Scott AFB/Midamerica Airport Guide
MidAmerica St. Louis Airport sits in St. Clair County, Illinois, on the east side of the St. Louis metropolitan area. The airport address is in Mascoutah, and the field is about 33 km from downtown St. Louis. It shares its airfield with Scott Air Force Base under a joint-use agreement signed in 1991. The FAA certified the civil airport in October 1997, and it opened for operation in May 1998.
The airport has two runways. Runway 14L/32R is 3,048 m long and runway 14R/32L is 2,440 m long, both with instrument landing systems. The long runway handles large aircraft, and the airfield is set up for military and cargo traffic as well as passenger service.
Scheduled passenger service is limited. Allegiant Air has flown here since 2005, apart from a pause between 2009 and 2012, and is the only scheduled airline. Its nonstop routes serve leisure destinations, mainly in Florida, plus Las Vegas, Myrtle Beach, Savannah and Gulf Shores, Alabama. The airport reported a record 384,000 passengers in 2025. Earlier carriers, including Pan American Airways, Great Plains Airlines and TransMeridian Airlines, ceased operations.
Services
4 of 6 availableCompare 4 listed options at Scott AFB/Midamerica Airport, spanning parking, car rentals, hotels and shuttles. Each guide sets out locations, distance from the airport, key features and links to book direct, so you can weigh cost against convenience before you fly. Select a service below to see every provider we track for Scott AFB/Midamerica Airport.
Location
Key facts
- Size
- 384K passengers (2025)2 runwaysopened 1998
- Location
- 38.545, -89.835
- Operator
- St. Clair County, Illinois (operated by the St. Clair County Public Building Commission)
- Links
- Wikipedia ↗
Terminals
1 terminalScott AFB/Midamerica Airport has 1 passenger terminal — Passenger Terminal, handling domestic flights for around 1 airlines. Check which terminal your airline uses before you travel, as check-in, security and boarding points differ between them, and moving from one to another can take time.
- Passenger TerminalDomestic
Allegiant Air
Nearby cities
4 citiesScott AFB/Midamerica Airport is closest to Mascoutah (10 km southeast), and also serves O'Fallon, Belleville and other nearby areas. With 4 towns and cities within reach, it is a practical gateway for the wider region. Distances shown are straight-line from the airport, so allow extra time for road transfers, traffic and parking.
- Mascoutah10 km southeast
- O'Fallon14 km northwest
- Belleville22 km west
- St. Louis50 km west
Frequently Asked Questions
What are the airport codes for Scott AFB/Midamerica Airport?
What are the airport codes for Scott AFB/Midamerica Airport?
Where is Scott AFB/Midamerica Airport located?
Where is Scott AFB/Midamerica Airport located?
What services are available at Scott AFB/Midamerica Airport?
What services are available at Scott AFB/Midamerica Airport?
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