HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$358+ 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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
abr 16 — abr 231
qui 4/16
qui 4/23
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

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 março 17, 2026.

This Air Canada deal was found by Cheapflights users on 3/15. 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.
ter 11/106:55 pm
ICN
-
SEA
1 stop16h 31m
Air Canada
seg 11/167:05 pm
SEA
-
ICN
1 stop29h 05m
Air Canada
Deal found 3/15$562
This Air Canada deal was found by Cheapflights users on 3/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 6/65:45 pm
ICN
-
SEA
1 stop20h 58m
Air Canada
sex 6/125:40 am
SEA
-
ICN
1 stop18h 25m
Air Canada
Deal found 3/12$581
This Hanatour deal was found by Cheapflights users on 3/12. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 4/215:45 pm
ICN
-
SEA
1 stop17h 38m
Air Canada
qui 4/233:45 pm
SEA
-
ICN
1 stop32h 20m
Air Canada
Deal found 3/12$592
This American Airlines deal was found by Cheapflights users on 3/16. 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.
qui 4/235:50 pm
ICN
-
SEA
1 stop19h 36m
Multiple Airlines
seg 4/275:51 pm
SEA
-
ICN
1 stop29h 54m
Multiple Airlines
Deal found 3/16$601
This Air Canada deal was found by Cheapflights users on 3/16. 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.
dom 4/265:45 pm
ICN
-
SEA
1 stop17h 35m
Air Canada
qui 4/308:00 pm
SEA
-
ICN
1 stop28h 05m
Air Canada
Deal found 3/16$608
This Air Canada deal was found by Cheapflights users on 3/13. 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.
ter 6/95:45 pm
ICN
-
SEA
1 stop16h 45m
Air Canada
qua 6/107:20 pm
SEA
-
ICN
1 stop28h 45m
Air Canada
Deal found 3/13$611
This BusinessClass deal was found by Cheapflights users on 3/12. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 9/265:45 pm
ICN
-
SEA
1 stop16h 47m
Asiana Airlines
qua 12/305:45 am
SEA
-
ICN
1 stop18h 25m
Asiana Airlines
Deal found 3/12$613
This Air Canada deal was found by Cheapflights users on 3/15. 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.
qua 10/75:45 pm
ICN
-
SEA
1 stop12h 37m
Air Canada
qua 10/145:40 am
SEA
-
ICN
1 stop18h 25m
Air Canada
Deal found 3/15$614
This Air Canada deal was found by Cheapflights users on 3/15. 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.
qui 6/45:45 pm
ICN
-
SEA
1 stop12h 35m
Air Canada
sex 6/125:40 am
SEA
-
ICN
1 stop18h 25m
Air Canada
Deal found 3/15$619
This American Airlines deal was found by Cheapflights users on 3/16. 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.
qua 4/155:50 pm
ICN
-
SEA
2 stops32h 24m
American Airlines
seg 4/2711:55 pm
SEA
-
ICN
1 stop23h 50m
American Airlines
Deal found 3/16$623
This Air Canada deal was found by Cheapflights users on 3/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb 9/265:45 pm
ICN
-
SEA
1 stop16h 47m
Air Canada
ter 12/297:05 pm
SEA
-
ICN
1 stop29h 05m
Air Canada
Deal found 3/12$624
This Gotogate deal was found by Cheapflights users on 3/13. 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.
seg 4/274:30 pm
PUS
-
SEA
1 stop34h 10m
Korean Air
seg 5/412:50 pm
SEA
-
PUS
1 stop15h 55m
Korean Air
Deal found 3/13$840

Find 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 março 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$581
(Air Canada)

One-way from

$358
(Expedia)

Popular in

August

Cheapest in

November

Average price

$731

Good round-trip deal

$699 or less

Good one-way deal

$595 or less
Provider with most accurate pricing for Seoul (SEL)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Seattle/Tacoma Intl flights.
Search Deals
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. 11% potential increase in price ($84 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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

