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Washington, D.C.

$374+ 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — WAS
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheapflights Tip: The best prices from Incheon Intl to Washington, D.C. are usually found in October or December, booked 40 days in advance, depart on a Sunday or Tuesday and return on a Tuesday

Cheap 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 February 3, 2026.

This Gotogate deal was found by Cheapflights users on 2/1. 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 2/185:55 pm
ICN
-
IAD
2 stops40h 59m
Air Canada
Wed 2/254:30 pm
IAD
-
ICN
2 stops33h 30m
Air Canada
Deal found 2/1$637
This WhyPayMore deal was found by Cheapflights users on 1/31. 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 4/247:05 pm
ICN
-
IAD
1 stop29h 18m
Air Canada
Fri 7/179:55 am
IAD
-
ICN
1 stop18h 35m
Air Canada
Deal found 1/31$646
This Air Canada deal was found by Cheapflights users on 2/1. 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.
Fri 5/15:45 pm
ICN
-
IAD
2 stops35h 45m
Air Canada
Sat 5/910:07 pm
IAD
-
ICN
2 stops52h 58m
Air Canada
Deal found 2/1$650
This Travelocity deal was found by Cheapflights users on 2/1. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/85:45 pm
ICN
-
IAD
2 stops26h 59m
Air Canada
Mon 9/148:20 am
IAD
-
ICN
1 stop18h 45m
Air Canada
Deal found 2/1$659
This FlightHub deal was found by Cheapflights users on 2/1. 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.
Wed 5/135:45 pm
ICN
-
DCA
2 stops31h 16m
Air Canada
Thu 5/2112:45 pm
DCA
-
ICN
2 stops38h 20m
Air Canada
Deal found 2/1$659
This Air Canada deal was found by Cheapflights users on 2/1. 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 5/135:45 pm
ICN
-
IAD
2 stops27h 05m
Air Canada
Wed 6/179:45 am
IAD
-
ICN
2 stops41h 20m
Air Canada
Deal found 2/1$662
This Air Canada deal was found by Cheapflights users on 2/1. 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.
Tue 2/246:55 pm
ICN
-
IAD
2 stops30h 51m
Air Canada
Thu 3/510:09 pm
IAD
-
ICN
2 stops29h 01m
Air Canada
Deal found 2/1$667
This Air Canada deal was found by Cheapflights users on 2/1. 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.
Mon 4/135:45 pm
ICN
-
IAD
2 stops34h 54m
Air Canada
Thu 4/239:55 am
IAD
-
ICN
2 stops41h 10m
Air Canada
Deal found 2/1$671
This Gotogate deal was found by Cheapflights users on 2/1. 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.
Tue 4/77:05 pm
ICN
-
DCA
2 stops33h 25m
Air Canada
Tue 4/146:59 am
DCA
-
ICN
1 stop21h 31m
Air Canada
Deal found 2/1$672
This FlightHub deal was found by Cheapflights users on 2/1. 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.
Wed 5/65:45 pm
ICN
-
IAD
2 stops27h 05m
Air Canada
Mon 6/1510:05 pm
IAD
-
ICN
1 stop29h 20m
Air Canada
Deal found 2/1$673
This Air Canada deal was found by Cheapflights users on 2/1. 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.
Mon 5/115:45 pm
ICN
-
DCA
2 stops28h 08m
Air Canada
Wed 5/206:55 pm
DCA
-
ICN
2 stops32h 10m
Air Canada
Deal found 2/1$676
This Air Canada deal was found by Cheapflights users on 1/31. 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.
Fri 3/66:55 pm
ICN
-
IAD
2 stops40h 26m
Air Canada
Mon 3/99:00 am
IAD
-
ICN
1 stop19h 25m
Air Canada
Deal found 1/31$677

Find 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 February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$637
(Gotogate)

One-way from

$374
(Trip.com)

Popular in

July

Cheapest in

October

Average price

$1,086

Good round-trip deal

$1,207 or less

Good one-way deal

$801 or less
Provider with most accurate pricing for Incheon Intl-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Incheon Intl-Washington, D.C. (WAS) flights.
Search Deals
From Incheon Intl to Washington, D.C. (WAS)
Search Deals
One-way flight from Incheon Intl to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($211 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Incheon Intl to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Incheon Intl to Washington, D.C. (WAS).
Search Deals

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 February 3, 2026.
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 5/15

