Dulles Intl

$435+ Cheap flights from Incheon Intl (ICN) 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — IAD
Mar 14 — Mar 211
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Find cheap flights from Incheon Intl to Dulles Intl with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Incheon Intl to Washington, D.C. Dulles Intl are usually found in November or February, booked 31 days in advance, depart on a Sunday or Tuesday and return on a Tuesday

Cheap flight deals from Incheon Intl to Dulles Intl

Cheapest flights from Incheon Intl to Dulles Intl
Explore the most affordable flight options available from Incheon Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.

This American Airlines deal was found by Cheapflights users on 2/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/127:15 pm
ICN
-
IAD
2 stops35h 01m
American Airlines
Thu 2/196:00 am
IAD
-
ICN
1 stop20h 45m
American Airlines
Deal found 2/11$786
This American Airlines deal was found by Cheapflights users on 2/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/275:50 pm
ICN
-
IAD
2 stops29h 12m
American Airlines
Mon 5/188:11 pm
IAD
-
ICN
2 stops30h 34m
American Airlines
Deal found 2/10$810
This American Airlines deal was found by Cheapflights users on 2/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/85:50 pm
ICN
-
IAD
1 stop18h 36m
American Airlines
Sun 6/1411:59 am
IAD
-
ICN
1 stop38h 46m
American Airlines
Deal found 2/10$814
This Alaska Airlines deal was found by Cheapflights users on 2/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:35 pm
ICN
-
IAD
1 stop23h 05m
Multiple Airlines
Fri 2/276:27 pm
IAD
-
ICN
1 stop34h 08m
Multiple Airlines
Deal found 2/10$817
This WhyPayMore deal was found by Cheapflights users on 2/11. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2410:00 am
ICN
-
IAD
Nonstop13h 50m
AIR PREMIA
Fri 7/171:20 pm
IAD
-
ICN
Nonstop15h 35m
AIR PREMIA
Deal found 2/11$821
This American Airlines deal was found by Cheapflights users on 2/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/117:15 pm
ICN
-
IAD
2 stops27h 33m
American Airlines
Tue 3/35:37 pm
IAD
-
ICN
1 stop33h 08m
American Airlines
Deal found 2/9$823
This American Airlines deal was found by Cheapflights users on 2/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/117:15 pm
ICN
-
IAD
2 stops27h 33m
American Airlines
Wed 2/185:37 pm
IAD
-
ICN
1 stop33h 08m
American Airlines
Deal found 2/11$825
This American Airlines deal was found by Cheapflights users on 2/12. 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.
Wed 3/47:15 pm
ICN
-
IAD
2 stops27h 33m
American Airlines
Thu 3/126:00 am
IAD
-
ICN
1 stop20h 55m
American Airlines
Deal found 2/12$829
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:10 pm
ICN
-
IAD
3 stops47h 17m
Multiple Airlines
Wed 10/211:20 pm
IAD
-
ICN
Nonstop15h 35m
Multiple Airlines
Deal found 2/10$832
This American Airlines deal was found by Cheapflights users on 2/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/177:15 pm
ICN
-
IAD
1 stop17h 38m
American Airlines
Thu 2/265:00 am
IAD
-
ICN
2 stops21h 45m
American Airlines
Deal found 2/10$835
This American Airlines deal was found by Cheapflights users on 2/12. 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 2/267:15 pm
ICN
-
IAD
1 stop17h 38m
American Airlines
Sun 3/14:46 pm
IAD
-
ICN
2 stops33h 59m
American Airlines
Deal found 2/12$837

Find flight deals from Incheon Intl to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) 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 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$786
(American Airlines)

One-way from

$435
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$996

Good round-trip deal

$1,198 or less

Good one-way deal

$801 or less
Provider with most accurate pricing for Incheon Intl-Washington, D.C. Dulles Intl flight deals.
Provider most trusted by Cheapflights users for Incheon Intl-Washington, D.C. Dulles Intl flights.
From Incheon Intl to Washington, D.C. Dulles Intl
One-way flight from Incheon Intl to Washington, D.C. Dulles Intl
Highest demand for flights based on searches. 5% potential increase in price ($67 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($35 potential savings vs. average RT price).
Average for round-trip flights in February 2026
Price to beat on a round-trip flight from Incheon Intl to Washington, D.C. Dulles Intl.
Price to beat on a one-way flight from Incheon Intl to Washington, D.C. Dulles Intl.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Incheon Intl 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 12, 2026.
Use the filters below to find and compare flights from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Incheon Intl

