₩601,200 Cheap Flights from Seattle (SEA) to Seoul (ICN)

View ₩601,200 flight on Mon, Jan 19, 2026Opens 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 ₩601,200 for one-way flights and ₩993,200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, Sep 25 - Thu, Oct 2
SEA
Seattle
ICN
Seoul
₩993,200 Roundtrip, found 6 days ago
₩993,200
Roundtrip
found 6 days ago
Select Delta flight, departing Thu, Sep 25 from Seattle to Seoul, returning Thu, Oct 2, priced at ₩993,200 found 6 days ago
United
Tue, Oct 21 - Tue, Nov 11
SEA
Seattle
ICN
Seoul
₩1,001,500 Roundtrip, found 5 days ago
₩1,001,500
Roundtrip
found 5 days ago
Select United flight, departing Tue, Oct 21 from Seattle to Seoul, returning Tue, Nov 11, priced at ₩1,001,500 found 5 days ago
Air Canada
Thu, Jan 22 - Mon, Jan 26
SEA
Seattle
ICN
Seoul
₩1,076,500 Roundtrip, found 6 days ago
₩1,076,500
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Jan 22 from Seattle to Seoul, returning Mon, Jan 26, priced at ₩1,076,500 found 6 days ago
Hawaiian Airlines
Thu, Oct 2 - Sun, Oct 12
SEA
Seattle
ICN
Seoul
₩1,151,500 Roundtrip, found 6 days ago
₩1,151,500
Roundtrip
found 6 days ago
Select Hawaiian Airlines flight, departing Thu, Oct 2 from Seattle to Seoul, returning Sun, Oct 12, priced at ₩1,151,500 found 6 days ago
Korean Air
Wed, Oct 1 - Mon, Oct 20
SEA
Seattle
ICN
Seoul
₩1,156,400 Roundtrip, found 2 days ago
₩1,156,400
Roundtrip
found 2 days ago
Select Korean Air flight, departing Wed, Oct 1 from Seattle to Seoul, returning Mon, Oct 20, priced at ₩1,156,400 found 2 days ago
Alaska Airlines
Sat, Sep 27 - Sun, Sep 28
SEA
Seattle
ICN
Seoul
₩1,176,400 Roundtrip, just found
₩1,176,400
Roundtrip
just found
Select Alaska Airlines flight, departing Sat, Sep 27 from Seattle to Seoul, returning Sun, Sep 28, priced at ₩1,176,400 just found
American Airlines
Wed, Oct 1 - Fri, Oct 31
SEA
Seattle
ICN
Seoul
₩1,201,500 Roundtrip, found 3 hours ago
₩1,201,500
Roundtrip
found 3 hours ago
Select American Airlines flight, departing Wed, Oct 1 from Seattle to Seoul, returning Fri, Oct 31, priced at ₩1,201,500 found 3 hours ago
Cathay Pacific
Sun, Apr 19 - Thu, Apr 23
SEA
Seattle
ICN
Seoul
₩1,378,300 Roundtrip, found 6 days ago
₩1,378,300
Roundtrip
found 6 days ago
Select Cathay Pacific flight, departing Sun, Apr 19 from Seattle to Seoul, returning Thu, Apr 23, priced at ₩1,378,300 found 6 days ago
EVA Airways
Mon, Oct 27 - Mon, Nov 3
SEA
Seattle
ICN
Seoul
₩1,431,400 Roundtrip, found 4 hours ago
₩1,431,400
Roundtrip
found 4 hours ago
Select EVA Airways flight, departing Mon, Oct 27 from Seattle to Seoul, returning Mon, Nov 3, priced at ₩1,431,400 found 4 hours ago
WestJet
Thu, Oct 2 - Sat, Oct 11
SEA
Seattle
ICN
Seoul
₩1,437,500 Roundtrip, found 6 days ago
₩1,437,500
Roundtrip
found 6 days ago
Select WestJet flight, departing Thu, Oct 2 from Seattle to Seoul, returning Sat, Oct 11, priced at ₩1,437,500 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 ₩1,018,813 - ₩1,571,151 per traveler.

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 ₩993,200. 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 canceled 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 kilometers, 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

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Incheon Intl.
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Etihad Airways, Hawaiian Airlines, KLM, Korean Air, Philippine Airlines, Qatar Airways, Turkish Airlines, United, WestJet
Roundtrip price
₩993,200
Distance
8326 km
Average flight time
27 hours 47 mins

Book with confidence

Book with confidence

Seattle to Incheon Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Seattle to Incheon will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Incheon.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with SEA to ICN flights that won’t make your bank account wince. Ready to temporarily leave behind Seattle for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to ICN with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Seattle to Incheon Flights

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Explore a world of travel with Expedia

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