5:45 pm-12:01 pm

2 stops31h 16m

Washington, D.C. Reagan-National

Mon 6/1

12:45 pm-4:05 pm

2 stops38h 20m

$659

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Tue 5/12

5:45 pm-12:01 pm

2 stops31h 16m

Washington, D.C. Reagan-National

Mon 5/25

11:00 am-5:30 pm

1 stop17h 30m

$678

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Wed 5/13

5:45 pm-12:01 pm

2 stops31h 16m

Washington, D.C. Reagan-National

Sun 5/24

6:55 pm-5:30 pm

1 stop33h 35m

$678

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Fri 5/15

7:05 pm-10:28 pm

1 stop16h 23m

Washington, D.C. Reagan-National

Tue 5/19

11:00 am-5:30 pm

1 stop17h 30m

$696

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Sat 3/7

6:55 pm-5:05 pm

2 stops36h 10m

Washington, D.C. Reagan-National

Sun 5/10

12:45 pm-4:05 pm

2 stops38h 20m

$702

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Tue 3/3

6:55 pm-8:55 am

2 stops28h 00m

Washington, D.C. Reagan-National

Tue 3/10

12:55 pm-5:25 pm

2 stops39h 30m

$728

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Thu 2/19

7:15 pm-7:44 am

2 stops26h 29m

Washington, D.C. Reagan-National

Wed 3/4

6:30 am-4:45 pm

1 stop20h 15m

$806

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Tue 2/24

12:45 pm-5:20 pm

1 stop18h 35m

Baltimore/Washington

Thu 3/5

6:31 pm-5:40 am

1 stop21h 09m

$820

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Tue 3/3

6:00 pm-11:25 pm

2 stops19h 25m

Baltimore/Washington

Tue 3/10

6:31 pm-4:40 am

1 stop21h 09m

$821

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Fri 3/6

12:45 pm-7:19 am

1 stop32h 34m

Baltimore/Washington

Mon 3/9

5:04 pm-4:40 am

2 stops46h 36m

$821

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 57 results
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  • Most accurate provider: When it comes to deals on Incheon Intl Airport-Washington, D.C. 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. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Incheon Intl Airport-Washington, D.C. 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. 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. 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 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.

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

Currently, October is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. (average of $389). Flying from Incheon Intl Airport to Washington, D.C. in July is currently the most expensive (average of $954). 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 February 3, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Incheon Intl Airport to Washington, D.C. as you normally would.

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 February 3, 2026.

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 often are flights from Incheon to Washington, D.C. delayed?

About 16% of weekly flights between Incheon and Washington, D.C. have experienced delays in the past year, with the average delay time being 125 minutes.

What is the most punctual flight time for Incheon to Washington, D.C. flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Wednesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Incheon to Washington, D.C. flights?

Over the last year, Korean Air have had the lowest number of delays on this route, with just 16% of flights being delayed.

The best insider tips for Incheon Intl Airport to Washington, D.C. flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Incheon Intl Airport to Washington, D.C. trip
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on ICN

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

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

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 February 3, 2026.
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
1,188 reviews

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

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
1,188 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

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
8.1
Very good
502 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

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
7.9
Good
8,135 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

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
9,231 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

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
10,676 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Overall

8.4

Food

8.1

Crew

8.7

Comfort

8.3

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 $806, Air Canada can have you in Washington, D.C. from Incheon Intl Airport in 17h 44m. The distance between Incheon Intl Airport and Washington, D.C. is about 6938 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, American Airlines ($501), United Airlines ($512), and Air Canada ($727) offers the cheapest pricing from Incheon Intl Airport to Washington, D.C.. American Airlines is priced at 55% 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 American Airlines, which is currently one of the cheapest options available, starting at $440. United Airlines flights start at $457 while deals on Korean Air start at $776 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 - Baltimore/Washington and Incheon Intl - Washington, D.C. Reagan-National.

  • 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 $1,219, our data shows the cheapest flight currently is $636. When looking at the most popular route, (Incheon Intl - Washington, D.C. Dulles Intl), you can expect to pay $685 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, October is the cheapest month in which you can book a flight from Incheon Intl Airport to Washington, D.C. (average of $389). Flying from Incheon Intl Airport to Washington, D.C. in July is currently the most expensive (average of $954). 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
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Herndon
Fredericksburg
Hanover
Linthicum Heights
Rockville
Laurel
Towson
Upper Marlboro
Manassas
Largo
Bowie
McLean
Clinton

Browse thousands of different options on Cheapflights for your next trip

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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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$501Average$783FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$508Average$848FlexibilityNo cancel feeOn-time69%
DeltaCheapest$649Average$1,518FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$727Average$965FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$1,128Average$1,412FlexibilityNo cancel feeOn-time81%

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