$645 Find Cheap Flights from Washington Dulles Airport to South Korea - Compare and Save

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 South Korea departing on 8/24. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from Dulles Intl to South Korea

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seoul
Seoul1 stop$1,181
Jeju City
Jeju City2 stops$1,737
Busan
Busan1 stop$1,188
Daegu
Daegu1 stop$1,709
Seoul
Seoul1 stop$1,181
Jeju City
Jeju City2 stops$1,737
Busan
Busan1 stop$1,188
Daegu
Daegu1 stop$1,709

Book Cheap Dulles Intl to South Korea Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Dulles Intl to South Korea 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 South Korea

Mon, Aug 31 - Sat, Sep 19
EVA Air Logo
1:50 am - 7:15 pm
IAD
-
GMP
28h 25m
1 stop
EVA Air Logo
1:50 pm - 10:00 pm
GMP
-
IAD
21h 10m
1 stop
$1,181EVA Air
Wed, Sep 16 - Mon, Sep 21
EVA Air Logo
1:15 am - 6:00 pm
IAD
-
PUS
27h 45m
1 stop
EVA Air Logo
11:20 am - 10:00 pm
PUS
-
IAD
23h 40m
1 stop
$1,188EVA Air
Wed, Sep 2 - Tue, Sep 8
EVA Air Logo
1:15 am - 12:50 pm
IAD
-
GMP
22h 35m
1 stop
EVA Air Logo
7:15 pm - 10:00 pm
GMP
-
IAD
39h 45m
1 stop
$1,226EVA Air
Mon, Jul 20 - Sun, Aug 30
American Airlines Logo
6:14 am - 3:45 pm
IAD
-
ICN
20h 31m
1 stop
American Airlines Logo
5:50 pm - 10:52 pm
ICN
-
IAD
18h 02m
1 stop
$1,296American Airlines
Mon, Jul 20 - Sun, Aug 30
American Airlines Logo
5:03 am - 3:45 pm
IAD
-
ICN
21h 42m
2 stops
American Airlines Logo
5:50 pm - 10:52 pm
ICN
-
IAD
18h 02m
1 stop
$1,300American Airlines
Sat, Nov 14 - Wed, Nov 25
Turkish Airlines Logo
9:20 pm - 6:20 pm
IAD
-
ICN
31h 00m
1 stop
Turkish Airlines Logo
12:05 am - 7:25 pm
ICN
-
IAD
33h 20m
1 stop
$1,302Turkish Airlines
Thu, Sep 17 - Mon, Sep 21
Korean Air Logo
1:15 pm - 7:55 pm
IAD
-
TAE
17h 40m
1 stop
Korean Air Logo
7:55 am - 11:05 am
TAE
-
IAD
16h 10m
1 stop
$1,709Korean Air
Thu, Sep 17 - Mon, Sep 21
Korean Air Logo
8:00 am - 7:55 pm
IAD
-
TAE
22h 55m
2 stops
Korean Air Logo
7:55 am - 11:05 am
TAE
-
IAD
16h 10m
1 stop
$1,714Korean Air
Mon, Aug 10 - Tue, Aug 25
Delta Logo
1:30 pm - 7:55 pm
IAD
-
TAE
17h 25m
1 stop
Delta Logo
7:55 am - 8:05 pm
TAE
-
IAD
25h 10m
2 stops
$1,715Delta
Mon, Aug 10 - Tue, Aug 25
Delta Logo
6:00 am - 7:55 pm
IAD
-
TAE
24h 55m
2 stops
Delta Logo
7:55 am - 12:34 am
TAE
-
IAD
29h 39m
2 stops
$1,720Delta
Booking Insights

KAYAK's insights & trends for Dulles Intl to South Korea flights

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

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

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

The cheapest ticket to South Korea from Washington, D.C. Dulles Intl Airport found in the last 5 days was to Seoul, at $1,087 round-trip. The most popular route is from Washington, D.C. Dulles Intl Airport (IAD) to Incheon Intl Airport (ICN), and the cheapest round-trip airline ticket found on this route in the last 5 days was $1,087.

What is the cheapest time of day to fly to South Korea?

The average price for all round-trip flights from Washington, D.C. Dulles Intl Airport to South Korea depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to South Korea is generally in the afternoon, when round-trip flights cost $1,300 on average. The most expensive time of day to fly to South Korea is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,363.

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

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 $1,307, prices are generally cheapest when you fly direct.

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

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 South Korea, 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 South Korea is October, when tickets cost $197 (return) on average. On the other hand, the most expensive months are November and January, when the average cost of round-trip tickets is $915 and $816 respectively.

