# Southern Illinois Airport (MDH / KMDH)

**Southern Illinois Airport** (IATA: MDH, ICAO: KMDH) is a medium airport in Murphysboro, Illinois, United States. It opened in 1950. It has 3 runways; the longest is 6,506 ft (1,983 m).

Web page: https://dromopedia.com/airports/kmdh

## At a glance

- IATA / ICAO: MDH / KMDH
- FAA: MDH
- Type: Medium airport
- Serves: Murphysboro, Illinois, United States
- Opened: 1950
- Elevation: 411 ft / 125 m
- Coordinates: 37.7781, -89.2520
- Runways: 3
- Longest runway: 6,506 ft / 1,983 m
- Instrument procedures: 3 approaches
- Time zone: UTC-6/-5 · America/Chicago
- Website: http://www.siairport.com/
- Wikipedia: https://en.wikipedia.org/wiki/Southern_Illinois_Airport (9 languages)
- Wikidata: https://www.wikidata.org/wiki/Q2304720
- Weather station: KMDH
- Ident: KMDH

## Timeline

- 1950: Southern Illinois Airport opens.

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| 18L/36R | 6,506 ft / 1,983 m | 100 ft / 31 m | Asphalt | 181° / 001° | yes |
| 06/24 | 4,163 ft / 1,269 m | 100 ft / 31 m | Asphalt | 061° / 241° | yes |
| 18R/36L | 3,498 ft / 1,066 m | 60 ft / 18 m | Asphalt | 181° / 001° | yes |

- FAA airport diagram: https://aeronav.faa.gov/d-tpp/2611/05091AD.PDF

## Rankings

Ranked among 48,075 open airports; = marks a shared place.

| Measure | Value | World | Region | Country |
| --- | --- | --- | --- | --- |
| Longest runway | 6,506 ft / 1,983 m | =4,051 of 29,858 | =988 in North America | =748 in US |
| Elevation | 411 ft / 125 m | =28,817 of 43,403 | =13,602 in North America | =11,424 in US |
| Age | Opened 1950 | =3,626 of 15,079 | =2,491 in North America | =2,432 in US |
| Runways | 3 | =151 of 29,978 | =83 in North America | =81 in US |

## Radio frequencies

| Type | Description | MHz |
| --- | --- | --- |
| ATIS | ATIS | 119.850 |
| CNTR | KANSAS CITY CNTR | 125.300 |
| CTAF | CTAF | 125.350 |
| GND | GND | 121.800 |
| TWR | CARBONDALE TWR | 125.350 |
| UNIC | UNICOM | 122.950 |

## Nearby airports

- [MWA](https://dromopedia.com/airports/kmwa.md) Veterans Airport of Southern Illinois · 13 mi / 21 km
- [CGI](https://dromopedia.com/airports/kcgi.md) Cape Girardeau Regional Airport · 42 mi / 68 km
- [PAH](https://dromopedia.com/airports/kpah.md) Barkley Regional Airport · 56 mi / 90 km
- [BLV](https://dromopedia.com/airports/kblv.md) Scott AFB/Midamerica Airport · 62 mi / 99 km
- [ALN](https://dromopedia.com/airports/kaln.md) St Louis Regional Airport · 88 mi / 142 km
- [STL](https://dromopedia.com/airports/kstl.md) St. Louis Lambert International Airport · 90 mi / 146 km

## Sources

- [FAA NASR](https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/): US airport data: FAA National Airspace System Resources (Public Domain (US Government))
- [NOAA Aviation Weather Center](https://aviationweather.gov/data/api/): Weather data: NOAA Aviation Weather Center (Public Domain (US Government))
- [OurAirports](https://ourairports.com/data/): Airport data from OurAirports (Public Domain)
- [Wikidata](https://www.wikidata.org): Structured data from Wikidata (CC0 1.0)
- [timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder): Time zone boundaries © OpenStreetMap contributors, timezone-boundary-builder (ODbL 1.0)
- Every figure with its source: https://dromopedia.com/airports/kmdh/data