Incheon Airport is about 45 mins to 1 hour to the City Centre of Seoul. Most of the hotels and prime location has Bus Stop. We had a very convenient experience in taking the Limousine bus with two large pieces of luggage.
There are airport bus ticket booths just outside the Arrival area. The buses have scheduled Pick up time so if you missed one, you can simply wait for the next bus.
Check out the view of the Airport to the City journey from the left side of the bus.
Happy Bee Kevin MacLeod (incompetech.com)
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