Cheap flights from South Korea to Washington, D.C. from $450

In general, November is the cheapest month to fly from South Korea to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $492. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of November, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $960.

Our data shows that Sunday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $1,350. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from South Korea to Washington, D.C. Dulles Intl Airport for around $1,671.

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $1,239 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from South Korea for as low as $865 on momondo.

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

You could potentially save up to 21% on your flight if you consider stops on a South Korea to Washington, D.C. Dulles Intl Airport flight.

Air China and EVA Air are the most popular carriers operating from South Korea to Washington, D.C. Dulles Intl

Korean Air, United Airlines and Delta are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from South Korea according to our data. Korean Air is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 5 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 14% of flights between South Korea and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 120 minutes.

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

Thursday 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, Korean Air have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

The number of flights available between South Korea and Washington, D.C. Dulles Intl Airport is 2 per day as of March 2026. The most frequent departure time is 10:00AM, with 100% of daily flights leaving at noon.

As of March 2026, 14 flights take off from South Korea and land in Washington, D.C. Dulles Intl Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.