Seoul - Incheon to Gimpo airport via train - anyone used it? | Asia Forum | Fodor's Travel Talk Foru
I'm headed to CJU in Korea this summer. The only other trip I've made to Korea was to ICN and Seoul. Most of the connections are for me to fly US-ICN, then GMP-CJU. I know they installed a train that takes 30 minutes to transfer from one airport to anothe...