South Korea

$341+ Cheap flights from Seattle (SEA) 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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Feb 28 — Mar 71
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Cheap flight deals from Seattle to South Korea

Cheapest flights from Seattle to South Korea
Explore the most affordable flight options available from Seattle to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 29, 2026.

This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:10 am
SEA
-
ICN
1 stop13h 55m
Multiple Airlines
Sun 4/268:40 pm
ICN
-
SEA
2 stops28h 53m
Multiple Airlines
Deal found 1/28$807
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Wed 3/116:24 pm
SEA
-
ICN
1 stop29h 56m
Multiple Airlines
Wed 3/189:40 pm
ICN
-
SEA
2 stops27h 25m
Multiple Airlines
Deal found 1/28$808
This Air Canada deal was found by Cheapflights users on 1/28. 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 2/210:05 am
SEA
-
ICN
2 stops22h 15m
Multiple Airlines
Mon 2/91:45 pm
ICN
-
SEA
2 stops22h 31m
Multiple Airlines
Deal found 1/28$809
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Tue 3/316:24 pm
SEA
-
ICN
1 stop29h 21m
Multiple Airlines
Sat 4/189:10 pm
ICN
-
SEA
2 stops29h 15m
Multiple Airlines
Deal found 1/28$811
This oojo deal was found by Cheapflights users on 1/27. 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 10/111:15 am
SEA
-
ICN
1 stop26h 20m
China Airlines
Mon 10/1912:35 pm
ICN
-
SEA
1 stop22h 40m
China Airlines
Deal found 1/27$812
This CrystalTravel deal was found by Cheapflights users on 1/28. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/712:10 am
SEA
-
ICN
Nonstop12h 10m
Asiana Airlines
Sun 5/109:00 pm
ICN
-
SEA
Nonstop9h 55m
Asiana Airlines
Deal found 1/28$813
This Gotogate deal was found by Cheapflights users on 1/28. 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.
Tue 4/712:55 am
SEA
-
ICN
Nonstop12h 20m
Multiple Airlines
Mon 4/205:45 pm
ICN
-
SEA
1 stop31h 48m
Multiple Airlines
Deal found 1/28$814
This Kiwi.com deal was found by Cheapflights users on 1/28. 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.
Thu 3/126:24 pm
SEA
-
ICN
1 stop29h 56m
Multiple Airlines
Tue 3/179:20 pm
ICN
-
SEA
1 stop27h 40m
Multiple Airlines
Deal found 1/28$815
This Trip.com deal was found by Cheapflights users on 1/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2812:10 am
SEA
-
ICN
Nonstop12h 10m
Multiple Airlines
Thu 2/56:55 pm
ICN
-
SEA
1 stop31h 20m
Multiple Airlines
Deal found 1/28$816
This Air Canada deal was found by Cheapflights users on 1/27. 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 2/108:00 pm
SEA
-
ICN
1 stop28h 10m
Multiple Airlines
Tue 3/32:10 pm
ICN
-
SEA
2 stops17h 51m
Multiple Airlines
Deal found 1/27$817
This Gotogate deal was found by Cheapflights users on 1/27. 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.
Sun 4/1912:55 am
SEA
-
ICN
Nonstop12h 20m
Multiple Airlines
Tue 5/195:45 pm
ICN
-
SEA
1 stop12h 35m
Multiple Airlines
Deal found 1/27$818
This oojo deal was found by Cheapflights users on 1/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2911:30 pm
SEA
-
PUS
1 stop25h 10m
EVA Air
Mon 2/26:55 pm
PUS
-
SEA
1 stop16h 15m
EVA Air
Deal found 1/28$859

Find flight deals from Seattle to South Korea

Keep the following information in mind while searching for Seattle to South Korea flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$807
(CheapOair)

One-way from

$341
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$870

Good round-trip deal

$670 or less

Good one-way deal

$363 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 Seattle/Tacoma Intl to South Korea
One-way flight from Seattle/Tacoma Intl to South Korea
Highest demand for flights based on searches. 16% potential increase in price ($198 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
Average for round-trip flights in January 2026
Price to beat on a round-trip flight from Seattle/Tacoma Intl to South Korea.
Price to beat on a one-way flight from Seattle/Tacoma Intl to South Korea.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 January 29, 2026.
Use the filters below to find and compare flights from Seattle to South Korea that are best for you.

