Seattle

$352+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Apr 2 — Apr 91
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$471
(WhyPayMore)

One-way from

$352
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$670

Good round-trip deal

$865 or less

Good one-way deal

$578 or less
Provider with most accurate pricing for Seoul (SEL)-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for Seoul (SEL)-Seattle/Tacoma Intl flights.
From South Korea to Seattle/Tacoma Intl
One-way flight from South Korea to Seattle/Tacoma Intl
Highest demand for flights based on searches. 23% potential increase in price ($283 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Average for round-trip flights in March 2025
Price to beat on a round-trip flight from South Korea to Seattle/Tacoma Intl.
Price to beat on a one-way flight from South Korea to Seattle/Tacoma Intl.

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 March 28, 2025.

This WhyPayMore deal was found by Cheapflights users on 3/27. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/125:45 pmICN - SEA
1 stop12h 28mAir Canada
Thu 5/297:15 pmSEA - ICN
1 stop28h 50mAir Canada
Deal found 3/27$471
This WhyPayMore deal was found by Cheapflights users on 3/27. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/227:20 pmICN - SEA
Nonstop10h 15mKorean Air
Fri 7/251:20 pmSEA - ICN
Nonstop11h 20mKorean Air
Deal found 3/27$487
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1611:30 amICN - SEA
2 stops18h 29mUnited Airlines
Wed 4/238:50 amSEA - ICN
2 stops27h 30mUnited Airlines
Deal found 3/27$516
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/34:00 pmICN - SEA
1 stop16h 05mDelta
Sun 4/1312:40 pmSEA - ICN
Nonstop11h 50mDelta
Deal found 3/26$617
This Korean Air deal was found by Cheapflights users on 3/27. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/210:40 amPUS - SEA
1 stop18h 50mKorean Air
Wed 4/912:40 pmSEA - PUS
1 stop28h 50mKorean Air
Deal found 3/27$622
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Thu 10/2310:40 amICN - SEA
2 stops19h 36mMultiple Airlines
Sat 10/255:45 amSEA - ICN
1 stop18h 20mMultiple Airlines
Deal found 3/27$623
This WhyPayMore deal was found by Cheapflights users on 3/27. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/146:20 pmICN - SEA
Nonstop10h 10mAsiana Airlines
Wed 5/72:15 pmSEA - ICN
Nonstop11h 40mAsiana Airlines
Deal found 3/27$637
This Justfly.com deal was found by Cheapflights users on 3/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/87:40 amGMP - SEA
1 stop22h 45mANA
Mon 8/41:45 pmSEA - GMP
2 stops29h 20mANA
Deal found 3/27$753
This Gotogate deal was found by Cheapflights users on 3/27. 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.
Wed 5/710:35 pmICN - SEA
2 stops26h 25mHainan Airlines
Thu 5/2211:00 amSEA - ICN
2 stops42h 30mHainan Airlines
Deal found 3/27$775
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/84:30 pmPUS - SEA
1 stop13h 05mDelta
Tue 5/136:15 amSEA - PUS
2 stops21h 20mDelta
Deal found 3/27$813
This Booking.com deal was found by Cheapflights users on 3/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1112:45 pmPUS - SEA
2 stops25h 28mMultiple Airlines
Wed 5/1410:00 amSEA - PUS
2 stops17h 35mMultiple Airlines
Deal found 3/27$815
This Gotogate deal was found by Cheapflights users on 3/26. 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 12/111:50 amPUS - SEA
1 stop23h 25mChina Airlines
Thu 12/412:10 amSEA - PUS
1 stop17h 40mChina Airlines
Deal found 3/26$878

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 March 28, 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 5/12

5:45 pm-2:13 pm

1 stop12h 28m

Seattle/Tacoma Intl

Thu 5/29

7:15 pm-4:05 pm

1 stop28h 50m

$471

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 5/22

7:20 pm-1:35 pm

Nonstop10h 15m

Seattle/Tacoma Intl

Fri 7/25

1:20 pm-4:40 pm

Nonstop11h 20m

$487

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 4/16

11:30 am-6:07 pm

2 stops22h 37m

Seattle/Tacoma Intl

Sat 4/19

5:05 pm-3:00 pm

1 stop29h 55m

$516

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 9/9

10:40 am-2:16 pm

2 stops19h 36m

Seattle/Tacoma Intl

Tue 9/23

10:00 am-4:05 pm

1 stop14h 05m

$592

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 5/13

7:20 pm-1:35 pm

Nonstop10h 15m

Seattle/Tacoma Intl

Tue 7/1

6:15 am-5:20 pm

1 stop19h 05m

$615

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 4/14

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Wed 5/7

2:15 pm-5:55 pm

Nonstop11h 40m

$637

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Sun 5/11

7:00 am-1:35 pm

1 stop22h 35m

Seattle/Tacoma Intl

Sun 5/18

12:50 pm-8:45 pm

1 stop15h 55m

$706

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Thu 9/4

7:40 am-2:25 pm

1 stop22h 45m

Seattle/Tacoma Intl

Tue 9/16

4:30 pm-6:35 pm

1 stop34h 05m

$784

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Thu 5/8

8:45 am-10:40 am

1 stop17h 55m

Seattle/Tacoma Intl

Thu 5/15

6:15 am-7:45 am

2 stops33h 30m

$813

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

Sun 5/11

12:45 pm-10:13 pm

2 stops25h 28m

Seattle/Tacoma Intl

Wed 5/14

10:00 am-7:35 pm

2 stops17h 35m

$815

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 29 results
1
2
3

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 $411). 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 March 28, 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.

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 March 28, 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.

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
8.3
Very good

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

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?

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

    $405 is the cheapest one-way deal found within the past few days, from Hainan Airlines. You may also be able to find cheap deals on WestJet and Air Canada, with prices starting from $409 and $479, respectively.

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

  • 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 (53%), Korean Air (53%) or Etihad Airways (30%) 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 $2,101, our data indicates the cheapest price to be $479. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $487.

  • 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 $411). 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
Renton
Lacey
Ocean Shores
Leavenworth
Federal Way
Olympia
Cle Elum
Centralia
Mukilteo
Aberdeen
Shoreline
Lynnwood
Shelton
Silverdale
Redmond
Monroe

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.

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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$538Average$718FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$595Average$779FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$615Average$887FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$643Average$998FlexibilityNo cancel feeOn-time76%
DeltaCheapest$668Average$1,140FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$684Average$1,153FlexibilityNo cancel feeOn-time81%
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.