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Incheon Intl

$592+ Cheap flights from Dulles Intl (IAD) to Incheon Intl (ICN)

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ICN
Jun 18 — Jun 251
Wed 6/18
Wed 6/25
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. Dulles Intl to Incheon Intl are usually found in November or January, booked 28 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Dulles Intl to Incheon Intl

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Incheon Intl (ICN). 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 June 13, 2025.

Round-trip from

$1,314
(Air Canada)

One-way from

$592
(Gotogate)

Popular in

June

Cheapest in

November

Average price

$2,214

Good round-trip deal

$1,046 or less

Good one-way deal

$624 or less
From Washington, D.C. Dulles Intl to Incheon Intl
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One-way flight from Washington, D.C. Dulles Intl to Incheon Intl
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Highest demand for flights based on searches. 15% potential increase in price ($321 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Incheon Intl.
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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Incheon Intl.
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Find flight deals from Dulles Intl to Incheon Intl

Cheapest flights from Dulles Intl to Incheon Intl
Explore the most affordable flight options available from Dulles Intl to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 13, 2025.

This Air Canada deal was found by Cheapflights users on 6/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:13 pmIAD - ICN
2 stops34h 02mAir Canada
Wed 10/226:00 pmICN - IAD
1 stop30h 13mAir Canada
Deal found 6/12$1,314
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/219:40 pmIAD - ICN
1 stop22h 00mTurkish Airlines
Sun 8/3111:20 pmICN - IAD
1 stop25h 25mTurkish Airlines
Deal found 6/12$1,315
This Trip.com deal was found by Cheapflights users on 6/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/31:30 pmIAD - ICN
1 stop39h 10mMultiple Airlines
Fri 9/1212:35 amICN - IAD
2 stops32h 30mMultiple Airlines
Deal found 6/11$1,322
This oojo deal was found by Cheapflights users on 6/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/165:31 pmIAD - ICN
2 stops30h 09mCathay Pacific
Fri 10/243:10 pmICN - IAD
2 stops56h 35mCathay Pacific
Deal found 6/12$1,336
This WestJet deal was found by Cheapflights users on 6/11. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/266:45 pmIAD - ICN
1 stop35h 00mWestJet
Thu 10/98:45 pmICN - IAD
1 stop34h 05mWestJet
Deal found 6/11$1,383
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/105:51 pmIAD - ICN
3 stops35h 34mAlaska Airlines
Mon 11/179:25 pmICN - IAD
2 stops33h 41mAlaska Airlines
Deal found 6/12$1,405
This Lufthansa deal was found by Cheapflights users on 6/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2510:20 pmIAD - ICN
1 stop22h 35mLufthansa
Mon 9/1512:25 pmICN - IAD
2 stops40h 00mLufthansa
Deal found 6/10$1,506

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl to Incheon 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 June 13, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport that are best for you.

Fly from

Dulles Intl

Fly to

Incheon Intl

Route

Depart

Return

Price

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 10/8

5:13 pm-4:15 pm

2 stops34h 02m

Incheon Intl

Wed 10/22

6:00 pm-11:13 am

1 stop30h 13m

$1,314

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 8/21

9:40 pm-8:40 am

1 stop22h 00m

Incheon Intl

Sun 8/31

11:20 pm-11:45 am

1 stop25h 25m

$1,315

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 9/3

1:30 pm-5:40 pm

1 stop39h 10m

Incheon Intl

Fri 9/12

12:35 am-8:05 pm

2 stops32h 30m

$1,322

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 10/16

5:31 pm-12:40 pm

2 stops30h 09m

Incheon Intl

Fri 10/24

3:10 pm-10:45 am

2 stops56h 35m

$1,336

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 9/26

6:45 pm-6:45 pm

1 stop35h 00m

Incheon Intl

Thu 10/9

8:45 pm-5:50 pm

1 stop34h 05m

$1,383

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 11/10

5:51 pm-7:25 pm

3 stops35h 34m

Incheon Intl

Mon 11/17

9:25 pm-5:06 pm

2 stops33h 41m

$1,405

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 8/25

10:20 pm-9:55 am

1 stop22h 35m

Incheon Intl

Mon 9/15

12:25 pm-3:25 pm

2 stops40h 00m

$1,506

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 9/5

1:30 pm-5:40 pm

1 stop39h 10m

$592

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 7/10

4:10 pm-6:45 pm

2 stops37h 35m

$595

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Sat 8/9

9:45 am-4:15 pm

1 stop17h 30m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 17 results
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The best insider tips for Washington, D.C. Dulles Intl Airport to Incheon 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 Washington, D.C. Dulles Intl Airport to Incheon Intl Airport trip
Airports
IAD

