฿13,860 Cheap Flights from Seattle (SEA) to Seoul (ICN)

View ฿13,860 flight on Tue, 5 May 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Incheon Intl. Airport (ICN)

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Cheap Flights from Seattle (SEA) to Seoul (ICN)

Prices were available within the past 7 days and start at ฿13,860 for one-way flights and ฿24,580 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Tue, 10 Feb - Tue, 10 Mar
SEA
Seattle
ICN
Seoul
฿24,580 Return, found 16 hours ago
฿24,580
Return
found 16 hours ago
Select Air Canada flight, departing Tue, 10 Feb from Seattle to Seoul, returning Tue, 10 Mar, priced at ฿24,580 found 16 hours ago
Air Canada
Wed, 11 Feb - Tue, 24 Feb
SEA
Seattle
ICN
Seoul
฿24,975 Return, found 2 days ago
฿24,975
Return
found 2 days ago
Select Air Canada flight, departing Wed, 11 Feb from Seattle to Seoul, returning Tue, 24 Feb, priced at ฿24,975 found 2 days ago
Air Canada
Tue, 10 Feb - Tue, 10 Mar
SEA
Seattle
ICN
Seoul
฿25,225 Return, found 16 hours ago
฿25,225
Return
found 16 hours ago
Select Air Canada flight, departing Tue, 10 Feb from Seattle to Seoul, returning Tue, 10 Mar, priced at ฿25,225 found 16 hours ago
United
Tue, 10 Feb - Tue, 10 Mar
SEA
Seattle
ICN
Seoul
฿25,555 Return, found 16 hours ago
฿25,555
Return
found 16 hours ago
Select United flight, departing Tue, 10 Feb from Seattle to Seoul, returning Tue, 10 Mar, priced at ฿25,555 found 16 hours ago
Air Canada
Wed, 11 Feb - Tue, 24 Feb
SEA
Seattle
ICN
Seoul
฿25,565 Return, found 2 days ago
฿25,565
Return
found 2 days ago
Select Air Canada flight, departing Wed, 11 Feb from Seattle to Seoul, returning Tue, 24 Feb, priced at ฿25,565 found 2 days ago
Delta
Tue, 10 Feb - Tue, 10 Mar
SEA
Seattle
ICN
Seoul
฿25,695 Return, found 16 hours ago
฿25,695
Return
found 16 hours ago
Select Delta flight, departing Tue, 10 Feb from Seattle to Seoul, returning Tue, 10 Mar, priced at ฿25,695 found 16 hours ago
Korean Air
Tue, 10 Feb - Tue, 10 Mar
SEA
Seattle
ICN
Seoul
฿25,725 Return, found 16 hours ago
฿25,725
Return
found 16 hours ago
Select Korean Air flight, departing Tue, 10 Feb from Seattle to Seoul, returning Tue, 10 Mar, priced at ฿25,725 found 16 hours ago
Korean Air
Tue, 10 Feb - Tue, 10 Mar
SEA
Seattle
ICN
Seoul
฿25,755 Return, found 16 hours ago
฿25,755
Return
found 16 hours ago
Select Korean Air flight, departing Tue, 10 Feb from Seattle to Seoul, returning Tue, 10 Mar, priced at ฿25,755 found 16 hours ago
Korean Air
Tue, 10 Feb - Tue, 10 Mar
SEA
Seattle
ICN
Seoul
฿25,785 Return, found 16 hours ago
฿25,785
Return
found 16 hours ago
Select Korean Air flight, departing Tue, 10 Feb from Seattle to Seoul, returning Tue, 10 Mar, priced at ฿25,785 found 16 hours ago
Asiana Airlines
Sun, 15 Feb - Sun, 22 Feb
SEA
Seattle
ICN
Seoul
฿28,165 Return, found 1 day ago
฿28,165
Return
found 1 day ago
Select Asiana Airlines flight, departing Sun, 15 Feb from Seattle to Seoul, returning Sun, 22 Feb, priced at ฿28,165 found 1 day ago

Find the cheapest month to fly from Seattle (SEA) to Seoul (ICN)

November is typically the cheapest month to fly

From ฿22,429 - ฿27,008 per traveller.
Flight from Seattle to Seoul route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Incheon Intl.
Airlines serving
Air Canada, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Korean Air, Philippine Airlines, United
Return price
฿24,580
Distance
8326 km
Average flight time
29 hours 1 min

Perfect flights from Seattle to Seoul

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Seoul. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to Incheon Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿13,860 and roundtrip prices from ฿24,580. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Incheon Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Seoul.

Frequently asked questions

How much is a flight from SEA to Incheon Airport?
The lowest price advertised for a round-trip flight from SEA to ICN is ฿24,580. But you better get a move on. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to Incheon Intl. Airport (ICN)?
The majority of flights can be cancelled online, but whether or not you incur a fee differs between airlines. If you do have to cancel your break, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to Incheon Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for SEA to ICN flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Sea-Tac Airport to Incheon Intl. Airport (ICN)?
SeaTac to South Korea is around 8,400 kilometres, so get ready to spend quite a while in the air. Don't forget to pack all the essentials, from your eye mask to your earphones. Throw in a few snacks to munch on throughout your journey too.
Which airlines fly direct from SEA to Incheon Intl. Airport (ICN)?
A leading airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Incheon Airport is Delta Air Lines (DL). It offers 39 flights a month. Offering 21 flights every month on this route, Korean Air (KE) is another good option.
Are Sea-Tac Airport to Incheon Airport flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Seattle - Tacoma Intl. Airport (SEA) to ICN are available up to a year before departure on Expedia. And although you may pick up fantastic last-minute deals, it's not something you should count on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid landing the dreaded middle seat! We're constantly updating our fares to bring you the biggest bargains, so keep checking in for all the latest specials.
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