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Dulles Intl

$659+ Cheap flights from Seoul (SEL) to Dulles Intl (IAD)

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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — IAD
Jul 18 — Jul 251
Sat 7/18
Sat 7/25
1 adult, Economy
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Cheap flight deals from Seoul to Dulles Intl

Cheapest flights from Seoul to Dulles Intl
Explore the most affordable flight options available from Seoul to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.

This Expedia deal was found by Cheapflights users on 6/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:45 pm
ICN
-
IAD
2 stops26h 58m
Air Canada
Sun 10/1810:10 pm
IAD
-
ICN
2 stops28h 55m
Air Canada
Deal found 6/15$882
This Air Canada deal was found by Cheapflights users on 6/14. 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 7/85:45 pm
ICN
-
IAD
1 stop25h 37m
Air Canada
Sat 7/115:34 pm
IAD
-
ICN
2 stops33h 31m
Air Canada
Deal found 6/14$885
This Air Canada deal was found by Cheapflights users on 6/13. 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.
Thu 12/176:55 pm
ICN
-
IAD
2 stops30h 21m
Air Canada
Tue 2/235:50 pm
IAD
-
ICN
2 stops33h 20m
Air Canada
Deal found 6/13$888
This Air Canada deal was found by Cheapflights users on 6/14. 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.
Thu 7/95:45 pm
ICN
-
IAD
1 stop25h 37m
Air Canada
Sat 7/1110:14 pm
IAD
-
ICN
2 stops28h 51m
Air Canada
Deal found 6/14$890
This Air Canada deal was found by Cheapflights users on 6/14. 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.
Sat 10/35:45 pm
ICN
-
IAD
2 stops30h 36m
Air Canada
Sat 10/105:40 pm
IAD
-
ICN
2 stops33h 25m
Air Canada
Deal found 6/14$893
This Air Canada deal was found by Cheapflights users on 6/15. 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 10/145:45 pm
ICN
-
IAD
2 stops30h 28m
Air Canada
Wed 10/215:40 pm
IAD
-
ICN
2 stops33h 25m
Air Canada
Deal found 6/15$895
This Air Canada deal was found by Cheapflights users on 6/14. 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 12/216:55 pm
ICN
-
IAD
2 stops30h 49m
Air Canada
Wed 1/61:20 pm
IAD
-
ICN
2 stops37h 50m
Air Canada
Deal found 6/14$900
This WhyPayMore deal was found by Cheapflights users on 6/15. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/185:45 pm
ICN
-
IAD
1 stop25h 37m
Air Canada
Wed 7/229:55 am
IAD
-
ICN
1 stop18h 35m
Air Canada
Deal found 6/15$907
This YBTour deal was found by Cheapflights users on 6/16. 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 YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:10 am
GMP
-
IAD
2 stops26h 16m
Multiple Airlines
Mon 8/249:55 am
IAD
-
GMP
2 stops23h 25m
Multiple Airlines
Deal found 6/16$1,134
This YBTour deal was found by Cheapflights users on 6/16. 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 YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:10 am
GMP
-
IAD
2 stops26h 16m
Multiple Airlines
Thu 8/209:55 am
IAD
-
GMP
2 stops22h 30m
Multiple Airlines
Deal found 6/16$1,239
This YBTour deal was found by Cheapflights users on 6/16. 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 YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:00 am
GMP
-
IAD
2 stops25h 30m
Multiple Airlines
Fri 11/2010:00 pm
IAD
-
GMP
1 stop25h 05m
Multiple Airlines
Deal found 6/16$1,314
This Orbitz deal was found by Cheapflights users on 6/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:55 pm
GMP
-
IAD
2 stops31h 17m
ANA
Wed 9/212:15 pm
IAD
-
GMP
1 stop21h 05m
ANA
Deal found 6/18$1,591

Find flight deals from Seoul to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to Dulles Intl (IAD). 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 June 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$882
(Expedia)

One-way from

$659
(oojo)

Popular in

January

Cheapest in

November

Average price

$1,349

Good round-trip deal

$1,391 or less

Good one-way deal

$836 or less
Provider with most accurate pricing for Seoul (SEL)-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Washington, D.C. Dulles Intl flights.
Search Deals
From Seoul (SEL) to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Seoul (SEL) to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($167 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Seoul (SEL) to Washington, D.C. Dulles Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seoul to Dulles Intl 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 June 18, 2026.
Use the filters below to find and compare flights from Seoul to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 8/21

