When you search for flights to Cheongju Intl. Airport, Wingie directly gathers and compares the instant data of all airlines with flights from the airports you can depart from. For the date you are looking for, you can see all the flights arriving at Cheongju Intl. Airport together and you can choose the most suitable flight.
You can use Osan Air Base Airport as an alternative to Cheongju Intl. Airport.