NZ$740 Cheap Flights Seattle to Seoul (SEA-ICN)

View NZ$740 flight on Fri, 10 July 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 35% 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 for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Korean Air
Tue, 14 July - Mon, 20 July
SEA
Seattle
ICN
Seoul
NZ$1,854 Return, found 6 days ago
NZ$1,854
Return
found 6 days ago
Select Korean Air flight, departing Tue, 14 July from Seattle to Seoul, returning Mon, 20 July, priced at NZ$1,854 found 6 days ago
Korean Air
Tue, 14 July - Mon, 20 July
SEA
Seattle
ICN
Seoul
NZ$1,856 Return, found 6 days ago
NZ$1,856
Return
found 6 days ago
Select Korean Air flight, departing Tue, 14 July from Seattle to Seoul, returning Mon, 20 July, priced at NZ$1,856 found 6 days ago
Delta
Tue, 14 July - Mon, 20 July
SEA
Seattle
ICN
Seoul
NZ$1,937 Return, found 6 days ago
NZ$1,937
Return
found 6 days ago
Select Delta flight, departing Tue, 14 July from Seattle to Seoul, returning Mon, 20 July, priced at NZ$1,937 found 6 days ago
Delta
Tue, 14 July - Mon, 20 July
SEA
Seattle
ICN
Seoul
NZ$1,998 Return, found 6 days ago
NZ$1,998
Return
found 6 days ago
Select Delta flight, departing Tue, 14 July from Seattle to Seoul, returning Mon, 20 July, priced at NZ$1,998 found 6 days ago
Cathay Pacific
Sat, 3 Oct - Sun, 11 Oct
SEA
Seattle
ICN
Seoul
NZ$2,050 Return, found 5 days ago
NZ$2,050
Return
found 5 days ago
Select Cathay Pacific flight, departing Sat, 3 Oct from Seattle to Seoul, returning Sun, 11 Oct, priced at NZ$2,050 found 5 days ago
Korean Air
Tue, 14 July - Mon, 20 July
SEA
Seattle
ICN
Seoul
NZ$2,066 Return, found 6 days ago
NZ$2,066
Return
found 6 days ago
Select Korean Air flight, departing Tue, 14 July from Seattle to Seoul, returning Mon, 20 July, priced at NZ$2,066 found 6 days ago
Korean Air
Tue, 14 July - Mon, 20 July
SEA
Seattle
ICN
Seoul
NZ$2,068 Return, found 6 days ago
NZ$2,068
Return
found 6 days ago
Select Korean Air flight, departing Tue, 14 July from Seattle to Seoul, returning Mon, 20 July, priced at NZ$2,068 found 6 days ago
Korean Air
Tue, 14 July - Mon, 20 July
SEA
Seattle
ICN
Seoul
NZ$2,133 Return, found 6 days ago
NZ$2,133
Return
found 6 days ago
Select Korean Air flight, departing Tue, 14 July from Seattle to Seoul, returning Mon, 20 July, priced at NZ$2,133 found 6 days ago
Philippine Airlines
Thu, 14 May - Thu, 21 May
SEA
Seattle
ICN
Seoul
NZ$2,157 Return, found 2 days ago
NZ$2,157
Return
found 2 days ago
Select Philippine Airlines flight, departing Thu, 14 May from Seattle to Seoul, returning Thu, 21 May, priced at NZ$2,157 found 2 days ago
Asiana Airlines
Tue, 14 July - Mon, 20 July
SEA
Seattle
ICN
Seoul
NZ$2,175 Return, found 6 days ago
NZ$2,175
Return
found 6 days ago
Select Asiana Airlines flight, departing Tue, 14 July from Seattle to Seoul, returning Mon, 20 July, priced at NZ$2,175 found 6 days ago

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 NZ$1,854. 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
NZ$1,854
Distance
8326 km
Average flight time
27 hours 56 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 NZ$740 and roundtrip prices from NZ$1,854. 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

Explore a world of travel with Expedia

*Available to Expedia members.