The best price found from United States to South Korea is on March 6th, 2017, travelling with Aeroflot. See more options, compare prices and book: search flights.
Good deals can be found online and with discount agencies. Korean airport departure taxes are included in the ticket price.
Prices of flights from Korea can increase 50% in July and August, and special offers are less common during holiday periods. The peak period for outbound flights is early August, when it can be difficult to find a seat.
Most international flights leave from Incheon International Airport, connected to Seoul by road (80 minutes) and train (60 minutes). There are also some international flights (mainly to China and Japan) from Gimpo International Airport, Gimhae International Airport for Busan and Jeju International Airport. Go to www.airport.co.kr for information on all the airports.