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Washington, D.C.

$463+ Cheap flights from Incheon Intl (ICN) to Washington, D.C. (WAS)

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 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — WAS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Incheon Intl to Washington, D.C. are usually found in May or December, booked 45 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Incheon Intl to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Incheon Intl (ICN) to Washington, D.C. (WAS). 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 12, 2025.

Round-trip from

$823
(Mytrip)

One-way from

$463
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$1,125

Good round-trip deal

$1,241 or less

Good one-way deal

$1,156 or less
From Incheon Intl to Washington, D.C. (WAS)
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One-way flight from Incheon Intl to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 18% potential increase in price ($279 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($64 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 Incheon Intl to Washington, D.C. (WAS).
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Price to beat on a one-way flight from Incheon Intl to Washington, D.C. (WAS).
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Find flight deals from Incheon Intl to Washington, D.C.

Cheapest flights from Incheon Intl to Washington, D.C.
Explore the most affordable flight options available from Incheon Intl to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:45 pmICN - IAD
1 stop34h 05mWestJet
Fri 9/266:45 pmIAD - ICN
1 stop35h 00mWestJet
Deal found 6/12$823
This lol.travel 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/194:50 pmICN - BWI
1 stop25h 44mUnited Airlines
Fri 7/410:59 amBWI - ICN
2 stops28h 21mUnited Airlines
Deal found 6/12$829
This WhyPayMore 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/175:45 pmICN - DCA
2 stops28h 14mAir Canada
Wed 10/224:35 pmDCA - ICN
2 stops34h 30mAir Canada
Deal found 6/12$855
This WhyPayMore 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/175:45 pmICN - IAD
1 stop25h 46mAir Canada
Wed 10/225:37 pmIAD - ICN
1 stop33h 38mAir Canada
Deal found 6/12$857
This Asiana Airlines 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/278:40 pmICN - BWI
1 stop24h 26mMultiple Airlines
Wed 9/37:00 amBWI - ICN
1 stop32h 20mMultiple Airlines
Deal found 6/10$872
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/285:50 pmICN - IAD
2 stops25h 33mMultiple Airlines
Wed 11/56:11 pmIAD - ICN
2 stops56h 54mMultiple Airlines
Deal found 6/10$901
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:30 pmICN - IAD
1 stop34h 15mUnited Airlines
Fri 8/296:35 amIAD - ICN
1 stop32h 45mUnited Airlines
Deal found 6/11$908
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:35 amICN - DCA
2 stops24h 25mMultiple Airlines
Tue 12/306:00 amDCA - ICN
2 stops45h 05mMultiple Airlines
Deal found 6/11$964
This Kissandfly.com 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/168:40 pmICN - BWI
1 stop33h 14mAsiana Airlines
Tue 7/16:02 pmBWI - ICN
1 stop20h 58mAsiana Airlines
Deal found 6/10$1,020
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1010:25 amICN - IAD
Nonstop13h 30mDelta
Wed 11/265:10 pmIAD - ICN
1 stop34h 35mDelta
Deal found 6/12$1,045
This Alaska Airlines 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/138:35 pmICN - DCA
1 stop34h 24mAlaska Airlines
Tue 12/96:35 pmDCA - ICN
2 stops34h 00mAlaska Airlines
Deal found 6/10$1,053
This Asiana Airlines 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/102:40 pmICN - IAD
1 stop19h 41mAsiana Airlines
Fri 12/55:30 pmIAD - ICN
1 stop20h 50mAsiana Airlines
Deal found 6/10$1,057

Cheapflights Fare Finder

Customize your flight search to find flights from Incheon Intl to Washington, D.C. 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 12, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Washington, D.C. that are best for you.

Fly from

Incheon Intl

Fly to

Washington, D.C.

