South Korea

$451+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
May 5 — May 121
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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 April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$956
(United Airlines)

One-way from

$455
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,107

Good round-trip deal

$790 or less

Good one-way deal

$498 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Seoul (SEL) flight deals.
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Seoul (SEL) flights.
From Washington to South Korea
One-way flight from Washington to South Korea
Highest demand for flights based on searches. 19% potential increase in price ($295 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Washington to South Korea.
Price to beat on a one-way flight from Washington to South Korea.

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 April 30, 2025.

This Air Canada deal was found by Cheapflights users on 4/29. 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.
Tue 9/96:15 amPDX - ICN
1 stop17h 50mMultiple Airlines
Wed 9/179:45 amICN - PDX
2 stops25h 01mMultiple Airlines
Deal found 4/29$774
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:15 amGEG - ICN
1 stop15h 45mUnited Airlines
Wed 10/224:50 pmICN - GEG
1 stop22h 25mUnited Airlines
Deal found 4/29$956
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/256:59 pmSEA - ICN
1 stop33h 31mMultiple Airlines
Mon 6/26:20 pmICN - SEA
1 stop16h 36mMultiple Airlines
Deal found 4/28$959
This FlightHub deal was found by Cheapflights users on 4/28. 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 9/221:10 amSEA - ICN
1 stop26h 25mChina Airlines
Tue 11/258:15 pmICN - SEA
1 stop15h 00mChina Airlines
Deal found 4/28$963
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:30 amSEA - ICN
1 stop18h 35mAir Canada
Sun 11/236:50 pmICN - SEA
1 stop20h 16mAir Canada
Deal found 4/28$971
This oojo deal was found by Cheapflights users on 4/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/112:30 amSEA - ICN
1 stop18h 30mEVA Air
Wed 10/17:45 pmICN - SEA
1 stop15h 45mEVA Air
Deal found 4/29$974
This oojo deal was found by Cheapflights users on 4/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/231:10 amSEA - PUS
1 stop18h 05mChina Airlines
Sat 11/157:45 pmPUS - SEA
1 stop15h 30mChina Airlines
Deal found 4/29$1,000
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/3011:35 pmSEA - ICN
1 stop27h 45mPhilippine Airlines
Thu 5/228:30 pmICN - SEA
1 stop38h 45mPhilippine Airlines
Deal found 4/28$1,017
This Air Canada deal was found by Cheapflights users on 4/29. 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 9/17:40 pmPDX - ICN
1 stop28h 25mAir Canada
Tue 9/165:45 pmICN - PDX
1 stop17h 01mAir Canada
Deal found 4/29$1,026
This FlightHub deal was found by Cheapflights users on 4/29. 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.
Tue 5/277:10 pmSEA - ICN
1 stop45h 30mTurkish Airlines
Tue 6/311:20 pmICN - SEA
1 stop33h 55mTurkish Airlines
Deal found 4/29$1,038
This oojo deal was found by Cheapflights users on 4/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/178:12 pmPDX - ICN
2 stops24h 28mCathay Pacific
Sun 8/311:40 pmICN - PDX
2 stops36h 07mCathay Pacific
Deal found 4/29$1,045
This oojo deal was found by Cheapflights users on 4/29. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/298:05 pmSEA - ICN
2 stops24h 35mCathay Pacific
Sun 9/143:10 pmICN - SEA
2 stops32h 57mCathay Pacific
Deal found 4/29$1,067

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 April 30, 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 9/9

6:15 am-4:05 pm

1 stop17h 50m

Incheon Intl

Wed 9/17

9:45 am-6:46 pm

2 stops25h 01m

$774

SpokaneIncheon

GEG - ICN

GEGICN

Spokane

Wed 10/15

7:15 am-3:00 pm

1 stop15h 45m

Incheon Intl

Wed 10/22

4:50 pm-11:15 pm

1 stop22h 25m

$956

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 5/25

6:59 pm-8:30 pm

1 stop33h 31m

Incheon Intl

Mon 6/2

6:20 pm-6:56 pm

1 stop16h 36m

$959

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 5/6

1:10 am-7:35 pm

1 stop26h 25m

Incheon Intl

Mon 6/2

12:35 pm-7:30 pm

1 stop22h 55m

$970

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 8/17

7:00 am-4:00 am

1 stop29h 00m

Incheon Intl

Wed 8/27

8:55 pm-8:35 pm

1 stop15h 40m

$996

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 9/1

7:40 pm-4:05 pm

1 stop28h 25m

Incheon Intl

Tue 9/16

5:45 pm-6:46 pm

1 stop17h 01m

$1,026

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 5/6

12:50 am-11:00 am

1 stop18h 10m

Incheon Intl

Mon 7/21

1:45 pm-7:10 pm

1 stop21h 25m

$1,030

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 5/27

7:10 pm-8:40 am

1 stop45h 30m

Incheon Intl

Tue 6/3

11:20 pm-5:15 pm

1 stop33h 55m

$1,038

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 5/7

11:35 pm-7:20 pm

1 stop27h 45m

Incheon Intl

Sun 5/11

8:00 am-7:15 pm

1 stop27h 15m

$1,043

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 8/17

8:12 pm-12:40 pm

2 stops24h 28m

Incheon Intl

Sun 8/31

1:40 pm-9:47 am

2 stops36h 07m

$1,045

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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, February is the cheapest month in which you can book a flight from State of Washington to South Korea (average of $1,001). 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 April 30, 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 April 30, 2025.

The most flights from USWA to KR0 are scheduled on a Monday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in South Korea by month

Plan your trip to South Korea by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in South Korea ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit South Korea when rainfall is around 0.8 in.

Temperature in South Korea by month

Plan your trip to South Korea by taking into account the average temperature totals by month.

If weather is an important factor for your trip to South Korea, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

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 April 30, 2025.
See what other customers who have flown with EVA Air, Korean Air and Japan Airlines from Washington to South Korea have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
8.3
Very good

Food

8.1

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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?

  • 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 China Eastern ($557), Air Canada ($574), and WestJet ($578).

  • 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 $1,001). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to South Korea

See prices for flight routes from nearby airports that may be better suited for you.

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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$167Average$1,355FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$600Average$1,182FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$657Average$1,379FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$824Average$948FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$862Average$968FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$915Average$1,229FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$966Average$1,564FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$970Average$1,246FlexibilityNo cancel feeOn-time77%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%

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