Abraham Lincoln Capital Airport (IATA: SPI, ICAO: KSPI, FAALID: SPI) is a civil-military public airport in Sangamon County, Illinois. It is three miles (6 km) northwest of downtown Springfield, the capital of Illinois. The airport is owned by the Springfield Airport Authority (SAA).
The airport is home to Capital Airport Air National Guard Station, a 91-acre (370,000 m2) facility on land leased from the Springfield Airport Authority (SAA). It is home to the 183d Fighter Wing (183 FW), an Illinois Air National Guard unit operationally gained by the Air Combat Command (ACC) and State Headquarters, Illinois Air National Guard. Historically a fighter unit, the 183 FW consists of 321 full-time and 800 part-time military personnel (total strength 1,321). On Wednesday, February 10, 2016 the USAF VC-25 (Boeing 747) used as Air Force One landed at Abraham Lincoln Capital Airport becoming the largest known airline type aircraft to land at the airport.
The airport covers 2,300 acres (930 ha) at an elevation of 598 feet (182 m). It has three runways: 4/22 is 8,001 by 150 feet (2,439 x 46 m) concrete; 13/31 is 7,400 by 150 feet (2,256 x 46 m) asphalt; 18/36 is 5,300 by 150 feet (1,615 x 46 m) asphalt/concrete.
In 2009 the airport had 33,903 aircraft operations, average 92 per day: 71% general aviation, 19% air taxi, 10% military, and <1% airline. 169 aircraft were then based at the airport: 78% single-engine, 17% multi-engine, 4% jet and 1% helicopter.