S$648 Cheap Flights from Seoul to Seattle

View S$648 flight on Wed, 10 Sep, 2025Opens in a new window

Popular airlines from Seoul to Seattle, WA (SEA-Seattle - Tacoma Intl.)

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Cheap Flights from Seoul to Seattle (SEL-SEA)

Prices were available within the past 7 days and start at S$648 for one-way flights and S$759 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 25 Sep - Sun, 19 Oct
ICN
Seoul
SEA
Seattle
S$759 Return, found 5 days ago
S$759
Return
found 5 days ago
Select United flight, departing Thu, 25 Sep from Seoul to Seattle, returning Sun, 19 Oct, priced at S$759 found 5 days ago
Hawaiian Airlines
Fri, 10 Oct - Sun, 19 Oct
ICN
Seoul
SEA
Seattle
S$762 Return, found 12 hours ago
S$762
Return
found 12 hours ago
Select Hawaiian Airlines flight, departing Fri, 10 Oct from Seoul to Seattle, returning Sun, 19 Oct, priced at S$762 found 12 hours ago
United
Thu, 11 Sep - Wed, 17 Sep
ICN
Seoul
SEA
Seattle
S$767 Return, found 3 days ago
S$767
Return
found 3 days ago
Select United flight, departing Thu, 11 Sep from Seoul to Seattle, returning Wed, 17 Sep, priced at S$767 found 3 days ago
Hawaiian Airlines
Fri, 10 Oct - Sun, 19 Oct
ICN
Seoul
SEA
Seattle
S$769 Return, found 12 hours ago
S$769
Return
found 12 hours ago
Select Hawaiian Airlines flight, departing Fri, 10 Oct from Seoul to Seattle, returning Sun, 19 Oct, priced at S$769 found 12 hours ago
Delta
Thu, 25 Sep - Sun, 19 Oct
ICN
Seoul
SEA
Seattle
S$770 Return, found 5 days ago
S$770
Return
found 5 days ago
Select Delta flight, departing Thu, 25 Sep from Seoul to Seattle, returning Sun, 19 Oct, priced at S$770 found 5 days ago
Air Canada
Thu, 11 Sep - Wed, 17 Sep
ICN
Seoul
SEA
Seattle
S$772 Return, found 3 days ago
S$772
Return
found 3 days ago
Select Air Canada flight, departing Thu, 11 Sep from Seoul to Seattle, returning Wed, 17 Sep, priced at S$772 found 3 days ago
Air Canada
Fri, 10 Oct - Sun, 19 Oct
ICN
Seoul
SEA
Seattle
S$774 Return, found 12 hours ago
S$774
Return
found 12 hours ago
Select Air Canada flight, departing Fri, 10 Oct from Seoul to Seattle, returning Sun, 19 Oct, priced at S$774 found 12 hours ago
Delta
Thu, 25 Sep - Sun, 19 Oct
ICN
Seoul
SEA
Seattle
S$775 Return, found 5 days ago
S$775
Return
found 5 days ago
Select Delta flight, departing Thu, 25 Sep from Seoul to Seattle, returning Sun, 19 Oct, priced at S$775 found 5 days ago
Delta
Tue, 23 Dec - Sat, 3 Jan
ICN
Seoul
SEA
Seattle
S$778 Return, found 2 days ago
S$778
Return
found 2 days ago
Select Delta flight, departing Tue, 23 Dec from Seoul to Seattle, returning Sat, 3 Jan, priced at S$778 found 2 days ago
Korean Air
Thu, 25 Sep - Sun, 19 Oct
ICN
Seoul
SEA
Seattle
S$779 Return, found 5 days ago
S$779
Return
found 5 days ago
Select Korean Air flight, departing Thu, 25 Sep from Seoul to Seattle, returning Sun, 19 Oct, priced at S$779 found 5 days ago
Seoul to Seattle route information
Origin airport
Incheon Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Japan Airlines, Korean Air, Lufthansa, United, WestJet
Return price
S$758
Distance
8326 km

Flights from Incheon to Seattle

When looking for plane tickets from Incheon to Seattle, the ease and convenience of using Expedia simply can’t be beat. With tons of departure points and flights options from the top airline carriers, Expedia gives you the widest array of cheap flights to Seattle. Look for SEL to SEA airfare with the assurance that you have the largest online travel agency working for you.

Expedia lets you search across the largest number of airlines and Seattle 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 Incheon Seattle 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 Incheon to Seattle trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Seattle 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 Incheon to Seattle 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 Seoul (SEL-All Airports) to Sea-Tac Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price quoted for a round-trip journey between Seoul (SEL-All Airports) and Seattle - Tacoma Intl. Airport (SEA) was S$759. Fares this cheap don’t stick around for long, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seoul (SEL-All Airports) to Sea-Tac Airport?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the easy instructions on our Customer Service Portal.
How do I find cheap flights from Seoul (SEL-All Airports) to SEA 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 Seoul (SEL-All Airports) to SEA flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Seoul (SEL-All Airports) to Sea-Tac Airport?
The distance is around 8,400 kilometres, so pack your carry-on bag with whatever you need to make your journey comfortable. Not sure what to take on board your South Korea to SeaTac flight? Earplugs, a sleep mask and a neck pillow are a few essentials.
Which airlines fly direct from Seoul (SEL-All Airports) to Sea-Tac Airport?
Delta Air Lines (DL) is a top choice. It operates 39 flights from Seoul (SEL-All Airports) to SEA each month. You could also have a look at the fares on offer with Korean Air (KE). It operates 21 monthly flights between South Korea and SeaTac.
Are Seoul (SEL-All Airports) to SEA flight tickets cheaper when they're purchased at the last minute?
Last-minute planners can occasionally find a bargain, with some of the cheapest fares from Seoul (SEL-All Airports) to Sea-Tac Airport cropping up a few weeks before the date of departure. If you’d rather plan ahead, Expedia compares and updates the best flight deals continuously — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines release prices that far in advance.

Explore a world of travel with Expedia

Seoul Airports

Seoul

Incheon Intl. to Seattle
S$758.10
*Available to Expedia members.