Route

Depart

Return

Price

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sun 9/21

8:45 pm-5:50 pm

1 stop34h 05m

Washington, D.C. Dulles Intl

Fri 9/26

6:45 pm-6:45 pm

1 stop35h 00m

$823

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Wed 9/17

5:45 pm-8:59 am

2 stops28h 14m

Washington, D.C. Reagan-National

Wed 10/22

4:35 pm-4:05 pm

2 stops34h 30m

$855

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 9/17

5:45 pm-6:31 am

1 stop25h 46m

Washington, D.C. Dulles Intl

Wed 10/22

5:37 pm-4:15 pm

1 stop33h 38m

$857

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Wed 8/27

8:40 pm-8:06 am

1 stop24h 26m

Baltimore/Washington

Wed 9/3

7:00 am-4:20 am

1 stop32h 20m

$872

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Mon 9/8

11:30 am-5:31 pm

1 stop19h 01m

Baltimore/Washington

Fri 10/31

4:12 pm-4:40 am

2 stops23h 28m

$881

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Tue 10/28

5:50 pm-6:23 am

2 stops25h 33m

Washington, D.C. Dulles Intl

Wed 11/5

6:11 pm-5:05 pm

2 stops56h 54m

$901

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 8/27

6:30 pm-3:45 pm

1 stop34h 15m

Washington, D.C. Dulles Intl

Fri 8/29

6:35 am-4:20 am

1 stop32h 45m

$908

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 9/10

10:25 am-10:55 am

Nonstop13h 30m

Washington, D.C. Dulles Intl

Wed 11/26

5:10 pm-5:45 pm

1 stop34h 35m

$1,045

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 9/24

2:40 pm-9:21 pm

1 stop19h 41m

Washington, D.C. Dulles Intl

Mon 12/8

5:30 pm-4:20 am

1 stop20h 50m

$1,050

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Sat 9/13

8:35 pm-5:59 pm

1 stop34h 24m

Washington, D.C. Reagan-National

Tue 12/9

6:35 pm-6:35 pm

2 stops34h 00m

$1,053

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 36 results
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The best insider tips for Incheon Intl Airport to Washington, D.C. 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. trip
Airports
ICN

Plan for extra time at security; lines can take up to 20 minutes, especially without fast track options.

Read more about ICNby Gabriel Leigh
IAD

Use the Silver Line Metro for a cheap, 40-minute ride to D.C. from IAD, just 5 minutes from the terminal.

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 Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. 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.

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

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

The best time to book flights from Incheon Intl Airport to Washington, D.C. is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, August is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. (average of $241). Flying from Incheon Intl Airport to Washington, D.C. in March is currently the most expensive (average of $290). 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 WAS?

Find hourly flight availability from Incheon Intl to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from Incheon Intl Airport to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 31% versus a flight in the morning.

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

Explore weekly flight availability from Incheon Intl to Washington, D.C.. 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 12, 2025.

The most flights from ICN to WAS 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 Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. 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. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., 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 Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated June 12, 2025.
Read through reviews of airlines operating flights from Seoul to Washington, D.C., such as EVA Air, Korean Air and Japan Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,490 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Asiana Airlines
8.2
Very good
440 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Singapore Airlines
8.1
Very good
1,302 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

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

    According to our current data, WestJet ($823), Air Canada ($855), and United Airlines ($881) offers the cheapest pricing from Incheon Intl Airport to Washington, D.C.. WestJet is priced at 31% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $588. WestJet flights start at $661 while deals on EVA Air start at $691 one-way.

  • What are the most popular routes from Incheon Intl Airport to Washington, D.C.?

    The most popular flight routes from Incheon Intl Airport to Washington, D.C. are Incheon Intl - Washington, D.C. Dulles Intl, Incheon Intl - Washington, D.C. Reagan-National and Incheon Intl - Baltimore/Washington.

  • Can I find deals for flights from Incheon Intl to Washington, D.C. that include hotel bookings?

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

  • How can I find direct flights from Incheon Intl to Washington, D.C.?

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

  • Can I find deals for business class flights from Incheon Intl to Washington, D.C.?

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

    Currently, August is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. (average of $241). Flying from Incheon Intl Airport to Washington, D.C. in March is currently the most expensive (average of $290). 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
Woodbridge
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Gaithersburg
Fairfax
Falls Church
Easton
Herndon
Towson
Bowie
Rockville
Reston
National Harbor
Springfield
Manassas
Dundalk

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Alternative routes for Incheon Intl to Washington, D.C.

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

Top 5 airlines flying from Incheon Intl to Washington, D.C.

Discover the top 5 airlines that operate flights from Incheon Intl to Washington, D.C.. 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$687Average$795FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$688Average$1,053FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$726Average$935FlexibilityNo cancel feeOn-time69%
DeltaCheapest$882Average$1,546FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,127Average$1,447FlexibilityNo cancel feeOn-time81%

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