Fly to

Dulles Intl

Route

Depart

Return

Price

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sun 2/22

8:35 pm-5:40 am

1 stop23h 05m

Washington, D.C. Dulles Intl

Sun 3/1

7:05 am-6:35 pm

1 stop21h 30m

$817

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 2/23

8:35 pm-5:40 am

1 stop23h 05m

Washington, D.C. Dulles Intl

Tue 3/3

6:20 pm-6:35 pm

2 stops34h 15m

$850

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 4/24

7:35 pm-5:50 am

1 stop23h 15m

Washington, D.C. Dulles Intl

Sat 4/25

9:00 am-5:30 pm

1 stop19h 30m

$901

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 2/23

8:35 pm-5:20 pm

1 stop34h 45m

Washington, D.C. Dulles Intl

Thu 3/5

7:05 am-6:35 pm

1 stop21h 30m

$921

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 4/13

8:35 pm-5:40 am

1 stop22h 05m

Washington, D.C. Dulles Intl

Thu 4/23

9:00 am-5:30 pm

1 stop19h 30m

$924

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 4/28

4:50 pm-10:18 pm

1 stop18h 28m

Washington, D.C. Dulles Intl

Sat 5/9

10:35 pm-3:00 pm

2 stops27h 25m

$987

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 4/24

4:50 pm-5:28 am

2 stops25h 38m

Washington, D.C. Dulles Intl

Sat 4/25

5:55 pm-3:00 pm

1 stop32h 05m

$992

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 5/18

7:35 pm-4:33 pm

1 stop33h 58m

Washington, D.C. Dulles Intl

Mon 6/29

6:55 pm-5:30 pm

2 stops57h 35m

$995

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 7/1

11:30 am-1:17 am

1 stop26h 47m

Washington, D.C. Dulles Intl

Wed 7/29

6:30 am-3:00 pm

1 stop19h 30m

$1,003

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sun 4/19

6:00 pm-8:56 am

3 stops27h 56m

$467

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 20 results
1
2

Compare providers for flights from Incheon Intl 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 Incheon Intl to Dulles Intl in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
SmartFaresPrice Accuracy1 starTrust 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 Incheon Intl Airport-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 Incheon Intl Airport-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Incheon Intl Airport-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 Incheon Intl Airport-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 Incheon Intl Airport-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 Incheon Intl to Dulles Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from Incheon Intl to Dulles Intl. Price data was last updated on February 6, 2026.

To ensure you get the cheapest price possible for a flight from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport, you should look to book at least 31 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport (average of $439). Flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $1,434). 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 ICN to IAD?

Find hourly flight availability from Incheon Intl 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 12, 2026.

When flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

The best insider tips for Incheon Intl Airport to Washington, D.C. Dulles Intl Airport 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 Incheon Intl Airport to Washington, D.C. Dulles Intl Airport trip
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on ICN

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.

Ramsey Qubein

Ramsey Qubein

Expert on IAD

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.

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 12, 2026.
See what other customers who have flown with Korean Air, Delta, and United Airlines from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.7

Comfort

8.3

Overall

8.4

Boarding

8.5

Entertainment

8.2

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!!

Crew

8.7

Comfort

8.3

Overall

8.4

Boarding

8.5

Entertainment

8.2

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!!

Crew

8.7

Comfort

8.3

Overall

8.4

Boarding

8.5

Entertainment

8.2

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!!

Crew

8.7

Comfort

8.3

Overall

8.4

Boarding

8.5

Entertainment

8.2

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!!

Crew

8.7

Comfort

8.3

Overall

8.4

Boarding

8.5

Entertainment

8.2

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!!

Crew

8.7

Comfort

8.3

Overall

8.4

Boarding

8.5

Entertainment

8.2

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 Incheon Intl 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 Incheon Intl Airport to Washington, D.C. Dulles Intl Airport?

    Alaska Airlines can get you from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport in just under 23h 15m. Your travel time can differ by up to . The distance from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport is about 6939 mi.

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

    Cheapflights users have booked flights from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport round-trip from $501. Other airlines that can offer you cheap pricing are United Airlines, from $512, and Air Canada, from $727. These flights start at 59% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $443 on American Airlines. Other airlines that offer cheap prices include United Airlines from $457 and Korean Air from $776 one-way.

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

    Looking at all options, your cheapest flight can be booked for $727. While the most popular route (Incheon Intl - Washington, D.C. Dulles Intl) can be booked for $821 on average, our data indicates $1,230 when flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport (average of $439). Flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport in January is currently the most expensive (average of $1,434). 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
Laurel
Linthicum Heights
Rockville
Upper Marlboro
Manassas
Bowie
Largo
McLean
Clinton
Towson

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Alternative routes for Incheon Intl to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Incheon Intl to Dulles Intl

Discover the top 5 airlines that operate flights from Incheon Intl 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 12, 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$1,609FlexibilityNo cancel feeOn-timeN/A

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