Louisville Muhammad Ali International Airport (IATA: SDF, ICAO: KSDF, FAA LID: SDF), formerly known as simply Louisville International Airport, is a civil-military airport in Louisville in Jefferson County, Kentucky. The airport covers 1,500 acres (6.1 km2) and has three runways. Its IATA airport code, SDF, is based on the airport's former name, Standiford Field. It has no regularly scheduled international passenger flights, but it is a port of entry, as it handles numerous international cargo flights through the United Parcel Service's worldwide air hub through its airline, often referred to as UPS World port.
On January 16, 2019, the Regional Airport Authority voted to change the name of the airport to Louisville Muhammad Ali International Airport in honour of boxer and Louisville native Muhammad Ali. On June 6, 2019, the airport unveiled its new logo, featuring "Ali's silhouette, arms up and victorious, against the background of a butterfly."