The KTX high-speed train from Ogeunjang to Cheongju Airport departs as early as 5:50 AM, with the last train scheduled at 9:00 PM. Key stations along the route include Osong and Cheongju. The journey takes approximately 1 hour. Tickets start at ₩22,500 (around $15 USD) for standard class, with options for first class available for additional comfort. To check the timetable and prices, reserve a seat, and book your train ticket online, simply visit our website for easy access.