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$418+ 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — SEL
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 Saturday

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 30, 2025.

Round-trip from

$866
(Kiwi.com)

One-way from

$418
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,850

Good round-trip deal

$1,038 or less

Good one-way deal

$504 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. 19% potential increase in price ($331 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 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/29. 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.
Tue 8/195:45 amBWI - ICN
2 stops26h 50mMultiple Airlines
Wed 9/1710:05 pmICN - BWI
1 stop21h 51mMultiple Airlines
Deal found 6/29$866
This Delta deal was found by Cheapflights users on 6/30. 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 9/86:00 amBWI - ICN
1 stop21h 25mDelta
Mon 9/156:40 pmICN - BWI
1 stop18h 09mDelta
Deal found 6/30$1,079
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Sat 9/136:41 amBWI - ICN
1 stop19h 49mAmerican Airlines
Fri 9/265:25 pmICN - BWI
1 stop32h 17mAmerican Airlines
Deal found 6/28$1,086
This Gurufare deal was found by Cheapflights users on 6/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:00 amBWI - GMP
2 stops39h 45mJapan Airlines
Thu 11/137:50 amGMP - BWI
2 stops22h 39mJapan Airlines
Deal found 6/30$1,168
This Air Canada deal was found by Cheapflights users on 6/30. 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.
Thu 9/46:00 amDCA - ICN
2 stops22h 30mAir Canada
Thu 9/185:45 pmICN - DCA
2 stops28h 14mAir Canada
Deal found 6/30$1,176
This Mytrip deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/128:40 pmDCA - ICN
3 stops34h 00mMultiple Airlines
Wed 9/175:45 pmICN - DCA
2 stops29h 35mMultiple Airlines
Deal found 6/30$1,178
This CheapOair deal was found by Cheapflights users on 6/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/119:35 amIAD - ICN
1 stop17h 40mAir Canada
Wed 9/176:00 pmICN - IAD
2 stops28h 38mAir Canada
Deal found 6/30$1,180
This CheapOair deal was found by Cheapflights users on 6/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/55:31 pmIAD - ICN
2 stops33h 34mMultiple Airlines
Thu 8/2110:35 amICN - IAD
2 stops23h 26mMultiple Airlines
Deal found 6/28$1,182
This Turkish Airlines deal was found by Cheapflights users on 6/30. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/291:30 pmIAD - ICN
1 stop29h 35mTurkish Airlines
Fri 12/1210:45 amICN - IAD
1 stop39h 00mTurkish Airlines
Deal found 6/30$1,183
This oojo deal was found by Cheapflights users on 6/30. 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 10/1411:00 pmIAD - ICN
1 stop28h 35mAir China
Tue 10/2810:40 amICN - IAD
1 stop21h 50mAir China
Deal found 6/30$1,210
This American Airlines deal was found by Cheapflights users on 6/30. 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.
Fri 9/55:00 amDCA - ICN
1 stop21h 30mAmerican Airlines
Sun 9/145:25 pmICN - DCA
1 stop20h 30mAmerican Airlines
Deal found 6/30$1,217
This American Airlines deal was found by Cheapflights users on 6/28. 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.
Sat 9/136:25 amIAD - ICN
1 stop20h 05mAmerican Airlines
Fri 9/265:25 pmICN - IAD
1 stop18h 20mAmerican Airlines
Deal found 6/28$1,217

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 30, 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

Tue 8/19

5:45 am-9:35 pm

2 stops26h 50m

Incheon Intl

Wed 9/17

10:05 pm-6:56 am

1 stop21h 51m

$866

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Mon 9/8

6:00 am-4:25 pm

1 stop21h 25m

Incheon Intl

Mon 9/15

6:40 pm-11:49 pm

1 stop18h 09m

$1,079

BaltimoreIncheon

BWI - ICN

BWIICN

Baltimore/Washington

Sat 9/13

6:41 am-3:30 pm

1 stop19h 49m

Incheon Intl

Fri 9/26

5:25 pm-12:42 pm

1 stop32h 17m

$1,086

BaltimoreSeoul

BWI - GMP

BWIGMP

Baltimore/Washington

Tue 9/9

6:00 am-9:50 pm

2 stops26h 50m

Seoul Gimpo Intl

Tue 11/11

7:50 am-9:37 pm

2 stops27h 47m

$1,171

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Thu 9/4

6:00 am-5:30 pm

2 stops22h 30m

Incheon Intl

Thu 9/18

5:45 pm-8:59 am

2 stops28h 14m

$1,176

Washington, D.C.Incheon

DCA - ICN

DCAICN

Washington, D.C. Reagan-National

Fri 9/12

8:40 pm-7:40 pm

3 stops34h 00m

Incheon Intl

Wed 9/17

5:45 pm-10:20 am

2 stops29h 35m

$1,178

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Thu 9/11

9:35 am-4:15 pm

1 stop17h 40m

Incheon Intl

Wed 9/17

6:00 pm-9:38 am

2 stops28h 38m

$1,180

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Tue 7/29

3:40 pm-4:05 pm

2 stops35h 25m

Incheon Intl

Wed 8/6

2:05 pm-9:25 pm

2 stops20h 20m

$1,181

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Sat 9/13

1:30 pm-5:40 pm

1 stop39h 10m

Incheon Intl

Fri 9/19

10:20 am-11:45 am

1 stop38h 25m

$1,183

Washington, D.C.Incheon

IAD - ICN

IADICN

Washington, D.C. Dulles Intl

Fri 9/5

11:00 pm-11:35 am

1 stop23h 35m

Incheon Intl

Fri 9/12

1:05 pm-7:30 pm

1 stop19h 25m

$1,215

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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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 27, 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 $998). 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 30, 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. Friday 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 June 30, 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).

How much does it cost to fly round-trip from Washington, D.C. to Seoul?

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 30, 2025.
See what other customers who have flown with EVA Air, ANA, and Japan Airlines from Washington, D.C. to Seoul have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
1,210 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
8.4
Very good
892 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
1,504 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
745 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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
Delta
8.0
Very good
7,969 reviews
EVA Air
8.4
Very good
1,210 reviews

Food

8.1

Entertainment

8.0

Overall

8.4

Boarding

8.4

Crew

8.6

Comfort

8.3

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?

    Delta, at $1,079, was found to be the cheapest airline from Washington, D.C. to Seoul.Alternate airlines to your destination round-trip include American Airlines and Japan Airlines. Delta is currently priced 20% 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 $558 on WestJet. Other airlines that offer cheap prices include Air Canada from $599 and China Airlines from $636 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 Washington, D.C. Dulles Intl - Seoul Gimpo Intl as they are the most popular.

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

    Looking at all options, your cheapest flight can be booked for $440. While the most popular route (Washington, D.C. Dulles Intl - Incheon Intl) can be booked for $916 on average our data indicates $2,891 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 $998). 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

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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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$367Average$1,842FlexibilityNo cancel feeOn-time69%
Air ChinaCheapest$591Average$747FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$759Average$1,597FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$802Average$1,000FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$865Average$1,270FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$876Average$1,287FlexibilityNo cancel feeOn-time71%
DeltaCheapest$877Average$1,833FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$1,074Average$1,779FlexibilityNo cancel feeOn-time81%

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