Cheap flights from South Korea to Washington, D.C. from $376

The month of December is, on average, the cheapest month to fly to Washington, D.C. from South Korea, with most prices found around $1,094. If you’re not able to fly to Washington, D.C. in December, then May is your next best option. Flight prices from South Korea to Washington, D.C. during May average around $1,132.

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 $1,126. 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 $1,924.

In the evening is the cheapest time of day to fly from South Korea to Washington, D.C. when you can find flight prices for as low as $1,254. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $1,346. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $1,444 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 $989 on momondo.

There are 4 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.

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

AIR PREMIA, Delta and United Airlines are the top three most popular airlines that fly to Washington, D.C. from South Korea according to our data. AIR PREMIA is the first choice among our users, with 46% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 4 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 10% 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 82 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, AIR PREMIA have had the least number of delays on this route over the last 12 months; with about 8% 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 November 2026. The most frequent departure time is 10:00AM, with 87% of daily flights leaving at noon.

As of November 2026, there are 16 flights per week flying from South Korea to Washington, D.C.. The most common day of the week flights depart is Wed, with 19% of flights taking off on this day.