Originally Posted by
A_Lee
The lounge at GMP is very poor. Just some snacks, no real food, no showers, very basic. The ICN lounge is miles better. I would definitely stay at ICN unless you really wanted another country's stamp in your passport or something like that.
I have flown Gimpo to Shanghai Hongqiao quite a lot. It's an ideal airport for short point-to-point hops to China and Japan and the international terminal is equipped for that purpose.
Tax free shops are very well stocked and the upstairs restaurant landside is one of the best at any airport, serving simple Korean and other Asian foods in a minimalist setting.