Cheap flights from Washington, D.C. to Seoul from $386
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Seoul departing on 8/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Washington, D.C. to Seoul
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Cathay Pacific flights from Washington, D.C. to Seoul
Our best Cathay Pacific deals on Washington, D.C. to Seoul flight tickets
Air China flights from Washington, D.C. to Seoul
Our best Air China deals on Washington, D.C. to Seoul flight tickets
See travel insights to Seoul from
How to get the cheapest flight ticket from Washington, D.C. to Seoul
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Washington, D.C. and Seoul?
What is the cheapest month to fly to Seoul?
The month of March is another great option to travel to Seoul, with average flight prices from Washington, D.C. averaging around $1,033.
What is the cheapest day to depart on your flight to Seoul?
According to our data, Wednesday is the cheapest day to fly to Seoul from Washington, D.C.. The lowest ticket price found for a Wednesday departure recently was $1,548. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Saturday, with ticket prices averaging around $1,716.
What is the cheapest time of day to depart on your flight to Seoul?
Flying to Seoul from Washington, D.C. in the evening is the least expensive time of day to depart. momondo users have found prices as low as $1,179 when looking at flights departing in the evening. At noon is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,751 per ticket.
What is the cheapest Washington, D.C. to Seoul flight route?
Fly from Washington, D.C. Dulles Intl to Incheon Intl for the best Washington, D.C. - Seoul flight prices
How far in advance should I book a flight to Seoul?
You are more likely to see cheaper flights to Seoul from Washington, D.C. when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around $1,432 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from Washington, D.C. for as low as $969 on momondo.
What cabin class options are available on Washington, D.C. to Seoul flights?
There are 4 cabin classes available to choose from on Washington, D.C. to Seoul flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Washington, D.C. to Seoul flights?
You could potentially save up to 17% on your flight if you consider stops on a Washington, D.C. to Seoul flight.
How have Washington, D.C. to Seoul flight prices changed over time?
As of June 2025, prices for Washington, D.C. to Seoul flights are approximately 8% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. to Seoul?
WestJet, Turkish Airlines, and Air Canada are the most popular carriers operating from Washington, D.C. to Seoul
What airlines fly to Seoul?
Korean Air, Air Canada and American Airlines are the top three most popular airlines that fly to Seoul from Washington, D.C. according to our data. Korean Air is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 8 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.
How many flights depart from Washington, D.C. to Seoul on average per day?
As of June 2025, 2 flights take off from Washington, D.C. and land in Seoul each day. The most common flight departure time for this route is 1:00PM, with 100% of daily flights taking off in the afternoon.
How many flights depart from Washington, D.C. to Seoul on average per week?
As of June 2025, there are 14 flights per week flying from Washington, D.C. to Seoul. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.
When to book flights from Washington, D.C. to Seoul
Cheap Washington, D.C. to Seoul (WAS to SEL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Seoul
How far is Washington, D.C. to Seoul by plane?
Seoul is 6932.9 mi away from Washington, D.C.. By plane, this route typically takes 17h 30m.
When did momondo last update prices for flights from Washington, D.C. to Seoul?
Prices for flights from Washington, D.C. to Seoul were last updated today.
How many operators does momondo search for flights from Washington, D.C. to Seoul?
The number of operators available for flights from Washington, D.C. to Seoul is 8 as of June 2025.
How old do you have to be to fly from Washington, D.C. to Seoul?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Seoul.
What documentation or ID do you need to fly to Seoul?
The necessary travel and health documents for your Seoul trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. to Seoul?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. to Seoul is Boeing 777-300ER, representing 97.32% of all bookings. The subsequent popular models are Boeing 747 at 1.46%, Boeing 787-8 Dreamliner at 0.37%, and Boeing 777-300 at 0.37%.
What is the most popular airline from Washington, D.C. to Seoul?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to Seoul is Air Canada, representing 34% of all bookings. The subsequent popular airlines are Korean Air at 28%, Delta at 14%, and American Airlines at 10%.
Best airlines flying from Washington, D.C. to Seoul
Compare and see reviews for airlines that fly from Washington, D.C. to Seoul with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $367 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $591 | Free Cancellation | Rating 7.2 92 reviews | |||
| PriceFrom $759 | Free Cancellation | Rating 8.2 440 reviews | |||
| PriceFrom $809 | Free Cancellation | Rating 7.3 3,848 reviews | |||
| PriceFrom $865 | Free Cancellation | Rating 7.1 9,537 reviews | |||
| PriceFrom $876 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $877 | Free Cancellation | Rating 8.0 7,946 reviews | |||
| PriceFrom $1,074 | Free Cancellation | Rating 8.4 1,088 reviews |
Korean Air Flights From Washington, D.C. to Seoul
Korean Air is one of the most popular airlines flying from Washington, D.C. to Seoul, operating 7 flights/week on average for this route. A good Korean Air flight deal for Washington, D.C. to Seoul starts from $1,074 round-trip, up to an average price of $1,792. Our users have rated Korean Air at 8.4/10.
Delta Flights From Washington, D.C. to Seoul
Delta is also a popular choice for this route. Delta flight deals for Washington, D.C. to Seoul start from as low as $877 round-trip, depending on your selected dates, with average Delta deals seen on momondo around $1,821. Delta operates 7 flights to Seoul from Washington, D.C. in an average week. Users have rated it 8.0/10 across 7,946 reviews.
Why use momondo?
Why should I use momondo to find a flight deal from Washington, D.C. to Seoul?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Seoul. momondo saves you time and could save you money on your trip.
Can I find flights from Washington, D.C. to Seoul with flexible booking policies on momondo?
Flights from Washington, D.C. to Seoul with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Washington, D.C. to Seoul?
momondo provides multiple filters to help you find the best flight to Seoul from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Washington, D.C. to Seoul right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Washington, D.C. to Seoul now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seoul and let you know when they change.