Cheap Flights from Incheon International to Seattle

Compare Incheon International to Seattle flight deals

Find the cheapest month or even day of the year to fly to Seattle

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Flight deals from Incheon International to Seattle

Looking for a cheap last-minute deal or the best return flight from Incheon International to Seattle? Find the lowest prices on one-way and return tickets right here.

Seattle.£265 per passenger.Departing Wed, 7 May.One-way flight with Air Premia.Outbound indirect flight with Air Premia, departs from Incheon International on Wed, 7 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £265, select.

Seattle.£311 per passenger.Departing Wed, 9 Apr.One-way flight with Hainan Airlines.Outbound indirect flight with Hainan Airlines, departs from Incheon International on Wed, 9 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £311, select.

Seattle.£332 per passenger.Departing Thu, 5 Jun.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Incheon International on Thu, 5 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £332, select.

Seattle.£341 per passenger.Departing Fri, 7 Nov.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Fri, 7 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £341, select.

Seattle.£344 per passenger.Departing Fri, 17 Oct.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Fri, 17 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £344, select.

Seattle.£344 per passenger.Departing Thu, 11 Sep.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Thu, 11 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £344, select.

Seattle.£345 per passenger.Departing Tue, 2 Dec.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Tue, 2 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £345, select.

Seattle.£345 per passenger.Departing Mon, 9 Feb.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Mon, 9 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From £345, select.

Find the cheapest month to fly from Incheon International to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Incheon International to Seattle flights are currently cheapest in May.

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Direct flights from Incheon International to Seattle

Alternative Incheon International to Seattle routes

Looking for the cheapest, fastest or easiest route from Incheon International to Seattle? You could fly into the following airports instead.

Seoul to Seattle: Flight information

The things to know before you go.

Cheapest flight found	£265
Cheapest month to fly	May
Average flight time	10 hrs, 14 mins
Most popular airline	Delta
Average flights per week	63

Finding cheap flights from Incheon International to Seattle: Frequently asked questions

How many airports are there in Seattle?

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.

How much are return flights from Incheon International to Seattle?

The best price we found for a return flight from Incheon International to Seattle is £336. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Incheon International to Seattle?

10 hours and 14 minutes is the average flight time from Incheon International to Seattle.

Which airlines fly direct from Incheon International to Seattle?

Delta, Korean Air and Singapore Airlines fly direct from Incheon International to Seattle.

How many flights are there a week from Incheon International to Seattle?

As of April 2025, there are 63 flights per week flying from Incheon International to Seattle.

When is the cheapest time to fly from Incheon International to Seattle?

The cheapest month to fly from Incheon International to Seattle is usually April 2025.

Which is the cheapest airport to fly into in Seattle?

If you're flying from Incheon International Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from £336.

Which upcoming date is cheapest to fly from Incheon International Airport to Seattle on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Incheon International Airport to Seattle on Tuesday, 6 May 2025.

Can I get a direct flight from Incheon International Airport to Seattle?

Yes – the average flight time is 10 hours and 14 minutes.

How can I get the best flight deal from Incheon International Airport to Seattle?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Seattle?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

What’s the weather like in Seattle?

In April, the average temperature is usually around 8°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.

Which is the cheapest airline to fly from Incheon International Airport to Seattle with?

Currently, Air Canada and Korean Air offer the cheapest flight tickets to Seattle.

How to find cheap flights to Seattle from Incheon International

Looking for cheap tickets from Incheon International to Seattle? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

Simply hit 'search'. From British Airways to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Incheon International to Seattle. And with us there are no hidden fees - what you see is what you pay.
Compare flight deals to Seattle from Incheon International from over 1,000 providers. Then choose the cheapest or fastest plane tickets.
Flex your dates to find the best Incheon International-Seattle ticket prices. If you are flexible when it comes to your travel dates, use Skyscanner's 'Whole month' tool to find the cheapest month, and even day to fly to Seattle from Incheon International.
Set up a Price Alert. You can easily track the fare of your cheap Incheon International-Seattle flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
Fly without stops. Only interested in direct flights between Incheon International and Seattle? Make sure to tick 'Direct flights only' when performing a search. If there are direct flights available on the route, these will appear in the results.
Find the cheapest Business class flights from Incheon International and Seattle. We scour the internet for the best Business, Premium Economy and First Class flight fares to Seattle, too. Check the difference in price as you search – you might just chance upon a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
Include nearby airports in your search. Widen your search for Incheon International to Seattle flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save next time you travel.

Combine your flight to Seattle from Incheon International with hotels and car hire

Once you've secured your cheap flight ticket from Incheon International to Seattle, discover the best prices and exclusive rates for hotels in Seattle or nearby. You can also compare hundreds of car hire companies in one go so that you get the best car hire price for your trip.