Map - Louisville International Airport (Louisville International Airport)

Louisville International Airport (Louisville International Airport)
Louisville Muhammad Ali International Airport, formerly known as simply Louisville International Airport, is a civil-military airport in Louisville in Jefferson County, Kentucky. The airport covers 1500 acres 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 Worldport.

Over 4.2 million passengers and over 5.7 billion pounds (2.89 million tons) of cargo passed through the airport in 2019. It is also the second-busiest in the United States in terms of cargo traffic, and fourth-busiest for such in the world. The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a "primary commercial service" airport since it has over 10,000 passenger boardings (enplanements) per year. Federal Aviation Administration records show the airport had 1,877,861 revenue enplanements in 2018, an increase of 11.46% from 1,684,738 in 2017.

Because of UPS Airlines' operations, Louisville International Airport is the second-busiest cargo airport in the United States, only falling short of FedEx's SuperHub at Memphis International Airport, and also the world's fourth-busiest airport by cargo traffic, behind Shanghai Pudong, Memphis and Hong Kong. The Kentucky Air National Guard's 123d Airlift Wing operates C-130 transport aircraft from the co-located Louisville Air National Guard Base.

On January 16, 2019, the Regional Airport Authority voted to change the name of the airport to Louisville Muhammad Ali International Airport in honor of the 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."

Standiford Field was built by the Army Corps of Engineers in 1941 on a parcel of land south of Louisville that was found not to have flooded during the Ohio River flood of 1937. It was named for Dr. Elisha David Standiford, a local businessman and politician, who was active in transportation issues and owned part of the land. The field remained under Army control until 1947, when it was turned over to the Louisville Air Board for commercial operations.

Until around 1947, Bowman Field was Louisville's main airport. For many years, passenger traffic went through the small brick Lee Terminal at Standiford Field. Today's more modern and much larger facilities were built in the 1980s. Most of the Lee Terminal was later torn down.

When Standiford Field was built by the U.S. Army Corps of Engineers in 1941, it had one 4000 ft runway. The airfield opened to the public in 1947 and all commercial service from Bowman Field moved to Standiford Field. American, Eastern, and TWA were the first airlines and had 1,300 passengers a week. The airlines used World War II barracks on the east side of the field until May 25, 1950, when a proper terminal opened. Lee Terminal could handle 150,000 passengers annually and included 6 new gates, which increased terminal space to 114420 sqft. The three runways (1, 6 and 11) were all 5000 ft.

The April 1957 Official Airline Guide shows 45 weekday departures on Eastern Airlines, 19 American, 9 TWA, 4 Piedmont and 2 Ozark. Scheduled jet flights (Eastern 720s to Idlewild) began in January–February 1962.

In 1970, the terminal again expanded; the main lobby was extended and the 33000 sqft Delta Air Lines concourse was built.

The 1980s brought plans for a new terminal, the Louisville Airport Improvement plan (LAIP). Construction of a new landside terminal designed by Bickel-Gibson Associated Architects Inc. began, costing $35 million with capacity for nearly 2 million passengers in 1985. Parallel runways, needed for expanded UPS operations, were part of the airport expansion. Most of the improvements were completed in the 1990s and the airport was totally renewed. 
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Map - Louisville International Airport (Louisville International Airport)
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