Ulsan Airport (IATA: USN, ICAO: RKPU) is a domestic airport located in Ulsan, South Korea's largest industrial city and home to major facilities operated by Hyundai Motor Company and Hyundai Heavy Industries. The airport primarily serves routes connecting Ulsan to Jeju Island and other domestic destinations within South Korea. The airport is operated by Korea Airports Corporation and handles a relatively modest volume of passengers compared to major Korean hubs such as Incheon or Gimpo. Its runway and facilities are sized for domestic turboprop and narrow-body jet operations. Ulsan's strategic importance as an industrial hub means it serves business travelers as well as leisure passengers, though much intercity travel is also conducted via the KTX high-speed rail network, which provides competition to air routes.