St. Louis Regional
ALN · KALN · Alton/St Louis, Illinois · Madison County · map
St. Louis Regional is a public-use airport, 4 miles east of Alton/St Louis, Illinois, 544 feet above sea level. It has 2 runways; the longest, 11/29, is 8,099 feet of asphalt. It has a control tower, fuel (100LL avgas, Jet A) and about 77 general-aviation aircraft based on the field by the FAA's count. The FAA counts about 37,382 takeoffs and landings a year.
Quick answers answers refresh every morning
What is the airport code for St. Louis Regional?
Its FAA code is ALN, and its ICAO code is KALN.
Where is St. Louis Regional?
It is 4 miles east of Alton/St Louis, Illinois, 544 feet above sea level.
How long is the longest runway at St. Louis Regional?
The longest of its 2 runways, 11/29, is 8,099 feet long.
Does St. Louis Regional have a control tower?
Yes, it has a control tower.
What fuel can you buy at St. Louis Regional?
The FAA's airport file lists 100LL avgas, Jet A.
Are there flight schools at St. Louis Regional?
5 flight schools, flying clubs or college flight programmes are based within about 15 miles of it, including Piasa Flyers INC and Pisas Flyers INC. Compare them
Where are the nearest FAA examiners to St. Louis Regional?
6 pilot examiners and 16 aviation medical examiners work within 50 nautical miles. See them by name
Weather and planning now, the forecast, warnings, pilot reports, winds aloft, restrictions
Fetching the weather now, the forecast, the warnings in force, pilot reports and the winds aloft for St. Louis Regional…
Wind map live wind over the area, from Windy.com
Colours show wind speed, the moving lines its direction; drag the time bar for the coming days. Map and forecast by Windy.com.
The airport facts, runways, radio, fuel and services, the FAA's remarks
The airport
- Codes
- FAA ALN · ICAO KALN
- Kind
- Airport · open to the public · publicly owned
- Elevation
- 544 feet above sea level
- Control tower
- A control tower · 7:00 am to 10:00 pm
- Attended
- every day, 7:00 am to 10:00 pm
- Lights
- runway lights see the remarks below; beacon sunset to sunrise
- Fuel and services
- 100LL avgas, Jet A; the services card below
- Notes
- certified for airline service (Part 139)
- On the chart
- St Louis sectional
- Magnetic variation
- 1W
- In the FAA's files since
- April 1940
Runways 2
For understanding the field, not for navigation.
| Runway | Length × width | Surface | Lights |
|---|---|---|---|
| 11/29 | 8,099 × 150 ft | Asphalt, good | High-intensity lights |
| 17/35 | 6,500 × 100 ft | Asphalt, good | Medium-intensity lights |
- Runway 11: PAPI, four lights on the right, tree 35 ft high 1,275 ft from the end
- Runway 29: ILS with DME, medium-intensity approach lights with runway alignment lights (MALSR)
- Runway 17: PAPI, four lights on the left, tree 18 ft high 896 ft from the end
- Runway 35: PAPI, four lights on the left, trees 32 ft high 1,379 ft from the end
Radio frequencies
| Common traffic advisory (CTAF) · Tower | 126.0 | Regional |
| UNICOM | 122.95 | |
| ATIS (recorded airport information) · Aln and aWOS-3PT | 128.0 | Regional |
| Ground · Clearance delivery When tower closed | 120.2 | Regional |
| Approach and departure | 124.2 | Regional |
| Farmr and star | 119.15 | Regional |
| Delma and star | 128.1 | Regional |
Automated weather (AWOS-3PT), by phone 618-259-7231.
Fuel and services as reported to the FAA
- Fuel
- 100LL avgas, Jet A
- Repairs
- airframe and engine: major repairs
- Parking
- hangars, tie-downs
- Oxygen
- bottled oxygen (high-pressure), bulk oxygen (high-pressure)
- Also here
- charter flights, flight instruction, aircraft rental
Other fields with jet fuel nearby: St. Louis Lambert International (17 nm southwest), St. Louis Downtown Airport (20 nm south), Scott Afb/Midamerica St. Louis Airport (23 nm southeast).
