$1,293 Cheap Flights from Seattle to Incheon International in 2025

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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.$1,293 per passenger.Departing Mon, 12 May, returning Mon, 19 May.Return flight with Hawaiian Airlines and Air Premia.Outbound indirect flight with Hawaiian Airlines, departs from Seattle / Tacoma International on Mon, 12 May, arriving in Incheon International.Inbound indirect flight with Air Premia, departs from Incheon International on Mon, 19 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,293, select.

Seoul.$1,322 per passenger.Departing Wed, 30 Apr, returning Wed, 7 May.Return flight with Alaska Airlines and Air Premia.Outbound indirect flight with Alaska Airlines, departs from Seattle / Tacoma International on Wed, 30 Apr, arriving in Incheon International.Inbound indirect flight with Air Premia, departs from Incheon International on Wed, 7 May, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,322, select.

Seoul.$1,460 per passenger.Departing Sat, 31 May, returning Wed, 4 Jun.Return flight with Alaska Airlines and Air Premia.Outbound indirect flight with Alaska Airlines, departs from Seattle / Tacoma International on Sat, 31 May, arriving in Incheon International.Inbound indirect flight with Air Premia, departs from Incheon International on Wed, 4 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,460, select.

Seoul.$1,466 per passenger.Departing Mon, 21 Apr, returning Tue, 23 Sep.Return flight with Spirit Airlines and WestJet.Outbound indirect flight with Spirit Airlines, departs from Seattle / Tacoma International on Mon, 21 Apr, arriving in Incheon International.Inbound indirect flight with WestJet, departs from Incheon International on Tue, 23 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,466, select.

Seoul.$1,502 per passenger.Departing Tue, 8 Apr, returning Tue, 15 Jul.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Seattle / Tacoma International on Tue, 8 Apr, arriving in Incheon International.Inbound indirect flight with China Airlines, departs from Incheon International on Tue, 15 Jul, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,502, select.

Seoul.$1,532 per passenger.Departing Tue, 1 Apr, returning Thu, 26 Jun.Return flight with China Airlines.Outbound indirect flight with China Airlines, departs from Seattle / Tacoma International on Tue, 1 Apr, arriving in Incheon International.Inbound indirect flight with China Airlines, departs from Incheon International on Thu, 26 Jun, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,532, select.

Seoul.$1,540 per passenger.Departing Mon, 7 Apr, returning Mon, 14 Apr.Return flight with Air Canada and Air Premia.Outbound indirect flight with Air Canada, departs from Seattle / Tacoma International on Mon, 7 Apr, arriving in Incheon International.Inbound indirect flight with Air Premia, departs from Incheon International on Mon, 14 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,540, select.

Seoul.$1,541 per passenger.Departing Sun, 17 Aug, returning Thu, 18 Sep.Return flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Sun, 17 Aug, arriving in Incheon International.Inbound indirect flight with WestJet, departs from Incheon International on Thu, 18 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,541, 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 May.

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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	$1,293
Cheapest month to fly	May
Average flight time	11 hrs, 46 mins
Most popular airline	Delta
Average flights per week	65

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 $1,293. 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 46 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 March 2025, there are 260 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 March 2025.

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 Monday, 12 May 2025.

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

Yes – the average flight time is 11 hours and 48 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.

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

There are a couple of main airports you can start your trip from in Seattle. Check out your options departing from Seattle-Tacoma International Airport (SEA) or Lake Union Sea Plane Base (LKE) when searching for a flight from Seattle to Incheon International Airport (ICN).
11 hours 53 minutes is the average time for a direct flight from Seattle to Incheon International Airport.
Seoul is 16 hours ahead of Seattle. Incheon International Airport is located in Seoul, which operates on the UTC+9 timezone.
Seattle-Tacoma International Airport (SEA) to Incheon International Airport (ICN) is the most popular route. There are 54 direct weekly departures to pick from. If you have things to do before heading off, take the last flight with Asiana Airlines at 14:20. Go for the first SEA to ICN departure operated by Delta at 10:20 if you want to get going earlier.
Get to the airport on time so you don't miss your flight from Seattle to ICN. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid any last-minute rush.
Peak months like July or holiday periods such as Thanksgiving and Christmas will mean longer waits at check-in and security. Play it safe and head to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of an international flight is a wise move.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

