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$428+ 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 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Jul 19 — Jul 261
Sun 7/19
Sun 7/26
1 adult, Economy
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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 June 19, 2026.

This Mytrip deal was found by Cheapflights users on 6/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1910:30 pm
ICN
-
SEA
3 stops31h 52m
Multiple Airlines
Sun 8/307:35 pm
SEA
-
ICN
1 stop31h 10m
Multiple Airlines
Deal found 6/16$865
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Thu 6/257:35 pm
ICN
-
SEA
Nonstop10h 30m
Multiple Airlines
Sat 8/1510:30 am
SEA
-
ICN
1 stop16h 15m
Multiple Airlines
Deal found 6/14$879
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Mon 6/227:35 pm
ICN
-
SEA
Nonstop10h 30m
Multiple Airlines
Thu 8/1310:30 am
SEA
-
ICN
1 stop16h 15m
Multiple Airlines
Deal found 6/14$912
This Kiwi.com deal was found by Cheapflights users on 6/14. 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.
Mon 6/227:35 pm
ICN
-
SEA
Nonstop10h 30m
Multiple Airlines
Sun 8/97:00 am
SEA
-
ICN
1 stop19h 45m
Multiple Airlines
Deal found 6/14$915
This WhyPayMore deal was found by Cheapflights users on 6/14. 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.
Tue 10/69:20 pm
ICN
-
SEA
Nonstop9h 55m
Asiana Airlines
Mon 10/1212:10 am
SEA
-
ICN
Nonstop12h 20m
Asiana Airlines
Deal found 6/14$921
This WhyPayMore deal was found by Cheapflights users on 6/16. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:20 pm
ICN
-
SEA
Nonstop9h 55m
Asiana Airlines
Sun 9/2012:10 am
SEA
-
ICN
Nonstop12h 20m
Asiana Airlines
Deal found 6/16$925
This flugladen.de deal was found by Cheapflights users on 6/18. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/229:20 pm
ICN
-
SEA
Nonstop9h 55m
Asiana Airlines
Mon 7/612:10 am
SEA
-
ICN
Nonstop11h 50m
Asiana Airlines
Deal found 6/18$929
This Gotogate deal was found by Cheapflights users on 6/19. 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.
Sat 6/207:35 pm
ICN
-
SEA
Nonstop10h 30m
Multiple Airlines
Sun 8/3010:30 am
SEA
-
ICN
1 stop16h 15m
Multiple Airlines
Deal found 6/19$931
This Gotogate deal was found by Cheapflights users on 6/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/78:10 am
GMP
-
SEA
2 stops26h 22m
Multiple Airlines
Fri 7/1710:45 am
SEA
-
GMP
2 stops19h 40m
Multiple Airlines
Deal found 6/15$1,072
This YBTour deal was found by Cheapflights users on 6/16. 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 YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/193:00 pm
GMP
-
SEA
2 stops19h 32m
Multiple Airlines
Mon 7/2710:45 am
SEA
-
GMP
2 stops19h 40m
Multiple Airlines
Deal found 6/16$1,087
This YBTour deal was found by Cheapflights users on 6/17. 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 YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/163:00 pm
GMP
-
SEA
2 stops19h 32m
Multiple Airlines
Mon 9/2110:30 am
SEA
-
GMP
2 stops19h 55m
Multiple Airlines
Deal found 6/17$1,120
This Booking.com deal was found by Cheapflights users on 6/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/244:20 pm
PUS
-
SEA
1 stop34h 55m
Multiple Airlines
Wed 11/2512:40 pm
SEA
-
PUS
1 stop15h 05m
Multiple Airlines
Deal found 6/15$1,122

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 June 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$921
(WhyPayMore)

One-way from

$428
(Philippine Airlines)

Popular in

June

Cheapest in

November

Average price

$1,101

Good round-trip deal

$1,480 or less

Good one-way deal

$641 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. 17% potential increase in price ($157 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 19, 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

