Lakeland Linder International Airport (IATA: LAL, ICAO: KLAL, FAA LID: LAL) is a public airport five miles southwest of Lakeland, in Polk County, Florida. The Federal Aviation Administration's (FAA) National Plan of Integrated Airport Systems for 2017–2021 categorised it as a national reliever facility for Tampa International Airport. The airport has a Class 1 Federal Aviation Regulation (FAR) Part 139 operating certificate allowing passenger airline flights.
Annually, around March–April, the airport hosts the Sun 'n Fun Aerospace Expo, a six-day fly-in, airshow, and aviation convention. It is the second largest such event in the United States after the Experimental Aircraft Association's (EAA) annual "Air Venture" event each summer at Whitman Regional Airport (OSH) in Oshkosh, Wisconsin.