International → transit-only domestic

  1. Follow Transfer signs upon arrival at Incheon.
  2. Complete transfer security screening with a boarding pass or e-ticket for the onward flight.
  3. If you do not have a boarding pass, request one at the transfer counter.
  4. Proceed to your gate.

Important: The official airport instructions say passengers making this connection must not leave through the Incheon arrivals hall.

Transit-only domestic → international

  1. Upon reaching Incheon, go to the Level 3 departures area.
  2. Travellers arriving from Daegu must complete transfer security screening.
  3. Prepare your international boarding pass/e-ticket and go to the departure gate.

Allow extra time for T1-to-T2 transfers. Confirm with the airline that your booking actually uses a transit-only domestic service and ask where immigration and baggage processing occur. Do not apply this guide to all regular domestic flight tickets.