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$390+ 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — SEL
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 Sunday

Cheap 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 December 12, 2025.

This CheapOair deal was found by Cheapflights users on 12/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2810:08 pmIAD - ICN
2 stops29h 02mAir Canada
Mon 1/126:55 pmICN - IAD
2 stops30h 54mAir Canada
Deal found 12/11$1,509
This Gotogate deal was found by Cheapflights users on 12/8. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/139:00 amIAD - ICN
1 stop19h 25mAir Canada
Tue 12/168:10 pmICN - IAD
1 stop33h 36mAir Canada
Deal found 12/8$1,531
This Mytrip deal was found by Cheapflights users on 12/9. 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.
Wed 12/1010:30 amIAD - ICN
2 stops34h 00mMultiple Airlines
Wed 12/1711:20 amICN - IAD
3 stops35h 45mMultiple Airlines
Deal found 12/9$1,613
This Mytrip deal was found by Cheapflights users on 12/9. 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.
Sun 12/2810:55 pmIAD - ICN
3 stops31h 50mMultiple Airlines
Sun 1/1810:35 amICN - IAD
2 stops24h 50mMultiple Airlines
Deal found 12/9$1,617
This Booking.com deal was found by Cheapflights users on 12/10. 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.
Wed 12/244:30 pmIAD - ICN
2 stops33h 30mAir Canada
Mon 1/266:55 pmICN - IAD
2 stops30h 40mAir Canada
Deal found 12/10$1,628
This Mytrip deal was found by Cheapflights users on 12/9. 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.
Thu 12/115:05 pmIAD - ICN
3 stops35h 15mMultiple Airlines
Mon 12/156:55 pmICN - IAD
3 stops34h 51mMultiple Airlines
Deal found 12/9$1,635
This CheapOair deal was found by Cheapflights users on 12/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:48 pmIAD - ICN
2 stops32h 12mAir Canada
Mon 1/126:55 pmICN - IAD
2 stops30h 54mAir Canada
Deal found 12/9$1,642
This Booking.com deal was found by Cheapflights users on 12/9. 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.
Sun 12/284:30 pmIAD - ICN
2 stops34h 40mAir Canada
Sun 1/185:55 pmICN - IAD
2 stops31h 53mAir Canada
Deal found 12/9$1,651
This CheapOair deal was found by Cheapflights users on 12/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/241:00 pmIAD - ICN
2 stops37h 00mAir Canada
Sat 1/176:55 pmICN - IAD
2 stops30h 40mAir Canada
Deal found 12/9$1,662
This Kiwi.com deal was found by Cheapflights users on 12/9. 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.
Wed 12/241:30 pmIAD - ICN
1 stop29h 35mTurkish Airlines
Wed 12/3110:45 amICN - IAD
1 stop46h 35mTurkish Airlines
Deal found 12/9$1,664
This Mytrip deal was found by Cheapflights users on 12/10. 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.
Tue 12/2310:06 pmIAD - GMP
3 stops34h 24mMultiple Airlines
Mon 1/261:30 pmGMP - IAD
2 stops33h 35mMultiple Airlines
Deal found 12/10$1,839
This Mytrip deal was found by Cheapflights users on 12/9. 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.
Fri 12/125:05 pmIAD - GMP
3 stops30h 00mMultiple Airlines
Tue 12/231:30 pmGMP - IAD
2 stops33h 35mMultiple Airlines
Deal found 12/9$2,031

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$1,066
(Kiwi.com)

One-way from

$390
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,930

Good round-trip deal

$1,106 or less

Good one-way deal

$562 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Seoul (SEL) flights.
Search Deals
From Washington, D.C. Dulles Intl to Seoul (SEL)
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($265 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Seoul (SEL).
Search Deals
Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Seoul (SEL).
Search Deals

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 December 12, 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

