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$350+ Cheap flights from Washington 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SEL
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from Washington to Seoul

Cheapest flights from Washington to Seoul
Explore the most affordable flight options available from Washington to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This FlightHub deal was found by Cheapflights users on 11/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/218:00 pmSEA - ICN
1 stop28h 10mAir Canada
Tue 12/26:55 pmICN - SEA
1 stop17h 21mAir Canada
Deal found 11/11$600
This KAYAK deal was found by Cheapflights users on 11/11. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:05 amSEA - ICN
2 stops41h 55mHainan Airlines
Wed 11/1910:10 pmICN - SEA
2 stops26h 55mHainan Airlines
Deal found 11/11$679
This Kiwi.com deal was found by Cheapflights users on 11/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/75:50 pmSEA - ICN
2 stops49h 00mMultiple Airlines
Wed 12/176:55 pmICN - SEA
1 stop14h 41mMultiple Airlines
Deal found 11/12$698
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Tue 12/98:40 amSEA - ICN
2 stops34h 50mMultiple Airlines
Tue 12/169:20 pmICN - SEA
1 stop16h 18mMultiple Airlines
Deal found 11/11$700
This Priceline deal was found by Cheapflights users on 11/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:05 amSEA - ICN
2 stops41h 55mMultiple Airlines
Fri 12/55:55 pmICN - SEA
1 stop13h 36mMultiple Airlines
Deal found 11/13$706
This Priceline deal was found by Cheapflights users on 11/11. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:05 amSEA - ICN
2 stops41h 55mMultiple Airlines
Mon 12/16:55 pmICN - SEA
1 stop17h 21mMultiple Airlines
Deal found 11/11$708
This Gotogate deal was found by Cheapflights users on 11/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:05 amSEA - ICN
2 stops41h 55mMultiple Airlines
Tue 11/256:55 pmICN - SEA
1 stop12h 36mMultiple Airlines
Deal found 11/12$715
This Priceline deal was found by Cheapflights users on 11/13. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2710:05 amSEA - ICN
2 stops41h 55mMultiple Airlines
Mon 12/16:55 pmICN - SEA
1 stop20h 11mMultiple Airlines
Deal found 11/13$726
This Booking.com deal was found by Cheapflights users on 11/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:05 amSEA - ICN
1 stop14h 05mAir Canada
Thu 12/186:55 pmICN - SEA
1 stop17h 21mAir Canada
Deal found 11/12$732
This Gotogate deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:05 amSEA - ICN
2 stops41h 55mMultiple Airlines
Thu 11/276:55 pmICN - SEA
1 stop12h 36mMultiple Airlines
Deal found 11/13$738
This FlightHub deal was found by Cheapflights users on 11/12. 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.
Tue 12/210:05 amSEA - ICN
2 stops19h 20mMultiple Airlines
Wed 12/105:55 pmICN - SEA
1 stop18h 21mMultiple Airlines
Deal found 11/12$744
This United Airlines deal was found by Cheapflights users on 11/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/161:00 pmPDX - ICN
1 stop34h 15mUnited Airlines
Tue 11/187:25 pmICN - PDX
2 stops46h 01mUnited Airlines
Deal found 11/12$777

Cheap flight deals from Washington to Seoul

Keep the following information in mind while searching for Washington to Seoul flight deals. Data was last updated November 13, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$698
(Kiwi.com)

One-way from

$350
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$884

Good round-trip deal

$681 or less

Good one-way deal

$379 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Seoul (SEL) flights.
Search Deals
From Washington to Seoul (SEL)
Search Deals
One-way flight from Washington to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($233 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Washington to Seoul (SEL).
Search Deals
Price to beat on a one-way flight from Washington to Seoul (SEL).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 November 13, 2025.
Use the filters below to find and compare flights from Washington to Seoul that are best for you.

