Which is a bit late within the working day in order to do A great deal culturally, but you might go into the city (I might suggest Hongdae, mainly because it's closest kind the airport) and luxuriate in a pleasant meal then a walk round the much more energetic area of the town before about to bed rather early (you'll want to get up around 5:30am to have the ability to get within the educate by 6am).
I don't think that Korean Airways features free accommodation for layovers, sadly, even though you 분양 will discover lots of great locations in stay in Seoul that will place you while in the midst of the many motion & near the most crucial sights all through your long layover.
This airport was constructed to share the desire for air transport while in the 21st century and also to function a hub airport in Northeast Asia.[7]