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Dulles Intl

$442+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — IAD
Aug 24 — Aug 311
Sun 8/24
Sun 8/31
1 adult, Economy
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Cheapflights Tip: The best prices from Incheon Intl to Washington, D.C. Dulles Intl are usually found in February or April, booked 88 days in advance, depart on a Saturday or Tuesday and return on a Wednesday

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 August 19, 2025.

Round-trip from

$565
(American Airlines)

One-way from

$442
(Air Canada)

Popular in

August

Cheapest in

February

Average price

$1,754

Good round-trip deal

$1,306 or less
From Incheon Intl to Washington, D.C. Dulles Intl
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One-way flight from Incheon Intl to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 8% potential increase in price ($130 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Incheon Intl to Washington, D.C. Dulles Intl.
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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 August 19, 2025.

This American Airlines deal was found by Cheapflights users on 8/17. 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 9/105:25 pmICN - IAD
1 stop18h 23mAmerican Airlines
Wed 11/266:35 amIAD - ICN
1 stop20h 10mAmerican Airlines
Deal found 8/17$565
This Tourvis deal was found by Cheapflights users on 8/18. 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 9/158:35 pmICN - IAD
1 stop23h 58mHawaiian Airlines
Sun 12/77:35 amIAD - ICN
1 stop21h 00mHawaiian Airlines
Deal found 8/18$573
This Tourvis deal was found by Cheapflights users on 8/18. 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.
Sun 11/28:35 pmICN - IAD
1 stop23h 48mHawaiian Airlines
Sun 11/97:43 amIAD - ICN
1 stop20h 52mHawaiian Airlines
Deal found 8/18$574
This Flysmarter deal was found by Cheapflights users on 8/18. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/176:00 pmICN - IAD
1 stop30h 13mAir Canada
Wed 9/245:37 pmIAD - ICN
1 stop33h 38mAir Canada
Deal found 8/18$575
This American Airlines deal was found by Cheapflights users on 8/17. 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 9/175:25 pmICN - IAD
2 stops28h 18mAmerican Airlines
Sun 12/75:54 pmIAD - ICN
2 stops32h 51mAmerican Airlines
Deal found 8/17$576
This WhyPayMore deal was found by Cheapflights users on 8/17. 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 11/78:35 pmICN - IAD
1 stop34h 05mHawaiian Airlines
Fri 11/217:38 amIAD - ICN
1 stop20h 57mHawaiian Airlines
Deal found 8/17$578
This American Airlines deal was found by Cheapflights users on 8/18. 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 9/125:25 pmICN - IAD
1 stop18h 20mAmerican Airlines
Sun 9/286:00 pmIAD - ICN
1 stop32h 30mAmerican Airlines
Deal found 8/18$579
This Gotogate deal was found by Cheapflights users on 8/17. 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.
Fri 9/126:00 pmICN - IAD
2 stops28h 38mAir Canada
Thu 9/259:35 amIAD - ICN
1 stop17h 40mAir Canada
Deal found 8/17$580
This American Airlines deal was found by Cheapflights users on 8/17. 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 9/115:25 pmICN - IAD
1 stop30h 32mAmerican Airlines
Fri 9/196:25 amIAD - ICN
1 stop20h 05mAmerican Airlines
Deal found 8/17$585
This Alaska Airlines deal was found by Cheapflights users on 8/18. 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.
Sat 9/208:35 pmICN - IAD
1 stop23h 58mAlaska Airlines
Sat 12/67:35 amIAD - ICN
1 stop21h 00mAlaska Airlines
Deal found 8/18$586
This Mytrip deal was found by Cheapflights users on 8/16. 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 9/126:00 pmICN - IAD
2 stops28h 38mAir Canada
Tue 9/239:35 amIAD - ICN
1 stop17h 40mAir Canada
Deal found 8/16$587

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 August 19, 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

Sat 9/20

8:35 pm-7:33 am

1 stop23h 58m

Washington, D.C. Dulles Intl

Sun 9/28

7:00 am-6:35 pm

1 stop22h 35m

$586

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 11/3

8:35 pm-6:23 am

1 stop23h 48m

Washington, D.C. Dulles Intl

Sat 11/8

6:13 pm-6:35 pm

1 stop34h 22m

$586

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 11/3

8:35 pm-4:40 pm

1 stop34h 05m

Washington, D.C. Dulles Intl

Fri 11/7

7:43 am-6:35 pm

1 stop20h 52m

$586

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 11/3

8:35 pm-6:23 am

1 stop23h 48m

Washington, D.C. Dulles Intl

Sat 11/8

7:43 am-6:35 pm

1 stop20h 52m

$586

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 11/3

8:35 pm-6:23 am

1 stop23h 48m

Washington, D.C. Dulles Intl

Sun 11/9

7:43 am-6:35 pm

1 stop20h 52m

$586

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sat 9/20

8:35 pm-7:33 am

1 stop23h 58m

Washington, D.C. Dulles Intl

Tue 9/30

6:09 pm-6:35 pm

1 stop35h 26m

$586

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sat 9/20

8:35 pm-7:33 am

1 stop23h 58m

Washington, D.C. Dulles Intl

Sat 12/6

7:35 am-6:35 pm

1 stop21h 00m

$587

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 9/15

8:35 pm-7:33 am

1 stop23h 58m

Washington, D.C. Dulles Intl

Fri 12/5

7:35 am-6:35 pm

1 stop21h 00m

$587

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 9/19

8:35 pm-7:33 am

1 stop23h 58m

Washington, D.C. Dulles Intl

Sat 12/6

7:35 am-6:35 pm

1 stop21h 00m

$587

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 9/15

8:35 pm-7:33 am

1 stop23h 58m

Washington, D.C. Dulles Intl

Sun 12/7

7:35 am-6:35 pm

1 stop21h 00m

$587

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 22 results
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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

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 August 8, 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 88 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, July is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport (average of $302). 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 August 19, 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.

Weekly flight availability from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport

Explore weekly flight availability from Incheon Intl 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 August 19, 2025.

The most flights from ICN to IAD are scheduled on a Monday (2 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Incheon Intl Airport 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 August 19, 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
1,131 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,131 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Delta
8.0
Very good
7,981 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
8,922 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
American Airlines
7.2
Good
10,000 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Air Canada
7.1
Good
9,997 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Comfort

8.3

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?

    Hawaiian Airlines and Alaska Airlines can get you from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport in just under 23h 48m. Your travel time can differ by up to 10m. The distance from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport is about 6939 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $688. Other airlines that can offer you cheap pricing are United Airlines, from $721, and Air Canada, from $873. These flights start at 50% 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 $1,298. While the most popular route (Incheon Intl - Washington, D.C. Dulles Intl) can be booked for $578 on average our data indicates $1,899 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, July is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport (average of $302). 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
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Fairfax
Manassas
Falls Church
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Waldorf
Bowie

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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.
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 August 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$688Average$964FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$721Average$902FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$873Average$965FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,223Average$1,499FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,313Average$1,576FlexibilityNo cancel feeOn-timeN/A

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