Originally Posted by
mikesaidyes
Unfortunately, it's not possible. You can only access the airside lounges as a transit passenger (in which case when you transfer, you're stuck airside and there's no "out").
You'll have to head directly to immigration and exit to landside. In the AREX train terminal building, there is luggage storage service. Also, when you return to ICN airport - there are FREE showers in the 4th Floor Rest & Relax area you can use. Just show your arriving and your departing boarding pass for free use....if you just show departing one only, it's 3,000W for "originating passengers." I have used these showers before and they are just as nice as any lounge shower.
And FYI you will have around 8:30-12:30ish in Seoul. Take the train into the city to avoid any traffic surprises. Visit the Gyeongbokgung Palace, Gwangjang Market, etc. I actually never do this BUT on my website I have a section of tourist tips....since everyone always asks about one day tours/layovers
https://therealseoul.com/2018/06/15/...port-transfer/
i guess i will head straight out on arex and enjoy a meal or two in Seoul in that short time span. Now that my circumstances have changed, i will just head to hongdae instead of myeongdong. i am aware a lot of shops dont open till 10 or 11 am but thats ok. i will take the arex back at 1230 pm.
hopefully enough time to shower in one of the lounges and grab a quick bite before i board my outbound. i know im gonna be sweating buckets in the humid heat in hongdae.
ive been to seoul almost half a dozen times already so im familiar with what seoul has to offer.