Gimpo is one of those few diamonds in the rough for people in the know. Formerly the only international airport in Korea it currently only has service to Tokyo Haneda as well as domestic services. But if by chance you happen to be travelling between Seoul and Tokyo you would have to be crazy not to fly this route. Tokyo Haneda is actually *in Tokyo for starters and Gimpo is presently served by a rail link! For comparison one should allow about 4 hours to get to Tokyo Narita Airport and then take either a bus or a taxi for perhaps two hours between Seoul and Inchon (and watch out for Korea's infamous bullet taxis even if they somehow cut the time in half! (You can "do the math" on the speeds they achieve.)) (While Inchon is a wonderful facility for transfer flights it's presently quite weak if one is actually going to/from Korea itself.) Besides the convenience to/from Tokyo Gimpo's international terminal is beautiful and helps one reminisce of the 88 Olympics Seoul's now nostalgic debut on the world stage. I can only presume that more international service is expected as well as the terminal certainly has the excess capacity while the rail link to Inchon won't be done till 2008. More international service would certainly be welcome as far as I'm concerned.