HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$410+ Cheap flights from South Korea to Seattle (SEA)

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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from South Korea to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from South Korea to Seattle

Keep the following information in mind while searching for South Korea to Seattle flight deals. Data was last updated June 12, 2025.

Round-trip from

$518
(United Airlines)

One-way from

$458
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$678

Good round-trip deal

$645 or less

Good one-way deal

$604 or less
From South Korea to Seattle/Tacoma Intl
Search Deals
One-way flight from South Korea to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($240 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a round-trip flight from South Korea to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from South Korea to Seattle/Tacoma Intl.
Search Deals

Find flight deals from South Korea to Seattle

Cheapest flights from South Korea to Seattle
Explore the most affordable flight options available from South Korea to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/11. 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.
Fri 6/134:50 pmICN - SEA
1 stop24h 09mUnited Airlines
Sun 6/295:10 amSEA - ICN
1 stop31h 10mUnited Airlines
Deal found 6/11$509
This WhyPayMore deal was found by Cheapflights users on 6/12. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/198:35 pmICN - SEA
Nonstop10h 10mHawaiian Airlines
Sat 9/272:50 pmSEA - ICN
Nonstop11h 45mHawaiian Airlines
Deal found 6/12$547
This Gotogate deal was found by Cheapflights users on 6/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/115:45 pmICN - SEA
1 stop31h 36mAir Canada
Sun 9/281:45 pmSEA - ICN
1 stop34h 20mAir Canada
Deal found 6/10$558
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/126:20 pmICN - SEA
Nonstop10h 10mAsiana Airlines
Tue 3/1012:10 amSEA - ICN
Nonstop12h 10mAsiana Airlines
Deal found 6/12$571
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/28:35 pmICN - SEA
Nonstop10h 20mAlaska Airlines
Thu 11/68:05 amSEA - ICN
1 stop18h 20mAlaska Airlines
Deal found 6/10$588
This Gotogate deal was found by Cheapflights users on 6/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/244:10 pmICN - SEA
Nonstop9h 50mKorean Air
Mon 12/2911:00 amSEA - ICN
Nonstop11h 55mKorean Air
Deal found 6/12$590
This deal was found by Cheapflights users on 6/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/278:05 pmICN - SEA
Nonstop10h 15mDelta
Tue 11/411:15 amSEA - ICN
Nonstop12h 15mDelta
Deal found 6/12$600
This Gotogate deal was found by Cheapflights users on 6/11. 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.
Thu 6/269:10 amICN - SEA
2 stops21h 06mMultiple Airlines
Thu 7/37:15 pmSEA - ICN
1 stop28h 50mMultiple Airlines
Deal found 6/11$661
This Gotogate deal was found by Cheapflights users on 6/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/124:10 pmPUS - SEA
1 stop14h 45mMultiple Airlines
Tue 12/212:10 amSEA - PUS
1 stop15h 00mMultiple Airlines
Deal found 6/12$690
This Gotogate deal was found by Cheapflights users on 6/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:55 amPUS - SEA
1 stop18h 05mKorean Air
Wed 12/311:00 amSEA - PUS
1 stop35h 15mKorean Air
Deal found 6/12$698
This Gotogate deal was found by Cheapflights users on 6/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/87:40 amGMP - SEA
2 stops26h 56mANA
Tue 2/103:45 pmSEA - GMP
1 stop26h 35mANA
Deal found 6/12$824
This EVA Air deal was found by Cheapflights users on 6/11. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:50 pmGMP - SEA
1 stop21h 20mEVA Air
Wed 11/512:10 amSEA - GMP
1 stop19h 40mEVA Air
Deal found 6/11$864

Cheapflights Fare Finder

Customize your flight search to find flights from South Korea to Seattle 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 June 12, 2025.
Use the filters below to find and compare flights from South Korea to Seattle that are best for you.

