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$330+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — SEA
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
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

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3. Compare prices and book

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Cheapflights Tip: The best prices from Seoul to Seattle/Tacoma Intl are usually found in November or September, booked 8 days in advance, depart on a Thursday or Monday and return on a Wednesday

Cheap 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 December 28, 2025.

This United Airlines deal was found by Cheapflights users on 12/27. 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.
Sun 12/286:00 pmICN - SEA
1 stop20h 07mUnited Airlines
Thu 1/15:54 pmSEA - ICN
1 stop18h 46mUnited Airlines
Deal found 12/27$567
This United Airlines deal was found by Cheapflights users on 12/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:00 pmICN - SEA
1 stop23h 59mUnited Airlines
Mon 1/1212:35 pmSEA - ICN
1 stop24h 05mUnited Airlines
Deal found 12/26$574
This United Airlines deal was found by Cheapflights users on 12/27. 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.
Sun 12/2812:45 pmICN - SEA
1 stop16h 42mUnited Airlines
Mon 1/1212:35 pmSEA - ICN
1 stop24h 05mUnited Airlines
Deal found 12/27$577
This Travelis deal was found by Cheapflights users on 12/27. 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 Travelis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:35 pmICN - SEA
Nonstop10h 10mHawaiian Airlines
Thu 1/11:40 pmSEA - ICN
Nonstop11h 55mHawaiian Airlines
Deal found 12/27$671
This FlightHub deal was found by Cheapflights users on 12/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/279:00 pmICN - SEA
Nonstop9h 55mAsiana Airlines
Sun 1/1112:10 amSEA - ICN
Nonstop12h 10mAsiana Airlines
Deal found 12/26$677
This Delta deal was found by Cheapflights users on 12/27. 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.
Sun 12/288:05 pmICN - SEA
Nonstop10h 15mDelta
Thu 1/13:30 pmSEA - ICN
1 stop33h 10mDelta
Deal found 12/27$696
This Korean Air deal was found by Cheapflights users on 12/26. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:05 pmICN - SEA
Nonstop10h 15mKorean Air
Mon 1/1211:00 amSEA - ICN
Nonstop11h 55mKorean Air
Deal found 12/26$738
This Delta deal was found by Cheapflights users on 12/26. 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.
Sat 12/278:05 pmICN - SEA
Nonstop10h 15mDelta
Mon 1/127:15 amSEA - ICN
1 stop17h 25mDelta
Deal found 12/26$873
This Flightnetwork deal was found by Cheapflights users on 12/27. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/287:40 pmGMP - SEA
1 stop31h 10mJapan Airlines
Thu 1/112:30 pmSEA - GMP
1 stop29h 25mJapan Airlines
Deal found 12/27$1,180
This ANA deal was found by Cheapflights users on 12/27. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/2812:25 pmGMP - SEA
1 stop17h 55mANA
Thu 1/15:54 pmSEA - GMP
2 stops24h 26mANA
Deal found 12/27$1,375
This Expedia deal was found by Cheapflights users on 12/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3012:25 pmGMP - SEA
2 stops23h 51mANA
Fri 1/93:45 pmSEA - GMP
1 stop33h 50mANA
Deal found 12/26$3,026
This Booking.com deal was found by Cheapflights users on 12/27. 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.
Wed 12/3112:25 pmGMP - SEA
1 stop17h 55mANA
Thu 1/89:55 amSEA - GMP
2 stops19h 35mANA
Deal found 12/27$3,072

Find 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 December 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$540
(Hanatour)

One-way from

$330
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$644

Good round-trip deal

$535 or less

Good one-way deal

$546 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. 8% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 28, 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 3/9

