S$548 Cheap Flights from Seattle to Seoul

View S$548 flight on Sun, 16 Nov, 2025Opens in a new window

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

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

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

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seattle to Seoul (SEA-ICN)

Prices were available within the past 7 days and start at S$548 for one-way flights and S$1,062 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, 15 Nov - Sat, 22 Nov
SEA
Seattle
ICN
Seoul
S$1,062 Return, found 4 days ago
S$1,062
Return
found 4 days ago
Select United flight, departing Sat, 15 Nov from Seattle to Seoul, returning Sat, 22 Nov, priced at S$1,062 found 4 days ago
Cathay Pacific
Wed, 13 May - Tue, 19 May
SEA
Seattle
ICN
Seoul
S$1,063 Return, found 5 days ago
S$1,063
Return
found 5 days ago
Select Cathay Pacific flight, departing Wed, 13 May from Seattle to Seoul, returning Tue, 19 May, priced at S$1,063 found 5 days ago
United
Sat, 15 Nov - Sat, 22 Nov
SEA
Seattle
ICN
Seoul
S$1,069 Return, found 4 days ago
S$1,069
Return
found 4 days ago
Select United flight, departing Sat, 15 Nov from Seattle to Seoul, returning Sat, 22 Nov, priced at S$1,069 found 4 days ago
Delta
Thu, 23 Oct - Wed, 5 Nov
SEA
Seattle
ICN
Seoul
S$1,073 Return, found 5 hours ago
S$1,073
Return
found 5 hours ago
Select Delta flight, departing Thu, 23 Oct from Seattle to Seoul, returning Wed, 5 Nov, priced at S$1,073 found 5 hours ago
Delta
Thu, 23 Oct - Wed, 5 Nov
SEA
Seattle
ICN
Seoul
S$1,074 Return, found 5 hours ago
S$1,074
Return
found 5 hours ago
Select Delta flight, departing Thu, 23 Oct from Seattle to Seoul, returning Wed, 5 Nov, priced at S$1,074 found 5 hours ago
Korean Air
Thu, 23 Oct - Wed, 5 Nov
SEA
Seattle
ICN
Seoul
S$1,075 Return, found 5 hours ago
S$1,075
Return
found 5 hours ago
Select Korean Air flight, departing Thu, 23 Oct from Seattle to Seoul, returning Wed, 5 Nov, priced at S$1,075 found 5 hours ago
Korean Air
Thu, 23 Oct - Wed, 5 Nov
SEA
Seattle
ICN
Seoul
S$1,076 Return, found 5 hours ago
S$1,076
Return
found 5 hours ago
Select Korean Air flight, departing Thu, 23 Oct from Seattle to Seoul, returning Wed, 5 Nov, priced at S$1,076 found 5 hours ago
United
Sat, 15 Nov - Sat, 22 Nov
SEA
Seattle
ICN
Seoul
S$1,077 Return, found 4 days ago
S$1,077
Return
found 4 days ago
Select United flight, departing Sat, 15 Nov from Seattle to Seoul, returning Sat, 22 Nov, priced at S$1,077 found 4 days ago
Delta
Thu, 23 Oct - Wed, 5 Nov
SEA
Seattle
ICN
Seoul
S$1,082 Return, found 5 hours ago
S$1,082
Return
found 5 hours ago
Select Delta flight, departing Thu, 23 Oct from Seattle to Seoul, returning Wed, 5 Nov, priced at S$1,082 found 5 hours ago
Air Canada
Sun, 30 Nov - Sat, 20 Dec
SEA
Seattle
ICN
Seoul
S$1,084 Return, found 6 days ago
S$1,084
Return
found 6 days ago
Select Air Canada flight, departing Sun, 30 Nov from Seattle to Seoul, returning Sat, 20 Dec, priced at S$1,084 found 6 days ago

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

September is typically the cheapest month to fly

From S$923 - S$1,143 per traveller.
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, Hawaiian Airlines, Korean Air, United
Return price
S$1,061
Distance
8326 km
Average flight time
27 hours 51 mins

Flights from Seattle to Incheon

There are several airlines that operate frequent flights from Seattle (SEA) to Seoul (ICN) including

The earliest flight leaves Seattle Tacoma Intl. Airport at 11:51 and arrives at Incheon Intl. Airport at 16:00. The last flight of the day departs Seattle at 14:40 and arrives at Seoul at 18:20.

The flight distance from Seattle to Seoul is about 8418 km, the shortest flight is 11 hours 20 minutes with WestJet.

Expedia lets you search across the largest number of airlines and Incheon flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Seattle Incheon flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Seattle to Incheon trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Incheon flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Seattle to Incheon with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

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 S$1,062. 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.

Explore a world of travel with Expedia

*Available to Expedia members.