KTO's June 2026 Cheongju guide says buses 407 and express 747 run from stops outside the airport to downtown Cheongju, including Seongan-gil, in under about 30 minutes; a taxi may take around 20 minutes. Check actual direction, platform and frequency on the day, especially after a delayed flight.

Changes to routes, stops, operating hours or prices should be verified with the transport operator before boarding.