Airport map and runways

St Louis Regional Airport (ALN)

Alton/St Louis, United States · ICAO KALN · IATA ALN

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Map: OpenStreetMap contributors, captured 20 Oct 2026. North is up and the drawing is simplified. Each runway is labelled at its ends.

Location: Alton/St Louis, United States
ICAO code: KALN
IATA code: ALN
Elevation: 544 ft
Longest runway: 8,099 ft (11/29)
Runways: 2
Size class: Medium
Position: 38.8903, -90.0460

About KALN

St Louis Regional Airport (ALN) is a medium airport in Alton/St Louis, United States, with the ICAO code KALN. Its two runways are 11/29 and 17/35. The longer one, 11/29, is 8,099 ft. All of them have hard surfaces. The OpenStreetMap layout shows 33 taxiway segments, 5 aprons and 1 terminal outlines. The route snapshot of 14 Oct 2026 has no scheduled routes for KALN.

Runways

Runways, longest first
Runway	Length	Width	Surface	Lights
11 / 29	8,099 ft	150 ft	Hard	Lit
17 / 35	6,500 ft	100 ft	Hard	Lit

Runway idents and sizes from OurAirports. The runway headings in the source do not always match the idents, so only the idents are shown.

Scheduled routes

The route snapshot of 14 Oct 2026 has no scheduled routes for this airport.

Nearby airports with maps

The closest airports that have a map and a page here.

St. Louis Lambert International Airport (STL) 32 km (20 mi)
St Louis Downtown Airport (CPS) 37 km (23 mi)
Scott AFB/Midamerica Airport (BLV) 43 km (26 mi)
Spirit of St Louis Airport (SUS) 58 km (36 mi)
Washington Regional Airport (KFYG) 89 km (55 mi)
Centralia Municipal Airport (ENL) 93 km (58 mi)
Jacksonville Municipal Airport (IJX) 100 km (62 mi)
Abraham Lincoln Capital Airport (SPI) 111 km (69 mi)

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Sources: airport and runway data from OurAirports (public domain). Map data from OpenStreetMap contributors (ODbL). Routes from Virtual Radar Server standing data (CC0), snapshot of 14 Oct 2026.