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$374+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$720
(Air Canada)

One-way from

$374
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,334

Good round-trip deal

$739 or less

Good one-way deal

$379 or less
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. 12% potential increase in price ($165 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This Air Canada deal was found by Cheapflights users on 7/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/157:40 pmPDX - ICN
1 stop28h 25mMultiple Airlines
Wed 10/159:45 amICN - PDX
2 stops25h 01mMultiple Airlines
Deal found 7/29$720
This Hawaiian Airlines deal was found by Cheapflights users on 7/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/217:40 amPDX - ICN
1 stop19h 20mHawaiian Airlines
Fri 8/299:25 pmICN - PDX
1 stop17h 15mHawaiian Airlines
Deal found 7/30$781
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/47:40 amPDX - ICN
1 stop19h 20mAlaska Airlines
Wed 9/109:25 pmICN - PDX
1 stop24h 35mAlaska Airlines
Deal found 7/30$786
This FlightHub deal was found by Cheapflights users on 7/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/162:15 pmSEA - ICN
Nonstop11h 40mAsiana Airlines
Mon 12/19:00 pmICN - SEA
Nonstop9h 55mAsiana Airlines
Deal found 7/31$822
This Air Canada deal was found by Cheapflights users on 7/30. 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 9/2510:00 amSEA - ICN
1 stop14h 05mMultiple Airlines
Wed 10/2210:35 amICN - SEA
2 stops19h 41mMultiple Airlines
Deal found 7/30$824
This oojo deal was found by Cheapflights users on 7/30. 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.
Thu 9/2512:50 pmSEA - ICN
Nonstop11h 50mKorean Air
Wed 10/224:40 pmICN - SEA
Nonstop10h 00mKorean Air
Deal found 7/30$825
This Air Canada deal was found by Cheapflights users on 7/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/205:30 amSEA - ICN
1 stop18h 35mAir Canada
Wed 9/245:45 pmICN - SEA
1 stop12h 31mAir Canada
Deal found 7/31$835
This Delta deal was found by Cheapflights users on 7/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1812:35 pmSEA - ICN
Nonstop11h 55mDelta
Wed 11/128:05 pmICN - SEA
Nonstop10h 15mDelta
Deal found 7/31$842
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/182:50 pmSEA - ICN
Nonstop11h 45mAlaska Airlines
Sun 11/29:25 pmICN - SEA
1 stop17h 07mAlaska Airlines
Deal found 7/29$852
This American Airlines deal was found by Cheapflights users on 7/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/112:29 pmGEG - ICN
1 stop35h 01mAmerican Airlines
Sun 9/145:25 pmICN - GEG
1 stop21h 12mAmerican Airlines
Deal found 7/31$853
This United Airlines deal was found by Cheapflights users on 7/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/11:45 pmPDX - ICN
1 stop22h 35mUnited Airlines
Mon 9/294:50 pmICN - PDX
1 stop13h 52mUnited Airlines
Deal found 7/31$861
This Hawaiian Airlines deal was found by Cheapflights users on 7/31. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/161:45 pmSEA - ICN
Nonstop11h 50mHawaiian Airlines
Sun 11/308:35 pmICN - SEA
Nonstop10h 10mHawaiian Airlines
Deal found 7/31$863

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 July 31, 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

Mon 9/15

7:40 pm-4:05 pm

1 stop28h 25m

Incheon Intl

Wed 10/15

9:45 am-6:46 pm

2 stops25h 01m

$720

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 8/21

7:40 am-7:00 pm

1 stop19h 20m

Incheon Intl

Fri 8/29

9:25 pm-10:40 pm

1 stop17h 15m

$781

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 9/4

7:40 am-7:00 pm

1 stop19h 20m

Incheon Intl

Wed 9/10

9:25 pm-6:00 am

1 stop24h 35m

$786

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 9/16

2:15 pm-5:55 pm

Nonstop11h 40m

Incheon Intl

Tue 12/9

9:00 pm-1:55 pm

Nonstop9h 55m

$822

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 9/25

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

Wed 10/22

10:35 am-2:16 pm

2 stops19h 41m

$824

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 9/25

12:50 pm-4:40 pm

Nonstop11h 50m

Incheon Intl

Wed 10/22

4:40 pm-10:40 am

Nonstop10h 00m

$825

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 9/20

7:15 pm-4:05 pm

1 stop28h 50m

Incheon Intl

Wed 10/8

5:45 pm-2:16 pm

1 stop12h 31m

$835

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 9/18

12:35 pm-4:30 pm

Nonstop11h 55m

Incheon Intl

Mon 11/3

8:05 pm-1:20 pm

Nonstop10h 15m

$842

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 9/18

2:50 pm-6:35 pm

Nonstop11h 45m

Incheon Intl

Wed 10/29

9:25 pm-6:25 am

1 stop25h 00m

$852

SpokaneIncheon

GEG - ICN

GEGICN

Spokane

Mon 9/1

12:29 pm-3:30 pm

1 stop35h 01m

Incheon Intl

Sun 9/14

5:25 pm-10:37 pm

1 stop21h 12m

$853

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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, February is the cheapest month in which you can book a flight from State of Washington to South Korea (average of $998). Flying from State of Washington to South Korea 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 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 July 31, 2025.

When flying from State of Washington to South Korea, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 July 31, 2025.

The most flights from USWA to KR0 are scheduled on a Wednesday (8 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Reviews of airlines servicing South Korea

Get insights into the airlines that provide service to South Korea. 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 South Korea. Reviews last updated July 31, 2025.
Peruse reviews from past customers who have flown with EVA Air, Korean Air, and ANA from Washington to South Korea to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,220 reviews

Crew

8.6

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Entertainment

8.0

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
1,220 reviews
EVA Air
8.4
Very good
1,220 reviews

Crew

8.6

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Entertainment

8.0

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
Korean Air
8.4
Very good
1,121 reviews
EVA Air
8.4
Very good
1,220 reviews

Crew

8.6

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Entertainment

8.0

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
922 reviews
EVA Air
8.4
Very good
1,220 reviews

Crew

8.6

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Entertainment

8.0

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
1,536 reviews
EVA Air
8.4
Very good
1,220 reviews

Crew

8.6

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Entertainment

8.0

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
754 reviews
EVA Air
8.4
Very good
1,220 reviews

Crew

8.6

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Entertainment

8.0

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 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.

  • 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 WestJet ($374), Hawaiian Airlines ($409), and Asiana Airlines ($410).

  • 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, February is the cheapest month in which you can book a flight from State of Washington to South Korea (average of $998). Flying from State of Washington to South Korea 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

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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$167Average$1,292FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$182Average$1,099FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$282Average$865FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$763Average$1,550FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$812Average$907FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$835Average$1,029FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$901Average$1,153FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$954Average$1,467FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$978Average$1,090FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$1,007Average$1,217FlexibilityNo cancel feeOn-time77%

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