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$395+ 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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SEL
Jul 7 — Jul 141
Mon 7/7
Mon 7/14
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Seoul are usually found in February or January, booked 44 days in advance, depart on a Monday or Wednesday 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 July 2, 2025.

Round-trip from

$828
(FlightHub)

One-way from

$395
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,338

Good round-trip deal

$774 or less

Good one-way deal

$427 or less
From Seattle/Tacoma Intl to Seoul (SEL)
Search Deals
One-way flight from Seattle/Tacoma Intl to Seoul (SEL)
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($154 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Seoul (SEL).
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Seoul (SEL).
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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 July 2, 2025.

This FlightHub deal was found by Cheapflights users on 7/1. 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.
Thu 8/2810:00 amSEA - ICN
1 stop14h 05mMultiple Airlines
Sat 9/610:40 amICN - SEA
2 stops19h 36mMultiple Airlines
Deal found 7/1$828
This Air Canada deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/207:15 pmSEA - ICN
1 stop28h 50mAir Canada
Mon 12/16:55 pmICN - SEA
1 stop12h 31mAir Canada
Deal found 7/2$836
This Gotogate deal was found by Cheapflights users on 7/1. 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 9/261:15 pmSEA - ICN
2 stops37h 30mWestJet
Fri 10/108:45 pmICN - SEA
1 stop32h 14mWestJet
Deal found 7/1$848
This oojo deal was found by Cheapflights users on 6/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/131:10 amSEA - ICN
1 stop26h 25mChina Airlines
Tue 10/2812:25 pmICN - SEA
1 stop22h 50mChina Airlines
Deal found 6/30$870
This FlightHub deal was found by Cheapflights users on 7/1. 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.
Mon 9/157:20 amSEA - GMP
2 stops35h 40mChina Eastern
Thu 9/188:50 pmGMP - SEA
2 stops36h 09mChina Eastern
Deal found 7/1$936
This Orbitz deal was found by Cheapflights users on 6/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2210:05 amSEA - GMP
2 stops35h 50mMultiple Airlines
Fri 11/289:00 amGMP - SEA
2 stops30h 06mMultiple Airlines
Deal found 6/30$948
This oojo deal was found by Cheapflights users on 7/2. 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.
Thu 9/251:30 amSEA - GMP
1 stop19h 20mEVA Air
Fri 10/101:50 pmGMP - SEA
1 stop21h 40mEVA Air
Deal found 7/2$1,058
This Gurufare deal was found by Cheapflights users on 7/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/254:30 pmSEA - GMP
1 stop34h 05mANA
Sun 11/27:45 amGMP - SEA
2 stops28h 31mANA
Deal found 7/2$1,172

Cheapflights Fare Finder

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 July 2, 2025.
Use the filters below to find and compare flights from Seattle to Seoul that are best for you.

Fly from

Seattle

Fly to

Seoul

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 8/28

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

Sat 9/6

10:40 am-2:16 pm

2 stops19h 36m

$828

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 10/20

7:15 pm-4:05 pm

1 stop28h 50m

Incheon Intl

Mon 12/1

6:55 pm-2:26 pm

1 stop12h 31m

$836

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 9/26

1:15 pm-6:45 pm

2 stops37h 30m

Incheon Intl

Fri 10/10

8:45 pm-12:59 pm

1 stop32h 14m

$848

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 10/13

1:10 am-7:35 pm

1 stop26h 25m

Incheon Intl

Tue 10/28

12:25 pm-7:15 pm

1 stop22h 50m

$870

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 9/15

7:20 am-11:00 am

2 stops35h 40m

Seoul Gimpo Intl

Thu 9/18

8:50 pm-4:59 pm

2 stops36h 09m

$936

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sat 11/22

10:05 am-2:55 pm

2 stops35h 50m

Seoul Gimpo Intl

Fri 11/28

9:00 am-10:06 pm

2 stops30h 06m

$948

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Thu 9/25

1:30 am-12:50 pm

1 stop19h 20m

Seoul Gimpo Intl

Fri 10/10

1:50 pm-7:30 pm

1 stop21h 40m

$1,058

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sat 10/25

4:30 pm-6:35 pm

1 stop34h 05m

Seoul Gimpo Intl

Sun 11/2

7:45 am-8:16 pm

2 stops28h 31m

$1,172

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 9/3

3:39 pm-9:35 pm

2 stops37h 56m

$395

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 9/3

7:05 am-6:45 pm

1 stop19h 40m

$418

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 15 results
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The best insider tips for Seattle to Seoul flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Seoul trip
Airlines
Korean Air

Korean Air offers lie-flat seats in business class with a 75” pitch and 21” width.


