Cheongju International Airport (Korean: 청주국제공항; Hanja: 淸州國際空港; RR: Cheongju Gukje Gonghang; MR: Ch'ŏngju Kukche Konghang) (IATA: CJJ, ICAO: RKTU) is an international airport in Cheongwon-gu, Cheongju, South Korea. It also serves the cities of Daejeon and Sejong. In 2018, 2,453,649 passengers used the airport. It also houses the 17th fighter wing of the ROKAF. There is a railway station next to the airport, called Cheongju Airport station, which is on the Chungbuk Line.