Cheap flights from Washington, D.C. to South Korea from $408

If you aren’t able to travel to South Korea during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,192.

On average, the least expensive day to fly to South Korea from Washington, D.C. is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $1,233. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to South Korea for around $1,437.

Flying to South Korea from Washington, D.C. at noon is the least expensive time of day to depart. momondo users have found prices as low as $1,302 when looking at flights departing at noon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,318 on average. Flights to South Korea from Washington, D.C. in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Washington, D.C. Dulles Intl to Incheon Intl for the best Washington, D.C. - South Korea flight prices

You are more likely to see cheaper flights to South Korea from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $1,654 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from Washington, D.C. for as low as $1,372 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. to South Korea flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Japan Airlines, Air Canada, and Delta are the most popular carriers operating from Washington, D.C. to South Korea

Korean Air, AIR PREMIA and Delta are the top three most popular airlines that fly to South Korea from Washington, D.C. according to our data. Korean Air is the first choice among our users, with 43% of people opting to fly with this airline when traveling to South Korea. Keep in mind that there are 9 different airlines that fly to South Korea on a routine basis, so you have a few additional options to choose from.

Historically, on average around 27% of flights between Washington, D.C. and South Korea have experienced a delay on any given week. The average delay length over the past 12 months has been 103 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Monday has historically seen more delays on average compared to the rest of the week.

According to our data, Korean Air have had the least number of delays on this route over the last 12 months; with about 27% of their flights experiencing any sort of delay.

The number of flights available between Washington, D.C. and South Korea is 1 per day as of March 2026. The most frequent departure time is 12:00PM, with 100% of daily flights leaving in the afternoon.

As of March 2026, 8 flights take off from Washington, D.C. and land in South Korea each week. The most common flight departure day for this route is Wed, with 25% of weekly flights taking off on this day.