Longnan Chengxian Airport (IATA: LNL, ICAO: ZLLN) also known as Longnan Chengzhou Airport is an airport serving the city of Longnan in southern Gansu Province, China. It is located 10 kilometres (6.2 mi) from the seat of Cheng County, which is under the administration of Longnan city. The airport received approval from the State Council of China in July 2012, with a construction budget of 1.2 billion yuan. It was opened on 25 March 2018.