I don't know about the best place to buy tickets other than the usual; Expedia, Priceline, and get yourself on the saver newsletters from the airlines. I did want to tell you to not miss going to Korea House in Seoul. My family and I went one evening and thouroughly enjoyed dinner and and evening of Korean music and dance. I was visiting family in Daegu and we also did a day trip up Apsan Mountain, investigating the temples and memorials as we came down. I also loved going to the market places which were always teaming with so much energy. I know you'll enjoy your trip.
