Cheap flights from Seoul to Washington, D.C. from $489

The month of October is, on average, the cheapest month to fly to Washington, D.C. from Seoul, with most prices found around $822. If you’re not able to fly to Washington, D.C. in October, then November is your next best option. Flight prices from Seoul to Washington, D.C. during November average around $903.

On average, the least expensive day to fly to Washington, D.C. from Seoul is on a Friday. momondo users have found tickets for Friday departures for as low as $1,119. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Seoul to Washington, D.C. for around $1,576.

In the evening is the cheapest time of day to fly from Seoul to Washington, D.C. when you can find flight prices for as low as $1,258. 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 $1,350. 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 Seoul - Washington, D.C. flight prices

You are more likely to see cheaper flights to Washington, D.C. from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around $1,392 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 Seoul for as low as $989 on momondo.

There are 4 cabin classes available to choose from on Seoul 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 26% on your flight if you consider stops on a Seoul to Washington, D.C. flight.

As of October 2026, prices for Seoul to Washington, D.C. flights are approximately 11% more expensive when compared to flights at the same time last year.

Philippine Airlines, Air Canada, and Delta are the most popular carriers operating from Seoul to Washington, D.C.

AIR PREMIA, United Airlines and Korean Air are the top three most popular airlines that fly to Washington, D.C. from Seoul according to our data. AIR PREMIA is the first choice among our users, with 42% 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.

Atlanta (ATL) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

Flights via Toronto (YYZ) offer the lowest average round-trip price of $498.

Flights connecting via Toronto (YYZ) have the shortest average one-way travel time: 16h 25m.

San Francisco (SFO) has the shortest average layover time for this route: 1h 28m.

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

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