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 março 17, 2026.
Use the filters below to find and compare flights from South Korea to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

qui 4/23

7:00 pm-1:07 pm

Nonstop10h 07m

Seattle/Tacoma Intl

dom 4/26

7:00 am-5:20 pm

1 stop18h 20m

$744

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

ter 4/28

7:00 pm-1:07 pm

Nonstop10h 07m

Seattle/Tacoma Intl

qua 4/29

9:20 pm-5:20 pm

1 stop28h 00m

$751

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

qui 5/7

4:00 pm-4:01 pm

1 stop16h 01m

Seattle/Tacoma Intl

qui 6/25

9:25 pm-5:20 pm

1 stop27h 55m

$809

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

sex 7/10

7:00 pm-1:41 pm

Nonstop10h 41m

Seattle/Tacoma Intl

sáb 7/18

7:20 am-4:40 am

1 stop29h 20m

$825

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

ter 7/14

7:00 pm-1:41 pm

Nonstop10h 41m

Seattle/Tacoma Intl

qua 10/14

7:59 pm-5:50 pm

1 stop29h 51m

$833

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

ter 7/7

7:00 pm-1:41 pm

Nonstop10h 41m

Seattle/Tacoma Intl

sex 7/17

9:25 pm-5:50 pm

1 stop28h 25m

$838

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

ter 7/14

8:05 pm-7:45 pm

1 stop15h 40m

Seattle/Tacoma Intl

ter 10/13

1:15 am-7:35 pm

1 stop26h 20m

$849

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

ter 4/21

11:30 am-7:45 pm

2 stops24h 15m

Seattle/Tacoma Intl

qui 4/23

4:32 pm-4:20 am

2 stops19h 48m

$859

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

sex 5/1

11:30 am-7:48 pm

2 stops24h 18m

Seattle/Tacoma Intl

dom 5/10

7:08 am-4:20 am

1 stop29h 12m

$859

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

ter 4/28

4:00 pm-10:20 pm

1 stop22h 20m

Seattle/Tacoma Intl

ter 5/5

9:20 pm-5:20 pm

1 stop28h 00m

$860

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/13

Showing 1-10 of 56 resultsSorted by cheapest first
1
2
3
...
6

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, November is the cheapest month in which you can book a flight from South Korea to Seattle (average of $338). Flying from South Korea to Seattle in August is currently the most expensive (average of $660). 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 março 17, 2026.

When flying from South Korea to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 14% versus a flight at noon.

What is the cheapest day to fly from South Korea to Seattle?

Use this chart to determine the cheapest time to fly round-trip from South Korea to Seattle. Price data was last updated on March 14, 2026.

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

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 março 17, 2026.

The most flights from KR0 to SEA are scheduled on a Friday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

How often are flights from South Korea to Seattle delayed?

About 28% of weekly flights between South Korea and Seattle have experienced delays in the past year, with the average delay time being 155 minutes.

What is the most punctual flight time for South Korea to Seattle flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Thursday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on South Korea to Seattle flights?

Over the last year, Delta have had the lowest number of delays on this route, with just 21% of flights being delayed.

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 março 17, 2026.
Read reviews from past customers who have flown Korean Air,Asiana Airlines, andAlaska Airlines from South Korea to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,202 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,202 reviews
Korean Air
8.4
Very good
1,202 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.1
Very good
507 reviews
Korean Air
8.4
Very good
1,202 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Alaska Airlines
7.9
Good
12,058 reviews
Korean Air
8.4
Very good
1,202 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Delta
7.9
Good
8,288 reviews
Korean Air
8.4
Very good
1,202 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Hawaiian Airlines
7.8
Good
2,839 reviews
Korean Air
8.4
Very good
1,202 reviews

Crew

8.7

Food

8.1

Entertainment

8.2

Overall

8.4

Boarding

8.5

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

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 long is the flight from South Korea to Seattle?

    Departing from South Korea to Seattle will take you 10h 07m. South Korea and Seattle are separated by a distance of 5200 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $79 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Southwest and Delta, with prices starting from $89 and $96, 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 Alaska Airlines (80%), Hawaiian Airlines (80%) or Delta (66%) 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 $1,561, our data indicates the cheapest price to be $416. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $699.

  • 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, November is the cheapest month in which you can book a flight from South Korea to Seattle (average of $338). Flying from South Korea to Seattle in August is currently the most expensive (average of $660). 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 Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Ocean Shores
Olympia
Kent
Lynnwood
Edmonds
Lacey
Renton
Puyallup
Kirkland
Ellensburg
Tukwila
Fife
Lakewood
Aberdeen
Shoreline
Marysville
Centralia
Federal Way

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.

Top 8 airlines flying from South Korea to Seattle

Discover the top 8 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 março 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$351Average$866FlexibilityNo cancel feeOn-time85%
Asiana AirlinesCheapest$466Average$628FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$470Average$726FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$472Average$517FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$476Average$583FlexibilityNo cancel feeOn-time75%
DeltaCheapest$485Average$714FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$516Average$646FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$583Average$638FlexibilityNo 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.
Site
©2026 Cheapflights