The FAA's file records what is sold and done at the field, as the airport manager reports it, not who sells it or the price; fuel sellers (FBOs) are not named in any public file. Airports selling jet fuel in Illinois · avgas.
The FAA's remarks as written in the airport file, spelled out
- Activate approach lights (MALSR) runway 29; runway end identifier lights runway 11 - the common traffic frequency. When the control tower closed PAPI 11, 17, 35; high-intensity runway lights runway 11/29; medium-intensity runway lights runway 17/35 preset on low intst, to incr intst and activate - the common traffic frequency.
- Runway 11 and 17 approach ends closely aligned; verify correct compass hdg prior to departure.
- Index B ffr equip available with 30-MIN prior permission required.
- Migratory bird activity in vicinity of airport september through april.
- Wildlife on and in vicinity of airport
Flights and activity in the air now, the airlines, based aircraft, takeoffs and landings
Activity now checking the volunteer receiver network…
Within ten miles
- Looking…
Arrivals and departures, last hour
- Looking…
From the volunteer receiver network, a few minutes behind at most; aircraft whose owners asked the FAA not to be displayed are left out; no person is named. Open the live map here.
Based aircraft as counted for the FAA, fiscal year 2024
Based aircraft, as a table
| aircraft | |
|---|---|
| single-engine | 68 |
| multi-engine | 5 |
| jets | 4 |
The FAA's count is the general-aviation aircraft kept on the field (singles, twins, business jets, helicopters) from its Terminal Area Forecast, the latest year with an actual count; airline fleets are never counted as based anywhere, so a big airline airport shows a small number. The register section below shows how many aircraft are registered to owners in town, a different measure again.
Takeoffs and landings a year about 37,382, the FAA's fiscal year 2024 (October 2023 to September 2024)
Takeoffs and landings, as a table
| a year | |
|---|---|
| airline | 22 |
| air taxi and commuter | 4,855 |
| general aviation, travelling | 13,050 |
| general aviation, local | 19,323 |
| military | 132 |
Local flights stay in the traffic pattern or nearby, often practice; travelling flights arrive from or leave for somewhere else. Counts at airports without a tower are the FAA's estimates. How this compares nationally: Airports by the numbers.
Who flies and works here aircraft registered in town, the companies, the examiners nearby
Aircraft registered in Alton/St Louis from the FAA register
No aircraft on the register list Alton/St Louis, IL as the owner's town.
Who works here from the FAA's certificate lists and the register
Flight schools, flying clubs and college flight programmes based within about 15 miles:
- Piasa Flyers INC 1 aircraft · East Alton, 3 miles away Piasa Flyers is a nonprofit flying club established in March 2023 at St.
- Pisas Flyers INC 1 aircraft · East Alton, 3 miles away Piasa Flyers is a nonprofit flying club established in March 2023 at St.
- Alton Glasair Flyers LLC 1 aircraft · Alton, 6 miles away
- Hbk Flyers LLC 1 aircraft · Alton, 6 miles away
- Monroe Flying Club INC 1 aircraft · Glen Carbon, 10 miles away
Companies in the same town as this airport, and schools within about 15 miles of it (each placed at the main public airport of its town, or at the town's centre); not every one of them works from this field. All operators · all repair stations · all flight schools · all FBOs.
Examiners and inspectors nearby designated by the FAA · within 50 nautical miles
6 pilot examiners (the FAA's designated pilot examiners, who give the practical tests for pilot certificates) are based within 50 nautical miles: 6 for private pilot, 6 for commercial and instrument, 4 for airline transport pilot, 6 for flight instructor, 2 for sport pilot; 4 for airplanes, 4 for multi-engine airplanes, 2 for helicopters. Also nearby: 3 sport aviation examiners, 16 aviation medical examiners, 1 mechanic examiner, 2 airworthiness representatives (maintenance), 5 engineering representatives, 1 aircraft dispatcher examiner, 18 training center evaluators, 23 aircrew program designees, 1 training center examiner.
