Cheap flights from Incheon International to Seattle

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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 round-trip flight from Incheon International Airport to Seattle? If you want to travel next month, round-trip fares start from $880. Find the lowest prices on one-way and round-trip tickets right here.

Seattle.$852 per passenger.Departing Mon, May 3, returning Fri, May 28.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Mon, May 3, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Fri, May 28, arriving in Incheon International.Price includes taxes and charges.From $852, select.

Seattle.$867 per passenger.Departing Wed, Apr 7, returning Thu, Sep 2.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Wed, Apr 7, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Thu, Sep 2, arriving in Incheon International.Price includes taxes and charges.From $867, select.

Seattle.$869 per passenger.Departing Sun, Apr 4, returning Fri, Apr 9.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Sun, Apr 4, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Fri, Apr 9, arriving in Incheon International.Price includes taxes and charges.From $869, select.

Seattle.$869 per passenger.Departing Mon, Feb 1, returning Thu, Apr 1.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Mon, Feb 1, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Thu, Apr 1, arriving in Incheon International.Price includes taxes and charges.From $869, select.

Seattle.$869 per passenger.Departing Sun, Aug 15, returning Mon, Aug 23.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Sun, Aug 15, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Mon, Aug 23, arriving in Incheon International.Price includes taxes and charges.From $869, select.

Seattle.$869 per passenger.Departing Wed, Mar 10, returning Wed, Mar 17.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Wed, Mar 10, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Wed, Mar 17, arriving in Incheon International.Price includes taxes and charges.From $869, select.

Seattle.$869 per passenger.Departing Mon, Jan 25, returning Thu, Apr 29.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Mon, Jan 25, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Thu, Apr 29, arriving in Incheon International.Price includes taxes and charges.From $869, select.

Seattle.$872 per passenger.Departing Mon, Mar 22, returning Thu, Apr 1.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Mon, Mar 22, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Thu, Apr 1, arriving in Incheon International.Price includes taxes and charges.From $872, select.

Seattle.$872 per passenger.Departing Mon, Mar 1, returning Thu, Jul 1.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Mon, Mar 1, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Thu, Jul 1, arriving in Incheon International.Price includes taxes and charges.From $872, select.

Seattle.$872 per passenger.Departing Wed, May 19, returning Wed, Jun 2.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Wed, May 19, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Wed, Jun 2, arriving in Incheon International.Price includes taxes and charges.From $872, select.

Seattle.$872 per passenger.Departing Thu, Aug 26, returning Mon, Sep 6.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Thu, Aug 26, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Mon, Sep 6, arriving in Incheon International.Price includes taxes and charges.From $872, select.

Seattle.$878 per passenger.Departing Sun, Nov 1, returning Sat, Nov 7.Round-trip flight with Air Premia and Alaska Airlines.Outbound indirect flight with Air Premia, departing from Incheon International on Sun, Nov 1, arriving in Seattle / Tacoma International.Inbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Sat, Nov 7, arriving in Incheon International.Price includes taxes and charges.From $878, select.

Seattle.$879 per passenger.Departing Thu, Oct 29, returning Thu, Nov 5.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Thu, Oct 29, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Thu, Nov 5, arriving in Incheon International.Price includes taxes and charges.From $879, select.

Seattle.$880 per passenger.Departing Tue, Oct 20, returning Wed, Apr 7.Round-trip flight with Philippine Airlines.Outbound indirect flight with Philippine Airlines, departing from Incheon International on Tue, Oct 20, arriving in Seattle / Tacoma International.Inbound indirect flight with Philippine Airlines, departing from Seattle / Tacoma International on Wed, Apr 7, arriving in Incheon International.Price includes taxes and charges.From $880, select.

Seattle.$880 per passenger.Departing Tue, Oct 13, returning Wed, Dec 30.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Tue, Oct 13, arriving in Seattle / Tacoma International.Inbound indirect flight with Air Canada, departing from Seattle / Tacoma International on Wed, Dec 30, arriving in Incheon International.Price includes taxes and charges.From $880, select.

Seattle.$880 per passenger.Departing Mon, Nov 9, returning Mon, Apr 5.Round-trip flight with Air Canada.Outbound indirect flight with Air Canada, departing from Incheon International on Mon, Nov 9, arriving in Seattle / Tacoma International.Inbound indirect flight with Air Canada, departing from Seattle / Tacoma International on Mon, Apr 5, arriving in Incheon International.Price includes taxes and charges.From $880, 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	$852
Cheapest month to fly	May
Average flight time	10 hrs, 6 mins
Most popular airline	Korean Air
Average flights per week	56

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 round-trip flights from Incheon International to Seattle?

The best price we found for a round-trip flight from Incheon International to Seattle is $852. 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 6 minutes is the average flight time from Incheon International to Seattle.

Which airlines fly direct from Incheon International to Seattle?

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

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

There are 56 flights per week flying from Incheon International to Seattle, as of September 2026.

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

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

What's the cheapest airport to fly to 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 center of Seattle. We've found flights to this airport from $852.

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 Monday, May 3, 2027.

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

Yes – the average flight time is 10 hours and 6 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 September, the average temperature is usually around 17°C. August is typically the warmest month in Seattle, when it usually averages around 25°C. You can expect the least rain in July. The coldest month is January, with temperatures averaging 4°C. The rainiest month is December.

