How to Travel from Seoul to Busan in 2026: KTX, Bus or Flight?
Updated October 27, 2026 | South Korea Travel Guide How to Travel from Seoul to Busan in 2026: KTX, Bus or Flight? Planning a trip from Seoul to Busan? Whether you want to relax on Haeundae Beach, explore Gamcheon Culture Village, or enjoy Busan's famous seafood, getting there is easier than you might think. Seoul and Busan are approximately 325 kilometers (202 miles) apart in a straight line, but South Korea's excellent transportation network makes traveling between the two cities convenient. You can take a high-speed KTX train, ride an express bus, or catch a domestic flight. In this 2026 travel guide, we'll compare ticket prices, travel times, booking options, and the best way to reach Busan from Seoul. QUICK ANSWER Best overall: KTX high-speed train Fastest city-to-city option: KTX Cheapest regular option: Express bus Best for flexible departure times: KTX or express bus Best if you're already near Gimpo Airport: Domestic flight 1. Seou...