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$328+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SEL
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheap 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 February 13, 2026.

This Air Canada deal was found by Cheapflights users on 2/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/125:45 am
SEA
-
ICN
1 stop17h 15m
Multiple Airlines
Tue 2/179:50 am
ICN
-
SEA
2 stops26h 26m
Multiple Airlines
Deal found 2/10$636
This CheapOair deal was found by Cheapflights users on 2/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/309:50 am
PDX
-
ICN
1 stop14h 15m
Multiple Airlines
Mon 6/18:40 pm
ICN
-
PDX
2 stops28h 50m
Multiple Airlines
Deal found 2/13$636
This CheapOair deal was found by Cheapflights users on 2/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/263:40 pm
SEA
-
ICN
1 stop32h 25m
Multiple Airlines
Wed 5/68:40 pm
ICN
-
SEA
2 stops28h 35m
Multiple Airlines
Deal found 2/13$641
This CheapOair deal was found by Cheapflights users on 2/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/219:50 am
PDX
-
ICN
1 stop14h 15m
Multiple Airlines
Mon 9/218:40 pm
ICN
-
PDX
2 stops28h 51m
Multiple Airlines
Deal found 2/10$651
This Booking.com deal was found by Cheapflights users on 2/12. 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 3/185:40 am
SEA
-
ICN
1 stop18h 35m
Air Canada
Mon 3/235:55 pm
ICN
-
SEA
1 stop21h 02m
Air Canada
Deal found 2/12$667
This Booking.com deal was found by Cheapflights users on 2/12. 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.
Tue 4/78:00 pm
SEA
-
ICN
1 stop28h 05m
Air Canada
Tue 4/215:45 pm
ICN
-
SEA
1 stop21h 05m
Air Canada
Deal found 2/12$672
This Kiwi.com deal was found by Cheapflights users on 2/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1211:05 am
SEA
-
ICN
2 stops41h 30m
Hainan Airlines
Wed 3/259:40 pm
ICN
-
SEA
2 stops27h 25m
Hainan Airlines
Deal found 2/13$674
This CheapOair deal was found by Cheapflights users on 2/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/309:50 am
PDX
-
ICN
1 stop14h 15m
Multiple Airlines
Thu 5/288:40 pm
ICN
-
PDX
2 stops28h 50m
Multiple Airlines
Deal found 2/13$676
This Gurufare deal was found by Cheapflights users on 2/10. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:45 am
SEA
-
ICN
1 stop39h 20m
Cathay Pacific
Tue 4/288:00 am
ICN
-
SEA
1 stop18h 05m
Cathay Pacific
Deal found 2/10$680
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Mon 4/2011:45 am
SEA
-
ICN
1 stop18h 40m
Cathay Pacific
Mon 5/48:00 am
ICN
-
SEA
1 stop18h 05m
Cathay Pacific
Deal found 2/12$683
This CheapOair deal was found by Cheapflights users on 2/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:05 pm
PDX
-
ICN
1 stop29h 00m
Multiple Airlines
Sat 4/258:40 pm
ICN
-
PDX
2 stops37h 50m
Multiple Airlines
Deal found 2/12$683
This CheapOair deal was found by Cheapflights users on 2/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/229:50 am
PDX
-
ICN
1 stop14h 15m
Multiple Airlines
Fri 5/88:40 pm
ICN
-
PDX
2 stops28h 50m
Multiple Airlines
Deal found 2/13$686

Find flight deals from Washington to Seoul

Keep the following information in mind while searching for Washington to Seoul flight deals. Data was last updated February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$636
(CheapOair)

One-way from

$328
(Gurufare)

Popular in

July

Cheapest in

November

Average price

$870

Good round-trip deal

$675 or less

Good one-way deal

$358 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. 13% potential increase in price ($151 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 13, 2026.
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

Mon 4/6

12:07 pm-6:35 pm

1 stop14h 28m

Incheon Intl

Mon 4/20

8:35 pm-6:40 pm

1 stop14h 05m

$787

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 4/12

3:42 pm-6:35 pm

1 stop34h 53m

Incheon Intl

Mon 4/20

8:35 pm-6:40 pm

1 stop14h 05m

$792

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 4/20

9:50 am-4:05 pm

1 stop14h 15m

Incheon Intl

Mon 5/11

5:45 pm-7:05 pm

1 stop17h 20m

$811

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 5/10

8:41 am-2:05 pm

2 stops61h 24m

Incheon Intl

Wed 6/3

1:55 am-10:20 am

1 stop24h 25m

$814

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 4/14

6:25 am-12:40 pm

2 stops38h 15m

Incheon Intl

Sun 5/3

8:05 pm-10:05 am

1 stop30h 00m

$819

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 4/23

7:40 am-12:25 am

2 stops24h 45m

Incheon Intl

Sun 5/3

1:40 pm-10:05 am

1 stop36h 25m

$819

SpokaneIncheon

GEG - ICN

GEGICN

Spokane

Thu 3/12

8:10 am-6:35 pm

1 stop18h 25m

Incheon Intl

Fri 3/13

8:35 pm-11:59 pm

1 stop19h 24m

$828

PortlandIncheon

PDX - ICN

PDXICN

Portland

Tue 4/7

7:05 pm-1:45 pm

2 stops26h 40m

Incheon Intl

Tue 4/21

5:45 pm-6:30 pm

1 stop16h 45m

$831

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 4/15

6:59 pm-12:25 am

2 stops37h 26m

Incheon Intl

Tue 4/21

1:55 am-10:05 am

1 stop24h 10m

$832

SpokaneIncheon

GEG - ICN

GEGICN

Spokane

Wed 3/11

5:57 pm-6:35 pm

1 stop32h 38m

Incheon Intl

Sun 3/15

8:35 pm-11:59 pm

1 stop19h 24m

$833

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/13

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, April is the cheapest month in which you can book a flight from State of Washington to Seoul (average of $335). Flying from State of Washington to Seoul in December is currently the most expensive (average of $766). 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 February 13, 2026.

It’s optimal to fly from State of Washington to Seoul in the evening. By choosing this option you can save up to 49% on the cost of your flight, compared to a flight in the afternoon.

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 February 13, 2026.

The most flights from USWA to SEL are scheduled on a Thursday (10 on average). You will have fewer flight options on Wednesday, 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 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 50m. Fly via Air Canada, Cathay Pacific, or Alaska Airlines 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 Hawaiian Airlines, with whom users have recently found tickets for as low as $160. However, be on the lookout for offers from Alaska Airlines and Asiana 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 Thai Airways (83%), Asiana Airlines (83%) or United Airlines (83%) 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 $1,235, our data shows the cheapest flight currently is $307. When looking at the most popular route, (Seattle/Tacoma Intl - Incheon Intl), you can expect to pay $680 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, April is the cheapest month in which you can book a flight from State of Washington to Seoul (average of $335). Flying from State of Washington to Seoul in December is currently the most expensive (average of $766). 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

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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 February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$212Average$1,136FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$660FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$282Average$840FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$335Average$338FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$531Average$949FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$710Average$990FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$843Average$1,503FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$869Average$1,132FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$995Average$1,207FlexibilityNo cancel feeOn-time77%

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