Fly from

South Korea

Fly to

Seattle

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 8/27

11:30 am-10:59 pm

1 stop27h 29m

Seattle/Tacoma Intl

Sat 9/27

11:10 am-4:20 am

2 stops25h 10m

$518

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 9/19

8:35 pm-2:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Sat 9/27

2:50 pm-6:35 pm

Nonstop11h 45m

$547

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 9/11

5:45 pm-9:21 am

1 stop31h 36m

Seattle/Tacoma Intl

Sun 9/28

1:45 pm-4:05 pm

1 stop34h 20m

$558

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 9/12

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Tue 3/10

12:10 am-4:20 am

Nonstop12h 10m

$571

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 11/2

8:35 pm-1:55 pm

Nonstop10h 20m

Seattle/Tacoma Intl

Thu 11/6

8:05 am-7:25 pm

1 stop18h 20m

$588

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 10/27

8:05 pm-2:20 pm

Nonstop10h 15m

Seattle/Tacoma Intl

Tue 11/4

11:15 am-4:30 pm

Nonstop12h 15m

$600

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 7/7

4:40 pm-10:50 am

Nonstop10h 10m

Seattle/Tacoma Intl

Mon 7/21

1:20 pm-4:40 pm

Nonstop11h 20m

$604

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 6/26

9:10 am-2:16 pm

2 stops21h 06m

Seattle/Tacoma Intl

Thu 7/3

7:15 pm-4:05 pm

1 stop28h 50m

$661

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Wed 11/12

4:10 pm-1:55 pm

1 stop14h 45m

Seattle/Tacoma Intl

Tue 12/2

12:10 am-8:10 am

1 stop15h 00m

$690

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Wed 11/12

7:55 am-9:00 am

1 stop18h 05m

Seattle/Tacoma Intl

Wed 12/3

11:00 am-3:15 pm

1 stop35h 15m

$698

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 31 results
1
2
3
4

Best time to book a flight from South Korea to Seattle

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

What is the cheapest month to book a flight from South Korea to Seattle?

Currently, January is the cheapest month in which you can book a flight from South Korea to Seattle (average of $238). Flying from South Korea to Seattle in July is currently the most expensive (average of $391). 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 KR to SEA?

Find hourly flight availability from South Korea to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from South Korea to Seattle as you normally would.

Weekly flight availability from South Korea to Seattle

Explore weekly flight availability from South Korea to Seattle. 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 June 12, 2025.

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

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated June 12, 2025.
See what other customers who have flown with EVA Air, Korean Air and Japan Airlines from South Korea to Seattle have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

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
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

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
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

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
1,490 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

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
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

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
8.3
Very good
882 reviews
EVA Air
8.4
Very good
1,202 reviews

Food

8.1

Entertainment

8.0

Boarding

8.4

Overall

8.4

Comfort

8.3

Crew

8.6

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 South Korea to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from South Korea?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from South Korea to Seattle.

  • How popular is this South Korea to Seattle flight route?

    Within the past month, 1 users have taken a look at flights from South Korea to Seattle/Tacoma Intl.

  • What are the cheapest airlines to fly from South Korea to Seattle one-way?

    $510 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on EVA Air and WestJet, with prices starting from $541 and $546, respectively.

  • What are the most popular routes from South Korea to Seattle?

    The most popular flight routes from South Korea to Seattle are Incheon Intl - Seattle/Tacoma Intl, Seoul Gimpo Intl - Seattle/Tacoma Intl and Busan Gimhae - Seattle/Tacoma Intl.

  • What are the most reliable airlines from South Korea to Seattle?

    No one likes to see their flight delayed. When booking a flight from South Korea to Seattle consider choosing Thai Airways (67%), Asiana Airlines (67%) or United Airlines (67%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from South Korea to Seattle?

    Looking for the cheapest flight from South Korea to Seattle? While on average our users pay $1,568, our data indicates the cheapest price to be $471. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $509.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from South Korea to Seattle (average of $238). Flying from South Korea to Seattle in July is currently the most expensive (average of $391). 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

Traveling to a place near South Korea?

Book flights to South Korea if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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 South Korea to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Taiwan Taoyuan Intl to Seattle flights
Narita to Seattle flights
Haneda to Seattle flights
Incheon Intl to Seattle flights
New Delhi to Seattle flights
Singapore to Seattle flights
Mumbai to Seattle flights
Hongqiao Intl to Seattle flights
Hyderabad to Seattle flights
Pu Dong to Seattle flights
Chennai to Seattle flights
Suvarnabhumi to Seattle flights
Hong Kong to Seattle flights
Manila to Seattle flights
Bangalore to Seattle flights
Capital to Seattle flights
Angeles City to Seattle flights
Itami to Seattle flights
Soekarno-Hatta Intl to Seattle flights
Haneda to Portland flights
Taiwan Taoyuan Intl to Portland flights
Ho Chi Minh City to Seattle flights
Narita to Portland flights
Kansai Intl to Seattle flights
Beijing Daxing Intl to Seattle flights
Incheon Intl to Portland flights
Changsha to Seattle flights
Ahmedabad to Seattle flights
Hyderabad to Portland flights
Udaipur to Portland flights
Chubu Centrair Intl to Seattle flights
Xiamen to Seattle flights
Manila to Portland flights
Cochin to Seattle flights
Yerevan to Seattle flights
Hanoi to Seattle flights
Cebu City to Seattle flights
Chennai to Portland flights
Kathmandu to Seattle flights
Islamabad to Seattle flights
Bangalore to Portland flights
Coimbatore to Seattle flights
Chongqing to Seattle flights
Chiang Mai to Seattle flights
Phnom Penh to Seattle flights
Kuala Lumpur Intl to Seattle flights

Top 5 airlines flying from South Korea to Seattle

Discover the top 5 airlines that operate flights from South Korea to Seattle. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$474Average$752FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$515Average$913FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$516Average$681FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$549Average$838FlexibilityNo cancel feeOn-time76%
DeltaCheapest$646Average$1,003FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.