Hello!!
Today, I will write down how to get to Seoul from Incheon International Airport Terminal 2.
If you are going to Seoul from Terminal 1, please refer to the article below.
https://todayshappiness.tistory.com/entry/How-to-get-from-Incheon-Airport-to-Seoul-Terminal-1
There is a bus stop and a train stop on the B1 floor of Passenger Terminal 2.
First, go between gates 3 and 4 on the arrival floor. You can see the tourist information center and on the other side there is an escalator and an elevator going down to the B1 floor.
If you go down to the B1 floor, you will see Shake Shack Burger. Go straight past Shake Shack Burger.
There is a ticket vending machine at the end of the street where you can buy train and bus tickets, and you can board the train through the entrance right next to the ticket office.
And if you walk a little past the bus ticket gate, you will see the bus terminal.
I hope you enjoy your trip in Korea. :)