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

Currently, Philippine Airlines and Asiana Airlines offer the cheapest flight tickets to Seattle.

Flying from Incheon International Airport (ICN) to Seattle: what you need to know

Around 11 hours 45 minutes is how long you can expect to be in the air on a direct flight from Incheon International Airport to Seattle.
Incheon International Airport is located in Seoul. Based in the UTC-7 timezone, Seattle is 16 hours behind Seoul.
Incheon International Airport (ICN) to Seattle-Tacoma International Airport (SEA) is the most popular route, with 20 weekly departures to pick from. If you have things to finalize before heading off, the last flight from ICN to SEA is with Delta Air Lines at 20:05. Choose the first departure operated by Korean Air at 16:10 if you want to get on your way earlier.
For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. That way, you can comfortably board your ICN to Seattle flight.
Flying over a peak time like July? Major public holidays and other popular periods can lead to longer lines and delays at security. Play things extra safe and get there up to four hours ahead of an international flight and two hours before a domestic departure.
Direct Incheon International Airport to Seattle tickets are available for booking. Seattle-Tacoma International Airport (SEA) is where you'll arrive.
You'll find a good selection of carriers that offer direct flights from Incheon International Airport to Seattle, such as:
Stopovers are the perfect opportunity to break up your journey and perhaps even tick off a new city. When browsing for plane tickets from ICN to Seattle, deselect the 'Direct flights only' box to see where you can stop along the way. Consider one of these popular options:
- Vancouver International Airport (YVR)
- Narita International Airport (NRT)
- Calgary International Airport (YYC)
From central Seoul, ICN is around 48 kilometers away. Use navigation apps or check the official airport website to work out the best way to reach the terminal.
Want a stress-free start to your journey? Stay near ICN. Whether you're boarding an early flight from Incheon International Airport to Seattle or want to avoid feeling rushed, these hotels have you covered:
Of the flights that depart from Incheon International Airport, 54.5% touch down on time at their destination.

How to find the cheapest flights from Incheon International Airport (ICN) to Seattle

$478 is the lowest price we've found for a one-way Incheon International Airport to Seattle flight. A round-trip ticket right now is $852. Depending on the availability and when you book, these fares may change.
To score cheap flights from ICN to Seattle, reserve your journey one month ahead of your planned departure.
May is the best month for scoring an incredible deal on Incheon International Airport to Seattle tickets. If you need to travel during a different time of year, the 'Whole month' tool will show you the lowest prices across every month.
You don't need to check in daily to see if fares have dropped when you create a Price Alert. We'll notify you as soon as there's an even better deal on cheap flights from ICN to Seattle.
Save on your flight from Incheon International Airport to Seattle with the help of our filters. Select your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

Seattle-Tacoma International Airport (SEA) to central Seattle takes around 20 minutes to reach by car. The center is roughly 23 kilometers away.
If you're traveling by public transport, expect a journey time of around 55 minutes.
If you have a late flight from Incheon International Airport to Seattle, nothing beats the convenience of staying close to the terminal. Grab your suitcases from the carousel and then be showered and relaxing not long after at one of these hotels near SEA:
Say yes to new adventures by picking up a Seattle-Tacoma International Airport rental car. Grab a set of wheels from Thrifty, Europcar or Budget to explore Seattle and beyond.
Lock in the lowest price by reserving your vehicle from Seattle-Tacoma International Airport about one week before your flight from ICN to Seattle.

Lake Union Sea Plane Base Airport (LKE)

Once your flight from Incheon International Airport to Seattle has hit the runway, you can make your way to the city center in about 10 minutes by car. Central Seattle is roughly 3 kilometers from Lake Union Sea Plane Base Airport (LKE).
If you travel by public transport, you'll get to the city center in 25 minutes or so.
Place the 'Do not disturb' sign on your door and rest at a hotel near LKE. Here are a few options where you can check in after your ICN to Seattle flight:

Best time to go to Seattle

Travel to Seattle during peak season if you prefer a lively atmosphere, but remember that prices may be higher. Alternatively, book flights from Incheon International Airport to Seattle during low season when prices are cheaper and crowds are smaller.
The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Book your Incheon International Airport to Seattle flight ticket then if that's your ideal forecast.
If you like traveling in cooler conditions, look for a cheap ticket from ICN to Seattle in February when temperatures average between -1ºC (30ºF) and 11ºC (52ºF).

More about Seattle

When it comes to looking for somewhere to lay your head, you'll find the top stays in Seattle right here. Browse these options as soon as you've booked your flight from Incheon International Airport to Seattle:
There are so many things to see and do in this city it can be hard to figure out where to start. LMN Architects, Greyhound: Bus Station and Boeing Radiation Effects Lab are popular attractions which should be on any well-planned Seattle itinerary.

Explore more of United States

Portland is just one of the many places in United States waiting to be explored once you've seen the sights of Seattle. Around 241 kilometers away to the south, well-known attractions include Pioneer Courthouse Square, Portland Japanese Garden and Pittock Mansion.
Spokane is another sought-after destination in United States and is around 370 kilometers east of Seattle. No trip is complete without seeing Manito Park, Northwest Museum of Arts & Culture and Spokane Falls.