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$297+ Cheap flights from Washington to South Korea

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheap flight deals from Washington to South Korea

Keep the following information in mind while searching for Washington to South Korea flight deals. Data was last updated November 3, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$753
(Kiwi.com)

One-way from

$297
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$969

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.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Seoul (SEL) flights.
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From Washington to South Korea
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One-way flight from Washington to South Korea
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Highest demand for flights based on searches. 17% potential increase in price ($228 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from Washington to South Korea.
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Price to beat on a one-way flight from Washington to South Korea.
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Find flight deals from Washington to South Korea

Cheapest flights from Washington to South Korea
Explore the most affordable flight options available from Washington to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/2911:26 amSEA - ICN
1 stop17h 09mMultiple Airlines
Tue 12/99:20 pmICN - SEA
1 stop16h 18mMultiple Airlines
Deal found 11/2$752
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/1712:10 amSEA - ICN
Nonstop12h 10mMultiple Airlines
Sat 11/229:20 pmICN - SEA
2 stops30h 02mMultiple Airlines
Deal found 11/2$753
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 11/2911:26 amSEA - ICN
1 stop17h 09mMultiple Airlines
Sun 12/219:20 pmICN - SEA
1 stop14h 30mMultiple Airlines
Deal found 10/31$754
This Mytrip deal was found by Cheapflights users on 10/31. 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 11/2710:05 amSEA - ICN
2 stops41h 55mMultiple Airlines
Sun 12/79:20 pmICN - SEA
1 stop14h 56mMultiple Airlines
Deal found 10/31$755
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 12/211:24 amSEA - ICN
1 stop17h 11mMultiple Airlines
Tue 12/99:20 pmICN - SEA
1 stop16h 18mMultiple Airlines
Deal found 11/1$756
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/2511:26 amSEA - ICN
1 stop17h 09mMultiple Airlines
Tue 12/169:20 pmICN - SEA
1 stop16h 18mMultiple Airlines
Deal found 11/2$757
This Trip.com deal was found by Cheapflights users on 10/31. 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.
Tue 11/47:10 amSEA - ICN
1 stop17h 30mMultiple Airlines
Tue 11/259:20 pmICN - SEA
1 stop16h 18mMultiple Airlines
Deal found 10/31$758
This KAYAK deal was found by Cheapflights users on 11/2. 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 11/2710:05 amSEA - ICN
2 stops41h 55mHainan Airlines
Wed 12/310:10 pmICN - SEA
2 stops26h 55mHainan Airlines
Deal found 11/2$759
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 12/211:24 amSEA - ICN
1 stop17h 11mMultiple Airlines
Thu 12/119:20 pmICN - SEA
1 stop16h 18mMultiple Airlines
Deal found 11/1$761
This Air Canada deal was found by Cheapflights users on 11/2. 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.
Tue 11/185:50 amSEA - ICN
1 stop18h 20mAir Canada
Mon 12/16:55 pmICN - SEA
1 stop20h 11mAir Canada
Deal found 11/2$762
This Kiwi.com deal was found by Cheapflights users on 11/1. 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 12/211:24 amSEA - ICN
1 stop17h 11mMultiple Airlines
Sun 12/79:20 pmICN - SEA
1 stop16h 18mMultiple Airlines
Deal found 11/1$763
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/2911:26 amSEA - ICN
1 stop17h 09mMultiple Airlines
Sat 12/69:20 pmICN - SEA
1 stop16h 18mMultiple Airlines
Deal found 11/2$764

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to South Korea 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 3, 2025.
Use the filters below to find and compare flights from Washington to South Korea that are best for you.

Fly from

Washington

Fly to

South Korea

Route

Depart

Return

Price

PortlandIncheon

PDX - ICN

PDXICN

Portland

Tue 1/20

5:35 pm-6:35 pm

1 stop32h 00m

Incheon Intl

Thu 2/5

8:35 pm-5:59 pm

1 stop14h 24m

$821

PascoIncheon

PSC - ICN

PSCICN

Pasco Tri Cities

Thu 3/12

9:00 am-6:35 pm

1 stop17h 35m

Incheon Intl

Thu 3/19

8:35 pm-12:02 am

1 stop19h 27m

$827

SpokaneIncheon

GEG - ICN

GEGICN

Spokane

Tue 3/17

3:25 pm-6:35 pm

1 stop35h 10m

Incheon Intl

Thu 4/2

8:35 pm-12:13 am

1 stop19h 38m

$833

SpokaneIncheon

GEG - ICN

GEGICN

Spokane

Sun 1/18

9:05 am-6:35 pm

1 stop16h 30m

Incheon Intl

Thu 2/26

8:35 pm-4:54 pm

1 stop13h 19m

$839

SpokaneIncheon

GEG - ICN

GEGICN

Spokane

Fri 1/16

10:05 am-6:35 pm

1 stop15h 30m

Incheon Intl

Sat 2/28

8:35 pm-4:54 pm

1 stop13h 19m

$850

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 12/2

5:50 am-2:45 pm

2 stops39h 55m

Seoul Gimpo Intl

Wed 12/10

8:50 am-7:16 pm

2 stops27h 26m

$864

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 3/4

11:30 am-4:30 pm

Nonstop12h 00m

Incheon Intl

Wed 4/1

7:20 pm-2:00 pm

Nonstop10h 40m

$869

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 3/7

11:00 am-3:55 pm

Nonstop11h 55m

Incheon Intl

Sat 3/14

4:10 pm-10:00 am

Nonstop9h 50m

$869

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 2/28

11:25 am-4:30 pm

Nonstop12h 05m

Incheon Intl

Thu 4/2

7:20 pm-2:00 pm

Nonstop10h 40m

$869

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 2/14

11:00 am-3:55 pm

Nonstop11h 55m

Incheon Intl

Sat 2/21

4:10 pm-9:00 am

Nonstop9h 50m

$869

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

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

Have a flexible travel schedule? Discover the best time to fly to South Korea 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 South Korea

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

Currently, August is the cheapest month in which you can book a flight from State of Washington to South Korea (average of $207). Flying from State of Washington to South Korea in July is currently the most expensive (average of $886). 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 KR?

Find hourly flight availability from Washington to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

It’s optimal to fly from State of Washington to South Korea in the afternoon. By choosing this option you can save up to 44% 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 South Korea?

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

Travelers seeking maximum savings on their State of Washington to South Korea flight should consider departing on Sunday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from State of Washington to South Korea

Explore weekly flight availability from Washington to South Korea. 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 3, 2025.

The most flights from USWA to KR0 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 South Korea. 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 South Korea flight route?

    The Washington to South Korea flight path was viewed by 200 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Alaska Airlines, Delta, and United Airlines can get you from State of Washington to South Korea in just under 12h. Your travel time can differ by up to 11h 55m. State of Washington and South Korea are separated by a distance of 5200 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airlines for a one-way flight from State of Washington to South Korea are Alaska Airlines ($430), Delta ($443), and Japan Airlines ($477).

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

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

  • How can I find direct flights from Washington to South Korea?

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

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

    Yes. Cheapflights offers flight deals from Washington to South Korea 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 South Korea?

    Currently, August is the cheapest month in which you can book a flight from State of Washington to South Korea (average of $207). Flying from State of Washington to South Korea in July is currently the most expensive (average of $886). 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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Top 10 airlines flying from Washington to South Korea

Discover the top 10 airlines that operate flights from Washington to South Korea. 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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$167Average$1,418FlexibilityNo 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%
China AirlinesCheapest$835Average$1,023FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$850Average$1,447FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$1,007Average$1,217FlexibilityNo cancel feeOn-time77%

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