Most travelers go from Incheon Airport to Seoul first, then take a high-speed train to Busan. The main decision is which Seoul station you connect through.
Quick route (most common): ICN to Seoul (airport rail/bus), then KTX from Seoul Station to Busan.
The route in three steps
- Take airport rail or an airport bus from Incheon Airport (ICN) into Seoul. For that leg, see Incheon Airport to Seoul.
- Get to your Seoul departure station: Seoul Station if you’re taking KTX, or Suseo if you’re taking SRT.
- Take the high-speed train (KTX or SRT) to Busan.
Two practical route patterns
Option A: Connect via Seoul Station (KTX)
Great default if you’re connecting to KTX. Many tourists find Seoul Station the simplest hub. Once you arrive at/near Seoul Station, take KTX to Busan.
Option B: Connect via Suseo (SRT)
Use this if SRT schedules work better or you want to depart from Suseo. This can make sense if you’re heading toward southeast Seoul anyway, but it’s often less “default” for first-time visitors.
If you’re still deciding between the two stations, read Seoul Station vs Suseo.
Booking (official sites)
Confirm schedules and prices on the official sites:
- Korail (KTX) – Official: Book KTX to Busan.
- SRT (SR) – Official: Book SRT to Busan.
FAQ
Is there a direct train from Incheon Airport to Busan?
Usually, travelers connect through the Seoul area first and then take a high-speed train to Busan.
Should I use KTX or SRT after arriving in Seoul?
Choose based on which departure station is easier for you (Seoul Station vs Suseo) and which schedule fits best.