- John Scott Saunders private pilot, commercial and instrument, airline transport pilot, flight instructor, instrument instructor, instructor renewals, ground instructor, foreign pilot certificates; airplanes, multi-engine airplanes · St. Charles Flying Service · Portage Des Sioux, MO (16 nm) · (314) 308-5875 · [email protected]
- Lindsey Erin Saunders private pilot, commercial and instrument, flight instructor, instrument instructor; airplanes, multi-engine airplanes · St. Charles Flying Service · Portage Des Sioux, MO (16 nm) · (314) 308-8700 · [email protected]
- Forrest Crawford private pilot, commercial and instrument, flight instructor, instrument instructor, commercial pilot, instructor renewals, military competency, ground instructor; helicopters · Ideal Aviation · Sauget, IL (20 nm) · (765) 401-0777 · [email protected]
- David Walter Chilenski private pilot, commercial and instrument, airline transport pilot, flight instructor, sport pilot, instructor renewals, ground instructor; airplanes, multi-engine airplanes · Saint Louis, MO (21 nm) · (314) 221-2190 · [email protected]
- William Lovell private pilot, commercial and instrument, airline transport pilot, flight instructor, instrument instructor, commercial pilot; helicopters · Winfield, MO (35 nm) · (636) 515-3005 · [email protected]
- Daniel Reed private pilot, commercial and instrument, airline transport pilot, flight instructor, sport pilot, instructor renewals, ground instructor; airplanes, multi-engine airplanes · Wentzville, MO (38 nm) · (314) 497-9829 · [email protected]
All 76 nearby, by kind, with contact details
What each kind does
- DPE: Designated Pilot Examiner: gives the practical tests (checkrides) for pilot certificates and ratings.
- SAE: Sport Aviation Examiner: gives the tests for sport pilot certificates and light-sport aircraft.
- AME: Aviation Medical Examiner: a doctor who issues the medical certificates pilots must hold.
- DME: Designated Mechanic Examiner: tests candidates for the mechanic certificate (airframe and powerplant).
- DAR-T: Designated Airworthiness Representative, maintenance: issues airworthiness certificates and approvals for aircraft in service.
- DER-T: Designated Engineering Representative: approves engineering data for repairs and alterations on the FAA's behalf.
- DADE: Designated Aircraft Dispatcher Examiner: tests candidates for the dispatcher certificate.
- TCE: Training Center Evaluator: gives tests at a simulator training center.
- APD: Aircrew Program Designee: an airline's own check pilot who gives the FAA's tests to the airline's pilots.
- DCTO-E: Designee at a certificated training organisation.
Designees are listed with the name and contact details the FAA publishes for them on its designee locator (read October 10, 2026): the FAA lists them so that pilots, mechanics and companies can find them. Private individuals are not named, the site's policy at this time. A designee who would rather not appear here can ask us through the contact address on the About page. Each designee is placed at the main public airport of the town the FAA lists (or the nearest one to its zip code), so "nearby" means the town, not an exact address. All examiners by state.
Safety record the NTSB's cases at or near this airport
Accidents and incidents at or near this airport NTSB records · 17 since 1982, 1 fatal
Cases the NTSB recorded with this as the nearest airport, newest first. Each opens the full report in plain English. The country as a whole: Where accidents happen.
Nearby within 30 nautical miles
Connections how this airport links to the rest of the register
- NTSB accidents and incidents at or near this airport 17 since 1982 · 1 fatal
- Accidents and incidents in Illinois 2,117 since 1982 · 250 in the last ten years
- Piasa Flyers INC 1 aircraft · flight school
- Pisas Flyers INC 1 aircraft · flight school
- Alton Glasair Flyers LLC 1 aircraft · flight school
- Nearby landing places within 30 nautical miles 8 airports, heliports and seaplane bases
- Public-use airports in Illinois 103 landing places
- Illinois 8,052 aircraft registered
The whole map of how records connect · these connections as data: /graph/airport/ALN.json.
Facts from the FAA's airport file effective October 1, 2026, written out in plain English; weather from the National Weather Service's aviation weather service; registered aircraft from the FAA register as of October 27, 2026; accidents from the NTSB's public database. Owners are shown only when they are an organisation; no person is named. Check the official sources before a flight: this page is for understanding an airport, not for planning one.