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Dulles Intl

$444+ 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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — IAD
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
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 43 days in advance, depart on a Monday or Friday 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 March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$728
(WhyPayMore)

One-way from

$444
(American Airlines)

Popular in

August

Cheapest in

February

Average price

$1,349

Good round-trip deal

$1,381 or less

Good one-way deal

$1,162 or less
Provider with most accurate pricing for Incheon Intl-Washington, D.C. Dulles Intl flight deals.
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Provider most trusted by Cheapflights users for Incheon Intl-Washington, D.C. Dulles Intl flights.
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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. 13% potential increase in price ($232 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($46 potential savings vs. average RT price).
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Average for round-trip flights in March 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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Price to beat on a one-way 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 March 25, 2025.

This WhyPayMore deal was found by Cheapflights users on 3/23. 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 10/175:45 pmICN - IAD
2 stops26h 50mAir Canada
Sun 10/1910:05 pmIAD - ICN
2 stops29h 00mAir Canada
Deal found 3/23$734
This United Airlines deal was found by Cheapflights users on 3/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/265:00 pmICN - IAD
1 stop26h 50mUnited Airlines
Thu 3/2710:20 pmIAD - ICN
2 stops27h 55mUnited Airlines
Deal found 3/25$746
This Gotogate deal was found by Cheapflights users on 3/23. 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.
Mon 3/315:50 pmICN - IAD
1 stop38h 40mAir China
Tue 4/1511:00 pmIAD - ICN
1 stop33h 45mAir China
Deal found 3/23$778
This American Airlines deal was found by Cheapflights users on 3/24. 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 4/25:25 pmICN - IAD
1 stop17h 49mAmerican Airlines
Sat 8/167:07 amIAD - ICN
1 stop19h 23mAmerican Airlines
Deal found 3/24$789
This Korean Air deal was found by Cheapflights users on 3/24. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2210:00 amICN - IAD
1 stop22h 39mKorean Air
Thu 7/171:30 pmIAD - ICN
Nonstop15h 10mKorean Air
Deal found 3/24$947
This Kiwi.com deal was found by Cheapflights users on 3/24. 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.
Sat 4/512:45 pmICN - IAD
2 stops35h 10mMultiple Airlines
Wed 8/136:45 pmIAD - ICN
1 stop35h 00mMultiple Airlines
Deal found 3/24$982

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 March 25, 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

Mon 4/21

4:50 pm-7:00 am

1 stop27h 10m

Washington, D.C. Dulles Intl

Fri 4/25

6:05 pm-4:20 am

1 stop21h 15m

$746

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 5/8

5:45 pm-9:39 am

2 stops28h 54m

Washington, D.C. Dulles Intl

Thu 5/15

9:45 am-4:05 pm

2 stops41h 20m

$751

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 4/25

5:25 pm-8:38 am

2 stops28h 13m

Washington, D.C. Dulles Intl

Tue 5/6

5:07 pm-3:30 pm

1 stop33h 23m

$894

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 5/22

10:00 am-7:39 pm

1 stop22h 39m

Washington, D.C. Dulles Intl

Thu 7/17

1:30 pm-5:40 pm

Nonstop15h 10m

$947

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sat 4/5

12:45 pm-10:55 am

2 stops35h 10m

Washington, D.C. Dulles Intl

Wed 8/13

6:45 pm-6:45 pm

1 stop35h 00m

$982

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 4/4

5:50 pm-7:30 pm

1 stop38h 40m

Washington, D.C. Dulles Intl

Fri 8/15

11:00 pm-4:35 pm

1 stop28h 35m

$995

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 5/7

1:05 am-8:05 pm

1 stop32h 00m

Washington, D.C. Dulles Intl

Thu 5/22

9:40 pm-4:00 pm

1 stop29h 20m

$1,154

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 7/29

8:45 pm-5:54 pm

1 stop34h 09m

Washington, D.C. Dulles Intl

Fri 8/8

6:45 pm-6:45 pm

1 stop35h 00m

$1,184

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 4/2

5:25 pm-10:14 pm

1 stop17h 49m

$444

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 4/3

11:30 am-4:30 pm

1 stop18h 00m

$455

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust 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 March 21, 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 43 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 $309). Flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $387). 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 March 25, 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 March 25, 2025.

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

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 March 25, 2025.
To help decide which airline to fly from Seoul to Washington, D.C., see what other customers have to say about Korean Air, Singapore Airlines and United Airlines. 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
1,047 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Korean Air
8.4
Very good
1,047 reviews
Korean Air
8.4
Very good
1,047 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Singapore Airlines
8.1
Very good
1,284 reviews
Korean Air
8.4
Very good
1,047 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
United Airlines
7.4
Good
8,605 reviews
Korean Air
8.4
Very good
1,047 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
American Airlines
7.2
Good
10,000 reviews
Korean Air
8.4
Very good
1,047 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
WestJet
7.2
Good
2,785 reviews
Korean Air
8.4
Very good
1,047 reviews

Food

8.1

Crew

8.7

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

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.

  • 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 $728. Other airlines that can offer you cheap pricing are United Airlines, from $747, and American Airlines, from $890. These flights start at 49% 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 $444 on American Airlines. Other airlines that offer cheap prices include United Airlines from $455 and Air China from $457 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 $1,071. While the most popular route (Incheon Intl - Washington, D.C. Dulles Intl) can be booked for $747 on average our data indicates $1,533 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 $309). Flying from Incheon Intl Airport to Washington, D.C. Dulles Intl Airport in June is currently the most expensive (average of $387). 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 Incheon Intl Airport?

Book flights to Incheon Intl Airport if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Tysons
Springfield
Rockville
Woodbridge
Gaithersburg
Fredericksburg
Linthicum Heights
Silver Spring
Falls Church
Laurel
Easton
Herndon
Sterling
Bowie
Gettysburg
National Harbor
Oxon Hill

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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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$688Average$839FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$726Average$948FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$965Average$970FlexibilityNo cancel feeOn-time67%
DeltaCheapest$1,313Average$1,577FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,314Average$1,565FlexibilityNo cancel feeOn-time81%
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