Cheongju International Airport/Cheongju Air Base (K-59/G-513)

Cheongju International Airport (IATA: CJJ, ICAO: RKTU) is located in Cheongju, the capital of North Chungcheong Province in central South Korea. It serves as both a commercial passenger airport and an active South Korean Air Force base (K-59/G-513), sharing runways and facilities between military and civilian operations. The airport handles domestic routes primarily to Jeju Island and limited international services to destinations in China, Southeast Asia, and Japan. It functions as a regional alternative to the busier Incheon and Gimpo airports in the Seoul metropolitan area, serving passengers from the central provinces of South Korea. Cheongju Air Base has historical significance as a key military installation, hosting ROK Air Force units and having served U.S. military forces during and after the Korean War. The combined civil-military nature of the facility influences its operational capacity and scheduling.