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Dulles Intl

$610+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — IAD
Jun 2 — Jun 91
Tue 6/2
Tue 6/9
1 adult, Economy
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Find cheap flights from Seoul to Dulles Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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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 May 3, 2026.

This Gotogate deal was found by Cheapflights users on 4/29. 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.
Wed 6/177:55 pm
GMP
-
IAD
1 stop27h 10m
ANA
Mon 9/2112:15 pm
IAD
-
GMP
1 stop21h 05m
ANA
Deal found 4/29$999
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/2412:40 pm
GMP
-
IAD
1 stop34h 25m
ANA
Wed 8/2612:15 pm
IAD
-
GMP
1 stop21h 05m
ANA
Deal found 4/29$1,004
This WhyPayMore deal was found by Cheapflights users on 4/30. 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 5/2510:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Fri 6/51:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Deal found 4/30$1,024
This KAYAK deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/247:55 pm
GMP
-
IAD
1 stop27h 10m
ANA
Mon 9/281:05 pm
IAD
-
GMP
2 stops33h 00m
ANA
Deal found 4/29$1,038
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/227:55 pm
GMP
-
IAD
1 stop27h 10m
ANA
Mon 7/133:30 pm
IAD
-
GMP
2 stops30h 35m
ANA
Deal found 4/30$1,039
This Tourvis deal was found by Cheapflights users on 4/29. 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 Tourvis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Fri 6/51:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Deal found 4/29$1,039
This SmartFares deal was found by Cheapflights users on 4/29. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/310:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Mon 9/71:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Deal found 4/29$1,043
This Tourvis deal was found by Cheapflights users on 4/29. 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 Tourvis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Wed 10/71:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Deal found 4/29$1,045
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:55 pm
GMP
-
IAD
1 stop27h 10m
ANA
Wed 10/143:30 pm
IAD
-
GMP
2 stops30h 35m
ANA
Deal found 4/28$1,050
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 9/1610:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Mon 10/191:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Deal found 4/29$1,061
This SmartFares deal was found by Cheapflights users on 5/1. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/810:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Wed 7/151:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Deal found 5/1$1,096
This SmartFares deal was found by Cheapflights users on 4/29. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/1010:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Wed 9/161:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Deal found 4/29$1,097

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 May 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$999
(Gotogate)

One-way from

$610
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$1,261

Good round-trip deal

$1,107 or less

Good one-way deal

$690 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. 6% potential increase in price ($83 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sun 5/24

7:35 pm-7:34 am

1 stop24h 59m

Washington, D.C. Dulles Intl

Wed 8/26

9:00 am-5:30 pm

1 stop19h 30m

$1,147

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 6/8

11:45 pm-6:20 pm

1 stop31h 35m

Washington, D.C. Dulles Intl

Thu 6/11

9:00 pm-5:30 pm

1 stop31h 30m

$1,320

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 5/26

11:45 pm-6:20 pm

1 stop31h 35m

Washington, D.C. Dulles Intl

Tue 6/2

9:00 pm-5:30 pm

1 stop31h 30m

$1,322

SeoulWashington, D.C.

GMP - IAD

GMPIAD

Seoul Gimpo Intl

Wed 10/21

7:55 pm-10:05 am

1 stop27h 10m

Washington, D.C. Dulles Intl

Sun 11/1

8:35 am-11:20 am

2 stops36h 45m

$1,334

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sat 6/6

4:50 pm-5:27 am

2 stops25h 37m

Washington, D.C. Dulles Intl

Wed 9/9

3:02 pm-4:20 am

2 stops24h 18m

$1,336

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 7/13

1:20 am-3:40 pm

1 stop27h 20m

Washington, D.C. Dulles Intl

Mon 8/3

9:00 pm-5:05 pm

1 stop31h 05m

$1,340

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 6/18

1:20 am-3:40 pm

1 stop27h 20m

Washington, D.C. Dulles Intl

Mon 9/21

9:00 pm-5:05 pm

1 stop31h 05m

$1,361

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 6/24

9:05 pm-11:48 am

1 stop27h 43m

Washington, D.C. Dulles Intl

Mon 9/28

5:54 pm-4:30 am

1 stop21h 36m

$1,391

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 10/27

12:20 am-4:55 pm

1 stop29h 35m

Washington, D.C. Dulles Intl

Sun 11/1

8:05 pm-5:15 pm

1 stop31h 10m

$1,396

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 5/25

11:00 am-6:20 pm

2 stops44h 20m

Washington, D.C. Dulles Intl

Fri 6/5

9:00 pm-5:30 pm

1 stop31h 30m

$1,478

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 41 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 May.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust 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

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

Booking 27 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.

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 May 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 May 3, 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?

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 May 3, 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
1,216 reviews

Comfort

8.3

Boarding

8.5

Crew

8.7

Food

8.1

Entertainment

8.2

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
1,216 reviews
Korean Air
8.4
Very good
1,216 reviews

Comfort

8.3

Boarding

8.5

Crew

8.7

Food

8.1

Entertainment

8.2

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
90 reviews
Korean Air
8.4
Very good
1,216 reviews

Comfort

8.3

Boarding

8.5

Crew

8.7

Food

8.1

Entertainment

8.2

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
7.9
Good
8,462 reviews
Korean Air
8.4
Very good
1,216 reviews

Comfort

8.3

Boarding

8.5

Crew

8.7

Food

8.1

Entertainment

8.2

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
9,682 reviews
Korean Air
8.4
Very good
1,216 reviews

Comfort

8.3

Boarding

8.5

Crew

8.7

Food

8.1

Entertainment

8.2

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
11,674 reviews
Korean Air
8.4
Very good
1,216 reviews

Comfort

8.3

Boarding

8.5

Crew

8.7

Food

8.1

Entertainment

8.2

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?

    Alaska Airlines, Qatar Airways, and ANA can get you from Seoul to Washington, D.C. Dulles Intl Airport in just under 24h 59m. Your travel time can differ by up to 6h 36m. 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 $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 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 AIR PREMIA, with whom users have recently found tickets for as low as $501. However, be on the lookout for offers from American Airlines and United Airlines, 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 (100%), Delta (89%) or Korean Air (89%) 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 $603. While the most popular route (Incheon Intl - Washington, D.C. Dulles Intl) can be booked for $1,039 on average, our data indicates $1,178 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
Tysons
Owings Mills
Springfield
Arlington
Silver Spring
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Woodbridge
Hanover
Laurel
Largo
Upper Marlboro
Waldorf
Clinton
Hunt Valley
Cordova

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 May 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$478Average$723FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$508Average$644FlexibilityNo cancel feeOn-time69%
DeltaCheapest$853Average$1,609FlexibilityNo cancel feeOn-timeN/A
AIR PREMIACheapest$915Average$1,088FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,208Average$1,573FlexibilityNo cancel feeOn-time81%

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