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

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

If your flying dates are flexible, you should consider flying to South Korea 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 South Korea. For your return ticket, we recommend flying on a Friday and avoiding Thursdays for the best deals.

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

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 South Korea, 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 South Korea, you should book around 4 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$645
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Washington Dulles Airport to Seoul Gimpo Intl

FAQs - booking South Korea flights

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

    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 South Korea.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Washington Dulles Airport to South Korea 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 South Korea?

    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 from Washington Dulles Airport to South Korea with an airline and back 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 South Korea?

    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 from Washington Dulles Airport to South Korea up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Dulles Intl to South Korea

 
Need help choosing which airline to fly with from Dulles Intl to South Korea? 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 1218 reviews
8.2Entertainment
8.3Comfort
8.1Food
8.7Crew
8.5Boarding
Airline reviews

Aircraft is pretty old. Seat is not comfortable. Meal quality is disappointing. Entertainment system is not impressive at all.

4.0 OkayAnonymous, Apr 2026
GMP - CJU
Read more Korean Air reviews

Aircraft is pretty old. Seat is not comfortable. Meal quality is disappointing. Entertainment system is not impressive at all.

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?

Reasonable fair, good service, in sum, I am very happy!

Courteous crew and effective service on-board. Good leg room. Areas for improvement: 1. Limited menu meal menu options. During checking there was no means provided to select meal option. On our return flight the first meal had Pork and Beef options only. Fortunately the second meal had Chicken as an option. Otherwise we would have gone without meal through 13+ hrs of journey, 2. Limited choice and very limited number of movies and TV shows.

I booked this airline twice. The first time, they cancelled the flight due to destination weather condition but without offering any optional flight but only a cancelation notice sent via SMS. I had no choice but to re-book United airline with the same travel date and destination. (no impact on the weather condition Air Premia claimed) The second time, my husband missed the flight due to local traffic in Seoul. Normally, all major airline would helped you to re-book the same flight next day with changing fee only. But Air Premia offered nothing and only requested my husband to re-book a full price ticket.

Don't splurge for the Premium Wide Economy. They compare it to business class. This is not business class, and the seats are very uncomfortable.

For the second meal, the different food choices ran out both times so we were only offered one.

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.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

Flight was great! This flight from Atlanta was even better than when I paid for Comfort from SNA to Atlanta.

Entertainment system is okay, flight attendants were ok. Leg space very narrow, I couldn’t get what I wanted to eat, dinner nor breakfast.

Excellent experience with business class area. Staff was attentive and food was amazing. Only one bathroom for business class which was logistically difficult for the staff while preparing meals. Need to offer fluids with meals. I did not get enough water to drink. But overall I rate it 5 star.

On time, great food, good drink selection! Only down was alcohol-free lounge. Lufthansa had a much better offering!

Be honest of what you sell: This was sold as Business Class on all three legs, while the JetBlue plane didn't even have business class seats, and wanted $164 for extra legroom seats.

Seat assignments for family traveling with 2 children. Loud crowd during sleep time

It was crowded… the bathrooms dirty and smelly. The seats have been made even smaller.

delayed to take off from detroit by 3 hours lost baggage in istanbul and now in venice without baggage

Seats were very tight with poor legroom - and I am average height. During the 12 hour flight, tiny paper cups of drinks we're only offered during the super and breakfast services, with the crew nowhere to be seen in between. One of the bathrooms was out of order, leading to long lines waiting to use the remaining two available to the economy class passengers.

short flight but we still got a very nice lunch and the crew did an excellent job in taking care of us

For that price on Business class, I expected to have the pod seats. These were configured as 2/3/2 and my seat mate talked half the flight with a friend across the isle, loudly. Very uncouth.

Flight was overbooked and seats assigned to multiple passengers. Delay 1 hour to sort out.

Good but I don’t received my bags yet is been 5days still no update

It was pretty straight forward, no glitches or hidden costs

It was a short flight so, everything went smoothly and we got to where we needed to be safely.

Didn’t make it on the flight. Delayed then had to be rebooked, which in turn had me waiting at the airport for another 8 hours before next flight

No TV on the flight. The charging outlet was not working. No food, even a sandwich. The served orange was poor quality.

Loved and was pleasantly surprised by the food!! Request Lufthansa to help transiting passengers at Munich (confusion whether to go thru passport control or not).

Flight home was delayed multiple times, did not get home until 2am

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

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

Everything you need to know for your flight from Dulles Intl to South Korea

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