Seoul

$453+ Cheap flights from Washington, D.C. (WAS) to Seoul (SEL)

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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SEL
Apr 29 — May 61
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Cheapflights Tip: The best prices from Washington, D.C. to Seoul are usually found in January or March, booked 26 days in advance, depart on a Wednesday or Tuesday and return on a Monday

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

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Seoul (SEL). 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 April 24, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$931
(Kiwi.com)

One-way from

$465
(Trip.com)

Popular in

June

Cheapest in

January

Average price

$1,233

Good round-trip deal

$1,253 or less

Good one-way deal

$657 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Seoul (SEL) flight deals.
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Seoul (SEL) flights.
From Washington, D.C. (WAS) to Seoul (SEL)
One-way flight from Washington, D.C. (WAS) to Seoul (SEL)
Highest demand for flights based on searches. 19% potential increase in price ($330 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($44 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Seoul (SEL).
Price to beat on a one-way flight from Washington, D.C. (WAS) to Seoul (SEL).

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

Cheapest flights from Washington, D.C. to Seoul
Explore the most affordable flight options available from Washington, D.C. to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

This Trip.com deal was found by Cheapflights users on 4/22. 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 8/296:45 pmIAD - ICN
1 stop35h 00mWestJet
Sun 9/149:40 pmICN - IAD
1 stop33h 10mWestJet
Deal found 4/22$897
This FlightHub deal was found by Cheapflights users on 4/23. 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 11/199:25 pmIAD - ICN
1 stop21h 40mTurkish Airlines
Wed 3/1812:10 amICN - IAD
1 stop25h 05mTurkish Airlines
Deal found 4/23$899
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/83:32 pmIAD - ICN
2 stops39h 58mMultiple Airlines
Wed 5/216:20 pmICN - IAD
1 stop24h 35mMultiple Airlines
Deal found 4/23$931
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/97:17 amBWI - ICN
2 stops48h 13mMultiple Airlines
Tue 5/1312:45 pmICN - BWI
1 stop19h 54mMultiple Airlines
Deal found 4/23$948
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/176:00 pmDCA - ICN
2 stops37h 30mMultiple Airlines
Fri 5/236:20 pmICN - DCA
1 stop36h 18mMultiple Airlines
Deal found 4/23$996
This SmartFares deal was found by Cheapflights users on 4/23. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:00 amBWI - ICN
2 stops47h 45mWestJet
Tue 9/168:45 pmICN - BWI
2 stops27h 22mWestJet
Deal found 4/23$1,035
This oojo deal was found by Cheapflights users on 4/23. 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.
Tue 8/267:30 pmDCA - ICN
2 stops29h 35mCathay Pacific
Tue 9/28:05 pmICN - DCA
2 stops37h 39mCathay Pacific
Deal found 4/23$1,077
This oojo deal was found by Cheapflights users on 4/22. 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.
Sat 4/265:13 pmIAD - ICN
2 stops30h 27mCathay Pacific
Sun 5/111:40 pmICN - IAD
2 stops63h 37mCathay Pacific
Deal found 4/22$1,135
This United Airlines deal was found by Cheapflights users on 4/23. 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 9/96:56 pmBWI - ICN
1 stop20h 24mUnited Airlines
Tue 9/2311:30 amICN - BWI
2 stops24h 15mUnited Airlines
Deal found 4/23$1,178
This Justfly.com deal was found by Cheapflights users on 4/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/45:31 pmIAD - ICN
1 stop33h 44mAir Canada
Thu 12/258:10 pmICN - IAD
1 stop27h 41mAir Canada
Deal found 4/23$1,194
This oojo deal was found by Cheapflights users on 4/23. 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.
Tue 8/267:33 pmBWI - ICN
2 stops36h 37mCathay Pacific
Tue 9/210:10 amICN - BWI
2 stops39h 19mCathay Pacific
Deal found 4/23$1,232
This FlightHub deal was found by Cheapflights users on 4/23. 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.
Tue 10/145:10 pmIAD - ICN
2 stops29h 05mChina Airlines
Mon 10/208:35 pmICN - IAD
2 stops52h 15mChina Airlines
Deal found 4/23$1,244

Cheapflights Fare Finder

Customize your flight search to find flights from Washington, D.C. to Seoul 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 April 24, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Seoul that are best for you.

Fly from

Washington, D.C.

