HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$385+ 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — IAD
Nov 1 — Nov 81
Sat 11/1
Sat 11/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Incheon Intl 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

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Incheon Intl to Washington, D.C. Dulles Intl are usually found in February or November, booked 46 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

Cheap 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 October 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$443
(Mytrip)

One-way from

$385
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$1,465

Good round-trip deal

$1,339 or less

Good one-way deal

$1,116 or less
Provider with most accurate pricing for Incheon Intl-Washington, D.C. Dulles Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Incheon Intl-Washington, D.C. Dulles Intl flights.
Search Deals
From Incheon Intl to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Incheon Intl to Washington, D.C. Dulles Intl
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($109 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Incheon Intl to Washington, D.C. Dulles Intl.
Search Deals
Price to beat on a one-way flight from Incheon Intl to Washington, D.C. Dulles Intl.
Search Deals

Find 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 October 2, 2025.

This Mytrip deal was found by Cheapflights users on 10/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:55 pmICN - IAD
2 stops39h 59mAir Canada
Thu 11/209:45 amIAD - ICN
2 stops41h 25mAir Canada
Deal found 10/2$443
This Mytrip deal was found by Cheapflights users on 10/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/225:45 pmICN - IAD
2 stops40h 20mAir Canada
Thu 10/304:30 pmIAD - ICN
2 stops34h 40mAir Canada
Deal found 10/2$457
This Air Canada deal was found by Cheapflights users on 9/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:55 pmICN - IAD
2 stops40h 27mAir Canada
Sat 1/310:08 pmIAD - ICN
2 stops29h 02mAir Canada
Deal found 9/30$466
This Air Canada deal was found by Cheapflights users on 10/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:55 pmICN - IAD
2 stops30h 28mAir Canada
Thu 1/110:08 pmIAD - ICN
2 stops29h 02mAir Canada
Deal found 10/2$468
This Air Canada deal was found by Cheapflights users on 9/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/86:55 pmICN - IAD
2 stops30h 44mAir Canada
Sun 1/44:30 pmIAD - ICN
2 stops34h 40mAir Canada
Deal found 9/30$472
This Air Canada deal was found by Cheapflights users on 9/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:55 pmICN - IAD
2 stops30h 28mAir Canada
Tue 12/305:16 pmIAD - ICN
2 stops33h 54mAir Canada
Deal found 9/29$474
This Air Canada deal was found by Cheapflights users on 9/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:55 pmICN - IAD
2 stops34h 56mAir Canada
Tue 1/1312:35 pmIAD - ICN
2 stops38h 35mAir Canada
Deal found 9/30$479
This Air Canada deal was found by Cheapflights users on 10/1. 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.
Thu 12/186:55 pmICN - IAD
2 stops34h 56mAir Canada
Wed 1/145:16 pmIAD - ICN
2 stops33h 54mAir Canada
Deal found 10/1$481
This Air Canada deal was found by Cheapflights users on 9/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/185:45 pmICN - IAD
2 stops28h 53mAir Canada
Sat 10/255:22 pmIAD - ICN
2 stops33h 48mAir Canada
Deal found 9/30$482
This Air Canada deal was found by Cheapflights users on 9/30. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/148:10 pmICN - IAD
1 stop29h 35mAir Canada
Mon 1/59:45 amIAD - ICN
2 stops41h 25mAir Canada
Deal found 9/30$485

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 October 2, 2025.
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 12/14

12:45 pm-4:25 pm

1 stop17h 40m

Washington, D.C. Dulles Intl

Mon 1/5

10:10 pm-4:15 pm

2 stops28h 05m

$501

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 12/8

6:00 pm-11:44 am

2 stops31h 44m

Washington, D.C. Dulles Intl

Tue 12/30

6:37 pm-5:40 am

1 stop21h 03m

$714

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 12/11

6:00 pm-11:55 pm

2 stops19h 55m

Washington, D.C. Dulles Intl

Tue 12/30

4:10 pm-5:40 am

1 stop23h 30m

$714

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 2/2

12:45 pm-6:47 am

1 stop32h 02m

Washington, D.C. Dulles Intl

Fri 2/20

6:20 am-4:15 pm

1 stop19h 55m

$714

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 12/9

6:00 pm-5:16 am

2 stops25h 16m

Washington, D.C. Dulles Intl

Tue 12/30

4:10 pm-5:40 am

1 stop23h 30m

$716

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sun 11/2

8:35 pm-6:23 am

1 stop23h 48m

Washington, D.C. Dulles Intl

Sun 11/9

6:13 pm-7:25 pm

2 stops59h 12m

$774

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 12/10

6:00 pm-5:27 am

1 stop25h 27m

Washington, D.C. Dulles Intl

Fri 1/2

10:10 pm-4:15 pm

2 stops28h 05m

$787

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 12/8

6:00 pm-12:56 am

1 stop20h 56m

Washington, D.C. Dulles Intl

Fri 1/2

10:10 pm-4:15 pm

2 stops28h 05m

$831

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sat 11/1

5:05 pm-5:27 am

1 stop25h 22m

Washington, D.C. Dulles Intl

Sun 11/9

6:30 am-4:15 pm

1 stop19h 45m

$958

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sat 11/1

5:05 pm-5:27 am

1 stop25h 22m

Washington, D.C. Dulles Intl

Sat 11/8

10:10 pm-4:15 pm

1 stop28h 05m

$958

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/1

Showing 1-10 of 22 results
1
2
3

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
GurufarePrice 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 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 September 26, 2025.

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 46 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, August is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 October 2, 2025.

One of the essential ways to save on airfare from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 28% on airfare.

The best insider tips for Incheon Intl Airport to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Incheon Intl Airport to Washington, D.C. Dulles Intl Airport trip
Airports
ICN

Plan for a 20-minute wait at security in ICN, especially if flying premium cabin without fast track access.

Read more about ICNby Gabriel Leigh
IAD

Use the Silver Line Metro to reach downtown from IAD in under 40 minutes, a cost-effective option for city access.

Read more about IADby Ramsey Qubein
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on ICN

Gabriel Leigh

Gabriel Leigh

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.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

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.

Read more

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 2, 2025.
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.
Korean Air
8.4
Very good
1,145 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Comfort

8.3

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
1,145 reviews
Korean Air
8.4
Very good
1,145 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Comfort

8.3

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
8.0
Very good
7,962 reviews
Korean Air
8.4
Very good
1,145 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Comfort

8.3

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
8,933 reviews
Korean Air
8.4
Very good
1,145 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Comfort

8.3

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
11,033 reviews
Korean Air
8.4
Very good
1,145 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Comfort

8.3

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
10,224 reviews
Korean Air
8.4
Very good
1,145 reviews

Overall

8.4

Entertainment

8.2

Crew

8.7

Food

8.1

Boarding

8.5

Comfort

8.3

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?

    United Airlines can get you from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport in just under 17h 40m. 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 $530, and Air Canada, from $873. These flights start at 63% lower than the current average price 3 months from now.

  • 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 $876. While the most popular route (Incheon Intl - Washington, D.C. Dulles Intl) can be booked for $518 on average, our data indicates $1,433 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, August is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Hanover
Gaithersburg
Fredericksburg
Fairfax
Linthicum Heights
Falls Church
Owings Mills
Manassas
Oxon Hill
Laurel
Towson
National Harbor
Dundalk
Waldorf

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Incheon Intl to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Reagan-National flights
Incheon Intl to Baltimore flights
Gimpo Intl to Baltimore flights

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 October 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$501Average$866FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$530Average$814FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$873Average$965FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,208Average$1,498FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,303Average$1,574FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights