Washington, D.C.

$375+ 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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — WAS
Aug 4 — Aug 111
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Cheapflights Tip: The best prices from Incheon Intl to Washington, D.C. are usually found in May or March, booked 45 days in advance, depart on a Saturday 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 July 30, 2025.

Round-trip from

$490
(Trip.com)

One-way from

$375
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$1,560

Good round-trip deal

$1,318 or less
From Incheon Intl to Washington, D.C. (WAS)
One-way flight from Incheon Intl to Washington, D.C. (WAS)
Highest demand for flights based on searches. 11% potential increase in price ($154 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($34 potential savings vs. average RT price).
Average for round-trip flights in July 2025
Price to beat on a round-trip flight from Incheon Intl to Washington, D.C. (WAS).

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 July 30, 2025.

This Trip.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:00 pmICN - DCA
1 stop29h 20mAir Canada
Wed 9/244:35 pmDCA - ICN
1 stop34h 40mAir Canada
Deal found 7/29$490
This Booking.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:00 pmICN - IAD
2 stops30h 45mAir Canada
Thu 9/259:35 amIAD - ICN
1 stop17h 40mAir Canada
Deal found 7/29$520
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/274:50 pmICN - IAD
1 stop39h 02mUnited Airlines
Fri 8/2912:20 pmIAD - ICN
1 stop38h 30mUnited Airlines
Deal found 7/30$630
This Mytrip deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:00 pmICN - BWI
3 stops34h 25mMultiple Airlines
Wed 9/244:27 pmBWI - ICN
3 stops34h 48mMultiple Airlines
Deal found 7/29$686
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:40 pmICN - BWI
1 stop18h 07mDelta
Thu 9/47:15 amBWI - ICN
1 stop19h 05mDelta
Deal found 7/30$778
This Alaska Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:35 pmICN - DCA
1 stop35h 23mAlaska Airlines
Wed 11/126:58 pmDCA - ICN
2 stops33h 37mAlaska Airlines
Deal found 7/30$780
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1711:30 amICN - BWI
2 stops20h 42mUnited Airlines
Tue 9/2310:51 amBWI - ICN
2 stops28h 29mUnited Airlines
Deal found 7/30$791
This WhyPayMore deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/66:50 pmICN - BWI
1 stop18h 51mKorean Air
Tue 10/149:00 amBWI - ICN
1 stop19h 25mKorean Air
Deal found 7/29$806
This oojo deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/228:55 pmICN - BWI
1 stop21h 53mAsiana Airlines
Sun 9/217:37 pmBWI - ICN
1 stop33h 18mAsiana Airlines
Deal found 7/29$850
This American Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:50 pmICN - BWI
1 stop37h 23mAmerican Airlines
Fri 11/216:02 amBWI - ICN
1 stop20h 43mAmerican Airlines
Deal found 7/30$900

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 July 30, 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 - DCA

ICNDCA

Incheon Intl

Fri 9/12

6:00 pm-10:20 am

1 stop29h 20m

Washington, D.C. Reagan-National

Wed 9/24

4:35 pm-4:15 pm

1 stop34h 40m

$490

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Fri 9/12

6:00 pm-11:45 am

2 stops30h 45m

Washington, D.C. Dulles Intl

Thu 9/25

9:35 am-4:15 pm

1 stop17h 40m

$520

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 8/27

4:50 pm-6:52 pm

1 stop39h 02m

Washington, D.C. Dulles Intl

Fri 8/29

12:20 pm-3:50 pm

1 stop38h 30m

$630

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Fri 9/12

6:00 pm-3:25 pm

3 stops34h 25m

Baltimore/Washington

Wed 9/24

4:27 pm-4:15 pm

3 stops34h 48m

$686

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Thu 8/28

6:40 pm-11:47 pm

1 stop18h 07m

Baltimore/Washington

Thu 9/4

7:15 am-3:20 pm

1 stop19h 05m

$778

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Mon 11/3

8:35 pm-5:58 pm

2 stops35h 23m

Washington, D.C. Reagan-National

Wed 11/12

6:58 pm-6:35 pm

2 stops33h 37m

$780

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Wed 9/17

11:30 am-7:12 pm

2 stops20h 42m

Baltimore/Washington

Tue 9/23

10:51 am-4:20 am

2 stops28h 29m

$791

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Mon 10/6

6:50 pm-12:41 am

1 stop18h 51m

Baltimore/Washington

Tue 10/14

9:00 am-5:25 pm

1 stop19h 25m

$806

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Mon 12/22

12:45 pm-9:13 pm

1 stop22h 28m

Washington, D.C. Reagan-National

Mon 1/5

6:00 pm-5:40 am

1 stop21h 40m

$845

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Fri 8/22

8:55 pm-5:48 am

1 stop21h 53m

Baltimore/Washington

Sun 9/21

7:37 pm-5:55 pm

1 stop33h 18m

$850

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 19 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 July 25, 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 July 30, 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 July 30, 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).

How much does it cost to fly round-trip from Incheon Intl Airport to Washington, D.C.?

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 July 30, 2025.
Read through reviews of airlines operating flights from Incheon Intl Airport to Washington, D.C., such as EVA Air, Korean Air, and Asiana Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Overall

8.4

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

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Overall

8.4

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

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Overall

8.4

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

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Overall

8.4

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

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Overall

8.4

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
8.0
Very good

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Overall

8.4

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, Air Canada ($490), United Airlines ($630), and Delta ($778) offers the cheapest pricing from Incheon Intl Airport to Washington, D.C.. Air Canada is priced at 59% 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 $406. WestJet flights start at $498 while deals on Asiana Airlines start at $646 one-way.

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

  • 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 Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Easton
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Bowie

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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.

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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$688Average$831FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$688Average$980FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$724Average$825FlexibilityNo cancel feeOn-time69%
DeltaCheapest$882Average$1,543FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,127Average$1,403FlexibilityNo cancel feeOn-time81%

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