S$555 Cheap Flights from Seattle to Seoul

View S$555 flight on Sat, 4 Oct, 2025Opens 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 to Seoul (SEA-ICN)

Prices were available within the past 7 days and start at S$555 for one-way flights and S$1,025 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, 5 Nov - Mon, 10 Nov
SEA
Seattle
ICN
Seoul
S$1,025 Return, found 5 days ago
S$1,025
Return
found 5 days ago
Select Air Canada flight, departing Wed, 5 Nov from Seattle to Seoul, returning Mon, 10 Nov, priced at S$1,025 found 5 days ago
Air Canada
Thu, 13 Nov - Wed, 19 Nov
SEA
Seattle
ICN
Seoul
S$1,028 Return, just found
S$1,028
Return
just found
Select Air Canada flight, departing Thu, 13 Nov from Seattle to Seoul, returning Wed, 19 Nov, priced at S$1,028 just found
Delta
Thu, 13 Nov - Wed, 19 Nov
SEA
Seattle
ICN
Seoul
S$1,072 Return, just found
S$1,072
Return
just found
Select Delta flight, departing Thu, 13 Nov from Seattle to Seoul, returning Wed, 19 Nov, priced at S$1,072 just found
Delta
Sat, 4 Oct - Wed, 8 Oct
SEA
Seattle
ICN
Seoul
S$1,073 Return, found 4 days ago
S$1,073
Return
found 4 days ago
Select Delta flight, departing Sat, 4 Oct from Seattle to Seoul, returning Wed, 8 Oct, priced at S$1,073 found 4 days ago
Delta
Mon, 29 Sep - Tue, 14 Oct
SEA
Seattle
ICN
Seoul
S$1,080 Return, found 6 days ago
S$1,080
Return
found 6 days ago
Select Delta flight, departing Mon, 29 Sep from Seattle to Seoul, returning Tue, 14 Oct, priced at S$1,080 found 6 days ago
Hawaiian Airlines
Wed, 15 Oct - Thu, 30 Oct
SEA
Seattle
ICN
Seoul
S$1,080 Return, found 6 days ago
S$1,080
Return
found 6 days ago
Select Hawaiian Airlines flight, departing Wed, 15 Oct from Seattle to Seoul, returning Thu, 30 Oct, priced at S$1,080 found 6 days ago
United
Thu, 13 Nov - Wed, 19 Nov
SEA
Seattle
ICN
Seoul
S$1,080 Return, just found
S$1,080
Return
just found
Select United flight, departing Thu, 13 Nov from Seattle to Seoul, returning Wed, 19 Nov, priced at S$1,080 just found
Delta
Sat, 4 Oct - Wed, 8 Oct
SEA
Seattle
ICN
Seoul
S$1,081 Return, found 4 days ago
S$1,081
Return
found 4 days ago
Select Delta flight, departing Sat, 4 Oct from Seattle to Seoul, returning Wed, 8 Oct, priced at S$1,081 found 4 days ago
Korean Air
Mon, 13 Oct - Tue, 28 Oct
SEA
Seattle
ICN
Seoul
S$1,082 Return, found 6 days ago
S$1,082
Return
found 6 days ago
Select Korean Air flight, departing Mon, 13 Oct from Seattle to Seoul, returning Tue, 28 Oct, priced at S$1,082 found 6 days ago
Korean Air
Sat, 4 Oct - Wed, 8 Oct
SEA
Seattle
ICN
Seoul
S$1,083 Return, found 4 days ago
S$1,083
Return
found 4 days ago
Select Korean Air flight, departing Sat, 4 Oct from Seattle to Seoul, returning Wed, 8 Oct, priced at S$1,083 found 4 days ago

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

September is typically the cheapest month to fly

From S$991 - S$1,443 per traveller.

Graph displaying average flight prices per month

Seattle to Seoul route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Incheon Intl.
Airlines serving
Asiana Airlines, Cathay Pacific, Delta, EVA Airways, Hawaiian Airlines, Korean Air, United
Return price
S$1,024
Distance
8326 km
Average flight time
27 hours 26 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$1,025. 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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