HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seoul

$383+ Cheap flights from Seattle (SEA) to Seoul (SEL)

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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SEL
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Seoul 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.

The best prices from Seattle/Tacoma Intl to Seoul are usually found in January or November, booked 74 days in advance, depart on a Thursday or Sunday and return on a Wednesday

Cheap flight deals from Seattle to Seoul

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Seoul (SEL). 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 January 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$908
(Mytrip)

One-way from

$386
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$982
Provider with most accurate pricing for Seattle/Tacoma Intl-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Seoul (SEL) flights.
Search Deals
From Seattle/Tacoma Intl to Seoul (SEL)
Search Deals
One-way flight from Seattle/Tacoma Intl to Seoul (SEL)
Search Deals
High demand for flights, 17% potential price rise
Search Deals
Best time to find cheap flights, 2% potential price drop
Search Deals
Average for round-trip flights in January 2025
Search Deals

Find flight deals from Seattle to Seoul

Cheapest flights from Seattle to Seoul
Explore the most affordable flight options available from Seattle to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Mytrip deal was found by Cheapflights users on 1/20. 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.
Mon 3/35:38 pmSEA - ICN
2 stops29h 57mMultiple Airlines
Mon 3/105:50 pmICN - SEA
3 stops33h 56mMultiple Airlines
Deal found 1/20$908
This Asiana Airlines deal was found by Cheapflights users on 1/19. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/612:45 pmSEA - ICN
Nonstop12h 05mAsiana Airlines
Thu 3/136:15 pmICN - SEA
Nonstop9h 40mAsiana Airlines
Deal found 1/19$912
This Hawaiian Airlines deal was found by Cheapflights users on 1/20. 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 2/217:00 amSEA - ICN
1 stop19h 25mHawaiian Airlines
Mon 3/39:25 pmICN - SEA
1 stop16h 55mHawaiian Airlines
Deal found 1/20$937
This Justfly.com deal was found by Cheapflights users on 1/20. 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.
Wed 4/97:05 pmSEA - ICN
1 stop29h 00mAir Canada
Thu 5/15:45 pmICN - SEA
1 stop12h 28mAir Canada
Deal found 1/20$938
This oojo deal was found by Cheapflights users on 1/20. 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 3/231:10 amSEA - ICN
1 stop18h 10mChina Airlines
Thu 4/108:35 pmICN - SEA
1 stop14h 55mChina Airlines
Deal found 1/20$940
This Alaska Airlines deal was found by Cheapflights users on 1/20. 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 2/217:00 amSEA - ICN
1 stop19h 25mAlaska Airlines
Sun 3/29:25 pmICN - SEA
1 stop25h 55mAlaska Airlines
Deal found 1/20$987
This oojo deal was found by Cheapflights users on 1/20. 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 3/231:10 amSEA - ICN
1 stop17h 20mEVA Air
Wed 4/912:00 pmICN - SEA
1 stop23h 30mEVA Air
Deal found 1/20$998
This oojo deal was found by Cheapflights users on 1/20. 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.
Mon 3/108:00 pmSEA - ICN
1 stop45h 35mTurkish Airlines
Wed 3/269:35 amICN - SEA
1 stop48h 30mTurkish Airlines
Deal found 1/20$1,007
This FlightHub deal was found by Cheapflights users on 1/19. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:30 amSEA - GMP
1 stop19h 20mEVA Air
Fri 10/311:50 pmGMP - SEA
1 stop21h 20mEVA Air
Deal found 1/19$1,016
This Mytrip deal was found by Cheapflights users on 1/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/612:41 pmSEA - GMP
3 stops31h 24mMultiple Airlines
Thu 3/132:25 pmGMP - SEA
3 stops35h 30mMultiple Airlines
Deal found 1/19$1,050
This oojo deal was found by Cheapflights users on 1/20. 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.
Wed 2/193:44 pmSEA - ICN
2 stops29h 11mCathay Pacific
Wed 2/267:35 pmICN - SEA
2 stops31h 25mCathay Pacific
Deal found 1/20$1,061
This CrystalTravel deal was found by Cheapflights users on 1/20. 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.
Wed 2/56:10 amSEA - ICN
1 stop18h 30mKorean Air
Mon 2/174:10 pmICN - SEA
Nonstop9h 50mKorean Air
Deal found 1/20$1,070

Find flights from Seattle to Seoul within your budget

Customize your flight search to find flights from Seattle to Seoul 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 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 3/3