Mon 12/14

7:20 am-6:35 pm

1 stop28h 15m

Seattle/Tacoma Intl

Mon 12/28

11:55 pm-5:55 am

1 stop37h 00m

$979

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 8/20

4:50 pm-9:59 am

1 stop33h 09m

Seattle/Tacoma Intl

Tue 8/25

4:45 pm-3:00 pm

2 stops30h 15m

$1,038

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 7/23

7:20 am-8:05 pm

1 stop28h 45m

Seattle/Tacoma Intl

Wed 8/12

11:10 pm-6:00 am

1 stop38h 50m

$1,045

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 9/7

11:30 am-12:20 pm

1 stop16h 50m

Seattle/Tacoma Intl

Sat 10/17

5:00 am-4:20 am

2 stops31h 20m

$1,049

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 8/20

4:10 pm-6:00 am

1 stop29h 50m

Seattle/Tacoma Intl

Tue 8/25

9:40 pm-5:20 pm

1 stop27h 40m

$1,082

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 8/21

7:00 pm-1:37 pm

Nonstop10h 37m

Seattle/Tacoma Intl

Mon 8/31

9:30 pm-5:20 pm

1 stop27h 50m

$1,132
Quickest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 7/14

7:00 pm-1:41 pm

Nonstop10h 41m

Seattle/Tacoma Intl

Wed 10/14

7:20 am-5:20 pm

1 stop18h 00m

$1,147

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Tue 11/24

7:45 am-7:10 am

1 stop40h 25m

Seattle/Tacoma Intl

Wed 12/23

8:45 am-6:45 am

1 stop29h 00m

$1,159

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Tue 9/22

10:40 am-10:40 am

1 stop16h 00m

Seattle/Tacoma Intl

Tue 9/29

12:50 pm-8:45 pm

1 stop15h 55m

$1,173

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Mon 7/6

10:30 am-7:45 pm

1 stop25h 15m

Seattle/Tacoma Intl

Sat 7/18

1:55 am-7:00 pm

1 stop25h 05m

$1,214

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/19

Showing 1-10 of 56 resultsSorted by cheapest first
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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, August is the cheapest month in which you can book a flight from South Korea to Seattle (average of $143). Flying from South Korea to Seattle in October is currently the most expensive (average of $1,023). 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 19, 2026.

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 19, 2026.

The most flights from KR0 to SEA 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 (5 on average).

How often are flights from South Korea to Seattle delayed?

About 25% of weekly flights between South Korea and Seattle have experienced delays in the past year, with the average delay time being 162 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?

Tuesday 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, Alaska Airlines have had the lowest number of delays on this route, with just 18% of flights being delayed.

How far ahead should I book a flight from South Korea to Seattle?

The best time to book flights from South Korea to Seattle is 9 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 19, 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
1,218 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

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
1,218 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

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
544 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

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
12,540 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

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
7.8
Good
8,416 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

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
2,827 reviews
Korean Air
8.4
Very good
1,218 reviews

Comfort

8.3

Entertainment

8.2

Food

8.1

Crew

8.7

Overall

8.4

Boarding

8.5

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 28h 15m. 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 Delta (89%), Korean Air (89%) or Alaska Airlines (58%) 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 $1,832, our data indicates the cheapest price to be $543. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $956.

  • 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, August is the cheapest month in which you can book a flight from South Korea to Seattle (average of $143). Flying from South Korea to Seattle in October is currently the most expensive (average of $1,023). 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
Lacey
Ocean Shores
Leavenworth
Olympia
Edmonds
Snoqualmie
Tumwater
Tukwila
Puyallup
Kent
Lynnwood
Renton
Ellensburg
Fife
Lakewood
Issaquah
Shoreline
Marysville

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from South Korea to Seattle

Discover the top 6 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 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$351Average$866FlexibilityNo cancel feeOn-time85%
Korean AirCheapest$468Average$747FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$472Average$518FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$476Average$663FlexibilityNo cancel feeOn-time75%
DeltaCheapest$484Average$728FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$512Average$615FlexibilityNo cancel feeOn-time76%

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