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.
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Cathay Pacific flights from Washington, D.C. to Incheon Intl Airport
Our best Cathay Pacific deals on Washington, D.C. to Incheon Intl Airport flight tickets
Air China flights from Washington, D.C. to Incheon Intl Airport
Our best Air China deals on Washington, D.C. to Incheon Intl Airport flight tickets
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How to get the cheapest flight ticket from Washington, D.C. to Incheon Intl Airport
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 Incheon Intl Airport?
What is the cheapest month to fly to Incheon Intl Airport?
The cheapest month to fly to Incheon Intl Airport from Washington, D.C. is in January. Flight prices, which tend to average around $902, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of January, then departing from Washington, D.C. during the month February is also very affordable. Most momondo users find prices during this month for around $1,072.
What is the cheapest day to depart on your flight to Incheon Intl Airport?
The cheapest day to depart from Washington, D.C. to Incheon Intl Airport is on a Wednesday when prices can be found for as low as $1,549. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $1,716. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.
What is the cheapest time of day to depart on your flight to Incheon Intl Airport?
In the evening is the cheapest time of day to fly from Washington, D.C. to Incheon Intl Airport when you can find flight prices for as low as $1,169. Flying to Incheon Intl Airport in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $1,750 on average. Flights to Incheon Intl Airport from Washington, D.C. at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.
What is the cheapest Washington, D.C. to Incheon Intl flight route?
Fly from Washington, D.C. Dulles Intl to Incheon Intl for the best Washington, D.C. - Incheon Intl flight prices
How far in advance should I book a flight to Incheon Intl Airport?
You are more likely to see cheaper flights to Incheon Intl Airport from Washington, D.C. when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport 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 Incheon Intl Airport from Washington, D.C. for as low as $969 on momondo.
What cabin class options are available on Washington, D.C. to Incheon Intl flights?
There are 4 cabin classes available to choose from on Washington, D.C. to Incheon Intl 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 Incheon Intl Airport flights?
You could potentially save up to 17% on your flight if you consider stops on a Washington, D.C. to Incheon Intl Airport flight.
How have Washington, D.C. to Incheon Intl Airport flight prices changed over time?
As of June 2025, prices for Washington, D.C. to Incheon Intl Airport flights are approximately 19% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Washington, D.C. to Incheon Intl?
WestJet, Turkish Airlines, and Air Canada are the most popular carriers operating from Washington, D.C. to Incheon Intl
What airlines fly to Incheon Intl Airport?
Korean Air, Air Canada and American Airlines are the top three most popular airlines that fly to Incheon Intl Airport 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 Incheon Intl Airport. Keep in mind that there are 8 different airlines that fly to Incheon Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Washington, D.C. to Incheon Intl Airport on average per day?
2 flights are operational daily from Washington, D.C. to Incheon Intl Airport as of June 2025. The most popular departure time for this route is 1:00PM, with 100% of flights per day taking off in the afternoon.
How many flights depart from Washington, D.C. to Incheon Intl Airport on average per week?
The number of flights available between Washington, D.C. and Incheon Intl Airport is 14 per week as of June 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.
When to book flights from Washington, D.C. to Incheon Intl Airport
Cheap Washington, D.C. to Incheon Intl Airport (WAS to ICN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Incheon Intl Airport
How far is Washington, D.C. to Incheon Intl by plane?
The straight-line distance from Washington, D.C. to Incheon Intl is 6949.0 mi. Flights usually cover this in 17h 30m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Washington, D.C. to Incheon Intl Airport?
Prices for flights from Washington, D.C. to Incheon Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Washington, D.C. to Incheon Intl Airport?
There are 8 operators available for flights from Washington, D.C. to Incheon Intl Airport as of June 2025.
How old do you have to be to fly from Washington, D.C. to Incheon Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. to Incheon Intl Airport.
What documentation or ID do you need to fly to Incheon Intl Airport?
The travel and health documents you'll need for your trip to Incheon Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Incheon Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Washington, D.C. to Incheon Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from Washington, D.C. to Incheon Intl Airport 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 Incheon Intl Airport?
momondo data reveals that the most frequently booked airline on the route from Washington, D.C. to Incheon Intl Airport is Air Canada, representing 33% of all bookings. The subsequent popular airlines are Korean Air at 32%, Delta at 13%, and American Airlines at 7%.
Best airlines flying from Washington, D.C. to Incheon Intl Airport
Compare and see reviews for airlines that fly from Washington, D.C. to Incheon Intl Airport 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 9,531 reviews | |||
| PriceFrom $876 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $877 | Free Cancellation | Rating 8.0 7,950 reviews | |||
| PriceFrom $1,074 | Free Cancellation | Rating 8.4 1,088 reviews |
Korean Air Flights From Washington, D.C. to Incheon Intl Airport
Across 7 Korean Air flights from Washington, D.C. to Incheon Intl Airport this week, the average price was $1,792, with the best Korean Air deals starting from $1,074 round-trip. 1,088 users have rated Korean Air on momondo, with an average score of 8.4/10.
Delta Flights From Washington, D.C. to Incheon Intl Airport
$877 is the best Delta flight deal from Washington, D.C. to Incheon Intl Airport found on momondo over the last 72 hours. The average Delta ticket price found was closer to $1,821, however, with flight time and availability significantly affecting the price. Delta (8.0/10 from 7,946 user reviews) flies into Incheon Intl Airport from Washington, D.C. 7 times in an average week so prices can vary.
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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?
momondo does allow users to show only those flights to Seoul from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Washington, D.C. to Seoul?
momondo helps you find the best flight between Washington, D.C. and Seoul by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Washington, D.C. to Seoul right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Washington, D.C. to Seoul flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.