5:38 pm-4:35 pm

2 stops29h 57m

Incheon Intl

Mon 3/10

5:50 pm-11:46 am

3 stops33h 56m

$908

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 3/6

12:45 pm-5:50 pm

Nonstop12h 05m

Incheon Intl

Thu 3/13

6:15 pm-11:55 am

Nonstop9h 40m

$912

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 2/21

7:00 am-7:25 pm

1 stop19h 25m

Incheon Intl

Mon 3/3

9:25 pm-9:20 pm

1 stop16h 55m

$937

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 4/9

7:05 pm-4:05 pm

1 stop29h 00m

Incheon Intl

Thu 5/1

5:45 pm-2:13 pm

1 stop12h 28m

$938

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 3/23

1:10 am-11:20 am

1 stop18h 10m

Incheon Intl

Thu 4/10

8:35 pm-7:30 pm

1 stop14h 55m

$940

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/14

1:30 am-6:45 pm

1 stop25h 15m

Incheon Intl

Wed 4/30

12:00 pm-7:30 pm

1 stop23h 30m

$973

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 2/21

7:00 am-7:25 pm

1 stop19h 25m

Incheon Intl

Sun 3/2

9:25 pm-6:20 am

1 stop25h 55m

$987

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 3/10

8:00 pm-9:35 am

1 stop45h 35m

Incheon Intl

Wed 3/26

9:35 am-6:05 pm

1 stop48h 30m

$1,007

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 2/19

3:44 pm-1:55 pm

2 stops29h 11m

Incheon Intl

Wed 2/26

7:35 pm-10:00 am

2 stops31h 25m

$1,061

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 2/5

6:10 am-5:40 pm

1 stop18h 30m

Incheon Intl

Mon 2/17

4:10 pm-9:00 am

Nonstop9h 50m

$1,070

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 30 results
1
2
3

Compare providers for flights from Seattle to Seoul

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 Seattle to Seoul in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star

*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 Seattle-Seoul flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Seoul flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Seoul flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Seoul 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 Seattle-Seoul 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 Seattle to Seoul

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

Travel insights for flights from Seattle to Seoul

Get recent, data-driven insights about flights from Seattle to Seoul including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Seoul. Price data was last updated on January 17, 2025.

Booking 74 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to Seoul. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Seattle to Seoul (average of $1,086). Flying from Seattle to Seoul in June is currently the most expensive (average of $1,723). 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 SEL?

Find hourly flight availability from Seattle to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.

It’s optimal to fly from Seattle to Seoul in the evening. By choosing this option you can save up to 19% on the cost of your flight, compared to a flight at noon.

What is the cheapest day to fly from Seattle to Seoul?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Seoul. Price data was last updated on December 16, 2024.

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

Weekly flight availability from Seattle to Seoul

Explore weekly flight availability from Seattle to Seoul. 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 21, 2025.

The most flights from SEA to SEL are scheduled on a Monday (9 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Seoul by month

Plan your trip to Seoul by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.

Temperature in Seoul by month

Plan your trip to Seoul by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Seoul

Get insights into the airlines that provide service to Seoul. 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 Seoul. Reviews last updated January 21, 2025.
Read through reviews of airlines operating flights from Seattle to Seoul, such as Asiana Airlines, Air Canada and China Airlines. 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
8.5
Very good
1,039 reviews

Overall

8.5

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

Korean Air
8.5
Very good
1,039 reviews
Korean Air
8.5
Very good
1,039 reviews

Overall

8.5

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

EVA Air
8.4
Very good
1,255 reviews
Korean Air
8.5
Very good
1,039 reviews

Overall

8.5

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

ANA
8.4
Very good
852 reviews
Korean Air
8.5
Very good
1,039 reviews

Overall

8.5

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

Japan Airlines
8.3
Very good
1,449 reviews
Korean Air
8.5
Very good
1,039 reviews

Overall

8.5

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

China Airlines
8.2
Very good
737 reviews
Korean Air
8.5
Very good
1,039 reviews

Overall

8.5

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Food

8.1

Reviews

1 / 10

It was a great experience in all aspects including passengers are respectful to each other. I will consider to use Korean Air again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Seoul. 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 Seoul?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to Seoul. You should not have trouble finding flights to Seoul from Seattle/Tacoma Intl; the airport handles an average of 7 outbound flights to Seoul per day. You should also have plenty of airline options to choose from since 9 airlines have flights from the Seattle airport to Seoul. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • How popular is this Seattle to Seoul flight route?

    Within the past month, 200 users have taken a look at flights from Seattle/Tacoma Intl to Seoul.

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

    Asiana Airlines, at $910, was found to be the cheapest airline from Seattle to Seoul.Alternate airlines to your destination round-trip include Alaska Airlines and Air Canada. Asiana Airlines is priced at 29% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Asiana Airlines, which is currently one of the cheapest options available, starting at $472. Hawaiian Airlines flights start at $487 while deals on Alaska Airlines start at $490 one-way.

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

    No one likes to see their flight delayed. When booking a flight from Seattle to Seoul consider choosing Delta (70%), Korean Air (57%) or Etihad Airways (55%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Seattle to Seoul?

    Looking for the cheapest flight from Seattle to Seoul? While on average our users pay $1,529, our data indicates the cheapest price to be $367. The most popular route (Seattle/Tacoma Intl - Incheon Intl), is priced around $757.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Seattle to Seoul (average of $1,086). Flying from Seattle to Seoul in June is currently the most expensive (average of $1,723). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 9 airlines flying from Seattle to Seoul

Discover the top 9 airlines that operate flights from Seattle to Seoul. 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 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$600Average$813FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$769Average$1,477FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$849Average$1,022FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$856Average$949FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$948Average$1,292FlexibilityNo cancel feeOn-time76%
Turkish AirlinesCheapest$970Average$1,204FlexibilityNo cancel feeOn-time77%
DeltaCheapest$985Average$1,407FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$986Average$1,358FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$1,011Average$1,130FlexibilityNo cancel feeOn-time74%
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.