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Washington, D.C.

$381+ Cheap flights from Incheon Intl (ICN) to Washington, D.C. (WAS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — WAS
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Incheon Intl to Washington, D.C. are usually found in September or December, booked 87 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 September 15, 2025.

Round-trip from

$385
(Jetabroad)

One-way from

$382
(Trip.com)

Popular in

July

Cheapest in

September

Average price

$617

Good round-trip deal

$1,526 or less

Good one-way deal

$1,105 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 ($248 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($42 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This Onlinetour deal was found by Cheapflights users on 9/13. 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 Onlinetour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:05 pmICN - DCA
1 stop35h 59mAir Canada
Mon 9/224:35 pmDCA - ICN
1 stop34h 40mAir Canada
Deal found 9/13$381
This Jetabroad deal was found by Cheapflights users on 9/13. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/287:10 pmICN - IAD
1 stop38h 19mAir Canada
Tue 11/44:25 pmIAD - ICN
2 stops34h 45mAir Canada
Deal found 9/13$385
This Onlinetour deal was found by Cheapflights users on 9/13. 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 Onlinetour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:05 pmICN - IAD
1 stop31h 33mAir Canada
Mon 9/222:25 pmIAD - ICN
1 stop38h 05mAir Canada
Deal found 9/13$388
This Mytrip deal was found by Cheapflights users on 9/13. 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 10/245:45 pmICN - DCA
2 stops31h 23mAir Canada
Sun 11/94:10 pmDCA - ICN
2 stops35h 00mAir Canada
Deal found 9/13$446
This Gotogate deal was found by Cheapflights users on 9/14. 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.
Wed 10/295:55 pmICN - DCA
2 stops31h 24mAir Canada
Wed 11/511:05 amDCA - ICN
2 stops40h 05mAir Canada
Deal found 9/14$452
This Booking.com deal was found by Cheapflights users on 9/13. 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 10/245:45 pmICN - IAD
2 stops28h 53mAir Canada
Sun 11/94:25 pmIAD - ICN
2 stops34h 45mAir Canada
Deal found 9/13$462
This Air Canada deal was found by Cheapflights users on 9/13. 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 11/196:55 pmICN - IAD
2 stops30h 28mAir Canada
Wed 2/119:45 amIAD - ICN
2 stops41h 25mAir Canada
Deal found 9/13$471
This Air Canada deal was found by Cheapflights users on 9/13. 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 11/196:55 pmICN - DCA
2 stops29h 31mAir Canada
Thu 2/124:10 pmDCA - ICN
2 stops35h 00mAir Canada
Deal found 9/13$471
This Air Canada deal was found by Cheapflights users on 9/12. 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 11/126:55 pmICN - IAD
2 stops30h 28mAir Canada
Tue 2/35:48 pmIAD - ICN
2 stops33h 22mAir Canada
Deal found 9/12$472
This Air Canada deal was found by Cheapflights users on 9/12. 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 11/126:55 pmICN - DCA
2 stops29h 31mAir Canada
Thu 2/54:10 pmDCA - ICN
2 stops35h 00mAir Canada
Deal found 9/12$472
This WhyPayMore deal was found by Cheapflights users on 9/14. 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 11/76:55 pmICN - IAD
2 stops39h 31mAir Canada
Fri 11/214:25 pmIAD - ICN
2 stops34h 45mAir Canada
Deal found 9/14$475
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/206:55 pmICN - IAD
2 stops35h 14mAir Canada
Thu 12/44:30 pmIAD - ICN
2 stops34h 40mAir Canada
Deal found 9/14$477

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 September 15, 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

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Fri 3/13

5:00 pm-10:19 am

2 stops30h 19m

Baltimore/Washington

Tue 3/17

6:15 am-3:15 pm

1 stop20h 00m

$503

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Mon 12/15

12:45 pm-3:11 pm

2 stops40h 26m

Baltimore/Washington

Fri 2/27

4:06 pm-4:15 pm

2 stops34h 09m

$503

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Wed 12/3

12:45 pm-11:00 pm

2 stops24h 15m

Baltimore/Washington

Sun 12/7

10:20 am-5:40 am

2 stops29h 20m

$503

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Sat 2/28

6:00 pm-5:09 am

2 stops25h 09m

Washington, D.C. Dulles Intl

Sat 3/7

5:30 pm-5:40 am

1 stop22h 10m

$503

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 12/3

6:00 pm-5:27 am

1 stop25h 27m

Washington, D.C. Dulles Intl

Sun 12/7

5:15 pm-5:40 am

2 stops22h 25m

$503

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Thu 11/20

12:45 pm-11:44 pm

2 stops24h 59m

Washington, D.C. Dulles Intl

Thu 12/4

6:30 am-4:15 pm

1 stop19h 45m

$503

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 11/24

6:00 pm-5:16 am

2 stops25h 16m

Washington, D.C. Dulles Intl

Thu 12/4

6:39 pm-5:40 am

1 stop21h 01m

$503

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Wed 10/29

11:55 am-6:55 am

1 stop32h 00m

Washington, D.C. Dulles Intl

Wed 11/5

6:30 am-4:15 pm

1 stop19h 45m

$503

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Thu 2/19

12:45 pm-11:59 pm

2 stops25h 14m

Washington, D.C. Reagan-National

Mon 2/23

5:50 pm-4:15 pm

1 stop32h 25m

$503

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Wed 12/3

6:00 pm-8:58 am

2 stops28h 58m

Washington, D.C. Reagan-National

Sun 12/7

12:00 pm-5:40 am

2 stops27h 40m

$503

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 49 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 September 12, 2025.

The best time to book flights from Incheon Intl Airport to Washington, D.C. is 85 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 $292). Flying from Incheon Intl Airport to Washington, D.C. 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 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 September 15, 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 32% 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 September 15, 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).

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 September 15, 2025.
Read through reviews of airlines operating flights from Incheon Intl Airport to Washington, D.C., such as Korean Air, Asiana Airlines, and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

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
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

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!!
Asiana Airlines
8.2
Very good
479 reviews
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

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
7,954 reviews
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

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
8,929 reviews
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

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
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Food

8.1

Boarding

8.5

Comfort

8.3

Crew

8.7

Overall

8.4

Entertainment

8.2

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 Washington, D.C.. 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.?

    For as low as $503, United Airlines can have you in Washington, D.C. from Incheon Intl Airport in 30h 19m. The distance between Incheon Intl Airport and Washington, D.C. is about 6938 mi.

  • What are the cheapest airlines flying from Incheon Intl Airport to Washington, D.C. round-trip?

    According to our current data, American Airlines ($590), United Airlines ($676), and Air Canada ($688) offers the cheapest pricing from Incheon Intl Airport to Washington, D.C.. American Airlines is priced at 46% lower than the current average price of a flight leaving 3 months from now.

  • 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.

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

    While on average a flight from Incheon Intl Airport to Washington, D.C. is generally $1,425, our data shows the cheapest flight currently is $983. When looking at the most popular route, (Incheon Intl - Washington, D.C. Dulles Intl), you can expect to pay $490 for that flight.

  • 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 $292). Flying from Incheon Intl Airport to Washington, D.C. 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.?

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

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$590Average$964FlexibilityNo cancel feeOn-time71%
DeltaCheapest$649Average$1,516FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$676Average$825FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$688Average$980FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,184Average$1,404FlexibilityNo cancel feeOn-time81%

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