IAD - SEL

$364 Find Cheap Flights from Washington Dulles Airport to Seoul

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Dulles Intl to Seoul departing on 4/24. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Seoul

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Seoul.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Washington, D.C. to Seoul.
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Everything you should know

Cheapest round-trip
$934
Overall average: $907
Air China
Fri 4/24Fri 5/15
IAD - ICN • 1 stop
Cheapest non-stop
$950
Typical prices: $1,356-$2,265
AIR PREMIA
Sun 4/26Mon 5/11
IAD - ICN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Dulles offers the AeroTrain for quick terminal transfers.
Use the AREX Express train for a fast trip to Seoul.
Expert advice
Expert advice
Expert advice
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Top airlines
Cheapest • from $934 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
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+1
Airline reviews
Airline reviews
+1
Top layover airports
Cheapest • Avg $197 (round-trip)
Shortest trip • 8h 07m (one-way)
Insights
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Top routes
Cheapest
Most popular
Insights
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When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 30% compared to booking last minute.
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When to travel
Cheapest • 31% price drop
Most popular
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Flight Deals
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Flight Deals

Cheap Flights from Dulles Intl to Seoul (IAD-SEL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to Seoul that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Dulles Intl to Seoul

Fri, Apr 24 - Fri, May 15
Air China Logo
11:00 pm - 4:35 pm
IAD
-
ICN
28h 35m
1 stop
Air China Logo
1:05 pm - 7:30 pm
ICN
-
IAD
19h 25m
1 stop
$934Air China
Fri, Apr 24 - Thu, Apr 30
Multiple Airlines Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
Multiple Airlines Logo
1:30 pm - 4:09 pm
ICN
-
IAD
39h 39m
3 stops
$941Multiple Airlines
Fri, Apr 24 - Sun, May 17
Multiple Airlines Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
Multiple Airlines Logo
11:20 am - 10:12 am
ICN
-
IAD
59h 52m
3 stops
$943Multiple Airlines
Fri, Apr 24 - Mon, Jun 15
Multiple Airlines Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
Multiple Airlines Logo
3:10 pm - 1:13 pm
ICN
-
IAD
59h 03m
3 stops
$946Multiple Airlines
Fri, May 1 - Tue, May 26
Multiple Airlines Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
Multiple Airlines Logo
8:45 pm - 5:27 pm
ICN
-
IAD
33h 42m
3 stops
$949Multiple Airlines
Sun, Apr 26 - Mon, May 11
AIR PREMIA Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
AIR PREMIA Logo
10:00 am - 10:50 am
ICN
-
IAD
13h 50mnonstop
$950AIR PREMIA
Mon, May 4 - Wed, May 20
AIR PREMIA Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
AIR PREMIA Logo
10:00 am - 10:50 am
ICN
-
IAD
13h 50mnonstop
$951AIR PREMIA
Mon, Apr 27 - Tue, May 26
Multiple Airlines Logo
1:20 pm - 5:55 pm
IAD
-
ICN
15h 35mnonstop
Multiple Airlines Logo
8:45 pm - 5:27 pm
ICN
-
IAD
33h 42m
3 stops
$952Multiple Airlines
Mon, Aug 3 - Fri, Aug 21
EVA Air Logo
1:50 am - 7:15 pm
IAD
-
GMP
28h 25m
1 stop
EVA Air Logo
1:50 pm - 10:30 pm
GMP
-
IAD
21h 40m
1 stop
$1,057EVA Air
Mon, Aug 3 - Sat, Aug 22
EVA Air Logo
1:50 am - 7:15 pm
IAD
-
GMP
28h 25m
1 stop
EVA Air Logo
1:50 pm - 10:30 pm
GMP
-
IAD
21h 40m
1 stop
$1,197EVA Air
Booking Insights

KAYAK's insights & trends for Dulles Intl to Seoul flights

Get data-powered insights and trends into flights from Dulles Intl to Seoul to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Washington, D.C. Dulles Intl Airport to Seoul?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Washington, D.C. Dulles Intl Airport to Seoul departing in April.