Expect long security queues at IAD, especially in the afternoon. Plan extra time to navigate between terminals.

Read more about IADby Ramsey Qubein
ICN

The AREX express train is a quick option from ICN to Seoul Station, taking about 40-50 minutes.

Read more about ICNby Gabriel Leigh
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 Dulles Intl to Incheon Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from Dulles Intl to Incheon Intl. Price data was last updated on June 9, 2025.

Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport (average of $1,000). Flying from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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 IAD to ICN?

Find hourly flight availability from Dulles Intl to Incheon Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 13, 2025.

It’s optimal to fly from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport in the evening. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Dulles Intl to Incheon Intl. Price data was last updated on June 8, 2025.

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Incheon Intl Airport flight should consider departing on Monday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

Explore weekly flight availability from Dulles Intl to Incheon 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 June 13, 2025.

The most flights from IAD to ICN 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 Incheon Intl by month

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

In terms of precipitation, rainfall in Incheon Intl Airport ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Incheon Intl Airport when rainfall is around 0.8 in.

Temperature in Incheon Intl by month

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

If weather is an important factor for your trip to Incheon Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Incheon Intl

Get insights into the airlines that provide service to Incheon 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 Incheon Intl. Reviews last updated June 13, 2025.
Read reviews from past customers who have flown Korean Air, China Airlines and Alaska Airlines from Washington, D.C. to Seoul. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,091 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,091 reviews
Korean Air
8.4
Very good
1,091 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.3
Very good
738 reviews
Korean Air
8.4
Very good
1,091 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Alaska Airlines
8.0
Very good
10,000 reviews
Korean Air
8.4
Very good
1,091 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Cathay Pacific
7.6
Good
892 reviews
Korean Air
8.4
Very good
1,091 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Etihad Airways
7.4
Good
1,211 reviews
Korean Air
8.4
Very good
1,091 reviews

Comfort

8.3

Entertainment

8.2

Boarding

8.5

Crew

8.7

Overall

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Incheon 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 Washington, D.C. Dulles Intl Airport to Incheon Intl Airport round-trip?

    Our cheapest airline available from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport is Air Canada. Our recent data shows that you can find tickets from as low as $1,314 on this airline. Additional options worth looking into are Turkish Airlines and Cathay Pacific, starting at $1,315 and $1,336 round-trip. Air Canada is 25% cheaper than the average price of flights available within the next 90 days to this destination.

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

    The cheapest airlines for a one-way flight from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport are Turkish Airlines ($592), Air Canada ($605), and China Airlines ($662).

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

    On average you can expect to pay $4,266 for a flight from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport. The cheapest flight overall is $497 while the most popular route, (Washington, D.C. Dulles Intl - Incheon Intl) is currently priced at $951.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport (average of $1,000). Flying from Washington, D.C. Dulles Intl Airport to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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
Suwon
Seongnam
Daejeon

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Alternative routes for Dulles Intl to Incheon Intl

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

Top 8 airlines flying from Dulles Intl to Incheon Intl

Discover the top 8 airlines that operate flights from Dulles Intl to Incheon 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 June 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$367Average$2,347FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$591Average$747FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$759Average$1,597FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$809Average$1,040FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$865Average$1,191FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$876Average$1,257FlexibilityNo cancel feeOn-time71%
Korean AirCheapest$1,548Average$1,871FlexibilityNo cancel feeOn-time81%
DeltaCheapest$1,575Average$2,092FlexibilityNo cancel feeOn-timeN/A

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