You can take a direct flight from Seattle to Incheon International Airport (ICN) out of Seattle-Tacoma International Airport (SEA).
Choose from a variety of airlines offering direct flights from Seattle to Incheon International Airport departing from SEA. Reserve your trip with one of these:
We make it simple to find a flight from Seattle to ICN with a stopover. To see all the options leaving from Seattle-Tacoma International Airport (SEA), deselect 'Direct flights only.' Then, simply select a flight with a stop long enough to explore the city of your choice. Popular stopovers between SEA and ICN include:
- Vancouver International Airport (YVR)
- Harry Reid Airport (formerly McCarran Airport) Airport (LAS)
- Narita International Airport (NRT)
The distance from central Seattle to SEA is around 23 kilometres. Use travel apps like Google Maps for the best way to get there, whether you're driving or taking public transport.
After a leisurely start to your journey? Stay near Seattle-Tacoma International Airport. Whether you're catching an early flight from Seattle to Incheon International Airport or just don't like being rushed, these hotels are ideal:

Lake Union Sea Plane Base (LKE)

Searching for more options for a direct flight from Seattle to Incheon International Airport (ICN)? Browse the fares jetting out of Lake Union Sea Plane Base (LKE).
When leaving from LKE, you can pick from a range of airlines that have direct flights from Seattle to ICN. Book your favourite window (or aisle) seat with any of these:
Split up your flight from Seattle to Incheon International Airport with a stop so you can freshen up or perhaps go somewhere you've never been before. Some great stopovers between Lake Union Sea Plane Base and ICN include:
- Vancouver International Airport (YVR)
- Narita International Airport (NRT)
- Calgary International Airport (YYC)
LKE is about 3 kilometres from central Seattle. It takes 11 minutes or so to get to the airport in a car from the city centre. Public transport takes approximately 23 minutes.
You're off on holiday, so why not enjoy an extra night away from home? Think about staying at one of these hotels near Lake Union Sea Plane Base the day before your flight from Seattle to ICN:

About Incheon International Airport (ICN)

The last thing you want is a lengthy journey to your hotel if you're getting in late on a flight from Seattle to Incheon International Airport. Check in to one of these accommodation options near ICN instead:

Getting from Incheon International Airport (ICN) to central Seoul

Central Seoul is around 48 kilometres from Incheon International Airport. Travel times by car rental or cab will vary based on traffic conditions, so do some research ahead of your trip.
It takes roughly 1 hour and 44 minutes if you're travelling by public transport.

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

For a one-way ticket from Seattle to Incheon International Airport, $691 is the best price we've seen. You can also book a return flight from just $1,293. These are the lowest fares right now and may vary depending on availability.
11 months is how far you'll want to book ahead to find flight tickets from Seattle to ICN.
The cheapest month for tickets from Seattle to Incheon International Airport is August. Use the 'Whole month' tool to find the most affordable day to fly if you're flexible with your departure dates.
Set up a Price Alert for flight tickets from Seattle to ICN. There's no need to search every day to find out if prices have dropped. We'll notify you the moment the price changes.
Personalise your trip by applying filters. Adjust the duration, number of stops, and departure and arrival times to find the right flight from Seattle to Incheon International Airport. You can also sort the results to see the 'Best,' 'Fastest' or 'Cheapest' options first.

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

April is the quietest time to travel to Seoul. Alternatively, join the crowds and take off in July. This is the busiest month for flights from Seattle to Incheon International Airport.
Think about the kind of weather that'll work with your plans for Seoul. August is known as the warmest month. Lock in your flights from Seattle to ICN sometime then and you can expect temperatures of between 19ºC and 32ºC.
If you want cooler conditions, search for a cheap flight from Seattle to Incheon International Airport in January when temperatures average between -12ºC and 4ºC.

More about Seoul

Start your Seoul trip off on the right foot by choosing the perfect place to stay. As soon as you've booked your flight from Seattle to Incheon International Airport, explore our selection of accommodation options including:
One of the best ways to experience Seoul is to visit its most popular sights. Highlights include Gyeongbokgung Palace, Bukchon Hanok Village and N Seoul Tower.

Complete your Seoul trip with a car rental

We use the same magic that helped you find your cheap flight from Seattle to Incheon International Airport to track down your ideal ride. Check out our car rentals in Seoul and compare offers in one place. Plus you'll find all the info you need to know, from the most popular car type to the best time to book.