What is the cheapest Washington, D.C. Dulles Intl Airport to Seoul flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from Washington, D.C. Dulles Intl Airport to Seoul costs $493 on the route between Washington, D.C. Dulles Intl Airport (IAD) and Incheon Intl Airport (ICN). It is also the most popular route.

What’s the cheapest day of the week to fly from Washington Dulles Airport to Seoul?

The average price of all round-trip flights from Washington, D.C. Dulles Intl Airport to Seoul clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Seoul on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Washington Dulles Airport to Seoul. For your return ticket, we recommend flying on a Sunday and avoiding Thursdays for the best deals.

What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Seoul?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Seoul, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Washington, D.C. Dulles Intl Airport to Seoul is February, where tickets cost $1,063 (return) on average. On the other hand, the most expensive months are January and June, where the average cost of round-trip tickets is $1,880 and $1,757 respectively.

Can I save money by flying with a layover from Washington, D.C. Dulles Intl Airport to Seoul?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $1,285, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Seoul?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Washington, D.C. Dulles Intl Airport to Seoul, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Washington, D.C. Dulles Intl Airport to Seoul, you should book around 3 weeks before departure, which saves you about 30% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Expert advice

Expert advice for your flight from Dulles Intl to Seoul

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Robert Schrader

Robert Schrader

Expert on ICN

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Stefanie Waldek

Stefanie Waldek

Expert on IAD

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Good to know

Low seasonJanuary
Cheapest flight$364
Best time to beat the crowds but there is an average 22% increase in price.
Most popular time to fly and prices are also 24% lower on average.
Flight from Washington Dulles Airport to Seoul Incheon Airport

When to book flights from Dulles Intl to Seoul

Are your dates flexible? Find out the best times to travel from Dulles Intl to Seoul based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Washington Dulles Airport to Seoul flights

  • What is the cheapest flight from Washington, D.C. Dulles Intl Airport to Seoul?

    In the last 3 days, the lowest price for a flight from Washington, D.C. Dulles Intl Airport to Seoul was $364 for a one-way ticket and $934 for a round-trip.

  • Do I need a passport to fly between Washington Dulles Airport and Seoul?

    Yes, you'll most likely have to show a valid passport before boarding the plane in Washington Dulles Airport and on arrival in Seoul.

  • Which airports will I be using when flying from Washington Dulles Airport to Seoul?

    When flying out of Washington Dulles Airport you will be using Washington, D.C. Dulles Intl. You will be landing at one of these airports: Seoul Gimpo Intl or Incheon Intl.

  • Which airlines offer Wi-Fi service onboard planes from Washington Dulles Airport to Seoul?

    Only American Airlines offers inflight Wi-Fi service on the Washington Dulles Airport to Seoul flight route.

  • Which aircraft models fly most regularly from Washington Dulles Airport to Seoul?

    The Boeing 777-300ER is the aircraft model that flies most regularly on the Washington Dulles Airport to Seoul flight route.

  • Which airline alliances offer flights from Washington Dulles Airport to Seoul?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Washington Dulles Airport and Seoul, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Washington Dulles Airport to Seoul?

    There are nonstop flights from Washington Dulles Airport to Seoul on a daily basis.

  • Which is the best airline for flights from Washington, D.C. to Seoul, Korean Air or AIR PREMIA?

    The two airlines most popular with KAYAK users for flights from Washington, D.C. to Seoul are Korean Air and AIR PREMIA. With an average price for the route of $1,789 and an overall rating of 8.4, Korean Air is the most popular choice. AIR PREMIA is also a great choice for the route, with an average price of $1,300 and an overall rating of 8.2.

