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$341+ 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This FlightHub deal was found by Cheapflights users on 1/27. 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 4/219:50 am
PDX
-
ICN
1 stop14h 15m
Air Canada
Fri 5/15:45 pm
ICN
-
PDX
1 stop17h 20m
Air Canada
Deal found 1/27$582
This FlightHub deal was found by Cheapflights users on 1/27. 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 4/213:15 pm
PDX
-
ICN
2 stops29h 25m
Multiple Airlines
Fri 5/15:45 pm
ICN
-
PDX
1 stop17h 20m
Multiple Airlines
Deal found 1/27$599
This FlightHub deal was found by Cheapflights users on 1/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:50 am
PDX
-
ICN
1 stop14h 15m
Air Canada
Thu 4/305:45 pm
ICN
-
PDX
1 stop16h 45m
Air Canada
Deal found 1/28$603
This FlightHub deal was found by Cheapflights users on 1/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/139:50 am
PDX
-
ICN
2 stops19h 40m
Multiple Airlines
Thu 4/305:45 pm
ICN
-
PDX
1 stop16h 45m
Multiple Airlines
Deal found 1/28$609
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Sat 4/119:50 am
PDX
-
ICN
1 stop14h 15m
Air Canada
Sat 6/135:45 pm
ICN
-
PDX
1 stop13h 00m
Air Canada
Deal found 1/27$635
This CheapOair deal was found by Cheapflights users on 1/27. 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 3/307:05 pm
PDX
-
ICN
1 stop29h 00m
Multiple Airlines
Mon 6/18:40 pm
ICN
-
PDX
2 stops28h 50m
Multiple Airlines
Deal found 1/27$648
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Sat 4/113:15 pm
PDX
-
ICN
2 stops29h 25m
Multiple Airlines
Sat 6/135:45 pm
ICN
-
PDX
1 stop13h 00m
Multiple Airlines
Deal found 1/27$652
This Gotogate deal was found by Cheapflights users on 1/26. 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.
Sun 4/197:05 pm
PDX
-
ICN
1 stop29h 00m
Multiple Airlines
Fri 6/58:40 pm
ICN
-
PDX
2 stops28h 50m
Multiple Airlines
Deal found 1/26$666
This Mytrip deal was found by Cheapflights users on 1/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:45 pm
PDX
-
ICN
1 stop28h 20m
Multiple Airlines
Fri 5/88:40 pm
ICN
-
PDX
2 stops28h 50m
Multiple Airlines
Deal found 1/29$677
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Mon 3/309:50 am
PDX
-
ICN
1 stop14h 15m
Air Canada
Mon 6/15:45 pm
ICN
-
PDX
1 stop13h 00m
Air Canada
Deal found 1/27$692
This FlightHub deal was found by Cheapflights users on 1/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/87:05 pm
PDX
-
ICN
1 stop29h 00m
Air Canada
Wed 4/225:45 pm
ICN
-
PDX
1 stop12h 55m
Air Canada
Deal found 1/29$712
This CheapOair deal was found by Cheapflights users on 1/28. 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.
Thu 4/910:10 am
SEA
-
ICN
1 stop13h 55m
Multiple Airlines
Sun 4/268:40 pm
ICN
-
SEA
2 stops28h 53m
Multiple Airlines
Deal found 1/28$807

Find 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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$582
(FlightHub)

One-way from

$341
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$870

Good round-trip deal

$670 or less

Good one-way deal

$363 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 South Korea
Search Deals
One-way flight from Washington to South Korea
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($198 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Washington to South Korea.
Search Deals
Price to beat on a one-way flight from Washington to South Korea.
Search Deals

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 January 29, 2026.
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

Sun 4/19

7:05 pm-4:05 pm

1 stop29h 00m

Incheon Intl

Fri 6/5

5:45 pm-7:05 pm

1 stop17h 20m

$765

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 2/28

9:19 pm-6:35 pm

1 stop28h 16m

Incheon Intl

Sun 3/8

8:35 pm-6:05 pm

1 stop13h 30m

$822

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 2/28

9:19 pm-6:35 pm

1 stop28h 16m

Incheon Intl

Sat 3/7

8:35 pm-6:05 pm

1 stop14h 30m

$822

PortlandIncheon

PDX - ICN

PDXICN

Portland

Fri 3/6

7:57 pm-6:35 pm

1 stop29h 38m

Incheon Intl

Sun 3/15

8:35 pm-9:10 pm

1 stop16h 35m

$822

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 4/20

7:05 pm-4:05 pm

1 stop29h 00m

Incheon Intl

Mon 5/11

5:45 pm-2:45 pm

1 stop13h 00m

$842

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 3/8

8:30 am-6:35 pm

1 stop18h 05m

Incheon Intl

Mon 3/9

8:35 pm-11:44 pm

1 stop19h 09m

$864

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Mon 5/4

1:50 am-6:00 pm

1 stop24h 10m

Busan Gimhae

Thu 6/4

7:10 pm-7:00 pm

1 stop15h 50m

$867

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 3/1

6:00 am-6:35 pm

1 stop19h 35m

Incheon Intl

Sat 3/7

8:35 pm-10:47 am

2 stops31h 12m

$877

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 3/2

11:30 am-4:30 pm

Nonstop12h 00m

Incheon Intl

Mon 3/9

8:05 pm-2:20 pm

Nonstop10h 15m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 3/29

1:00 pm-4:50 pm

Nonstop11h 50m

Incheon Intl

Sun 5/3

7:00 pm-1:11 pm

Nonstop10h 11m

$885

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

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, April is the cheapest month in which you can book a flight from State of Washington to South Korea (average of $335). Flying from State of Washington to South Korea in February is currently the most expensive (average of $793). 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 January 29, 2026.

It’s optimal to fly from State of Washington to South Korea in the evening. By choosing this option you can save up to 21% on the cost of your flight, compared to a flight in the afternoon.

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 March 30, 2025.

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 January 29, 2026.

The most flights from USWA to KR0 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 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?

    Air Canada, EVA Air, and Delta can get you from State of Washington to South Korea in just under 12h. Your travel time can differ by up to 17h. 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 Hawaiian Airlines ($160), Alaska Airlines ($168), and Asiana Airlines ($406).

  • 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, April is the cheapest month in which you can book a flight from State of Washington to South Korea (average of $335). Flying from State of Washington to South Korea in February is currently the most expensive (average of $793). 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 9 airlines flying from Washington to South Korea

Discover the top 9 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$212Average$1,402FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$282Average$840FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$335Average$338FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$576Average$972FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$717Average$1,055FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$835Average$1,030FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$843Average$1,427FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$995Average$1,207FlexibilityNo cancel feeOn-time77%

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