Purdue University Airport is a public-use airport in Tippecanoe County, Indiana, United States. Owned by Purdue University, the airport is 2 nautical miles southwest of the central business district of Lafayette, Indiana, in West Lafayette. Because of the heavy traffic generated by Purdue University and its flight programs, Purdue University Airport is one of the busiest airports in Indiana, second only to the Indianapolis International Airport. The airport is also served by Southern Airways Express, with daily passenger flights to Chicago–O'Hare.