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$396+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SEL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Seoul are usually found in January or March, booked 18 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

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 June 12, 2025.

Round-trip from

$868
(Kiwi.com)

One-way from

$396
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,850

Good round-trip deal

$1,046 or less

Good one-way deal

$624 or less
From Washington, D.C. (WAS) to Seoul (SEL)
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One-way flight from Washington, D.C. (WAS) to Seoul (SEL)
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Highest demand for flights based on searches. 20% potential increase in price ($344 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Seoul (SEL).
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Seoul (SEL).
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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 June 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/11. 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.
Wed 9/35:45 amBWI - ICN
2 stops50h 50mMultiple Airlines
Sat 9/1312:45 pmICN - BWI
1 stop21h 17mMultiple Airlines
Deal found 6/11$868
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Fri 10/318:30 amBWI - ICN
1 stop31h 10mUnited Airlines
Tue 11/1812:45 pmICN - BWI
2 stops23h 56mUnited Airlines
Deal found 6/11$1,166
This Japan Airlines deal was found by Cheapflights users on 6/10. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/246:00 amBWI - GMP
2 stops39h 45mJapan Airlines
Sat 9/137:55 amGMP - BWI
2 stops22h 56mJapan Airlines
Deal found 6/10$1,171
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/105:40 amBWI - ICN
2 stops24h 05mWestJet
Fri 9/198:45 pmICN - BWI
2 stops27h 22mWestJet
Deal found 6/11$1,182
This Delta deal was found by Cheapflights users on 6/10. 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.
Sat 8/236:25 pmBWI - ICN
1 stop30h 45mDelta
Sun 12/217:25 pmICN - BWI
1 stop19h 15mDelta
Deal found 6/10$1,185
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/146:38 amBWI - ICN
1 stop19h 52mAmerican Airlines
Tue 10/286:50 pmICN - BWI
1 stop30h 14mAmerican Airlines
Deal found 6/12$1,187
This Trip.com deal was found by Cheapflights users on 6/10. 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.
Mon 9/19:40 pmIAD - ICN
1 stop22h 00mMultiple Airlines
Sun 9/2112:35 amICN - IAD
2 stops32h 30mMultiple Airlines
Deal found 6/10$1,265
This oojo deal was found by Cheapflights users on 6/10. 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.
Mon 9/16:30 amDCA - ICN
2 stops42h 35mCathay Pacific
Mon 9/2210:10 amICN - DCA
2 stops34h 48mCathay Pacific
Deal found 6/10$1,295
This Justfly.com deal was found by Cheapflights users on 6/10. 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.
Tue 10/141:30 pmIAD - ICN
1 stop39h 10mTurkish Airlines
Mon 10/2712:10 amICN - IAD
1 stop25h 00mTurkish Airlines
Deal found 6/10$1,307
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Thu 7/1012:55 pmDCA - ICN
3 stops38h 10mMultiple Airlines
Tue 7/229:05 pmICN - DCA
2 stops27h 58mMultiple Airlines
Deal found 6/10$1,312
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/14:35 pmDCA - ICN
1 stop34h 40mAir Canada
Thu 10/165:45 pmICN - DCA
2 stops29h 35mAir Canada
Deal found 6/12$1,314
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Sun 10/51:00 pmIAD - ICN
2 stops38h 05mAir Canada
Wed 10/156:00 pmICN - IAD
1 stop30h 13mAir Canada
Deal found 6/12$1,314

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 June 12, 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

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 9/3

5:45 am-9:35 pm

2 stops50h 50m

Incheon Intl

Sat 9/13

12:45 pm-9:02 pm

1 stop21h 17m

$868

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Fri 10/31

8:30 am-3:15 pm

1 stop41h 45m

Incheon Intl

Tue 11/18

12:45 pm-5:28 pm

1 stop18h 43m

$1,166

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Sun 8/24

6:00 am-10:45 am

2 stops39h 45m

Seoul Gimpo Intl

Sat 9/13

7:55 am-5:51 pm

2 stops22h 56m

$1,171

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Wed 9/10

5:40 am-6:45 pm

2 stops24h 05m

Incheon Intl

Fri 9/19

8:45 pm-11:07 am

2 stops27h 22m

$1,182

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Sat 8/23

6:25 pm-2:10 pm

1 stop30h 45m

Incheon Intl

Sun 12/21

7:25 pm-12:40 am

1 stop19h 15m

$1,185

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Tue 10/14

6:38 am-3:30 pm

1 stop19h 52m

Incheon Intl

Tue 10/28

6:50 pm-12:04 pm

1 stop30h 14m

$1,187

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Mon 9/1

9:40 pm-8:40 am

1 stop22h 00m

Incheon Intl

Sun 9/21

12:35 am-8:05 pm

2 stops32h 30m

$1,265

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Mon 9/1

6:30 am-2:05 pm

2 stops42h 35m

Incheon Intl

Mon 9/22

10:10 am-7:58 am

2 stops34h 48m

$1,295

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Thu 7/10

12:55 pm-4:05 pm

3 stops38h 10m

Incheon Intl

Tue 7/22

9:05 pm-12:03 pm

2 stops27h 58m

$1,312

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Wed 10/1

4:35 pm-4:15 pm

1 stop34h 40m

Incheon Intl

Thu 10/16

5:45 pm-10:20 am

2 stops29h 35m

$1,314

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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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 afternoon departures, expect crowded check-in areas at IAD. Arrive early to navigate the busy terminals efficiently.

Read more about IADby Ramsey Qubein
ICN

Use the AREX express train for a quick 40-50 minute trip from ICN to Seoul Station. It's a convenient and fast option.

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 June 9, 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 18 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 $1,000). Flying from Washington, D.C. to Seoul in December is currently the most expensive (average of $1,635). 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 June 12, 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 33% 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. Thursday afternoons 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 June 12, 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 June 12, 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.
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Japan Airlines
8.3
Very good
1,489 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
ANA
8.3
Very good
882 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Boarding

8.4

Entertainment

8.0

Overall

8.4

Comfort

8.3

Crew

8.6

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

Related info for your journey

Find useful and relevant information for your journey from 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?

    United Airlines, at $1,166, was found to be the cheapest airline from Washington, D.C. to Seoul.Alternate airlines to your destination round-trip include Japan Airlines and WestJet. United Airlines is currently priced 14% 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 $592 on Turkish Airlines. Other airlines that offer cheap prices include Air Canada from $605 and WestJet from $634 one-way.

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

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

  • 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 $1,000). Flying from Washington, D.C. to Seoul in December is currently the most expensive (average of $1,635). 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

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

Top 8 airlines flying from Washington, D.C. to Seoul

Discover the top 8 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$367Average$1,824FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$591Average$747FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$759Average$1,597FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$809Average$1,040FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$865Average$1,268FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$876Average$1,286FlexibilityNo cancel feeOn-time71%
DeltaCheapest$877Average$1,821FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,074Average$1,792FlexibilityNo cancel feeOn-time81%

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