11:45 am-7:28 pm

2 stops23h 43m

Seattle/Tacoma Intl

Wed 3/18

7:15 am-3:15 pm

1 stop16h 00m

$568

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 2/5

12:45 pm-4:29 pm

2 stops20h 44m

Seattle/Tacoma Intl

Thu 2/26

8:30 am-5:40 am

2 stops28h 10m

$568

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 2/10

6:00 pm-3:44 pm

1 stop14h 44m

Seattle/Tacoma Intl

Tue 2/17

5:00 am-5:40 am

2 stops31h 40m

$569

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 5/17

11:30 am-10:39 am

1 stop15h 09m

Seattle/Tacoma Intl

Sun 8/2

5:00 pm-3:00 pm

2 stops30h 00m

$569

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 2/18

12:45 pm-4:21 pm

2 stops20h 36m

Seattle/Tacoma Intl

Thu 3/5

7:15 am-5:40 am

1 stop29h 25m

$569

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 1/30

8:35 pm-1:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Fri 2/13

1:40 pm-6:35 pm

Nonstop11h 55m

$691

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 1/23

12:45 pm-11:29 am

1 stop15h 44m

Seattle/Tacoma Intl

Thu 1/29

12:24 pm-5:40 am

2 stops24h 16m

$717

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 1/26

6:00 pm-9:15 pm

2 stops20h 15m

Seattle/Tacoma Intl

Mon 2/2

5:00 am-5:40 am

2 stops31h 40m

$718

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 2/14

12:45 pm-9:49 am

2 stops38h 04m

Seattle/Tacoma Intl

Sun 2/22

9:19 am-4:15 pm

1 stop37h 56m

$754

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Fri 1/16

12:25 pm-1:20 pm

1 stop17h 55m

Seattle/Tacoma Intl

Thu 1/29

9:55 am-10:30 pm

2 stops19h 35m

$876

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 38 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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seoul-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 December 26, 2025.

To ensure you get the cheapest price possible for a flight from Seoul to Seattle, you should look to book at least 8 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 $338). Flying from Seoul to Seattle in August is currently the most expensive (average of $667). 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 December 28, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seoul to Seattle as you normally would.

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 December 28, 2025.

The most flights from SEL to SEA are scheduled on a Saturday (11 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (4 on average).

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 December 28, 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
8.5
Very good
1,184 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Food

8.1

Overall

8.5

Comfort

8.3

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
8.5
Very good
1,184 reviews
Korean Air
8.5
Very good
1,184 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Food

8.1

Overall

8.5

Comfort

8.3

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
500 reviews
Korean Air
8.5
Very good
1,184 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Food

8.1

Overall

8.5

Comfort

8.3

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
11,547 reviews
Korean Air
8.5
Very good
1,184 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Food

8.1

Overall

8.5

Comfort

8.3

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
7.9
Good
8,021 reviews
Korean Air
8.5
Very good
1,184 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Food

8.1

Overall

8.5

Comfort

8.3

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
2,819 reviews
Korean Air
8.5
Very good
1,184 reviews

Crew

8.7

Boarding

8.5

Entertainment

8.2

Food

8.1

Overall

8.5

Comfort

8.3

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 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.

  • How long is the flight from Seoul to Seattle?

    United Airlines and ANA can get you from Seoul to Seattle in just under 17h 55m. Your travel time can differ by up to 5h 48m. Seoul and Seattle are separated by a distance of 5182 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, Hawaiian Airlines ($351), Asiana Airlines ($466), and Korean Air ($470) offers the cheapest pricing from Seoul to Seattle. You may be able to fly from Seoul to Seattle for 49% 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 Hawaiian Airlines, which is currently one of the cheapest options available, starting at $309. Air Canada flights start at $351 while deals on Asiana Airlines start at $405 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 (83%), Korean Air (83%) and Thai Airways (81%).

  • What are the cheapest flights from Seoul to Seattle?

    Looking for the cheapest flight from Seoul to Seattle? While on average our users pay $1,679, our data indicates the cheapest price to be $340. The most popular route (Incheon Intl - Seattle/Tacoma Intl), is priced around $567.

  • 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 $338). Flying from Seoul to Seattle in August is currently the most expensive (average of $667). 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
Tacoma
SeaTac
Lakewood
Ocean Shores
Olympia
Edmonds
Lynnwood
Renton
Puyallup
Kirkland
Kent
Tukwila
Cle Elum
Marysville
Fife
Aberdeen
Shoreline
Centralia
Federal Way
Chehalis

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 Portland flights
Busan to Seattle 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 December 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$352Average$866FlexibilityNo cancel feeOn-time85%
Asiana AirlinesCheapest$467Average$663FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$470Average$728FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$472Average$727FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$476Average$578FlexibilityNo cancel feeOn-time75%
DeltaCheapest$606Average$700FlexibilityNo cancel feeOn-timeN/A

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