Economy passengers enjoy a 33”-34” seat pitch, more spacious than many competitors.

Read more about Korean Airby Yulia Denisyuk
Asiana Airlines

Asiana’s A380 business suite features a fully flat 81” bed and 32” entertainment screen.


Economy class on A350 offers extra legroom with 36” pitch in Economy Smartium seats.

Read more about Asiana Airlinesby Marisa Garcia
Airports
SEA

Use SEA Spot Saver for free security screening appointments, reducing wait times. Book online a few days before your flight.

Read more about SEAby Brandon Schultz
ICN

The AREX express train offers a quick 40-50 minute ride from ICN to Seoul Station, ideal for reaching the city efficiently.

Read more about ICNby Gabriel Leigh
Our travel experts
Yulia Denisyuk

Yulia Denisyuk

Expert on Korean Air

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more
Marisa Garcia

Marisa Garcia

Expert on Asiana Airlines

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on ICN

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

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.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Seoul

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 June 27, 2025.

Booking 44 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, February is the cheapest month in which you can book a flight from Seattle to Seoul (average of $998). Flying from Seattle to Seoul in December is currently the most expensive (average of $1,635). 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 July 2, 2025.

It’s optimal to fly from Seattle to Seoul in the evening. By choosing this option you can save up to 44% on the cost of your flight, compared to a flight in the afternoon.

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 Wednesday evenings when fares are most often at their lowest. Friday afternoons 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 July 2, 2025.

The most flights from SEA to SEL are scheduled on a Tuesday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

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 July 2, 2025.
Peruse reviews from past customers who have flown with EVA Air, ANA, and Japan Airlines from Seattle to Seoul 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.
EVA Air
8.4
Very good
1,214 reviews

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
EVA Air
8.4
Very good
1,214 reviews
EVA Air
8.4
Very good
1,214 reviews

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
ANA
8.4
Very good
892 reviews
EVA Air
8.4
Very good
1,214 reviews

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
Japan Airlines
8.3
Very good
1,505 reviews
EVA Air
8.4
Very good
1,214 reviews

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
China Airlines
8.3
Very good
747 reviews
EVA Air
8.4
Very good
1,214 reviews

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.
WestJet
7.2
Good
2,912 reviews
EVA Air
8.4
Very good
1,214 reviews

Crew

8.6

Comfort

8.3

Entertainment

8.0

Overall

8.4

Boarding

8.4

Food

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

TPE - SEA

The flight and crew were exceptional as always when I fly with EVA.

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 10 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?

    Air Canada, at $846, was found to be the cheapest airline from Seattle to Seoul.Alternate airlines to your destination round-trip include WestJet and China Airlines. Air Canada is priced at 28% 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 WestJet, which is currently one of the cheapest options available, starting at $418. Air Canada flights start at $464 while deals on EVA Air start at $575 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 (73%), Korean Air (69%) or Thai Airways (32%) 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 $2,127, our data indicates the cheapest price to be $365. The most popular route (Seattle/Tacoma Intl - Incheon Intl), is priced around $667.

  • 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, February is the cheapest month in which you can book a flight from Seattle to Seoul (average of $998). Flying from Seattle to Seoul in December is currently the most expensive (average of $1,635). 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 10 airlines flying from Seattle to Seoul

Discover the top 10 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 July 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$167Average$1,329FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$182Average$1,099FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$657Average$974FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$763Average$1,550FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$814Average$917FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$886Average$1,057FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$908Average$1,182FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$966Average$1,248FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$970Average$1,207FlexibilityNo cancel feeOn-time77%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%

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