Boulder Municipal (BDU) is a moderately sized general aviation airport located just east of Boulder, Colorado. It has a single paved runway (4,100 feet) and supports a high volume of flight training, recreational flying, and glider operations. With a large number of based aircraft and regular aviation activity, it serves as a significant regional hub for general aviation, though it has no commercial airline service. 

Calhan Airport (5V4) is a small, publicly owned general aviation airport located in El Paso County near the town of Calhan, Colorado. It has a single turf runway and primarily serves local aviation enthusiasts and agricultural operations. The airport is unattended and has limited infrastructure, reflecting its role as a basic rural airfield.

Centennial Airport (APA) is one of the busiest general aviation airports in the United States, located southeast of Denver in Arapahoe County. It has three runways (the longest over 10,000 feet), full air traffic control services, and supports a wide range of operations including corporate aviation, charter flights, flight training, and medevac. With hundreds of based aircraft and extensive FBO and maintenance facilities, it plays a major role in Colorado’s aviation network and functions as a critical reliever airport for Denver International.

Colorado Air and Space Port (CFO) , located just east of Denver near Watkins, is a general aviation airport with future aspirations for horizontal spaceflight operations. It features two long paved runways (the longest over 8,000 feet), a control tower, and supports a mix of corporate aviation, flight training, aerospace testing, and unmanned aircraft operations. While currently functioning as a general aviation and industrial-use airport, it is licensed by the FAA as a spaceport, making it unique in the region.

Erie Municipal Airport (EIK) is a publicly owned general aviation airport located between Boulder and Denver, serving the town of Erie and surrounding communities. It has a single paved runway (4,700 feet) and supports a mix of flight training, recreational flying, and some corporate traffic. The airport has modern hangars, an FBO, and a growing number of based aircraft, reflecting its role in a rapidly developing suburban area. 

Fort Morgan Municipal Airport (FMM) is a public general aviation airport located a few miles northeast of Fort Morgan, Colorado. It has two paved runways (the primary runway is 5,200 feet) and serves a range of aviation activities including agricultural aviation, flight training, and private flying. The airport is unattended but maintained by the City of Fort Morgan and offers ample space for transient aircraft.

Fremont County Airport (1V6) is a public general aviation airport located west of Cañon City, Colorado. It has one paved runway (5,500 feet) and supports a mix of general aviation, flight training, firefighting operations, and limited business aviation. The airport is county-owned and serves as a key aviation resource for Fremont County and surrounding rural areas.

Greeley–Weld County Airport (GXY) is a public general aviation airport located east of Greeley, Colorado. It features two paved runways (the longest at 10,000 feet), a remote control tower, and supports a wide range of operations including corporate aviation, flight training, air cargo, and agricultural flights. Jointly owned by the City of Greeley and Weld County, the airport has significant infrastructure and serves as a key aviation hub in northern Colorado.

La Junta Municipal Airport (LHX) is a public general aviation airport located just north of La Junta, Colorado. It has two paved runways (the longest over 6,800 feet) and historically served as a military airfield during World War II. Today, it supports general aviation, agricultural operations, and occasional military training exercises, with ample ramp space and minimal congestion.

Limon Municipal Airport (LIC) is a small public general aviation airport located just east of the town of Limon, Colorado. It has one paved runway (4,700 feet) and primarily serves private pilots, agricultural aviation, and emergency services in the surrounding rural region. The airport is town-owned and has limited facilities but plays an important role in regional accessibility.

Meadow Lake Airport (FLY) is a large, privately owned, public-use general aviation airport located northeast of Colorado Springs near Falcon, Colorado. It has one paved runway (6,000 feet) and multiple turf runways, and is home to a significant number of based aircraft, flight schools, and aviation businesses. Operated by the Meadow Lake Airport Association, it is one of the busiest non-towered airports in Colorado.

Northern Colorado Regional Airport (FNL) is a public general aviation airport located between Loveland and Fort Collins, Colorado. It has one long paved runway (8,500 feet), a control tower (remotely operated), and supports general aviation, business aviation, and intermittent commercial service. Jointly owned by the cities of Loveland and Fort Collins, FNL plays a strategic role in regional air transportation and economic development.

Platte Valley Airpark (18V) is a small, public-use general aviation airport located near Hudson, Colorado, in Weld County. It has one paved runway (4,100 feet) and supports recreational flying, flight training, and occasional agricultural operations. The airport is pilot-owned and operated by a local association, with a tight-knit aviation community and limited commercial infrastructure.

Pueblo Memorial Airport (PUB) is a public-use airport located east of Pueblo, Colorado, and serves both general aviation and commercial air service. It has three paved runways (the longest at 10,500 feet), an FAA control tower, and is home to multiple flight training programs including a major U.S. Air Force contractor. The airport is city-owned and plays a significant role in southern Colorado’s aviation network.

Rocky Mountain Metropolitan Airport (BJC) is a public, towered general aviation airport located between Denver and Boulder in Jefferson County, Colorado. It has three paved runways (the longest at 9,000 feet) and supports a high volume of corporate, recreational, and flight training operations. Owned and operated by Jefferson County, BJC is one of the busiest general aviation airports in the state and serves as a major reliever for Denver International Airport.

Silver West Airport (C08) is a small public general aviation airport located near Westcliffe in Custer County, Colorado. It has a single paved runway (7,000 feet) and serves as a gateway to the Sangre de Cristo Mountains, primarily supporting recreational flying, air taxi, and emergency services. The airport is county-owned, with modest infrastructure and scenic appeal.

Springs East Airport (CO49) is a small, privately owned, public-use general aviation airport located east of Colorado Springs near Ellicott, Colorado. It has a single turf runway (4,500 feet) and primarily serves recreational pilots and light general aviation traffic. The airport has minimal infrastructure and no control tower, offering a quiet, rural flying environment.

Vance Brand Airport (LMO) is a public general aviation airport owned and operated by the City of Longmont, Colorado. It has a single paved runway (4,800 feet) and supports a mix of flight training, recreational flying, and light business aviation. The airport is moderately active with a strong local aviation community and several on-site aviation businesses.