Complete Guide to KTX Trains in South Korea

The KTX (Korea Train Express) is South Korea’s flagship high-speed rail system, connecting major cities like Seoul, Busan, Daejeon, and Gwangju. With top speeds of 305 km/h, it allows travelers to reach their destination in record time without compromising comfort. Whether you’re on a tight itinerary or simply prefer a smooth ride, the KTX makes domestic travel more convenient than flying or driving.

The train departs frequently, with departures every 20 to 40 minutes on popular routes. Additionally, stations are well connected to subway lines and local buses, making door-to-door travel seamless.

The KTX network spans a wide-reaching system of high-speed rail lines that connect major cities and regions across South Korea, making it one of the most efficient ways to travel around the country. The most popular lines include:

• Gyeongbu Line (Seoul - Busan)
• Honam Line (Seoul - Mokpo)
• Jeolla Line (Yongsan - Yeosu)
• Gangneung Line (Seoul - Gangneung)
• Gyeongjeon Line (to Jinju)

Major cities on these routes include Seoul, Daejeon, Daegu, Ulsan, Busan, Gwangju, and Iksan. Trains depart from Seoul Station or Yongsan Station, depending on the line. The network enables same-day round trips even for faraway destinations, thanks to travel times as short as 2.5 hours from Seoul to Busan.

You can purchase KTX train tickets through several options:

• At ticket counters in major stations
• Through self-service machines
• Online via KORAIL’s official website
• International-friendly platforms like Rail.Ninja or High-Speed Trains

While all options are available to travelers, foreign tourists often find international booking sites like Rail.Ninja and High-Speed Trains more convenient. These platforms offer interfaces fully in English, accept global payment methods like PayPal or Apple Pay, and allow payment in multiple currencies. This can be especially helpful for avoiding card issues that sometimes occur on the KORAIL site. Booking online in advance is also a smart move, especially on weekends or national holidays, when trains fill up quickly.

KTX trains offer two main classes of service, each designed to meet different comfort levels and travel preferences. Whether you’re taking a short ride or a cross-country journey, both options ensure a smooth and pleasant experience.

Economy Class (Standard):

• Comfortable reclining seats
• Footrests and tray tables
• Overhead storage
• Air conditioning control at each window

First Class:

• More spacious seating
• Extra legroom and wider seats
• Quieter cabin atmosphere
• Complimentary bottled water

Regardless of which class you choose, KTX trains provide a high standard of cleanliness, comfort, and reliability, making them a top choice for fast and enjoyable travel across South Korea.

Traveling with kids on KTX is smooth and convenient, making it a great option for families exploring South Korea. Families can reserve grouped seats in advance, ensuring everyone sits together comfortably during the journey. Many KTX trains and stations are stroller-friendly and equipped with baby changing stations, making on-the-go care easier. Wide aisles and modern restrooms enhance the overall family travel experience, especially on longer rides. Some stations also offer stroller rental services, and staff are always ready to assist with directions or boarding. The peaceful ride, frequent departures, and clear bilingual signage make it ideal for traveling with young children, even for first-time visitors. Parents can relax knowing that the journey is designed with family-friendly convenience in mind.

KTX trains are designed with comfort and convenience in mind, offering a range of modern amenities for all travelers. From practical features like charging outlets and spacious luggage storage to family-friendly options such as baby changing stations, every detail supports a smooth journey.

Whether you’re traveling solo, with family, or in First Class, you’ll find the onboard environment clean, quiet, and thoughtfully equipped. Take a look at the table below to get familiar with what’s available on board.

Major stations such as Seoul, Daejeon, and Busan are modern, well-maintained, and designed with clear signage in both Korean and English, making them easy to navigate for international travelers.

Upon arrival, locate the digital boards or wall displays showing real-time departures to confirm your platform and train number. Your ticket will also include your specific car and seat number. It’s best to arrive at least 15 to 20 minutes in advance to give yourself time to locate the platform, especially in large or unfamiliar stations.

Follow signs marked “Boarding Gate” to access your platform and scan your paper or mobile ticket at the gates. If you have a non-reserved seat, plan to arrive earlier to line up and increase your chances of getting a good spot. Helpful station staff are often available near information booths should you need assistance.