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$436+ Cheap flights from Seoul (SEL) to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — SEA
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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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

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Cheapflights Tip: The best prices from Seoul to Seattle/Tacoma Intl are usually found in March or February, booked 34 days in advance, depart on a Tuesday or Thursday and return on a Monday

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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$436
(WhyPayMore)

Popular in

August

Cheapest in

March

Average price

$866

Good round-trip deal

$662 or less

Good one-way deal

$585 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
Highest demand for flights based on searches. 24% potential increase in price ($295 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2025
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Seoul (SEL) to Seattle/Tacoma Intl.
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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 May 1, 2025.

This WhyPayMore deal was found by Cheapflights users on 4/30. 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.
Fri 5/236:20 pmICN - SEA
Nonstop10h 10mAsiana Airlines
Sun 6/12:15 pmSEA - ICN
Nonstop11h 40mAsiana Airlines
Deal found 4/30$436
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Sun 5/44:40 pmICN - SEA
Nonstop10h 00mKorean Air
Thu 5/1512:50 pmSEA - ICN
Nonstop11h 50mKorean Air
Deal found 4/29$456
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/174:50 pmICN - SEA
2 stops37h 10mUnited Airlines
Sat 9/67:34 pmSEA - ICN
1 stop27h 26mUnited Airlines
Deal found 4/30$462
This Tourvis deal was found by Cheapflights users on 4/30. 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 5/136:20 pmICN - SEA
Nonstop10h 10mMultiple Airlines
Wed 5/214:00 pmSEA - ICN
1 stop20h 20mMultiple Airlines
Deal found 4/30$550
This Gotogate deal was found by Cheapflights users on 4/30. 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 9/105:45 pmICN - SEA
1 stop12h 31mAir Canada
Wed 9/2410:00 amSEA - ICN
1 stop14h 05mAir Canada
Deal found 4/30$553
This Delta deal was found by Cheapflights users on 4/30. 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.
Wed 5/144:00 pmICN - SEA
1 stop16h 08mDelta
Tue 5/2012:50 pmSEA - ICN
Nonstop11h 50mDelta
Deal found 4/30$557
This Gotogate deal was found by Cheapflights users on 4/30. 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 10/267:50 pmGMP - SEA
2 stops38h 36mANA
Wed 10/294:40 pmSEA - GMP
1 stop26h 40mANA
Deal found 4/30$818
This EVA Air deal was found by Cheapflights users on 4/29. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/191:50 pmGMP - SEA
1 stop21h 40mEVA Air
Thu 10/161:30 amSEA - GMP
1 stop19h 20mEVA Air
Deal found 4/29$874
This EVA Air deal was found by Cheapflights users on 4/29. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/191:50 pmGMP - SEA
2 stops22h 47mMultiple Airlines
Thu 10/1612:30 amSEA - GMP
1 stop20h 20mMultiple Airlines
Deal found 4/29$965
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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.
Fri 9/197:55 amGMP - SEA
2 stops24h 58mJapan Airlines
Fri 10/177:20 amSEA - GMP
2 stops22h 30mJapan Airlines
Deal found 4/29$1,128

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 May 1, 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

