£396 Cheap Flights from Seoul (ICN) to Seattle (SEA)

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

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

Prices were available within the past 7 days and start at £396 for one-way flights and £444 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Korean Air
Delta
Hawaiian Airlines
Alaska Airlines
Air Canada
United
China Airlines
EVA Airways
Japan Airlines

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

September is typically the cheapest month to fly

From £342 - £726 per traveller.

Graph displaying average flight prices per month

Flight from Seoul to Seattle route information
Origin airport
Incheon Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Alaska Airlines, All Nippon Airways, Asiana Airlines, China Airlines, EVA Airways, Emirates, Ethiopian Airlines, Etihad Airways, Finnair, Hawaiian Airlines, Japan Airlines, KLM, Korean Air, Lufthansa, Philippine Airlines, Qatar Airways, Swiss International Air Lines, Turkish Airlines, WestJet
Return price
£443
Distance
8326 km
Average flight time
-5 hours -35 mins

Compare flights from Seoul to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seoul to Seattle. Operating between them 8 flights per day, 20 airlines cover the route. And Thai Airways International, Delta Air Lines, Korean Air, Asiana Airlines, United Airlines, Singapore Airlines fly direct, getting you to Seattle - Tacoma Intl. in just 10hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Incheon Intl. to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Incheon Intl. (ICN) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Seoul to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Incheon Intl. to Seattle - Tacoma Intl. start at just £444 and range up to £1,058.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seoul and Seattle
  • booking your flight during December, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seoul to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Incheon Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

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 £444. 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.

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