Fly from

Washington

Fly to

Seoul

Route

Depart

Return

Price

PortlandIncheon

PDX - ICN

PDXICN

Portland

Tue 4/21

9:45 pm-6:35 pm

1 stop28h 50m

Incheon Intl

Sat 5/23

8:35 pm-10:45 pm

1 stop18h 10m

$858

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 1/11

3:39 pm-10:05 pm

2 stops37h 26m

Seoul Gimpo Intl

Tue 2/3

8:00 am-8:58 am

2 stops41h 58m

$861

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 3/16

12:35 pm-4:30 pm

Nonstop11h 55m

Incheon Intl

Mon 3/23

8:05 pm-2:20 pm

Nonstop10h 15m

$869

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 2/14

11:00 am-3:55 pm

Nonstop11h 55m

Incheon Intl

Fri 2/20

4:10 pm-9:00 am

Nonstop9h 50m

$869

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 12/7

12:10 pm-10:05 pm

1 stop16h 55m

Seoul Gimpo Intl

Wed 12/17

8:00 am-9:02 am

2 stops42h 02m

$869

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 4/5

12:50 pm-4:40 pm

Nonstop11h 50m

Incheon Intl

Wed 4/15

4:40 pm-10:40 am

Nonstop10h 00m

$869

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 4/29

12:50 pm-4:40 pm

Nonstop11h 50m

Incheon Intl

Tue 5/12

4:40 pm-10:40 am

Nonstop10h 00m

$869

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 1/11

11:25 am-4:30 pm

Nonstop12h 05m

Incheon Intl

Sat 1/31

8:05 pm-1:20 pm

Nonstop10h 15m

$869

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 3/15

12:35 pm-4:30 pm

Nonstop11h 55m

Incheon Intl

Fri 4/17

7:20 pm-2:00 pm

Nonstop10h 40m

$869

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 2/2

11:00 am-3:55 pm

Nonstop11h 55m

Incheon Intl

Fri 2/13

4:10 pm-9:00 am

Nonstop9h 50m

$869

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Washington 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 to Seoul

What is the cheapest month to book a flight from State of Washington to Seoul?

Currently, August is the cheapest month in which you can book a flight from State of Washington to Seoul (average of $206). Flying from State of Washington to Seoul in July is currently the most expensive (average of $887). 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 WA to SEL?

Find hourly flight availability from Washington 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 November 13, 2025.

It’s optimal to fly from State of Washington to Seoul in the afternoon. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from State of Washington to Seoul?

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

Travelers seeking maximum savings on their State of Washington to Seoul flight should consider departing on Wednesday 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 State of Washington to Seoul

Explore weekly flight availability from Washington 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 November 13, 2025.

The most flights from USWA to SEL are scheduled on a Wednesday (10 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (6 on average).

Related info for your journey

Find useful and relevant information for your journey from Washington to Seoul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this State of Washington to Seoul flight route?

    Flights from Washington to Seoul have been viewed 200 times in the past calendar month.

  • How long is the flight from State of Washington to Seoul?

    There are many flights that can get you from State of Washington to Seoul in 11h 55m. Fly via Alaska Airlines, Japan Airlines, or Delta to get the fastest option. There are 5200 mi between State of Washington and Seoul. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from State of Washington to Seoul one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $383. However, be on the lookout for offers from Delta and American Airlines, as they are both options that can get you from State of Washington to Seoul for a low price.

  • What are the most popular routes from State of Washington to Seoul?

    When deciding which route to take from State of Washington to Seoul consider Seattle/Tacoma Intl - Incheon Intl, Seattle/Tacoma Intl - Seoul Gimpo Intl or Portland - Incheon Intl as they are the most popular.

  • What are the most reliable airlines from State of Washington to Seoul?

    Consider Delta (66%), Korean Air (57%) or Hawaiian Airlines (39%) when booking your flight. These represent the most reliable airlines when flying from State of Washington to Seoul.

  • What are the cheapest flights from State of Washington to Seoul?

    While on average a flight from State of Washington to Seoul is generally $1,668, our data shows the cheapest flight currently is $349. When looking at the most popular route, (Seattle/Tacoma Intl - Incheon Intl), you can expect to pay $698 for that flight.

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

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

  • How can I find direct flights from Washington to Seoul?

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

  • Can I find deals for business class flights from Washington to Seoul?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Seoul?

    Currently, August is the cheapest month in which you can book a flight from State of Washington to Seoul (average of $206). Flying from State of Washington to Seoul in July is currently the most expensive (average of $887). 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.

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Alternative routes for Washington to Seoul

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Seoul

Discover the top 10 airlines that operate flights from Washington 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$167Average$1,165FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$190Average$949FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$282Average$660FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$282Average$884FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$709Average$974FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$802Average$1,080FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$850Average$1,537FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$886Average$1,066FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$1,007Average$1,217FlexibilityNo cancel feeOn-time77%

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