St. Louis Regional Airport
St. Louis Regional Airport (logo).png
Airport typePublic
OwnerSt. Louis Regional
ServesAlton, Illinois
LocationBethalto, Illinois
Elevation AMSL544 ft / 166 m
Coordinates38°53′25″N 090°02′46″W / 38.89028°N 90.04611°W / 38.89028; -90.04611Coordinates: 38°53′25″N 090°02′46″W / 38.89028°N 90.04611°W / 38.89028; -90.04611
ALN is located in Illinois
Location of airport in Illinois
ALN is located in the United States
ALN (the United States)
Direction Length Surface
ft m
11/29 8,099 2,469 Asphalt
17/35 6,500 1,981 Asphalt
Aircraft operations (2017)39,828
Based aircraft (2018)78
Sources: FAA[1] and airport website[2]
Diagram for St. Louis Regional (ALN)
Diagram for St. Louis Regional (ALN)

St. Louis Regional Airport (IATA: ALN, ICAO: KALN, FAA LID: ALN) is a public airport four miles (6 km) east of Alton, in Madison County, Illinois, United States.[1] It is in the village of Bethalto but its mailing address is East Alton.[2]

Its operations are paid for by an airport taxation district created in 1946, which collects taxes from property owners in the Madison County townships of Alton, Wood River, Foster and Fort Russell.

F-4 Phantom II on display at the airport with the control tower in the background
F-4 Phantom II on display at the airport with the control tower in the background


Civic Memorial Airport opened in 1946 and received its current name in 1984.[3]


The 2,250 acres (910 ha) airfield sits at 544 ft (166 m) MSL. It has an 8,099 by 150 ft (2,469 by 46 m) runway that runs roughly east–west (11/29) and a 6,500 by 100 ft (1,981 by 30 m) crosswind runway that runs north–south (17/35).[1] With an ILS approach and tower controlled class D airspace, the facility can accommodate a Boeing 747.

For the 12-month period ending April 30, 2017, the airport had 39,828 aircraft operations, an average of 109 per day: 85% general aviation, 13% air taxi, 2% military and less than 1% commercial service. In March 2018, there were 79 aircraft based at this airport: 73 single-engine, 4 multi-engine and 2 jet.[1]

West Star Aviation is the largest fixed-base operations (FBO) company at the airport. In 2008, Premiere Air changed its name to West Star aviation, and the company has remained since that time. The company provides a wide range of services from engine repair, interior and exterior paint services, avionics installation and repair, refurbishing, aircraft part sales, and airframe inspections.[4]

The airport is popular with blimp crews, being a frequent stop for blimps on transcontinental flights across the United States.[5]


  1. ^ a b c d FAA Airport Form 5010 for ALN PDF, effective March 29, 2018.
  2. ^ a b St. Louis Regional Airport, official website
  3. ^ St. Louis Regional Airport: Tradition, official website
  4. ^ West Star Aviation in East Alton
  5. ^ Davenport, Cory (20 December 2017). "Another loud noise explained in the Riverbend". Archived from the original on 19 May 2021. Retrieved 19 May 2021.