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$426+ Cheap flights from Dulles Intl (IAD) to Seoul (SEL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SEL
Nov 26 — Dec 31
Wed 11/26
Wed 12/3
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Seoul are usually found in February or January, booked 27 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Dulles Intl to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Seoul (SEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 27, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,010
(Ovago)

One-way from

$426
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,327

Good round-trip deal

$1,239 or less

Good one-way deal

$632 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Seoul (SEL) flights.
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From Washington, D.C. Dulles Intl to Seoul (SEL)
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One-way flight from Washington, D.C. Dulles Intl to Seoul (SEL)
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Highest demand for flights based on searches. 10% potential increase in price ($168 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Seoul (SEL).
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Seoul (SEL).
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Find flight deals from Dulles Intl to Seoul

Cheapest flights from Dulles Intl to Seoul
Explore the most affordable flight options available from Dulles Intl to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/109:15 pmIAD - ICN
1 stop21h 50mTurkish Airlines
Tue 12/212:10 amICN - IAD
1 stop25h 35mTurkish Airlines
Deal found 10/24$1,034
This Booking.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/135:50 pmIAD - ICN
2 stops33h 20mAir Canada
Mon 11/176:55 pmICN - IAD
2 stops30h 50mAir Canada
Deal found 10/26$1,036
This Air Canada deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:50 pmIAD - ICN
2 stops32h 10mAir Canada
Tue 12/166:55 pmICN - IAD
2 stops30h 28mAir Canada
Deal found 10/26$1,038
This KAYAK deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:15 pmIAD - ICN
1 stop31h 05mTurkish Airlines
Wed 12/310:45 amICN - IAD
1 stop39h 00mTurkish Airlines
Deal found 10/24$1,039
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/249:15 pmIAD - ICN
1 stop21h 50mMultiple Airlines
Mon 12/86:55 pmICN - IAD
2 stops25h 11mMultiple Airlines
Deal found 10/26$1,040
This Booking.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:30 pmIAD - ICN
1 stop35h 55mAir Canada
Thu 11/206:55 pmICN - IAD
2 stops30h 50mAir Canada
Deal found 10/25$1,042
This Air Canada deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:50 pmIAD - ICN
2 stops32h 10mAir Canada
Sat 12/208:10 pmICN - IAD
1 stop29h 38mAir Canada
Deal found 10/25$1,045
This Kiwi.com deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/251:30 pmIAD - ICN
1 stop38h 50mMultiple Airlines
Mon 12/86:55 pmICN - IAD
2 stops33h 34mMultiple Airlines
Deal found 10/25$1,049
This Air Canada deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:00 amIAD - ICN
1 stop19h 25mAir Canada
Tue 1/138:10 pmICN - IAD
1 stop33h 44mAir Canada
Deal found 10/26$1,051
This Air Canada deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/145:50 pmIAD - ICN
2 stops34h 35mAir Canada
Wed 1/145:55 pmICN - IAD
2 stops31h 53mAir Canada
Deal found 10/26$1,052
This Air Canada deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/159:00 amIAD - ICN
1 stop19h 25mAir Canada
Tue 12/238:10 pmICN - IAD
1 stop34h 20mAir Canada
Deal found 10/25$1,053
This Mytrip deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/85:30 pmIAD - GMP
3 stops29h 35mMultiple Airlines
Mon 12/221:30 pmGMP - IAD
2 stops33h 35mMultiple Airlines
Deal found 10/25$1,328

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Seoul that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 27, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Seoul that are best for you.

Fly from

Dulles Intl

Fly to

Seoul

Route

Depart

Return

Price

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 3/10

10:15 pm-6:20 pm

1 stop31h 05m

Incheon Intl

Wed 3/18

12:10 am-12:45 pm

1 stop25h 35m

$1,044

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 3/23

10:15 pm-9:05 am

1 stop21h 50m

Incheon Intl

Wed 4/1

11:20 pm-11:35 am

1 stop25h 15m

$1,044

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 3/20

10:15 pm-6:20 pm

1 stop31h 05m

Incheon Intl

Mon 3/30

11:20 pm-11:35 am

1 stop25h 15m

$1,044

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 3/24

10:15 pm-6:20 pm

1 stop31h 05m

Incheon Intl

Wed 4/1

11:20 pm-11:35 am

1 stop25h 15m

$1,094

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Tue 11/25

10:00 pm-1:05 pm

1 stop25h 05m

Seoul Gimpo Intl

Tue 12/2

1:30 pm-3:30 pm

2 stops40h 00m

$1,376

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 1/8

11:10 am-10:30 pm

1 stop21h 20m

Seoul Gimpo Intl

Wed 2/11

7:50 pm-9:10 am

1 stop27h 20m

$1,497

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Wed 2/18

11:10 am-10:30 pm

1 stop21h 20m

Seoul Gimpo Intl

Wed 6/17

7:55 pm-2:03 pm

2 stops31h 08m

$1,506

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Wed 3/25

12:15 pm-10:30 pm

1 stop21h 15m

Seoul Gimpo Intl

Wed 4/22

7:55 pm-2:03 pm

2 stops31h 08m

$1,506

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 2/13

5:51 pm-6:35 pm

2 stops34h 44m

Incheon Intl

Sun 2/22

8:35 pm-5:25 pm

2 stops34h 50m

$1,557

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 2/16

9:15 pm-9:05 am

1 stop21h 50m

Incheon Intl

Wed 2/18

12:10 am-7:20 pm

1 stop33h 10m

$1,581

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Showing 1-10 of 43 results
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Compare providers for flights from Dulles Intl to Seoul

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Seoul in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Seoul flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Seoul flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Seoul flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Seoul

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Seoul. Price data was last updated on October 24, 2025.