Fly to

Seoul

Route

Depart

Return

Price

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 8/29

6:45 pm-6:45 pm

1 stop35h 00m

Incheon Intl

Sun 9/14

9:40 pm-5:50 pm

1 stop33h 10m

$897

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 8/27

1:30 pm-5:40 pm

1 stop39h 10m

Incheon Intl

Fri 9/5

10:20 am-11:45 am

1 stop38h 25m

$902

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 5/8

3:32 pm-8:30 pm

2 stops39h 58m

Incheon Intl

Wed 5/21

6:20 pm-5:55 am

1 stop24h 35m

$931

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Fri 5/9

7:17 am-8:30 pm

2 stops48h 13m

Incheon Intl

Tue 5/13

12:45 pm-7:39 pm

1 stop19h 54m

$948

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Sat 5/17

6:00 pm-8:30 pm

2 stops37h 30m

Incheon Intl

Fri 5/23

6:20 pm-5:38 pm

1 stop36h 18m

$996

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Sun 5/4

10:00 pm-12:40 pm

2 stops49h 40m

Incheon Intl

Sun 5/18

8:05 pm-7:07 pm

2 stops36h 02m

$1,100

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 10/15

10:25 am-5:30 pm

1 stop18h 05m

Incheon Intl

Mon 10/20

5:45 pm-11:16 am

2 stops30h 31m

$1,143

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Wed 5/7

5:38 pm-12:40 pm

2 stops30h 02m

Incheon Intl

Thu 7/10

10:10 am-10:59 am

2 stops37h 49m

$1,153

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Thu 6/5

5:40 am-6:45 pm

2 stops24h 05m

Incheon Intl

Thu 6/26

8:45 pm-10:52 am

2 stops27h 07m

$1,178

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 10/14

5:10 pm-11:15 am

2 stops29h 05m

Incheon Intl

Mon 10/20

8:35 pm-11:50 am

2 stops52h 15m

$1,244

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 58 results
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Compare providers for flights from Washington, D.C. to Seoul

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 Washington, D.C. to Seoul in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust 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 Washington, D.C.-Seoul flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Washington, D.C.-Seoul flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Seoul flights, Cheapflights users trust AranGrant the most. AranGrant 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 Washington, D.C.-Seoul flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for Washington, D.C. to Seoul 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 Washington, D.C. to Seoul trip
Airports
IAD

For a smooth departure from IAD, use the Aerotrain to navigate between terminals efficiently. Allow extra time for security during peak afternoon hours.

Read more about IADby Ramsey Qubein
ICN

The AREX express train is a fast option from ICN to Seoul Station, taking 40-50 minutes. Consider this over taxis for a quicker journey.

Read more about ICNby Gabriel Leigh
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 Washington, D.C. to Seoul

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

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Seoul. Price data was last updated on April 18, 2025.

To ensure you get the cheapest price possible for a flight from Washington, D.C. to Seoul, you should look to book at least 26 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Seoul (average of $1,001). Flying from Washington, D.C. to Seoul in June is currently the most expensive (average of $1,650). 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 WAS to SEL?

Find hourly flight availability from Washington, D.C. to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 24, 2025.

When flying from Washington, D.C. to Seoul, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 34% versus a flight at noon.

What is the cheapest day to fly from Washington, D.C. to Seoul?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Seoul. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Seoul flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

Explore weekly flight availability from Washington, D.C. to Seoul. 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 April 24, 2025.

The most flights from WAS to SEL 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 Seoul by month

Plan your trip to Seoul by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.

Temperature in Seoul by month

Plan your trip to Seoul by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 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 Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated April 24, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Seoul, such as EVA Air, Korean Air and Japan Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
8.3
Very good

Food

8.1

Crew

8.6

Comfort

8.3

Boarding

8.4

Entertainment

8.0

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

Related info for your journey

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

    Turkish Airlines, at $948, was found to be the cheapest airline from Washington, D.C. to Seoul.Alternate airlines to your destination round-trip include Cathay Pacific and WestJet. Turkish Airlines is currently priced 31% below the average price you’ll pay for this route.

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

    One-way options have recently been found by users for as low as $535 on Turkish Airlines. Other airlines that offer cheap prices include Cathay Pacific from $549 and Air Canada from $706 one-way.

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

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

    Looking at all options, your cheapest flight can be booked for $391. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $887 on average our data indicates $3,246 when flying from Washington, D.C. to Seoul.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to Seoul (average of $1,001). Flying from Washington, D.C. to Seoul in June is currently the most expensive (average of $1,650). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from Washington, D.C. to Seoul

Discover the top 10 airlines that operate flights from Washington, D.C. to Seoul. 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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air ChinaCheapest$591Average$747FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$660Average$1,747FlexibilityNo cancel feeOn-time69%
Turkish AirlinesCheapest$807Average$1,055FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$865Average$1,265FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$876Average$1,300FlexibilityNo cancel feeOn-time71%
DeltaCheapest$877Average$1,924FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,077Average$1,838FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$1,298Average$2,023FlexibilityNo cancel feeOn-time76%
KLMCheapest$1,686Average$1,788FlexibilityNo cancel feeOn-time75%
Air FranceCheapest$1,698Average$1,707FlexibilityNo cancel feeOn-time77%

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