Cheap Flights from Seattle to Incheon International from $1,267

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Flight deals from Seattle to Incheon International

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

Seoul.$1,267 per passenger.Departing Thu, 29 Jan, returning Tue, 3 Mar.Return flight with Hainan Airlines and Air Canada.Outbound indirect flight with Hainan Airlines, departs from Seattle / Tacoma International on Thu, 29 Jan, arriving in Incheon International.Inbound indirect flight with Air Canada, departs from Incheon International on Tue, 3 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,267, select.

Seoul.$1,277 per passenger.Departing Thu, 12 Mar, returning Wed, 18 Mar.Return flight with Hainan Airlines.Outbound indirect flight with Hainan Airlines, departs from Seattle / Tacoma International on Thu, 12 Mar, arriving in Incheon International.Inbound indirect flight with Hainan Airlines, departs from Incheon International on Wed, 18 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,277, select.

Seoul.$1,313 per passenger.Departing Thu, 29 Jan, returning Thu, 5 Feb.Return flight with Hainan Airlines and Air Canada.Outbound indirect flight with Hainan Airlines, departs from Seattle / Tacoma International on Thu, 29 Jan, arriving in Incheon International.Inbound indirect flight with Air Canada, departs from Incheon International on Thu, 5 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,313, select.

Seoul.$1,313 per passenger.Departing Thu, 5 Feb, returning Thu, 19 Feb.Return flight with Hainan Airlines and Air Canada.Outbound indirect flight with Hainan Airlines, departs from Seattle / Tacoma International on Thu, 5 Feb, arriving in Incheon International.Inbound indirect flight with Air Canada, departs from Incheon International on Thu, 19 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,313, select.

Seoul.$1,350 per passenger.Departing Mon, 12 Jan, returning Mon, 26 Jan.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Mon, 12 Jan, arriving in Incheon International.Inbound indirect flight with Air Canada, departs from Incheon International on Mon, 26 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,350, select.

Seoul.$1,351 per passenger.Departing Mon, 16 Feb, returning Mon, 2 Mar.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Mon, 16 Feb, arriving in Incheon International.Inbound indirect flight with Air Canada, departs from Incheon International on Mon, 2 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,351, select.

Seoul.$1,368 per passenger.Departing Thu, 7 May, returning Wed, 27 May.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Thu, 7 May, arriving in Incheon International.Inbound indirect flight with Air Canada, departs from Incheon International on Wed, 27 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,368, select.

Seoul.$1,379 per passenger.Departing Thu, 23 Apr, returning Wed, 13 May.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Thu, 23 Apr, arriving in Incheon International.Inbound indirect flight with Air Canada, departs from Incheon International on Wed, 13 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,379, select.

Find the cheapest month to fly from Seattle to Incheon International

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

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Direct flights from Seattle to Incheon International

Seattle to Incheon International: Alternative routes

Compare routes from Seattle to Seoul below. You may find an airport to fly into that's cheaper, faster, or easier than Incheon International.

Seattle to Seoul: Flight information

The things to know before you go.

Cheapest flight found	$1,267
Cheapest month to fly	January
Average flight time	11 hrs, 55 mins
Most popular airline	Delta
Average flights per week	79

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

How much are return flights from Seattle to Incheon International?

The best price we found for a return flight from Seattle to Incheon International is $1,267. 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 Seattle to Incheon International?

11 hours and 55 minutes is the average flight time from Seattle to Incheon International.

Which airlines fly direct from Seattle to Incheon International?

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

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

As of December 2025, there are 79 flights per week flying from Seattle to Incheon International.

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

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

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

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Incheon International Airport on Thursday, 29 January 2026.

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

Yes – the average flight time is 11 hours and 55 minutes.

How can I find the best flight deal to Incheon International?

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 Incheon International 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 Seoul?

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

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

Seattle is home to two main airports where you can set off on your adventure. Check out your options for reserving a flight from Seattle to Incheon International Airport (ICN) leaving from Seattle-Tacoma International Airport (SEA) or Lake Union Sea Plane Base Airport (LKE).
Take a direct Seattle to Incheon International Airport flight and you'll be in the air for an average of 11 hours 45 minutes.
The timezone in Seoul is UTC+9, which is 16 hours ahead of Seattle. Incheon International Airport is located in Seoul.
The busiest route is from Seattle-Tacoma International Airport (SEA) to Incheon International Airport (ICN), with 20 direct services every week. If you're ready to head out sooner, the earliest flight from SEA to ICN is the 11am Korean Air option. If you prefer travelling later, the last departure is at 2:30pm with Asiana Airlines.
To ensure you get on your flight from Seattle to ICN, leave enough time to navigate the airport and find your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general rule.
Longer lines at check-in and security are more likely if you're travelling during high season, so allow even more breathing space. The recommendation for peak periods? Arrive up to four hours ahead for international flights and at least two hours for domestic departures.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

