Originally Posted by stupidhead

6 hours isn't really enough time to see Seoul though. You have to look at 20 minutes to get through immigration and customs, 10 minutes to catch the train, an hour to get to Seoul Station, and you should really be at the airport 40 minutes prior to departure, and it's an hour back so you get two/two and a half hours in the city. Maybe you could grab lunch or dinner in Seoul but a tour is practically impossible.