11:30 am-5:55 am

1 stop31h 25m

Washington, D.C. Dulles Intl

Thu 8/27

12:40 pm-3:00 pm

1 stop37h 20m

$1,000

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 10/14

11:30 am-4:18 pm

1 stop17h 48m

Washington, D.C. Dulles Intl

Wed 10/21

6:37 pm-4:20 am

1 stop20h 43m

$1,000

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sun 9/20

4:50 pm-12:57 am

1 stop21h 07m

Washington, D.C. Dulles Intl

Wed 9/30

6:35 am-3:00 pm

1 stop19h 25m

$1,002

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 7/20

11:30 am-7:30 am

1 stop33h 00m

Washington, D.C. Dulles Intl

Tue 7/21

10:21 pm-4:20 am

1 stop40h 59m

$1,005

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 8/5

7:05 pm-4:13 pm

1 stop34h 08m

Washington, D.C. Dulles Intl

Wed 9/2

3:45 pm-4:25 pm

1 stop35h 40m

$1,040

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sun 10/4

5:15 pm-4:26 pm

2 stops36h 11m

Washington, D.C. Dulles Intl

Mon 2/1

5:15 pm-5:40 am

2 stops22h 25m

$1,385
Quickest round-trip

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 10/16

10:00 am-10:50 am

Nonstop13h 50m

Washington, D.C. Dulles Intl

Mon 10/19

1:20 pm-5:55 pm

Nonstop15h 35m

$1,448

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 7/15

11:30 am-12:45 am

2 stops26h 15m

Washington, D.C. Dulles Intl

Wed 7/22

1:15 pm-4:20 am

2 stops26h 05m

$1,465

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 10/15

10:25 am-11:05 am

Nonstop13h 40m

Washington, D.C. Dulles Intl

Sun 10/18

7:59 pm-5:50 pm

1 stop32h 51m

$1,534

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 8/12

4:50 pm-5:25 am

2 stops25h 35m

Washington, D.C. Dulles Intl

Thu 8/13

10:10 pm-3:00 pm

1 stop27h 50m

$1,536

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/15

Showing 1-10 of 40 resultsSorted by cheapest first
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Compare providers for flights from Seoul to Dulles Intl

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 Seoul to Dulles Intl in June.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*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 Seoul-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seoul-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seoul-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seoul-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub 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 Seoul-Washington, D.C. Dulles Intl Airport 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 Seoul to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Seoul 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 Seoul to Washington, D.C. Dulles Intl Airport

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

Currently, September is the cheapest month in which you can book a flight from Seoul to Washington, D.C. Dulles Intl Airport (average of $275). Flying from Seoul to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $998). 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 SEL to IAD?

Find hourly flight availability from Seoul to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seoul to Washington, D.C. Dulles Intl Airport as you normally would.

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

Explore weekly flight availability from Seoul to Dulles Intl. 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 June 18, 2026.

The most flights from SEL to IAD are scheduled on a Monday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

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

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

Booking 36 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seoul to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. 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 Dulles Intl. Reviews last updated June 18, 2026.
Get a feel of what it's like to fly with Korean Air,AIR PREMIA, andDelta from Seoul to Washington, D.C. Dulles Intl Airport 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
1,218 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,218 reviews
Korean Air
8.4
Very good
1,218 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
AIR PREMIA
8.1
Very good
97 reviews
Korean Air
8.4
Very good
1,218 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Delta
7.8
Good
8,416 reviews
Korean Air
8.4
Very good
1,218 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
9,861 reviews
Korean Air
8.4
Very good
1,218 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
American Airlines
7.1
Good
11,699 reviews
Korean Air
8.4
Very good
1,218 reviews

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Crew

8.7

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from Seoul to Dulles Intl. 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 Seoul to Washington, D.C. Dulles Intl Airport?

    United Airlines, Air Canada, and ANA can get you from Seoul to Washington, D.C. Dulles Intl Airport in just under 27h 10m. Your travel time can differ by up to 6h 58m. Airlines will cover a distance of 6925 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    American Airlines, at $478, was found to be the cheapest airline from Seoul to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include United Airlines and Delta. These flights start at 60% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is AIR PREMIA, with whom users have recently found tickets for as low as $505. However, be on the lookout for offers from Delta and Air China, as they are both options that can get you from Seoul to Washington, D.C. Dulles Intl Airport for a low price.

  • What are the most reliable airlines from Seoul to Washington, D.C. Dulles Intl Airport?

    No one likes to see their flight delayed. When booking a flight from Seoul to Washington, D.C. Dulles Intl Airport consider choosing AIR PREMIA (96%), Delta (85%) or Korean Air (85%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $799. While the most popular route (Incheon Intl - Washington, D.C. Dulles Intl) can be booked for $941 on average, our data indicates $1,292 when flying from Seoul to Washington, D.C. Dulles Intl Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seoul to Dulles Intl 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 Seoul to Washington, D.C. Dulles Intl Airport?

    Currently, September is the cheapest month in which you can book a flight from Seoul to Washington, D.C. Dulles Intl Airport (average of $275). Flying from Seoul to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $998). 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Laurel
Hanover
Chantilly
Falls Church
Waldorf
Silver Spring
Largo
Clinton

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seoul to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Baltimore flights
Busan to Dulles Intl flights

Top 5 airlines flying from Seoul to Dulles Intl

Discover the top 5 airlines that operate flights from Seoul to Dulles Intl. 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 June 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$478Average$723FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$508Average$623FlexibilityNo cancel feeOn-time69%
DeltaCheapest$853Average$1,615FlexibilityNo cancel feeOn-timeN/A
AIR PREMIACheapest$915Average$1,198FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,257Average$1,650FlexibilityNo cancel feeOn-time81%

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