HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$338+ Cheap flights from Seoul (SEL) 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — SEA
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seoul 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.

Cheapflights Tip: The best prices from Seoul to Seattle/Tacoma Intl are usually found in September or November, booked 25 days in advance, depart on a Sunday or Monday and return on a Wednesday

Find flight deals from Seoul to Seattle

Cheapest flights from Seoul to Seattle
Explore the most affordable flight options available from Seoul to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.

This Alaska Airlines deal was found by Cheapflights users on 10/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/319:25 pmICN - SEA
2 stops25h 44mAlaska Airlines
Sat 11/16:25 pmSEA - ICN
2 stops33h 00mAlaska Airlines
Deal found 10/14$349
This Hawaiian Airlines deal was found by Cheapflights users on 10/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/78:35 pmICN - SEA
Nonstop10h 20mHawaiian Airlines
Fri 11/1412:45 pmSEA - ICN
1 stop37h 40mHawaiian Airlines
Deal found 10/14$354
This Alaska Airlines deal was found by Cheapflights users on 10/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/269:25 pmICN - SEA
2 stops35h 23mAlaska Airlines
Sat 11/86:07 pmSEA - ICN
2 stops32h 18mAlaska Airlines
Deal found 10/14$367
This Alaska Airlines deal was found by Cheapflights users on 10/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/279:25 pmICN - SEA
1 stop26h 37mAlaska Airlines
Tue 10/286:05 pmSEA - ICN
2 stops57h 20mAlaska Airlines
Deal found 10/13$390
This Hanatour deal was found by Cheapflights users on 10/13. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:40 pmICN - SEA
Nonstop10h 00mKorean Air
Fri 10/3112:00 pmSEA - ICN
Nonstop11h 55mKorean Air
Deal found 10/13$431
This iWofly deal was found by Cheapflights users on 10/13. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:10 pmICN - SEA
Nonstop9h 50mKorean Air
Fri 10/3112:00 pmSEA - ICN
Nonstop11h 55mKorean Air
Deal found 10/13$437
This WhyPayMore deal was found by Cheapflights users on 10/14. 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 10/214:40 pmICN - SEA
Nonstop10h 00mKorean Air
Mon 10/2712:00 pmSEA - ICN
Nonstop11h 55mKorean Air
Deal found 10/14$438
This Korean Air deal was found by Cheapflights users on 10/13. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/274:10 pmICN - SEA
Nonstop9h 50mKorean Air
Tue 10/2812:00 pmSEA - ICN
Nonstop11h 55mKorean Air
Deal found 10/13$440
This United Airlines deal was found by Cheapflights users on 10/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2111:30 amICN - SEA
1 stop23h 15mUnited Airlines
Mon 10/273:37 pmSEA - ICN
1 stop21h 03mUnited Airlines
Deal found 10/13$445
This ANA deal was found by Cheapflights users on 10/13. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1612:25 pmGMP - SEA
1 stop17h 55mANA
Mon 1/53:45 pmSEA - GMP
1 stop26h 35mANA
Deal found 10/13$913
This Gotogate deal was found by Cheapflights users on 10/13. 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.
Fri 11/211:50 pmGMP - SEA
1 stop21h 20mEVA Air
Thu 11/2712:10 amSEA - GMP
1 stop19h 40mEVA Air
Deal found 10/13$915
This Cheapflightsfares deal was found by Cheapflights users on 10/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1712:25 pmGMP - SEA
1 stop17h 55mANA
Mon 11/2410:05 amSEA - GMP
2 stops19h 25mANA
Deal found 10/14$920

Cheap flight deals from Seoul to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(Alaska Airlines)

One-way from

$338
(Kissandfly.com)

Popular in

August

Cheapest in

September

Average price

$714

Good round-trip deal

$527 or less

Good one-way deal

$401 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 Seoul (SEL) to Seattle/Tacoma Intl
Search Deals
One-way flight from Seoul (SEL) to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($44 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Seoul (SEL) to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seoul 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 October 14, 2025.
Use the filters below to find and compare flights from Seoul to Seattle that are best for you.

Fly from

Seoul

Fly to

Seattle

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 10/27

9:25 pm-8:02 am

1 stop26h 37m

Seattle/Tacoma Intl

Tue 10/28

6:05 pm-7:25 pm

2 stops57h 20m

$390

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 12/28

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Sun 1/11

12:10 am-5:20 am

Nonstop12h 10m

$528

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 12/22

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Sun 1/11

12:10 am-5:20 am

Nonstop12h 10m

$528

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 12/26

8:35 pm-1:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Fri 1/2

1:40 pm-6:35 pm

Nonstop11h 55m

$528

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 12/27

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Sun 1/11

12:10 am-5:20 am

Nonstop12h 10m

$528

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 12/19

8:35 pm-1:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Fri 1/2

1:40 pm-6:35 pm

Nonstop11h 55m

$528

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 12/22

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Sun 2/8

12:10 am-5:20 am

Nonstop12h 10m

$598

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 12/25

6:00 pm-8:23 am

1 stop31h 23m

Seattle/Tacoma Intl

Sat 1/3

7:12 pm-4:15 pm

1 stop28h 03m

$599

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 12/16

6:00 pm-10:30 pm

2 stops21h 30m

Seattle/Tacoma Intl

Mon 1/5

7:12 pm-4:15 pm

1 stop28h 03m

$599

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 12/25

6:00 pm-8:23 am

1 stop31h 23m

Seattle/Tacoma Intl

Wed 2/11

5:00 am-5:40 am

2 stops31h 40m

$599

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 41 results
1
2
3
...
5

Compare providers for flights from Seoul to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seoul to Seattle in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seoul-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seoul-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seoul-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seoul-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seoul-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seoul to Seattle