5:37 pm-12:45 pm

2 stops30h 08m

Incheon Intl

Tue 3/24

10:00 am-4:50 pm

2 stops43h 50m

$1,318

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 2/13

6:20 pm-6:35 pm

2 stops34h 15m

Incheon Intl

Sat 2/21

8:35 pm-5:27 pm

2 stops34h 52m

$1,319

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Sat 1/17

5:26 pm-6:35 pm

2 stops35h 09m

Incheon Intl

Sun 1/25

8:35 pm-5:04 pm

2 stops34h 29m

$1,327

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 2/9

5:26 pm-1:55 pm

2 stops30h 29m

Incheon Intl

Sun 2/15

1:45 pm-10:48 pm

2 stops47h 03m

$1,383

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 5/15

7:15 pm-11:00 am

2 stops26h 45m

Incheon Intl

Tue 10/20

7:45 pm-5:16 pm

2 stops34h 31m

$1,436

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 5/4

7:01 pm-11:00 am

2 stops26h 59m

Incheon Intl

Fri 5/29

7:45 pm-5:15 pm

2 stops34h 30m

$1,473

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Sun 3/8

7:09 pm-1:55 pm

2 stops29h 46m

Incheon Intl

Sat 3/14

10:00 am-6:19 pm

2 stops45h 19m

$1,493

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 3/30

7:00 am-6:35 pm

1 stop22h 35m

Incheon Intl

Wed 4/22

8:35 pm-5:23 pm

2 stops33h 48m

$1,576

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Mon 4/27

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Tue 6/16

12:40 pm-10:05 am

1 stop34h 25m

$1,586

Washington, D.C.Seoul

IAD - GMP

IADGMP

Washington, D.C. Dulles Intl

Thu 4/9

12:15 pm-10:20 pm

1 stop21h 05m

Seoul Gimpo Intl

Tue 7/7

7:40 am-6:03 am

2 stops35h 23m

$1,632

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

Showing 1-10 of 46 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 December.
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 December 5, 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 $368). Flying from Washington, D.C. Dulles Intl Airport to Seoul in July is currently the most expensive (average of $1,151). 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 December 12, 2025.

Unlike in the afternoon, 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 December 12, 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).

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Seoul?

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 67% 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 Beijing (PEK) offer the fastest connection on this route, with an average layover time of 3h 20m.

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

AI-powered summary based on content written by travel experts. AI can make mistakes.
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 December 12, 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
1,184 reviews

Boarding

8.5

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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
1,184 reviews
Korean Air
8.4
Very good
1,184 reviews

Boarding

8.5

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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
8,005 reviews
Korean Air
8.4
Very good
1,184 reviews

Boarding

8.5

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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
4,088 reviews
Korean Air
8.4
Very good
1,184 reviews

Boarding

8.5

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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
11,050 reviews
Korean Air
8.4
Very good
1,184 reviews

Boarding

8.5

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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
10,516 reviews
Korean Air
8.4
Very good
1,184 reviews

Boarding

8.5

Overall

8.4

Comfort

8.3

Crew

8.7

Food

8.1

Entertainment

8.2

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 05m. 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 $397 and $591, respectively. United Airlines is currently priced 79% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Washington, D.C. Dulles Intl Airport to Seoul one-way?

    One-way options have recently been found by users for as low as $469 on American Airlines. Other airlines that offer cheap prices include Turkish Airlines from $517 and Air Canada from $558 one-way.

  • 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 $486. On average you can expect to pay $2,518. The most popular route, (Washington, D.C. Dulles Intl - Incheon Intl), can usually be booked for $968.

  • 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 $368). Flying from Washington, D.C. Dulles Intl Airport to Seoul in July is currently the most expensive (average of $1,151). 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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$317Average$1,576FlexibilityNo cancel feeOn-time69%
DeltaCheapest$397Average$1,938FlexibilityNo cancel feeOn-timeN/A
Air ChinaCheapest$591Average$747FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$759Average$2,186FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$800Average$993FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$876Average$1,332FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$948Average$1,520FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,576Average$1,955FlexibilityNo cancel feeOn-time81%

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