₩581,200 Cheap Flights from Seoul (ICN) to Seattle (SEA)

View ₩581,200 flight on Tue, Feb 24, 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Seattle

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Cheap Flights from Seoul to Seattle (ICN-SEA)

Prices were available within the past 7 days and start at ₩581,200 for one-way flights and ₩813,400 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sun, Mar 1 - Thu, Apr 30
ICN
Seoul
SEA
Seattle
₩813,400 Roundtrip, found 6 days ago
₩813,400
Roundtrip
found 6 days ago
Select Air Canada flight, departing Sun, Mar 1 from Seoul to Seattle, returning Thu, Apr 30, priced at ₩813,400 found 6 days ago
United
Sun, Mar 1 - Thu, Apr 30
ICN
Seoul
SEA
Seattle
₩820,700 Roundtrip, found 6 days ago
₩820,700
Roundtrip
found 6 days ago
Select United flight, departing Sun, Mar 1 from Seoul to Seattle, returning Thu, Apr 30, priced at ₩820,700 found 6 days ago
Hawaiian Airlines
Thu, Jan 15 - Wed, Jan 28
ICN
Seoul
SEA
Seattle
₩898,800 Roundtrip, found 1 hour ago
₩898,800
Roundtrip
found 1 hour ago
Select Hawaiian Airlines flight, departing Thu, Jan 15 from Seoul to Seattle, returning Wed, Jan 28, priced at ₩898,800 found 1 hour ago
American Airlines
Sat, Jan 24 - Sat, Feb 21
ICN
Seoul
SEA
Seattle
₩964,400 Roundtrip, just found
₩964,400
Roundtrip
just found
Select American Airlines flight, departing Sat, Jan 24 from Seoul to Seattle, returning Sat, Feb 21, priced at ₩964,400 just found
Alaska Airlines
Wed, Apr 8 - Sat, Apr 25
ICN
Seoul
SEA
Seattle
₩964,700 Roundtrip, found 1 day ago
₩964,700
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, Apr 8 from Seoul to Seattle, returning Sat, Apr 25, priced at ₩964,700 found 1 day ago
Delta
Fri, Jun 5 - Fri, Jul 31
ICN
Seoul
SEA
Seattle
₩1,071,700 Roundtrip, found 2 days ago
₩1,071,700
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Jun 5 from Seoul to Seattle, returning Fri, Jul 31, priced at ₩1,071,700 found 2 days ago
Korean Air
Mon, Jun 8 - Thu, Jul 9
ICN
Seoul
SEA
Seattle
₩1,072,100 Roundtrip, found 18 hours ago
₩1,072,100
Roundtrip
found 18 hours ago
Select Korean Air flight, departing Mon, Jun 8 from Seoul to Seattle, returning Thu, Jul 9, priced at ₩1,072,100 found 18 hours ago
Hainan Airlines
Wed, May 13 - Thu, May 28
ICN
Seoul
SEA
Seattle
₩1,113,000 Roundtrip, found 1 day ago
₩1,113,000
Roundtrip
found 1 day ago
Select Hainan Airlines flight, departing Wed, May 13 from Seoul to Seattle, returning Thu, May 28, priced at ₩1,113,000 found 1 day ago
China Airlines
Thu, Mar 12 - Tue, Mar 17
ICN
Seoul
SEA
Seattle
₩1,310,600 Roundtrip, found 2 days ago
₩1,310,600
Roundtrip
found 2 days ago
Select China Airlines flight, departing Thu, Mar 12 from Seoul to Seattle, returning Tue, Mar 17, priced at ₩1,310,600 found 2 days ago
Philippine Airlines
Tue, Sep 8 - Wed, Sep 16
ICN
Seoul
SEA
Seattle
₩1,316,000 Roundtrip, found 2 days ago
₩1,316,000
Roundtrip
found 2 days ago
Select Philippine Airlines flight, departing Tue, Sep 8 from Seoul to Seattle, returning Wed, Sep 16, priced at ₩1,316,000 found 2 days ago

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

October is typically the cheapest month to fly

From ₩495,401 - ₩1,399,692 per traveler.

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from ₩917,600
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from ₩917,600
Flights from Seoul (ICN) to Seattle (SEA)
Origin airport
Incheon Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Ethiopian Airlines, Hawaiian Airlines, Japan Airlines, KLM, Korean Air, Lufthansa, Philippine Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines, United, WestJet
Roundtrip price
₩813,400
Distance
8326 km
Average flight time
-6 hours -57 mins

Incheon to Seattle 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 Incheon to Seattle 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 Seattle.

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 ICN to SEA flights that won’t make your bank account wince. Ready to temporarily leave behind Incheon 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 SEA 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.

Frequently asked questions

How much is a flight from Seoul–Incheon Intl. Airport to Sea-Tac Airport?
Start packing your bags, because round-trip flights from Seoul–Incheon Intl. Airport to SEA start from ₩813,400. That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can go up quickly, so book today to score the best deal. 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–Incheon Intl. Airport to Seattle - Tacoma Intl. Airport (SEA)?
Each air carrier has its own terms and conditions. If you decide to cancel your escape, head to our Customer Service Portal.
How do I find cheap flights from Seoul–Incheon Intl. Airport to Seattle - Tacoma Intl. Airport (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–Incheon Intl. Airport to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from ICN to Sea-Tac Airport?
The distance is around 8,400 kilometers. Neck pillow? Check. Warm clothes? Check. We recommend you pack all the essentials for this long-haul South Korea to SeaTac flight.
Which airlines fly direct from ICN to SEA?
With 39 flights every month operating from ICN to SEA, Delta Air Lines (DL) is a top choice. Another airline operating on this route is Korean Air (KE). You'll have 21 flights every month to take your pick of.
Are Seoul–Incheon Intl. Airport to SEA flight tickets cheaper when they're purchased at the last minute?
Booking last minute from Incheon Airport to Sea-Tac Airport can be hit-or-miss. You may be able to score a bargain, but you could also completely miss out! If you'd prefer to start your travel planning ahead of time, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines advertise their prices so far in advance. Our suggestion? Check back often as prices are updated regularly.
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