Fly from

Seattle

Fly to

South Korea

Route

Depart

Return

Price

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Mon 5/4

1:50 am-6:00 pm

1 stop24h 10m

Busan Gimhae

Thu 6/4

7:10 pm-7:00 pm

1 stop15h 50m

$867

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 3/2

11:30 am-4:30 pm

Nonstop12h 00m

Incheon Intl

Mon 3/9

8:05 pm-2:20 pm

Nonstop10h 15m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 3/29

1:00 pm-4:50 pm

Nonstop11h 50m

Incheon Intl

Sun 5/3

7:00 pm-1:11 pm

Nonstop10h 11m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 3/3

11:30 am-4:30 pm

Nonstop12h 00m

Incheon Intl

Mon 3/9

8:05 pm-2:20 pm

Nonstop10h 15m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 4/1

1:00 pm-4:50 pm

Nonstop11h 50m

Incheon Intl

Fri 4/17

7:00 pm-1:07 pm

Nonstop10h 07m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/20

1:00 pm-4:50 pm

Nonstop11h 50m

Incheon Intl

Sat 5/9

7:00 pm-1:11 pm

Nonstop10h 11m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 3/2

11:30 am-4:30 pm

Nonstop12h 00m

Incheon Intl

Thu 3/12

8:05 pm-2:20 pm

Nonstop10h 15m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 3/8

12:35 pm-4:30 pm

Nonstop11h 55m

Incheon Intl

Thu 3/12

8:05 pm-2:20 pm

Nonstop10h 15m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/6

1:00 pm-4:50 pm

Nonstop11h 50m

Incheon Intl

Mon 4/20

7:00 pm-1:07 pm

Nonstop10h 07m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 4/16

12:50 pm-4:40 pm

Nonstop11h 50m

Incheon Intl

Sat 4/25

4:40 pm-10:40 am

Nonstop10h 00m

$887

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/28

Showing 1-10 of 56 results
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Best time to book a flight from Seattle to South Korea

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

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

Currently, April is the cheapest month in which you can book a flight from Seattle to South Korea (average of $335). Flying from Seattle to South Korea in February is currently the most expensive (average of $793). 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 SEA to KR?

Find hourly flight availability from Seattle 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 January 29, 2026.

When flying from Seattle to South Korea, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 44% versus a flight in the afternoon.

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

Use this chart to determine the cheapest time to fly round-trip from Seattle to South Korea. Price data was last updated on January 24, 2026.

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

Weekly flight availability from Seattle to South Korea

Explore weekly flight availability from Seattle 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 January 29, 2026.

The most flights from SEA to KR0 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 (6 on average).

How often are flights from Seattle to South Korea delayed?

About 33% of weekly flights between Seattle and South Korea have experienced delays in the past year, with the average delay time being 180 minutes.

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

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

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

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

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

Over the last year, Delta have had the lowest number of delays on this route, with just 15% of flights being delayed.

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 January 29, 2026.
Read reviews from past customers who have flown Korean Air, Asiana Airlines, and Alaska Airlines from Seattle to South Korea. 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.

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Food

8.1

Crew

8.7

Entertainment

8.2

Comfort

8.3

Boarding

8.5

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Seattle to South Korea. 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 from for flights from Seattle to South Korea?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to South Korea from Seattle.

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

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

    A quick flight from Seattle to South Korea can take about 12h. EVA Air provides one of the quickest options available for as low as $885. There are 5200 mi between Seattle and South Korea. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    $160 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 Asiana Airlines, with prices starting from $168 and $406, respectively.

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

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

    The top 3 most reliable airlines when flying from Seattle to South Korea are Thai Airways (77%), Asiana Airlines (77%) and United Airlines (77%).

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

    The cheapest flight price from Seattle to South Korea is $313. On average you can expect to pay $1,257. The most popular route, (Seattle/Tacoma Intl - Incheon Intl), can usually be booked for $499.

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

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

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

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

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

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

    Currently, April is the cheapest month in which you can book a flight from Seattle to South Korea (average of $335). Flying from Seattle to South Korea in February is currently the most expensive (average of $793). 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

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Alternative routes for Seattle to South Korea

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

Top 9 airlines flying from Seattle to South Korea

Discover the top 9 airlines that operate flights from Seattle 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$212Average$1,171FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$282Average$840FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$335Average$338FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$576Average$972FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$717Average$1,055FlexibilityNo cancel feeOn-time76%
China AirlinesCheapest$835Average$1,030FlexibilityNo cancel feeOn-time70%
Korean AirCheapest$843Average$1,190FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$995Average$1,207FlexibilityNo cancel feeOn-time77%

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