฿17,105 Cheap Flights from Seoul (ICN) to Seattle (SEA)

View ฿17,105 flight on Tue, 22 Sept 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Seattle-Tacoma International Airport (SEA)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

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

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ฿17,105 for one-way flights and ฿32,390 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, 6 May - Wed, 13 May
ICN
Seoul
SEA
Seattle
฿32,390 Return, found 4 days ago
฿32,390
Return
found 4 days ago
Select United flight, departing Wed, 6 May from Seoul to Seattle, returning Wed, 13 May, priced at ฿32,390 found 4 days ago
United
Tue, 5 May - Tue, 12 May
ICN
Seoul
SEA
Seattle
฿32,470 Return, found 3 days ago
฿32,470
Return
found 3 days ago
Select United flight, departing Tue, 5 May from Seoul to Seattle, returning Tue, 12 May, priced at ฿32,470 found 3 days ago
United
Mon, 2 Nov - Sun, 10 Jan
ICN
Seoul
SEA
Seattle
฿33,040 Return, found 14 hours ago
฿33,040
Return
found 14 hours ago
Select United flight, departing Mon, 2 Nov from Seoul to Seattle, returning Sun, 10 Jan, priced at ฿33,040 found 14 hours ago
American Airlines
Tue, 22 Sept - Tue, 29 Sept
ICN
Seoul
SEA
Seattle
฿33,225 Return, found 3 days ago
฿33,225
Return
found 3 days ago
Select American Airlines flight, departing Tue, 22 Sept from Seoul to Seattle, returning Tue, 29 Sept, priced at ฿33,225 found 3 days ago
Air Canada
Sun, 13 Dec - Sat, 13 Feb
ICN
Seoul
SEA
Seattle
฿34,135 Return, found 1 day ago
฿34,135
Return
found 1 day ago
Select Air Canada flight, departing Sun, 13 Dec from Seoul to Seattle, returning Sat, 13 Feb, priced at ฿34,135 found 1 day ago
United
Sun, 13 Dec - Sat, 13 Feb
ICN
Seoul
SEA
Seattle
฿34,465 Return, found 1 day ago
฿34,465
Return
found 1 day ago
Select United flight, departing Sun, 13 Dec from Seoul to Seattle, returning Sat, 13 Feb, priced at ฿34,465 found 1 day ago
United
Wed, 6 May - Wed, 13 May
ICN
Seoul
SEA
Seattle
฿35,225 Return, found 4 days ago
฿35,225
Return
found 4 days ago
Select United flight, departing Wed, 6 May from Seoul to Seattle, returning Wed, 13 May, priced at ฿35,225 found 4 days ago
Singapore Airlines
Mon, 2 Nov - Sun, 10 Jan
ICN
Seoul
SEA
Seattle
฿35,900 Return, found 14 hours ago
฿35,900
Return
found 14 hours ago
Select Singapore Airlines flight, departing Mon, 2 Nov from Seoul to Seattle, returning Sun, 10 Jan, priced at ฿35,900 found 14 hours ago
China Airlines
Mon, 2 Nov - Sun, 10 Jan
ICN
Seoul
SEA
Seattle
฿37,175 Return, found 14 hours ago
฿37,175
Return
found 14 hours ago
Select China Airlines flight, departing Mon, 2 Nov from Seoul to Seattle, returning Sun, 10 Jan, priced at ฿37,175 found 14 hours ago
Asiana Airlines
Tue, 22 Sept - Tue, 29 Sept
ICN
Seoul
SEA
Seattle
฿37,950 Return, found 3 days ago
฿37,950
Return
found 3 days ago
Select Asiana Airlines flight, departing Tue, 22 Sept from Seoul to Seattle, returning Tue, 29 Sept, priced at ฿37,950 found 3 days ago

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

September is typically the cheapest month to fly

From ฿12,521 - ฿30,641 per traveller.

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 ฿32,390. 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 kilometres. 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.

Travel 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, Emirates, Korean Air, Philippine Airlines, United, WestJet
Return price
฿32,390
Distance
8326 km
Average flight time
-5 hours -59 mins
*Available to Expedia members.