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

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

Use this chart to determine the optimal time to book a round-trip flight from Seoul to Seattle. Price data was last updated on October 10, 2025.

To ensure you get the cheapest price possible for a flight from Seoul to Seattle, you should look to book at least 25 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, November is the cheapest month in which you can book a flight from Seoul to Seattle (average of $341). Flying from Seoul to Seattle in August is currently the most expensive (average of $670). 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 SEL to SEA?

Find hourly flight availability from Seoul 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 October 14, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 53% on flights from Seoul to Seattle by exploring options for tickets in the evening.

Weekly flight availability from Seoul to Seattle

Explore weekly flight availability from Seoul 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 October 14, 2025.

The most flights from SEL to SEA are scheduled on a Monday (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 much does it cost to fly round-trip from Seoul to Seattle?

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 October 14, 2025.
Peruse reviews from past customers who have flown with Korean Air, Asiana Airlines, and Alaska Airlines from Seoul to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,149 reviews

Food

8.1

Entertainment

8.2

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

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
1,149 reviews
Korean Air
8.4
Very good
1,149 reviews

Food

8.1

Entertainment

8.2

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

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
486 reviews
Korean Air
8.4
Very good
1,149 reviews

Food

8.1

Entertainment

8.2

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

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
11,079 reviews
Korean Air
8.4
Very good
1,149 reviews

Food

8.1

Entertainment

8.2

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

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
8.0
Very good
7,972 reviews
Korean Air
8.4
Very good
1,149 reviews

Food

8.1

Entertainment

8.2

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

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
2,779 reviews
Korean Air
8.4
Very good
1,149 reviews

Food

8.1

Entertainment

8.2

Boarding

8.5

Crew

8.7

Comfort

8.3

Overall

8.4

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 Seoul 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 Seoul?

    If you book a flight to Seattle from Seoul, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 7 flights from Seoul to Seattle/Tacoma Intl per day from 7 different airlines.

  • How popular is this Seoul to Seattle flight route?

    The Seoul to Seattle/Tacoma Intl flight path was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Seoul to Seattle?

    Alaska Airlines, Asiana Airlines, and ANA can get you from Seoul to Seattle in just under 9h 55m. Your travel time can differ by up to 16h 42m. Seoul and Seattle are separated by a distance of 5200 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Seoul to Seattle round-trip?

    According to our current data, Asiana Airlines ($470), Air Canada ($472), and Alaska Airlines ($476) offers the cheapest pricing from Seoul to Seattle. You may be able to fly from Seoul to Seattle for 34% less than the average price by searching for these airlines.

  • What are the most reliable airlines from Seoul to Seattle?

    The top 3 most reliable airlines when flying from Seoul to Seattle are Alaska Airlines (58%), Hawaiian Airlines (58%) and Delta (47%).

  • What are the cheapest flights from Seoul to Seattle?

    Looking for the cheapest flight from Seoul to Seattle? While on average our users pay $1,074, our data indicates the cheapest price to be $189. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $325.

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

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

  • How can I find direct flights from Seoul to Seattle?

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

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

    Yes. Cheapflights offers flight deals from Seoul 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 Seoul to Seattle?

    Currently, November is the cheapest month in which you can book a flight from Seoul to Seattle (average of $341). Flying from Seoul to Seattle in August is currently the most expensive (average of $670). 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
Tukwila
Tacoma
Lakewood
Ocean Shores
Lynnwood
Edmonds
Leavenworth
Renton
Lacey
Olympia
Kent
Federal Way
Cle Elum
Puyallup
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline

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 Seoul to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
Incheon Intl to Seattle flights
Incheon Intl to Portland flights
Busan to Seattle flights
Incheon Intl to Spokane flights
Busan to Portland flights
Gimpo Intl to Portland flights

Top 7 airlines flying from Seoul to Seattle

Discover the top 7 airlines that operate flights from Seoul 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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$470Average$685FlexibilityNo cancel feeOn-time76%
Air CanadaCheapest$472Average$727FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$476Average$572FlexibilityNo cancel feeOn-time75%
Korean AirCheapest$483Average$765FlexibilityNo cancel feeOn-time81%
Hawaiian AirlinesCheapest$485Average$866FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$516Average$646FlexibilityNo cancel feeOn-time69%
DeltaCheapest$623Average$744FlexibilityNo 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.