Fri 5/23

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Sun 6/1

2:15 pm-5:55 pm

Nonstop11h 40m

$436

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 5/15

4:40 pm-10:40 am

Nonstop10h 00m

Seattle/Tacoma Intl

Sun 5/18

12:50 pm-4:40 pm

Nonstop11h 50m

$457

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 5/17

4:50 pm-2:00 pm

2 stops37h 10m

Seattle/Tacoma Intl

Sat 9/6

7:34 pm-3:00 pm

1 stop27h 26m

$462

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 5/13

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Wed 5/21

4:00 pm-4:20 am

1 stop20h 20m

$550

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 9/10

5:45 pm-2:16 pm

1 stop12h 31m

Seattle/Tacoma Intl

Wed 9/24

10:00 am-4:05 pm

1 stop14h 05m

$553

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 5/14

4:00 pm-6:50 pm

1 stop18h 50m

Seattle/Tacoma Intl

Wed 5/21

12:50 pm-4:40 pm

Nonstop11h 50m

$557

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Sun 10/26

7:50 pm-6:26 pm

2 stops38h 36m

Seattle/Tacoma Intl

Wed 10/29

4:40 pm-11:20 am

1 stop26h 40m

$818

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Fri 9/19

1:50 pm-7:30 pm

1 stop21h 40m

Seattle/Tacoma Intl

Thu 10/16

1:30 am-12:50 pm

1 stop19h 20m

$874

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Fri 9/19

1:50 pm-8:37 pm

2 stops22h 47m

Seattle/Tacoma Intl

Thu 10/16

12:30 am-12:50 pm

1 stop20h 20m

$965

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Fri 9/19

7:55 am-4:53 pm

2 stops24h 58m

Seattle/Tacoma Intl

Fri 10/17

7:20 am-9:50 pm

2 stops22h 30m

$1,128

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 28 results
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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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 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 AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seoul-Seattle flight deals on Cheapflights vs. AranGrant >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 AranGrant the most. AranGrant 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 April 25, 2025.

To ensure you get the cheapest price possible for a flight from Seoul to Seattle, you should look to book at least 34 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, January is the cheapest month in which you can book a flight from Seoul to Seattle (average of $238). Flying from Seoul to Seattle in July is currently the most expensive (average of $405). 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 May 1, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 27% on flights from Seoul to Seattle by exploring options for tickets in the morning.

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 May 1, 2025.

The most flights from SEL to SEA are scheduled on a Wednesday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

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 May 1, 2025.
To help decide which airline to fly from Seoul to Seattle, see what other customers have to say about EVA Air, Korean Air and Japan Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
Korean Air
8.4
Very good
1,068 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
Japan Airlines
8.3
Very good
1,464 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend
ANA
8.3
Very good
852 reviews
EVA Air
8.4
Very good
1,186 reviews

Food

8.1

Boarding

8.4

Crew

8.6

Entertainment

8.0

Comfort

8.3

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Gary,Apr 2025

DPS - TPE

The staff was excellent. Kind, courteous, and overall just hospitable. Definitely recommend

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 8 flights from Seoul to Seattle/Tacoma Intl per day from 6 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.

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

    According to our current data, Asiana Airlines ($436), Korean Air ($457), and United Airlines ($462) offers the cheapest pricing from Seoul to Seattle. You may be able to fly from Seoul to Seattle for 51% less than the average price by searching for these airlines.

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

    To fly one-way, consider booking your trip with Asiana Airlines, which is currently one of the cheapest options available, starting at $522. WestJet flights start at $524 while deals on EVA Air start at $531 one-way.

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

    The top 3 most reliable airlines when flying from Seoul to Seattle are Delta (58%), Korean Air (58%) and Thai Airways (34%).

  • What are the cheapest flights from Seoul to Seattle?

    Looking for the cheapest flight from Seoul to Seattle? While on average our users pay $1,235, our data indicates the cheapest price to be $455. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $452.

  • 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, January is the cheapest month in which you can book a flight from Seoul to Seattle (average of $238). Flying from Seoul to Seattle in July is currently the most expensive (average of $405). 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 Seoul?

Book flights to Seoul if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Lynnwood
Aberdeen
Shelton
Silverdale
Redmond
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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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
Gimpo Intl to Portland flights
Busan to Seattle flights
Busan to Portland flights
Incheon Intl to Spokane flights

Top 6 airlines flying from Seoul to Seattle

Discover the top 6 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$474Average$752FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$515Average$1,051FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$516Average$860FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$538Average$718FlexibilityNo cancel feeOn-time71%
Asiana AirlinesCheapest$641Average$985FlexibilityNo cancel feeOn-time76%
DeltaCheapest$667Average$1,078FlexibilityNo cancel feeOn-timeN/A

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