  • How does KAYAK find such low prices on flights from Washington Dulles Airport to Seoul?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington Dulles Airport to Seoul.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington Dulles Airport to Seoul?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul from Washington Dulles Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington Dulles Airport to Seoul?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seoul with an airline and back to Washington Dulles Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington Dulles Airport to Seoul?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seoul from Washington Dulles Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Washington, D.C. Dulles Intl Airport to Seoul

  • Looking for a cheap flight? 25% of our users found flights on this route for $425 or less one-way and $605 or less round-trip.

Reviews of the top 5 airlines serving from Dulles Intl to Seoul

 
See real verified KAYAK customer reviews for airlines flying from Washington, D.C. to Seoul. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Dulles Intl to Seoul? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1202 reviews
8.7Crew
8.5Boarding
8.2Entertainment
8.1Food
8.3Comfort
Airline reviews

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

10.0 ExcellentOmer, Mar 2026
MNL - ICN
Read more Korean Air reviews

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

Never had a flight delay issue with Korean Air, that's why I always go with this airline.

Flight crew were very attentive and made this trip a pleasure. Plus the fact that this our first time flying business class.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

Korean are so racist and when I ask question or directions they totally ignore me and say racist. Also they give me an rude attitude.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I normally love Korean Air, but this trip was not great. We boarded the plan and were settling into our seats. My son and I use these leg swings and we used it on the trip over to Cambodia, but on the way back the flight attendant very rudely told us we could not use it and that it was against regulations. I asked to see the regulation, but never saw it. The food on this trip was horrible as well, Even my son's kids meal was disgusting so we didn't eat anything on the flight. Thankfully we brought snacks. Entertainment - what happened to the games?

This was an amazing flight. The crew was great. The service was great. The food provided was great.

Seating was good in the economy with plenty of leg room. The seat cushions were a little firm though, especially for such a long flight. All meals were Korean as would be expected. The food was typical airline quality. Edible, but not something you would recommend to friends. Inflight entertainment was also all Korean but Korean tv and movies are made well and you can find something to watch. Just be prepared to read subtitles. Overall it was a good flight, especially for the price.

The crews were friendly, professional and courteous. Checking in was easy and smooth. The best part is, as we all know, the price.

The person in front of me was rude. He may came from some communism countries and don’t care of other people. No common manner and sense between human being.

Very nice staff, airplanes, and an excellent value in premium economy.

Food quality is poor. Flight attendants are very friendly and professional.

I flew on Zip Air on the way to Asia so I can compare. The two airlines are night and day. Air Premia was so amazing compared to Zip Air. I have flown Korean Air in the past and I honestly don’t know the difference between Air Premia and the “non-budget” airlines. My Air Premia flight provided me two bags whereas I had to pay for Zip Air. On my under 11 hour flight, we were provided two full meals! The flight attendants were so kind and polite.

For the price, the overall experience was what I expected. The prices were fair and competitive, the staff friendly and more responsive than other airlines, and seating spacious. The downside was food portion size, but I'll gladly pay a few dollars more for the hot noodles or other supplemental snacks, given the more affordable ticket prices. I don't mind the absence of Hollywood movie programming if that leads to inflated ticket prices. Wi-Fi worked well. In addition to spacious seating for the Wide Premiium, I'd suggest foot rests to complement the calf rests. There're problems with booking Air Premia tickets at the home website. The underlying app engine won't process non-Korean credit cards, which is a major oversight, probably hurting the company's bottom line. I can go to Kayak or a third-party website to book Air Premia tickets, but it's an awkward work-around when other airlines don't have to resort to this tactic.

As it's a budget airline it's pretty basic. But the quality of crew and plane is excellent.

