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$322+ 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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 December 12, 2025.

This Vliegwinkel deal was found by Cheapflights users on 12/10. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:55 pmICN - SEA
1 stop31h 36mAir Canada
Sun 12/288:00 pmSEA - ICN
1 stop28h 10mAir Canada
Deal found 12/10$482
This Hanatour deal was found by Cheapflights users on 12/10. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:55 pmICN - SEA
1 stop13h 36mAir Canada
Sat 3/2810:05 amSEA - ICN
1 stop14h 00mAir Canada
Deal found 12/10$518
This Tourvis deal was found by Cheapflights users on 12/9. 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 Tourvis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:55 pmICN - SEA
1 stop20h 51mAir Canada
Sun 1/45:50 amSEA - ICN
1 stop18h 20mAir Canada
Deal found 12/9$539
This WhyPayMore deal was found by Cheapflights users on 12/11. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/175:55 pmICN - SEA
1 stop32h 36mAir Canada
Sat 2/283:40 pmSEA - ICN
1 stop32h 30mAir Canada
Deal found 12/11$546
This Air Canada deal was found by Cheapflights users on 12/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:55 pmICN - SEA
1 stop21h 51mAir Canada
Tue 2/108:00 pmSEA - ICN
1 stop28h 10mAir Canada
Deal found 12/11$552
This United Airlines deal was found by Cheapflights users on 12/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/196:00 pmICN - SEA
1 stop23h 59mUnited Airlines
Wed 12/311:35 pmSEA - ICN
1 stop23h 05mUnited Airlines
Deal found 12/11$559
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:00 pmICN - SEA
1 stop17h 45mUnited Airlines
Sat 2/285:20 pmSEA - ICN
1 stop29h 55mUnited Airlines
Deal found 12/10$560
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2712:45 pmICN - SEA
1 stop36h 38mUnited Airlines
Mon 1/126:03 amSEA - ICN
1 stop30h 37mUnited Airlines
Deal found 12/10$581
This United Airlines deal was found by Cheapflights users on 12/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:45 pmICN - SEA
2 stops26h 45mUnited Airlines
Tue 2/103:30 pmSEA - ICN
2 stops45h 10mUnited Airlines
Deal found 12/10$611
This Vliegwinkel deal was found by Cheapflights users on 12/10. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/138:35 pmICN - SEA
Nonstop10h 10mHawaiian Airlines
Sun 12/281:40 pmSEA - ICN
Nonstop11h 55mHawaiian Airlines
Deal found 12/10$638
This Hanatour deal was found by Cheapflights users on 12/10. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:35 pmICN - SEA
Nonstop10h 10mHawaiian Airlines
Sat 2/281:40 pmSEA - ICN
Nonstop11h 55mHawaiian Airlines
Deal found 12/10$639
This Korean Air deal was found by Cheapflights users on 12/10. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/214:10 pmPUS - SEA
1 stop14h 10mKorean Air
Wed 12/3111:30 amSEA - PUS
1 stop27h 40mKorean Air
Deal found 12/10$837

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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$434
(Expedia)

One-way from

$322
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$645

Good round-trip deal

$567 or less

Good one-way deal

$617 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. 8% potential increase in price ($62 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 December 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

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 December 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

Mon 3/9

11:45 am-4:14 pm

1 stop20h 29m

Seattle/Tacoma Intl

Wed 3/18

5:00 am-3:15 pm

1 stop18h 15m

$559

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 2/7

12:45 pm-11:47 pm

2 stops28h 02m

Seattle/Tacoma Intl

Sat 2/14

5:20 pm-4:15 pm

1 stop29h 55m

$559

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 3/2

12:45 pm-6:26 pm

1 stop22h 41m

Seattle/Tacoma Intl

Mon 3/16

7:15 am-4:40 am

1 stop29h 25m

$560

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 12/27

12:45 pm-8:23 am

1 stop36h 38m

Seattle/Tacoma Intl

Mon 1/12

12:35 pm-5:40 am

1 stop24h 05m

$581

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 1/30

6:00 pm-11:16 pm

2 stops22h 16m

Seattle/Tacoma Intl

Fri 2/13

9:19 am-4:15 pm

1 stop37h 56m

$592

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Fri 2/20

7:55 am-2:31 pm

2 stops23h 36m

Seattle/Tacoma Intl

Tue 2/24

5:50 am-8:45 pm

2 stops21h 55m

$645

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 1/26

6:00 pm-9:15 pm

2 stops20h 15m

Seattle/Tacoma Intl

Mon 2/23

9:19 am-4:15 pm

1 stop37h 56m

$706

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 1/19

12:45 pm-11:30 am

1 stop15h 45m

Seattle/Tacoma Intl

Mon 2/16

9:19 am-5:40 am

1 stop27h 21m

$706

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 1/23

6:00 pm-4:29 pm

2 stops39h 29m

Seattle/Tacoma Intl

Fri 1/30

6:03 am-4:15 pm

1 stop17h 12m

$706

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 5/8

4:50 pm-11:29 pm

1 stop22h 39m

Seattle/Tacoma Intl

Sat 5/16

11:35 am-4:20 am

1 stop24h 45m

$708

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 46 results
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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, 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 $667). 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 December 12, 2025.

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 37% 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 December 16, 2024.

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 December 12, 2025.

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 (4 on average).

How often are flights from South Korea to Seattle delayed?

About 33% of weekly flights between South Korea and Seattle have experienced delays in the past year, with the average delay time being 156 minutes.

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

Historically, flights departing at night 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, Hawaiian Airlines have had the lowest number of delays on this route, with just 14% 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 December 12, 2025.
Read reviews from past customers who have flown Korean Air, Asiana Airlines, and Alaska 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
1,184 reviews

Food

8.1

Comfort

8.3

Crew

8.7

Entertainment

8.2

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
1,184 reviews
Korean Air
8.4
Very good
1,184 reviews

Food

8.1

Comfort

8.3

Crew

8.7

Entertainment

8.2

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
8.2
Very good
492 reviews
Korean Air
8.4
Very good
1,184 reviews

Food

8.1

Comfort

8.3

Crew

8.7

Entertainment

8.2

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
8.0
Very good
11,432 reviews
Korean Air
8.4
Very good
1,184 reviews

Food

8.1

Comfort

8.3

Crew

8.7

Entertainment

8.2

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
7.9
Good
8,007 reviews
Korean Air
8.4
Very good
1,184 reviews

Food

8.1

Comfort

8.3

Crew

8.7

Entertainment

8.2

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
2,817 reviews
Korean Air
8.4
Very good
1,184 reviews

Food

8.1

Comfort

8.3

Crew

8.7

Entertainment

8.2

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 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.

  • How long is the flight from South Korea to Seattle?

    Departing from South Korea to Seattle will take you 18h 20m. South Korea and Seattle are separated by a distance of 5228 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?

    $245 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on Alaska Airlines and Air Canada, with prices starting from $264 and $351, 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 (79%), Korean Air (79%) or Thai Airways (74%) 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 $1,199, our data indicates the cheapest price to be $387. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $558.

  • 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 $667). 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
Tacoma
SeaTac
Lakewood
Olympia
Ocean Shores
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Tukwila
Kent
Cle Elum
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Fife
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Shoreline
Centralia
Federal Way

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$352Average$866FlexibilityNo cancel feeOn-time85%
Asiana AirlinesCheapest$466Average$667FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$470Average$880FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$472Average$727FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$476Average$578FlexibilityNo cancel feeOn-time75%
DeltaCheapest$606Average$678FlexibilityNo cancel feeOn-timeN/A

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