The best time to book flights from Washington, D.C. Dulles Intl Airport to Seoul is 26 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Seoul (average of $407). Flying from Washington, D.C. Dulles Intl Airport to Seoul in July is currently the most expensive (average of $1,155). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to SEL?

Find hourly flight availability from Dulles Intl to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 31% on flights from Washington, D.C. Dulles Intl Airport to Seoul by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Seoul. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Seoul flight should consider departing on Monday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Washington, D.C. Dulles Intl Airport to Seoul

Explore weekly flight availability from Dulles Intl to Seoul. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 27, 2025.

The most flights from IAD to SEL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

What’s the top layover airport for flights from Washington, D.C. Dulles Intl Airport to Seoul?

Share of 1-stop round-trip flights from Washington, D.C. Dulles Intl Airport to Seoul chosen by Cheapflights users in the past 12 months, using the same layover each way.

Istanbul (IST) – chosen by Cheapflights users on 83% of 1-stop itineraries from Washington, D.C. Dulles Intl Airport to Seoul on Cheapflights.

What’s the cheapest layover airport for flights from Washington, D.C. Dulles Intl Airport to Seoul?

Average round-trip fare for 1-stop flights from Washington, D.C. Dulles Intl Airport to Seoul, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Istanbul (IST) is the most affordable 1-stop option, with an average round-trip price of $939.

What’s the fastest layover option from Washington, D.C. Dulles Intl Airport to Seoul?

Shortest average travel time for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to Seoul, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Istanbul (IST) have the shortest average one-way travel time for 1-stop routes: 21h 40m.

Which airport typically offers the quickest layover for flights from Washington, D.C. Dulles Intl Airport to Seoul?

Average layover duration for 1-stop one-way flights from Washington, D.C. Dulles Intl Airport to Seoul, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Istanbul (IST) offer the fastest connection on this route, with an average layover time of 2h 46m.

The best insider tips for Washington, D.C. Dulles Intl Airport to Seoul flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Seoul trip
Airports
IAD

For a smooth departure from IAD, use the Aerotrain to quickly reach distant concourses, but allow extra time for security queues.

Read more about IADby Ramsey Qubein
ICN

Upon arrival at ICN, the AREX express train offers a quick 40-50 minute ride to Seoul Station, ideal for reaching the city efficiently.

Read more about ICNby Gabriel Leigh
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on ICN

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seoul. Reviews last updated October 27, 2025.
Get a feel of what it's like to fly with Korean Air, Delta, and Turkish Airlines from Washington, D.C. Dulles Intl Airport to Seoul by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,153 reviews

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,153 reviews
Korean Air
8.4
Very good
1,153 reviews

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
7.9
Good
7,996 reviews
Korean Air
8.4
Very good
1,153 reviews

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Turkish Airlines
7.3
Good
4,029 reviews
Korean Air
8.4
Very good
1,153 reviews

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
American Airlines
7.2
Good
11,032 reviews
Korean Air
8.4
Very good
1,153 reviews

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Air Canada
7.1
Good
10,370 reviews
Korean Air
8.4
Very good
1,153 reviews

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Seoul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Departing from Washington, D.C. Dulles Intl Airport to Seoul will take you 21h 20m. The distance between Washington, D.C. Dulles Intl Airport and Seoul is about 6925 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Washington, D.C. Dulles Intl Airport to Seoul round-trip?

    Flying on United Airlines is currently your cheapest option to Seoul, with prices starting at $317. Additional round-trip tickets that might be worth considering are offered by Delta and Air China, with the lowest prices starting at $407 and $591, respectively. United Airlines is currently priced 77% below the average price you’ll pay for this route.

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

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Seoul is $549. On average you can expect to pay $2,893. The most popular route, (Washington, D.C. Dulles Intl - Incheon Intl), can usually be booked for $930.

  • Can I find deals for flights from Dulles Intl to Seoul that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Seoul flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Seoul?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Seoul.

  • Can I find deals for business class flights from Dulles Intl to Seoul?

    Yes. Cheapflights offers flight deals from Dulles Intl to Seoul by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Seoul (average of $407). Flying from Washington, D.C. Dulles Intl Airport to Seoul in July is currently the most expensive (average of $1,155). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 8 airlines flying from Dulles Intl to Seoul

Discover the top 8 airlines that operate flights from Dulles Intl to Seoul. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$317Average$1,604FlexibilityNo cancel feeOn-time69%
DeltaCheapest$407Average$1,852FlexibilityNo cancel feeOn-timeN/A
Air ChinaCheapest$591Average$747FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$759Average$2,072FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$791Average$990FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$872Average$1,514FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$876Average$1,292FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,547Average$1,898FlexibilityNo cancel feeOn-time81%

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