First time flying with them and was pleasantly surprised. I had a premium economy seat which is very similar to some other airlines regional business class product. Seat was large, pillow was provided, huge amount of leg room, entertainment was available (only Korean shows), and lunch meal was served between Narita and Seoul. Really enjoyable and affordable

Maybe the reimbursement voucher should have been larger than a 10k won. That voucher is only for refreshments. The flight was delayed or pushed to more than 5 hours. It should be more than just 10k won and it was already past midnight. Some people or passengers like who was already there 5 hours prior to the original flight departure. 4pm** That was the only unfortunate thing about it . Other than that it was good .

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

With Aeromexico it ended up good but with Delta it was bad because we did everything through Delta... Showed up at the Delta terminal... It was the wrong place! Nothing ever told us to go to the Aeromexico terminal. It said "in partnership with Aeromexico" but I was never instructed to check in with them or go to their terminal. We had to haul @$$ running through the airport and almost didn't make it thanks to this poor communication. 👎🏽

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

IAH to Istanbul was outstanding across the board. The flight from Istanbul to Male was good, not great.

the cabin was kept too hot. couldn't sleep as a result

It was an amazing experience. Flight crew's service, hospitality, and the food were phenomenal. I don't think I'd want to try any other airline company after this. I would definitely recommend to friends and family. Thank you Turkish Airlines !

Business Class pods are horrible. If you're petite, you might be able to sleep on the uncomfortable seat and bed. Crew and food are fantastic.

I have travelled many times on Turkish, but they always board at least 30-40 minutes past the stated time. If informed properly, passengers can choose to spend more time in the .lounge instead of standing around by the gate waiting to board. The new lounge at DFW was a big disappointment. The aircraft itself was a shock. In the past I have flown this sector with regular business class seating configuration of 1-2-1, The 2-3-2 seating is very disappointing after paying such high prices for tickets. The DFW to Istanbul segment was slightly better, but the Istanbul to Delhi segment was no better than premium economy. I will try to travel more on airlines which give business class passengers more value for their money.

Good overall. Seat spacing a bit tight between IST and ISB.

Excellent staff despite some trying passenger situations. Very impressed with their good attitudes and kindness.

Crew were unfriendly, touch screen for movies didn't work very well, seats were tight and uncomfortable

After arriving in Istanbul, the transit information on the electronic board showed a tight departure time, and the gate changed in the middle, making it difficult to make it on time.

Typically good service onboard but baggage delay in airport was significant

Departed Palm Springs over an hour late because there’s only one gate, and it has always delayed by the arriving and departing flight to Toronto and the arriving flight from Vancouver.

I checked a bag and there was only one agent to assist all customers with any issues.

I want to thank Carlos at the Miami AC desk - he was amazing and went over and above to help us out. Thank you Carlos and all the best to you!!! You made our faith in AC feel great! Sincerely, David Cubitt

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

Extremely disappointing. My original Denver–Vancouver–Bangkok itinerary was cancelled due to a crewing issue. I was not proactively supported and had to drive back home after already reaching the airport. Communication was poor throughout, and attempts to contact customer service resulted in being on hold for nearly three hours without reaching anyone. Instead of being rebooked on the same direct routing the following day, I was rerouted onto a much longer itinerary via multiple cities and airlines, which resulted in arriving approximately 30 hours later than scheduled. At Denver airport, there was no visible Air Canada representative available to properly assist. Ground staff offered no real support beyond directing passengers to a phone number. There was no clear communication, no ownership, and no meaningful customer care during a major disruption. The final journey involved three flights instead of the original two, significantly increasing travel time and stress. Overall, the handling of the cancellation and lack of customer support was unacceptable. What could have been better? Clear communication during the cancellation Accessible customer service (phone support that actually answers) Proper in-person assistance at the airport Rebooking onto a comparable routing rather than a significantly longer one

Great setup on both flights except the last flight we got condensed dripping all over me in the last 20 mins of the flight

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

Check in agent was very helpful and polite. He helped me board the earlier flight back home instead of waiting 2 hours at the airport for the next flight

Everything you need to know for your flight from Dulles Intl to Seoul

Information on your arrival and departure airports