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Dulles Intl

$358+ Cheap flights from Seoul (SEL) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — IAD
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap 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 October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$358
(Hanatour)

Popular in

April

Cheapest in

November

Average price

$1,217

Good round-trip deal

$1,392 or less

Good one-way deal

$1,080 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.
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From Seoul (SEL) to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($435 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($83 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 Seoul (SEL) to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from Seoul (SEL) to Washington, D.C. Dulles Intl.
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Find 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 October 28, 2025.

This Hanatour deal was found by Cheapflights users on 10/27. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:55 pmICN - IAD
2 stops34h 51mAir Canada
Sat 11/294:30 pmIAD - ICN
2 stops34h 40mAir Canada
Deal found 10/27$358
This Hanatour deal was found by Cheapflights users on 10/28. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/116:55 pmICN - IAD
2 stops34h 51mAir Canada
Tue 11/184:30 pmIAD - ICN
2 stops34h 40mAir Canada
Deal found 10/28$359
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/106:55 pmICN - IAD
2 stops39h 59mAir Canada
Sun 11/239:45 amIAD - ICN
2 stops41h 25mAir Canada
Deal found 10/26$416
This Flightnetwork deal was found by Cheapflights users on 10/28. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/136:55 pmICN - IAD
2 stops39h 59mAir Canada
Wed 11/269:00 amIAD - ICN
1 stop19h 25mAir Canada
Deal found 10/28$443
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.
Thu 10/305:55 pmICN - IAD
2 stops30h 44mAir Canada
Sat 11/81:20 pmIAD - ICN
2 stops37h 50mAir Canada
Deal found 10/26$458
This Gotogate deal was found by Cheapflights users on 10/28. 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.
Tue 11/48:10 pmICN - IAD
2 stops38h 44mAir Canada
Tue 11/119:45 amIAD - ICN
2 stops41h 25mAir Canada
Deal found 10/28$460
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.
Thu 10/305:55 pmICN - IAD
2 stops30h 44mAir Canada
Thu 11/1310:11 pmIAD - ICN
2 stops28h 59mAir Canada
Deal found 10/26$464
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.
Tue 12/236:55 pmICN - IAD
2 stops35h 35mAir Canada
Mon 1/129:45 amIAD - ICN
2 stops40h 15mAir Canada
Deal found 10/26$465
This Air Canada deal was found by Cheapflights users on 10/28. 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 11/26:55 pmICN - IAD
2 stops40h 27mAir Canada
Sat 11/84:30 pmIAD - ICN
2 stops34h 40mAir Canada
Deal found 10/28$467
This WhyPayMore 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/1512:25 pmGMP - IAD
1 stop34h 45mANA
Fri 2/2711:10 amIAD - GMP
1 stop21h 20mANA
Deal found 10/26$1,026
This Gotogate deal was found by Cheapflights users on 10/28. 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.
Thu 12/47:45 amGMP - IAD
2 stops37h 42mANA
Fri 12/511:10 amIAD - GMP
1 stop34h 10mANA
Deal found 10/28$1,130
This Rumbo deal was found by Cheapflights users on 10/28. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1312:25 pmGMP - IAD
1 stop34h 45mANA
Wed 11/2611:10 amIAD - GMP
1 stop34h 10mANA
Deal found 10/28$1,360

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 October 28, 2025.
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

Seoul

Fly to

Dulles Intl

Route

Depart

Return

Price

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 2/2

8:35 pm-4:26 pm

1 stop33h 51m

Washington, D.C. Dulles Intl

Fri 2/20

7:00 am-6:35 pm

1 stop21h 35m

$472

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 12/12

6:00 pm-11:23 am

2 stops31h 23m

Washington, D.C. Dulles Intl

Sun 1/4

10:10 pm-4:15 pm

2 stops28h 05m

$490

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 3/23

11:45 am-5:16 am

2 stops30h 31m

Washington, D.C. Dulles Intl

Mon 6/1

5:15 pm-4:20 am

2 stops22h 05m

$490

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 12/9

12:45 pm-4:25 pm

1 stop17h 40m

Washington, D.C. Dulles Intl

Tue 1/6

2:10 pm-5:40 am

1 stop25h 30m

$499

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 2/2

12:45 pm-8:54 pm

1 stop22h 09m

Washington, D.C. Dulles Intl

Fri 2/20

6:20 am-4:15 pm

1 stop19h 55m

$702

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sun 11/9

6:00 pm-12:56 am

1 stop20h 56m

Washington, D.C. Dulles Intl

Mon 11/10

10:10 pm-4:15 pm

1 stop28h 05m

$743

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 2/11

12:45 pm-8:54 pm

1 stop22h 09m

Washington, D.C. Dulles Intl

Mon 3/9

6:25 am-3:15 pm

1 stop19h 50m

$975

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 1/13

6:00 pm-5:32 am

1 stop25h 32m

Washington, D.C. Dulles Intl

Fri 4/10

6:30 am-3:00 pm

1 stop19h 30m

$996

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 12/23

10:15 am-9:50 am

Nonstop13h 35m

Washington, D.C. Dulles Intl

Thu 1/15

7:49 pm-5:45 pm

1 stop31h 56m

$1,008

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 11/20

10:15 am-9:50 am

Nonstop13h 35m

Washington, D.C. Dulles Intl

Thu 11/27

7:49 pm-5:45 pm

1 stop31h 56m

$1,008

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 36 results
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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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seoul-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. eDreams >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 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 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, November is the cheapest month in which you can book a flight from Seoul to Washington, D.C. Dulles Intl Airport (average of $439). Flying from Seoul to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $1,022). 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 October 28, 2025.

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.

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

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 October 28, 2025.
Get a feel of what it's like to fly with Korean Air, Delta, and United Airlines 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
1,153 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

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
1,153 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

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
7.9
Good
7,993 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

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
8,996 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

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
7.2
Good
11,034 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

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 Canada
7.1
Good
10,370 reviews
Korean Air
8.4
Very good
1,153 reviews

Boarding

8.5

Comfort

8.3

Crew

8.7

Entertainment

8.2

Overall

8.4

Food

8.1

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?

    Alaska Airlines, United Airlines, and ANA can get you from Seoul to Washington, D.C. Dulles Intl Airport in just under 27h 20m. Your travel time can differ by up to 6h 31m. 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 $501, 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 Air Canada. These flights start at 61% lower than the current average price 3 months from now.

  • 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 $655. While the most popular route (Incheon Intl - Washington, D.C. Dulles Intl) can be booked for $468 on average, our data indicates $1,330 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, November is the cheapest month in which you can book a flight from Seoul to Washington, D.C. Dulles Intl Airport (average of $439). Flying from Seoul to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $1,022). 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
Woodbridge
Tysons
Arlington
Springfield
Hanover
Silver Spring
Fairfax
Fredericksburg
Falls Church
Owings Mills
Linthicum Heights
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf
Bowie

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 Dulles Intl flights
Incheon Intl to Reagan-National flights
Incheon Intl to Baltimore flights
Gimpo 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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$501Average$964FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$519Average$740FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$873Average$965FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,208Average$1,504FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,303Average$1,576FlexibilityNo cancel feeOn-timeN/A

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