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Dulles Intl

$435+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — IAD
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
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 February 3, 2026.

This Mytrip deal was found by Cheapflights users on 2/1. 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 3/26:55 pm
ICN
-
IAD
2 stops54h 49m
Air Canada
Mon 3/99:00 am
IAD
-
ICN
1 stop19h 25m
Air Canada
Deal found 2/1$678
This Air Canada deal was found by Cheapflights users on 2/1. 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 3/76:55 pm
ICN
-
IAD
2 stops39h 28m
Air Canada
Mon 5/118:15 am
IAD
-
ICN
2 stops42h 50m
Air Canada
Deal found 2/1$694
This FlightHub deal was found by Cheapflights users on 2/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/157:05 pm
ICN
-
IAD
1 stop38h 24m
Air Canada
Mon 6/14:10 pm
IAD
-
ICN
1 stop36h 20m
Air Canada
Deal found 2/1$696
This Gotogate deal was found by Cheapflights users on 2/1. 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 3/36:55 pm
ICN
-
IAD
2 stops40h 28m
Air Canada
Tue 3/109:55 am
IAD
-
ICN
2 stops42h 30m
Air Canada
Deal found 2/1$723
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/67:15 pm
ICN
-
IAD
2 stops39h 15m
American Airlines
Mon 3/99:19 am
IAD
-
ICN
2 stops41h 36m
American Airlines
Deal found 2/1$802
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:15 pm
ICN
-
IAD
1 stop17h 38m
American Airlines
Wed 3/45:00 am
IAD
-
ICN
2 stops21h 45m
American Airlines
Deal found 2/2$806
This Kissandfly.com deal was found by Cheapflights users on 2/2. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/197:15 pm
ICN
-
IAD
1 stop35h 35m
British Airways
Wed 3/46:00 am
IAD
-
ICN
1 stop20h 45m
British Airways
Deal found 2/2$814
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2411:30 am
ICN
-
IAD
1 stop32h 39m
United Airlines
Sat 4/2510:10 pm
IAD
-
ICN
1 stop27h 50m
United Airlines
Deal found 2/3$820
This United Airlines deal was found by Cheapflights users on 2/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2011:30 am
ICN
-
IAD
2 stops22h 26m
United Airlines
Fri 7/246:30 am
IAD
-
ICN
1 stop19h 30m
United Airlines
Deal found 2/2$821
This American Airlines deal was found by Cheapflights users on 2/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:15 pm
ICN
-
IAD
2 stops29h 45m
American Airlines
Tue 3/106:00 am
IAD
-
ICN
1 stop20h 55m
American Airlines
Deal found 2/1$826
This Alaska Airlines deal was found by Cheapflights users on 2/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/207:35 pm
ICN
-
IAD
1 stop24h 59m
Alaska Airlines
Wed 7/226:05 am
IAD
-
ICN
1 stop22h 25m
Alaska Airlines
Deal found 2/2$841
This Trip.com deal was found by Cheapflights users on 2/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:55 pm
GMP
-
IAD
1 stop27h 10m
ANA
Tue 11/311:10 am
IAD
-
GMP
1 stop21h 20m
ANA
Deal found 2/2$1,090

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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$678
(Mytrip)

One-way from

$435
(FlightHub)

Popular in

July

Cheapest in

November

Average price

$878

Good round-trip deal

$1,207 or less

Good one-way deal

$801 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. 4% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($50 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 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 February 3, 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

Seoul

Fly to

Dulles Intl

Route

Depart

Return

Price

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 5/22

11:30 am-1:17 am

1 stop26h 47m

Washington, D.C. Dulles Intl

Sun 7/26

5:55 pm-4:20 am

1 stop21h 25m

$841

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 5/1

11:30 am-6:00 am

1 stop31h 30m

Washington, D.C. Dulles Intl

Sat 5/9

10:10 pm-4:20 am

1 stop41h 10m

$951

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 5/22

7:35 pm-4:33 pm

1 stop33h 58m

Washington, D.C. Dulles Intl

Tue 7/21

5:01 pm-5:30 pm

1 stop35h 29m

$972

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 5/22

11:30 am-12:45 am

2 stops26h 15m

Washington, D.C. Dulles Intl

Thu 7/23

10:10 pm-3:00 pm

1 stop27h 50m

$978

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 5/25

7:35 pm-7:34 am

1 stop24h 59m

Washington, D.C. Dulles Intl

Mon 7/20

6:05 am-5:30 pm

1 stop22h 25m

$999

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 7/8

11:30 am-6:00 am

1 stop31h 30m

Washington, D.C. Dulles Intl

Tue 8/18

10:10 pm-3:00 pm

1 stop27h 50m

$1,009

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 4/24

7:35 pm-12:09 am

1 stop17h 34m

Washington, D.C. Dulles Intl

Fri 7/17

9:00 am-5:30 pm

1 stop19h 30m

$1,088

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Tue 5/12

7:55 pm-10:05 am

1 stop27h 10m

Washington, D.C. Dulles Intl

Tue 11/3

11:10 am-10:30 pm

1 stop21h 20m

$1,090

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Thu 2/19

7:50 pm-9:10 am

1 stop27h 20m

Washington, D.C. Dulles Intl

Wed 3/4

11:10 am-10:30 pm

1 stop21h 20m

$1,119

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 7/13

7:35 pm-7:32 am

1 stop24h 57m

Washington, D.C. Dulles Intl

Sun 8/23

6:30 am-5:30 pm

1 stop22h 00m

$1,139

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 41 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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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, 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 $992). 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 February 3, 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 February 3, 2026.

The most flights from SEL to IAD 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).

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 February 3, 2026.
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
1,188 reviews

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

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
1,188 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

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
8,138 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

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
9,236 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

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
11,218 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

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
10,684 reviews
Korean Air
8.4
Very good
1,188 reviews

Crew

8.7

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Boarding

8.5

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, Alaska Airlines, and ANA can get you from Seoul to Washington, D.C. Dulles Intl Airport in just under 26h 47m. Your travel time can differ by up to 7h 11m. Airlines will cover a distance of 6939 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 59% 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 American Airlines, with whom users have recently found tickets for as low as $440. However, be on the lookout for offers from United Airlines and Korean Air, 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 cheapest flights from Seoul to Washington, D.C. Dulles Intl Airport?

    Looking at all options, your cheapest flight can be booked for $636. While the most popular route (Incheon Intl - Washington, D.C. Dulles Intl) can be booked for $685 on average, our data indicates $1,219 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 $992). 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
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

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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 Baltimore flights
Incheon Intl to Reagan-National flights
Busan to Dulles Intl flights
Gimpo Intl to Baltimore 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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$501Average$783FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$512Average$731FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$727Average$965FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,128Average$1,514FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,254Average$1,580FlexibilityNo cancel feeOn-timeN/A

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