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Washington, D.C.

$448+ Cheap flights from Seoul (SEL) 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 8/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — WAS
Apr 18 — Apr 251
Sat 4/18
Sat 4/25
1 adult, Economy
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Cheap flight deals from Seoul to Washington, D.C.

Cheapest flights from Seoul to Washington, D.C.
Explore the most affordable flight options available from Seoul to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 19, 2026.

This Delta deal was found by Cheapflights users on 3/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/287:00 pm
ICN
-
BWI
2 stops24h 00m
Delta
Tue 5/57:15 am
BWI
-
ICN
2 stops20h 35m
Delta
Deal found 3/14$619
This Delta deal was found by Cheapflights users on 3/15. 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.
Tue 11/38:05 pm
ICN
-
BWI
2 stops23h 55m
Delta
Tue 11/176:19 am
BWI
-
ICN
1 stop19h 31m
Delta
Deal found 3/15$668
This YBTour deal was found by Cheapflights users on 3/16. 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 YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/307:35 pm
ICN
-
IAD
1 stop17h 34m
Alaska Airlines
Thu 5/77:10 am
IAD
-
ICN
1 stop21h 20m
Alaska Airlines
Deal found 3/16$669
This Delta deal was found by Cheapflights users on 3/17. 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.
Mon 9/77:20 pm
ICN
-
BWI
1 stop23h 43m
Delta
Sun 10/256:19 am
BWI
-
ICN
1 stop20h 31m
Delta
Deal found 3/17$670
This Delta deal was found by Cheapflights users on 3/18. 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.
Tue 6/27:20 pm
ICN
-
BWI
1 stop23h 25m
Delta
Sun 7/266:19 am
BWI
-
ICN
1 stop22h 01m
Delta
Deal found 3/18$671
This Delta deal was found by Cheapflights users on 3/18. 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.
Tue 6/27:20 pm
ICN
-
BWI
1 stop23h 25m
Delta
Sat 7/256:10 pm
BWI
-
ICN
1 stop31h 00m
Delta
Deal found 3/18$684
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Thu 4/304:50 pm
ICN
-
BWI
1 stop27h 30m
United Airlines
Mon 5/46:20 pm
BWI
-
ICN
1 stop21h 00m
United Airlines
Deal found 3/15$694
This United Airlines deal was found by Cheapflights users on 3/15. 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.
Tue 4/214:50 pm
ICN
-
IAD
2 stops31h 41m
United Airlines
Sat 4/258:12 pm
IAD
-
ICN
2 stops29h 48m
United Airlines
Deal found 3/15$694
This United Airlines deal was found by Cheapflights users on 3/15. 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 4/224:50 pm
ICN
-
DCA
1 stop18h 38m
United Airlines
Sat 4/251:00 pm
DCA
-
ICN
2 stops37h 00m
United Airlines
Deal found 3/15$694
This Tourvis deal was found by Cheapflights users on 3/15. 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 Tourvis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/267:35 pm
ICN
-
IAD
1 stop17h 34m
Alaska Airlines
Wed 4/297:20 pm
IAD
-
ICN
1 stop33h 10m
Alaska Airlines
Deal found 3/15$701
This Expedia deal was found by Cheapflights users on 3/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:35 pm
ICN
-
IAD
1 stop23h 15m
Alaska Airlines
Wed 9/26:30 am
IAD
-
ICN
1 stop22h 00m
Alaska Airlines
Deal found 3/15$710
This Delta deal was found by Cheapflights users on 3/16. 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.
Mon 9/77:20 pm
ICN
-
BWI
1 stop23h 43m
Delta
Fri 9/186:19 am
BWI
-
ICN
1 stop22h 01m
Delta
Deal found 3/16$718

Find flight deals from Seoul to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) 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 March 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$619
(Delta)

One-way from

$448
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$1,202

Good round-trip deal

$956 or less

Good one-way deal

$634 or less
Provider with most accurate pricing for Seoul (SEL)-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Washington, D.C. (WAS) flights.
Search Deals
From Seoul (SEL) to Washington, D.C. (WAS)
Search Deals
One-way flight from Seoul (SEL) to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($291 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($82 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from Seoul (SEL) to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seoul 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 March 19, 2026.
Use the filters below to find and compare flights from Seoul to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Wed 4/15

9:30 am-7:16 pm

1 stop22h 46m

Baltimore/Washington

Wed 4/22

7:15 am-3:20 pm

1 stop19h 05m

$848

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Thu 4/23

7:40 pm-11:26 pm

1 stop16h 46m

Baltimore/Washington

Sun 4/26

6:00 am-4:00 am

1 stop33h 00m

$848

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Wed 4/15

12:25 pm-8:17 pm

2 stops20h 52m

Baltimore/Washington

Thu 7/9

7:00 am-3:55 pm

1 stop19h 55m

$852

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Fri 5/1

4:50 pm-10:30 pm

1 stop18h 40m

Washington, D.C. Reagan-National

Wed 9/2

12:40 pm-4:20 am

2 stops26h 40m

$921

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Fri 5/1

4:50 pm-9:02 pm

2 stops41h 12m

Baltimore/Washington

Mon 5/4

7:05 pm-3:00 pm

3 stops30h 55m

$937

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Wed 4/22

11:30 am-10:48 pm

2 stops24h 18m

Washington, D.C. Reagan-National

Sat 4/25

1:00 pm-4:20 am

2 stops26h 20m

$955

IncheonWashington, D.C.

