Kansas City International Airport is a public airport in Kansas City, Missouri, located 15 miles (24 km) northwest of Downtown Kansas City in Platte County, Missouri. The airport was opened in 1972 and a new complex in the airport was completed in 2023, replacing the old one. MCI replaced Kansas City Municipal Airport (MKC) in 1972, with all scheduled passenger airline flights moved from MKC to MCI. It serves the Kansas City Metropolitan Area and is the primary passenger airport for much of western Missouri and eastern Kansas.

Kansas City, Missouri is the largest city in the U.S. state of Missouri by population and area. Most of the city lies within Jackson County, with portions spilling into Clay, Platte, and Cass counties. It is the central city of the Kansas City metropolitan area, which straddles the Missouri–Kansas state line and has a population of 2,392,035. As of the 2020 census, the city had a population of 508,090, making it the 37th most-populous city in the United States, as well as the sixth-most populous city in the Midwest. Kansas City was founded in the 1830s as a port on the Missouri River at its confluence with the Kansas River from the west. On June 1, 1850, the town of Kansas was incorporated; shortly after came the establishment of the Kansas Territory. Confusion between the two ensued, and the name Kansas City was assigned to distinguish them soon after.