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With three runways, two terminals, and 1,000+ acres, St. Louis Downtown Airport (CAO airport code KCPS) and its adjacent Sauget Business Park support 1,800 jobs, while contributing an estimated $584 million to the region. Minutes from the Gateway Arch, KCPS is the St. Louis region’s second busiest general aviation airport and Illinois’ most active outside of Chicago. St. Louis Downtown Airport is truly a premier option for safe, convenient, and unobtrusive air service within the heart of the U.S.

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St. Louis Downtown Airport Advantages


Just minutes from Interstates 64 and 70, KCPS offers quick access to downtown St. Louis, downtown Clayton, MO, and Scott Air Force Base as well as regional landmarks, institutions, and entertainment venues.

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Easy aircraft access to three runways, pilot amenities including a range of FBO services, and outbound services provided by five aircraft charter service companies are just a few reasons why St. Louis Downtown Airport is so pilot-friendly.

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St. Louis Downtown Airport, its award-winning fire department, and a team of onsite, NATA-certified Safety First line technicians boast an impressive record of safety and security for our customers, co-workers, and community.

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Security and discretion guide everything we do at St. Louis Downtown Airport. We work to ensure the privacy and comfort of all our customers, no matter which of our many services they’re using.

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Two FBOs

Two full-service, 24-hour fixed base operators, Ideal Aviation and Jet Aviation, offer a wide range of aeronautical services from available ramp and hangar space, to maintenance and customization of aircraft of all kinds.

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Real Estate

KCPS and the adjacent Sauget Business Park offer 100+ acres of developable land available for office, industrial, or hangar storage use. Business owners and developers have access to a range of business incentives with no personal property taxes.

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