฿14,385 Cheap Flights from Seattle (SEA) to Seoul (ICN)

View ฿14,385 flight on Sat, 11 Jul 2026Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ฿14,385 for one-way flights and ฿37,930 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cathay Pacific
Wed, 13 May - Wed, 20 May
SEA
Seattle
ICN
Seoul
฿37,930 Return, found 2 hours ago
฿37,930
Return
found 2 hours ago
Select Cathay Pacific flight, departing Wed, 13 May from Seattle to Seoul, returning Wed, 20 May, priced at ฿37,930 found 2 hours ago
EVA Airways
Tue, 6 Oct - Sat, 24 Oct
SEA
Seattle
ICN
Seoul
฿40,205 Return, found 6 days ago
฿40,205
Return
found 6 days ago
Select EVA Airways flight, departing Tue, 6 Oct from Seattle to Seoul, returning Sat, 24 Oct, priced at ฿40,205 found 6 days ago
Delta
Fri, 7 Aug - Tue, 18 Aug
SEA
Seattle
ICN
Seoul
฿40,305 Return, found 4 days ago
฿40,305
Return
found 4 days ago
Select Delta flight, departing Fri, 7 Aug from Seattle to Seoul, returning Tue, 18 Aug, priced at ฿40,305 found 4 days ago
Korean Air
Fri, 7 Aug - Tue, 18 Aug
SEA
Seattle
ICN
Seoul
฿40,335 Return, found 4 days ago
฿40,335
Return
found 4 days ago
Select Korean Air flight, departing Fri, 7 Aug from Seattle to Seoul, returning Tue, 18 Aug, priced at ฿40,335 found 4 days ago
Korean Air
Fri, 7 Aug - Tue, 18 Aug
SEA
Seattle
ICN
Seoul
฿40,365 Return, found 4 days ago
฿40,365
Return
found 4 days ago
Select Korean Air flight, departing Fri, 7 Aug from Seattle to Seoul, returning Tue, 18 Aug, priced at ฿40,365 found 4 days ago
Korean Air
Tue, 6 Oct - Sat, 24 Oct
SEA
Seattle
ICN
Seoul
฿40,395 Return, found 6 days ago
฿40,395
Return
found 6 days ago
Select Korean Air flight, departing Tue, 6 Oct from Seattle to Seoul, returning Sat, 24 Oct, priced at ฿40,395 found 6 days ago
Delta
Tue, 6 Oct - Sat, 24 Oct
SEA
Seattle
ICN
Seoul
฿40,490 Return, found 6 days ago
฿40,490
Return
found 6 days ago
Select Delta flight, departing Tue, 6 Oct from Seattle to Seoul, returning Sat, 24 Oct, priced at ฿40,490 found 6 days ago
Korean Air
Tue, 6 Oct - Sat, 24 Oct
SEA
Seattle
ICN
Seoul
฿40,520 Return, found 6 days ago
฿40,520
Return
found 6 days ago
Select Korean Air flight, departing Tue, 6 Oct from Seattle to Seoul, returning Sat, 24 Oct, priced at ฿40,520 found 6 days ago
Delta
Tue, 6 Oct - Sat, 24 Oct
SEA
Seattle
ICN
Seoul
฿40,550 Return, found 6 days ago
฿40,550
Return
found 6 days ago
Select Delta flight, departing Tue, 6 Oct from Seattle to Seoul, returning Sat, 24 Oct, priced at ฿40,550 found 6 days ago
Philippine Airlines
Tue, 6 Oct - Sat, 24 Oct
SEA
Seattle
ICN
Seoul
฿41,165 Return, found 6 days ago
฿41,165
Return
found 6 days ago
Select Philippine Airlines flight, departing Tue, 6 Oct from Seattle to Seoul, returning Sat, 24 Oct, priced at ฿41,165 found 6 days ago

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

October is typically the cheapest month to fly

From ฿23,620 - ฿32,368 per traveller.

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 ฿37,930. 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.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Incheon Intl.
Return price
฿37,930
Distance
8326 km
Average flight time
27 hours 57 mins

Book with confidence

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 ฿14,385 and roundtrip prices from ฿37,930. 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.
Perfect flights from Seattle to Seoul
*Available to Expedia members.