₩580,100 Cheap Flights from Seoul (ICN) to Seattle (SEA)

View ₩580,100 flight on Sun, Feb 1, 2026Opens in a new window

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

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seoul to Seattle (ICN-SEA)

Prices were available within the past 7 days and start at ₩580,100 for one-way flights and ₩810,500 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Sun, Feb 8 - Thu, Feb 12
ICN
Seoul
SEA
Seattle
₩810,500 Roundtrip, found 1 day ago
₩810,500
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sun, Feb 8 from Seoul to Seattle, returning Thu, Feb 12, priced at ₩810,500 found 1 day ago
United
Sun, Feb 8 - Thu, Feb 12
ICN
Seoul
SEA
Seattle
₩821,200 Roundtrip, found 1 day ago
₩821,200
Roundtrip
found 1 day ago
Select United flight, departing Sun, Feb 8 from Seoul to Seattle, returning Thu, Feb 12, priced at ₩821,200 found 1 day ago
American Airlines
Wed, Feb 4 - Sun, Feb 8
ICN
Seoul
SEA
Seattle
₩911,000 Roundtrip, found 2 days ago
₩911,000
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Feb 4 from Seoul to Seattle, returning Sun, Feb 8, priced at ₩911,000 found 2 days ago
Hawaiian Airlines
Fri, Jan 30 - Fri, Feb 13
ICN
Seoul
SEA
Seattle
₩1,004,500 Roundtrip, found 11 hours ago
₩1,004,500
Roundtrip
found 11 hours ago
Select Hawaiian Airlines flight, departing Fri, Jan 30 from Seoul to Seattle, returning Fri, Feb 13, priced at ₩1,004,500 found 11 hours ago
Delta
Mon, Dec 22 - Sat, Feb 7
ICN
Seoul
SEA
Seattle
₩1,006,900 Roundtrip, found 1 day ago
₩1,006,900
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Dec 22 from Seoul to Seattle, returning Sat, Feb 7, priced at ₩1,006,900 found 1 day ago
WestJet
Thu, May 21 - Wed, May 27
ICN
Seoul
SEA
Seattle
₩1,032,900 Roundtrip, found 23 hours ago
₩1,032,900
Roundtrip
found 23 hours ago
Select WestJet flight, departing Thu, May 21 from Seoul to Seattle, returning Wed, May 27, priced at ₩1,032,900 found 23 hours ago
Korean Air
Wed, Dec 24 - Wed, Jan 7
ICN
Seoul
SEA
Seattle
₩1,072,300 Roundtrip, found 2 days ago
₩1,072,300
Roundtrip
found 2 days ago
Select Korean Air flight, departing Wed, Dec 24 from Seoul to Seattle, returning Wed, Jan 7, priced at ₩1,072,300 found 2 days ago
Singapore Airlines
Thu, Mar 26 - Thu, Apr 9
ICN
Seoul
SEA
Seattle
₩1,364,300 Roundtrip, found 2 days ago
₩1,364,300
Roundtrip
found 2 days ago
Select Singapore Airlines flight, departing Thu, Mar 26 from Seoul to Seattle, returning Thu, Apr 9, priced at ₩1,364,300 found 2 days ago
China Airlines
Tue, Sep 8 - Wed, Sep 9
ICN
Seoul
SEA
Seattle
₩1,367,300 Roundtrip, found 6 days ago
₩1,367,300
Roundtrip
found 6 days ago
Select China Airlines flight, departing Tue, Sep 8 from Seoul to Seattle, returning Wed, Sep 9, priced at ₩1,367,300 found 6 days ago
EVA Airways
Wed, Feb 4 - Fri, Aug 7
ICN
Seoul
SEA
Seattle
₩1,368,300 Roundtrip, found 1 day ago
₩1,368,300
Roundtrip
found 1 day ago
Select EVA Airways flight, departing Wed, Feb 4 from Seoul to Seattle, returning Fri, Aug 7, priced at ₩1,368,300 found 1 day 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 ₩2,497,900
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from ₩2,497,900
Flights from Seoul (ICN) to Seattle (SEA)
Origin airport
Incheon Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, Delta, EVA Airways, Emirates, Ethiopian Airlines, Hawaiian Airlines, Japan Airlines, Korean Air, Lufthansa, Philippine Airlines, Qatar Airways, Singapore Airlines, Turkish Airlines, United, WestJet
Roundtrip price
₩810,500
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 ₩810,500. 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.
*Available to Expedia members.