Length: 3,498 ft / 1,066 m
Surface: Asphalt
Heading: 181.2° / 1.2°

RWY 18R

No ILS

RWY 36L

No ILS

Nearby Navaids

VOR, NDB, DME stations in the vicinity.

MW · NDB (Jonny)382 kHz

390 ft · Associated: None
37.839100, -88.970703

MWA · VOR-DME (Marion)110,400 kHz

490 ft · Associated: None
37.754200, -89.011703

MD · NDB (Cabbi)388 kHz

411 ft · Associated: KMDH
37.870098, -89.245499

Communication Frequencies

ATC and advisory channels.

ATIS ATIS

119.85 MHz

CNTR KANSAS CITY CNTR

125.30 MHz

CTAF CTAF

125.35 MHz

GND GND

121.80 MHz

TWR CARBONDALE TWR

125.35 MHz

UNIC UNICOM

122.95 MHz

Nearby Airports

Alternatives in the vicinity.

Veterans Airport of Southern Illinois

Cape Girardeau Regional Airport

Barkley Regional Airport

Scott AFB/Midamerica Airport

St Louis Regional Airport

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