Cheap flights from Washington, D.C. Dulles Intl Airport to South Korea from $387

If you aren’t able to travel to South Korea during the month of October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $1,256.

On average, the least expensive day to fly to South Korea from Washington, D.C. Dulles Intl Airport is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $1,203. 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. Dulles Intl Airport to South Korea for around $1,356.

Flying to South Korea from Washington, D.C. Dulles Intl Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,128 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,270 on average. Flights to South Korea from Washington, D.C. Dulles Intl Airport 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. Dulles Intl - South Korea flight prices

You are more likely to see cheaper flights to South Korea from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $1,451 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. Dulles Intl Airport for as low as $1,196 on momondo.

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

Cathay Pacific, United Airlines, and Air Canada are the most popular carriers operating from Washington, D.C. Dulles Intl to South Korea

AIR PREMIA, Korean Air and Delta are the top three most popular airlines that fly to South Korea from Washington, D.C. Dulles Intl Airport according to our data. AIR PREMIA is the first choice among our users, with 65% of people opting to fly with this airline when traveling to South Korea. Keep in mind that there are 8 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 21% 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 97 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. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, AIR PREMIA have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.

2 flights are operational daily from Washington, D.C. Dulles Intl Airport to South Korea as of October 2026. The most popular departure time for this route is 1:00PM, with 100% of flights per day taking off in the afternoon.

As of October 2026, there are 14 flights per week flying from Washington, D.C. Dulles Intl Airport to South Korea. The most common day of the week flights depart is Mon, with 21% of flights taking off on this day.