Seattle-Tacoma International Airport (SEA) will have you travelling directly to your destination. Nonstop flights from Seattle to Incheon International Airport (ICN) can be booked from this terminal.
At SEA, you can choose from various carriers operating direct flights from Seattle to Incheon International Airport, such as:
The top choice among passengers flying between SEA and ICN is Delta Air Lines.
Delta Air Lines is the most consistent performer for punctuality on this route.
A stopover is the perfect opportunity to break up your trip and possibly even visit a new city. When browsing cheap flights from Seattle to ICN departing from Seattle-Tacoma International Airport (SEA), uncheck the 'Direct flights only' box to find all potential stops. Popular options include:
- Harry Reid Airport (formerly McCarran Airport) (LAS)
- Vancouver International Airport (YVR)
- Narita International Airport (NRT)
SEA is around 23 kilometres from central Seattle. If you're ride-sharing, driving or catching a cab from the centre, it'll take you 20 minutes or so to get there, depending on the traffic. If you're using public transport, expect the travel time to be around 55 minutes.
Looking for a convenient hotel near Seattle-Tacoma International Airport? If you've booked an early flight from Seattle to Incheon International Airport, these accommodation options will have you sleeping a quick hop from check-in:
81.27% of flights departing from Seattle-Tacoma International Airport arrive at their destination on time. Given its reliable on-time performance, you're unlikely to be delayed when jetting out of SEA.

Lake Union Sea Plane Base Airport (LKE)

LKE is around 3 kilometres from central Seattle. It'll take 10 minutes or so to get to the airport driving from the city centre. Public transport takes approximately 25 minutes.
Flying out early in the morning? You might like to check in to one of these accommodation options near Lake Union Sea Plane Base Airport the day before your Seattle to ICN flight:

About Incheon International Airport (ICN)

If you're arriving on a late flight from Seattle to Incheon International Airport, few things top the convenience of staying near the terminal. Grab your bags from the carousel and then be showered and resting not long after at one of these options near ICN:
Say yes to new adventures by picking up an Incheon International Airport rental car. Grab your wheels from WECAR, Hi Rent A Car or Alamo to explore Seoul and beyond.
Get the best deal by booking your vehicle around four weeks ahead of your Seattle to Incheon International Airport flight.

Getting from Incheon International Airport (ICN) to central Seoul

Incheon International Airport to central Seoul is roughly 48 kilometres. If you're getting a cab or renting a car, plan in advance to make your trip as easy as possible. Journey times vary based on the time of day and traffic conditions.
If you're travelling on public transport, expect a journey time of around 1 hour 45 minutes.

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

Currently, $607 is the lowest price we've found for a one-way ticket from Seattle to Incheon International Airport. The cheapest price for a return flight is $1,267. Keep in mind fares can change due to availability at the time of booking.
To snag cheap flights from Seattle to ICN, book your flight ticket three months ahead of your departure date.
The best month for scoring cheap Seattle to Incheon International Airport tickets is August. Use the 'Whole month' tool to compare flight prices, then select the dates with the lowest fares.
Snapping up a cheap flight ticket from Seattle to ICN is a breeze with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch when a better deal is available.
Hunt down a great price on a flight from Seattle to Incheon International Airport with the help of the filters. Choose your ideal departure and arrival times, airlines and number of stops. You can also sort your results by 'Best,' 'Fastest' or 'Cheapest.'

The best time to fly from Seattle to Incheon International Airport (ICN)

July is the most popular month for flights from Seattle to Incheon International Airport (ICN). Visit Seoul in April for a more low-key escape.
Lock in a Seattle to ICN flight ticket departing in August if you want to explore the city during its warmest month. You can expect temperatures in Seoul to range from 19ºC to 32ºC.
For cooler conditions, search for a cheap ticket from Seattle to Incheon International Airport in January when temperatures are between -12ºC and 4ºC.

More about Seoul

Once you've booked your flight from Seattle to Incheon International Airport, find a hotel that keeps you close to what you want to see. Make one of these options your base for exploring Seoul:
Your trip to Seoul won't be complete without checking out the sights. Top attractions that belong on your itinerary include Gyeongbokgung Palace, Bukchon Hanok Village and N Seoul Tower.

Explore more of South Korea

Daegu is just one of the many cities in South Korea waiting to be explored after you've experienced Seoul. Around 257 kilometres away to the south-east, its best attractions include Modern Art Statue, Alive Aquarium Daegu and Jung-gu District.
Around 153 kilometres south-east of Seoul, Daejeon is another favourite stop in South Korea. Experience the best of this destination with a visit to Temi Park, National Science Museum and Yuseong Hot Springs.