ICN - IAD

ICNIAD

Incheon Intl

Mon 5/11

7:35 pm-12:09 am

1 stop17h 34m

Washington, D.C. Dulles Intl

Thu 5/28

6:00 am-5:30 pm

1 stop22h 30m

$956

IncheonBaltimore

ICN - BWI

ICNBWI

Incheon Intl

Wed 4/15

4:50 pm-9:39 am

2 stops29h 49m

Baltimore/Washington

Wed 4/22

6:05 am-3:00 pm

1 stop19h 55m

$972

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Wed 4/22

7:35 pm-4:28 pm

1 stop33h 53m

Washington, D.C. Reagan-National

Tue 4/28

5:00 pm-5:30 pm

1 stop35h 30m

$985

IncheonWashington, D.C.

ICN - DCA

ICNDCA

Incheon Intl

Wed 4/15

9:05 pm-10:19 am

1 stop26h 14m

Washington, D.C. Reagan-National

Wed 4/22

5:00 pm-6:05 am

1 stop24h 05m

$1,005

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/15

Showing 1-10 of 60 resultsSorted by cheapest first
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Compare providers for flights from Seoul to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seoul to Washington, D.C. in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seoul-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 Seoul-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seoul-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seoul-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 Seoul-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 Seoul to Washington, D.C.

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

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

Currently, October is the cheapest month in which you can book a flight from Seoul to Washington, D.C. (average of $389). Flying from Seoul to Washington, D.C. in July is currently the most expensive (average of $917). 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 SEL to WAS?

Find hourly flight availability from Seoul 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 March 19, 2026.

When flying from Seoul to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Seoul to Washington, D.C.

Explore weekly flight availability from Seoul 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 March 19, 2026.

The most flights from SEL 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).

The best insider tips for Seoul 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 Seoul 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 March 19, 2026.
See what other customers who have flown with Korean Air,Asiana Airlines, andDelta from Seoul to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,205 reviews

Boarding

8.5

Entertainment

8.2

Crew

8.7

Food

8.1

Overall

8.4

Comfort

8.3

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
1,205 reviews
Korean Air
8.4
Very good
1,205 reviews

Boarding

8.5

Entertainment

8.2

Crew

8.7

Food

8.1

Overall

8.4

Comfort

8.3

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
506 reviews
Korean Air
8.4
Very good
1,205 reviews

Boarding

8.5

Entertainment

8.2

Crew

8.7

Food

8.1

Overall

8.4

Comfort

8.3

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
8,296 reviews
Korean Air
8.4
Very good
1,205 reviews

Boarding

8.5

Entertainment

8.2

Crew

8.7

Food

8.1

Overall

8.4

Comfort

8.3

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
9,441 reviews
Korean Air
8.4
Very good
1,205 reviews

Boarding

8.5

Entertainment

8.2

Crew

8.7

Food

8.1

Overall

8.4

Comfort

8.3

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
10,815 reviews
Korean Air
8.4
Very good
1,205 reviews

Boarding

8.5

Entertainment

8.2

Crew

8.7

Food

8.1

Overall

8.4

Comfort

8.3

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 Seoul 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 Seoul to Washington, D.C.?

    For as low as $669, Delta can have you in Washington, D.C. from Seoul in 17h 34m. The distance between Seoul and Washington, D.C. is about 6939 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $501, American Airlines will fly you from Seoul to Washington, D.C. and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and AIR PREMIA - these airlines can fly you to your destination from $508 and $876, respectively. American Airlines is currently priced 49% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $460. However, be on the lookout for offers from American Airlines and AIR PREMIA, as they are both options that can get you from Seoul to Washington, D.C. for a low price.

  • What are the most popular routes from Seoul to Washington, D.C.?

    When deciding which route to take from Seoul to Washington, D.C. consider Incheon Intl - Washington, D.C. Dulles Intl, Incheon Intl - Washington, D.C. Reagan-National or Incheon Intl - Baltimore/Washington as they are the most popular.

  • What are the cheapest flights from Seoul to Washington, D.C.?

    On average you can expect to pay $870 for a flight from Seoul to Washington, D.C.. The cheapest flight overall is $551 while the most popular route, (Incheon Intl - Washington, D.C. Dulles Intl) is currently priced at $764.

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

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

  • How can I find direct flights from Seoul 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 Seoul to Washington, D.C..

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

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

    Currently, October is the cheapest month in which you can book a flight from Seoul to Washington, D.C. (average of $389). Flying from Seoul to Washington, D.C. in July is currently the most expensive (average of $917). 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
Owings Mills
Arlington
Springfield
Silver Spring
Herndon
Hyattsville
Hanover
Laurel
Rockville
Upper Marlboro
Fredericksburg
Largo
Bowie
Clinton
Towson
College Park
Cordova

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seoul to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Busan to Dulles Intl flights

Top 5 airlines flying from Seoul to Washington, D.C.

Discover the top 5 airlines that operate flights from Seoul 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 March 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$501Average$783FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$508Average$917FlexibilityNo cancel feeOn-time69%
DeltaCheapest$649Average$1,533FlexibilityNo cancel feeOn-timeN/A
AIR PREMIACheapest$876Average$1,109FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,095Average$1,442FlexibilityNo cancel feeOn-time81%

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