Cheap flights from South Korea to Washington, D.C. from $559

The month of September is, on average, the cheapest month to fly to Washington, D.C. from South Korea, with most prices found around $275. If you’re not able to fly to Washington, D.C. in September, then November is your next best option. Flight prices from South Korea to Washington, D.C. during November average around $345.

On average, the least expensive day to fly to Washington, D.C. from South Korea is on a Friday. momondo users have found tickets for Friday departures for as low as $1,205. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from South Korea to Washington, D.C. for around $1,655.

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

You are more likely to see cheaper flights to Washington, D.C. from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $1,320 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. from South Korea for as low as $845 on momondo.

There are 3 cabin classes available to choose from on South Korea to Washington, D.C. 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 25% on your flight if you consider stops on a South Korea to Washington, D.C. flight.

Alaska Airlines, Singapore Airlines, and United Airlines are the most popular carriers operating from South Korea to Washington, D.C.

Korean Air, United Airlines and Delta are the top three most popular airlines that fly to Washington, D.C. from South Korea according to our data. Korean Air is the first choice among our users, with 30% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% 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 93 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.

Tuesday 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 12% of their flights experiencing any sort of delay.

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

As of May 2026, there are 18 flights per week flying from South Korea to Washington, D.C.. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.