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

View AU$499 flight on Tue, 28 Apr 2026Opens in a new window

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

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

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.

Air Canada
Wed, 9 Sept - Mon, 21 Sept
ICN
Seoul
SEA
Seattle
AU$684 Return, found 6 days ago
AU$684
Return
found 6 days ago
Select Air Canada flight, departing Wed, 9 Sept from Seoul to Seattle, returning Mon, 21 Sept, priced at AU$684 found 6 days ago
Alaska Airlines
Mon, 1 June - Mon, 29 June
ICN
Seoul
SEA
Seattle
AU$956 Return, found 2 hours ago
AU$956
Return
found 2 hours ago
Select Alaska Airlines flight, departing Mon, 1 June from Seoul to Seattle, returning Mon, 29 June, priced at AU$956 found 2 hours ago
Hawaiian Airlines
Sat, 4 Apr - Sat, 18 Apr
ICN
Seoul
SEA
Seattle
AU$957 Return, found 2 days ago
AU$957
Return
found 2 days ago
Select Hawaiian Airlines flight, departing Sat, 4 Apr from Seoul to Seattle, returning Sat, 18 Apr, priced at AU$957 found 2 days ago
Asiana Airlines
Sun, 10 May - Tue, 19 May
ICN
Seoul
SEA
Seattle
AU$985 Return, found 4 days ago
AU$985
Return
found 4 days ago
Select Asiana Airlines flight, departing Sun, 10 May from Seoul to Seattle, returning Tue, 19 May, priced at AU$985 found 4 days ago
Korean Air
Mon, 1 June - Mon, 29 June
ICN
Seoul
SEA
Seattle
AU$985 Return, found 2 hours ago
AU$985
Return
found 2 hours ago
Select Korean Air flight, departing Mon, 1 June from Seoul to Seattle, returning Mon, 29 June, priced at AU$985 found 2 hours ago
Delta
Mon, 1 June - Mon, 29 June
ICN
Seoul
SEA
Seattle
AU$985 Return, found 2 hours ago
AU$985
Return
found 2 hours ago
Select Delta flight, departing Mon, 1 June from Seoul to Seattle, returning Mon, 29 June, priced at AU$985 found 2 hours ago
United
Wed, 9 Sept - Mon, 21 Sept
ICN
Seoul
SEA
Seattle
AU$1,011 Return, found 6 days ago
AU$1,011
Return
found 6 days ago
Select United flight, departing Wed, 9 Sept from Seoul to Seattle, returning Mon, 21 Sept, priced at AU$1,011 found 6 days ago
Jeju Air
Mon, 11 May - Mon, 18 May
GMP
Seoul
SEA
Seattle
AU$1,096 Return, found 3 days ago
AU$1,096
Return
found 3 days ago
Select Jeju Air flight, departing Mon, 11 May from Seoul to Seattle, returning Mon, 18 May, priced at AU$1,096 found 3 days ago
China Airlines
Mon, 1 June - Mon, 29 June
ICN
Seoul
SEA
Seattle
AU$1,122 Return, found 2 hours ago
AU$1,122
Return
found 2 hours ago
Select China Airlines flight, departing Mon, 1 June from Seoul to Seattle, returning Mon, 29 June, priced at AU$1,122 found 2 hours ago
Hainan Airlines
Wed, 13 May - Thu, 21 May
ICN
Seoul
SEA
Seattle
AU$1,140 Return, found 3 days ago
AU$1,140
Return
found 3 days ago
Select Hainan Airlines flight, departing Wed, 13 May from Seoul to Seattle, returning Thu, 21 May, priced at AU$1,140 found 3 days ago

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

October is typically the cheapest month to fly

From AU$520 - AU$1,662 per traveller.

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 AU$684. 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.

Travel information

Origin airport
Incheon Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, Delta, EVA Airways, Japan Airlines, Korean Air, Lufthansa, Philippine Airlines, Singapore Airlines, United, WestJet
Return price
AU$684
Distance
8326 km

Book with confidence

SEL to SEA Flights

Ready to get away? Use Expedia.com.au to book cheap flights from Incheon to Seattle AU$684, and have leftover money to spare on adventures and activities while you’re in town. We have the world’s largest selection of flights, not to mention lower airfares than you’ll find anywhere else on the Internet.

Our user-friendly tools make it easier than ever to book SEL to SEA flights, even if you’re hoping to hop aboard one of the last-minute flights leaving today. So whether you seek a spontaneous trip to this city’s hottest attractions, or prefer to plan out every detail of your adventure ahead of time, Expedia.com.au is here to help you find exactly what you are interested in.

If you’re on the hunt for cheap flights to Seattle from Incheon, you need not look any further. We make it simple for you to compare different airline carriers or choose the one that appeals to you most. We work with dozens of airlines in order to offer you incredible deals on business and personal travel. Start by searching through our selection of plane tickets today, and you’ll be in the sky before you know it.

SEL to SEA Flights
*Available to Expedia members.