Cheap Flights from Seattle (SEAA) to Seoul (SELA)

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Flight deals from Seattle to Seoul

Looking for a cheap last-minute deal or the best return flight from Seattle to Seoul? If you want to travel next month, return fares start from $1,222. Find the lowest prices on one-way and return tickets right here.

Seoul.$1,056 per passenger.Departing Sat, 1 Aug, returning Mon, 26 Oct.Return flight with Alaska Airlines and Air Busan.Outbound indirect flight with Alaska Airlines, departs from Seattle / Tacoma International on Sat, 1 Aug, arriving in Incheon International.Inbound indirect flight with Air Busan, departs from Incheon International on Mon, 26 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,056, select.

Seoul.$1,156 per passenger.Departing Tue, 15 Sep, returning Tue, 29 Sep.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 15 Sep, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Tue, 29 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,156, select.

Seoul.$1,161 per passenger.Departing Wed, 24 Feb, returning Sun, 28 Feb.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Wed, 24 Feb, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Sun, 28 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,161, select.

Seoul.$1,164 per passenger.Departing Tue, 13 Oct, returning Sun, 18 Oct.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 13 Oct, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Sun, 18 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,164, select.

Seoul.$1,165 per passenger.Departing Wed, 13 Jan, returning Wed, 20 Jan.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Wed, 13 Jan, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Wed, 20 Jan, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,165, select.

Seoul.$1,165 per passenger.Departing Wed, 10 Mar, returning Tue, 16 Mar.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Wed, 10 Mar, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Tue, 16 Mar, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,165, select.

Seoul.$1,165 per passenger.Departing Tue, 3 Nov, returning Mon, 9 Nov.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 3 Nov, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Mon, 9 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,165, select.

Seoul.$1,165 per passenger.Departing Tue, 24 Nov, returning Tue, 1 Dec.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 24 Nov, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Tue, 1 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,165, select.

Seoul.$1,167 per passenger.Departing Mon, 10 Aug, returning Mon, 14 Sep.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Mon, 10 Aug, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Mon, 14 Sep, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,167, select.

Seoul.$1,168 per passenger.Departing Tue, 19 Jan, returning Tue, 9 Feb.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 19 Jan, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Tue, 9 Feb, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,168, select.

Seoul.$1,168 per passenger.Departing Mon, 12 Apr, returning Mon, 19 Apr.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Mon, 12 Apr, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Mon, 19 Apr, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,168, select.

Seoul.$1,168 per passenger.Departing Mon, 19 Oct, returning Mon, 23 Nov.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Mon, 19 Oct, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Mon, 23 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,168, select.

Seoul.$1,168 per passenger.Departing Tue, 29 Sep, returning Mon, 19 Oct.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 29 Sep, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Mon, 19 Oct, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,168, select.

Seoul.$1,172 per passenger.Departing Mon, 31 Aug, returning Sun, 1 Nov.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Mon, 31 Aug, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Sun, 1 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,172, select.

Seoul.$1,174 per passenger.Departing Mon, 14 Sep, returning Mon, 30 Nov.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Mon, 14 Sep, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Mon, 30 Nov, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,174, select.

Seoul.$1,177 per passenger.Departing Tue, 15 Sep, returning Mon, 14 Dec.Return flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departs from Seattle / Tacoma International on Tue, 15 Sep, arriving in Incheon International.Inbound indirect flight with Cathay Pacific, departs from Incheon International on Mon, 14 Dec, arriving in Seattle / Tacoma International.Price includes taxes and charges.From $1,177, select.

Find the cheapest month to fly from Seattle to Seoul

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

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Direct flights from Seattle to Seoul

Alternative Seattle to Seoul routes

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

Gimpo International

17km from central Seoul

Closest

from $1,389

Search flights

Incheon International

48km from central Seoul

Cheapest

from $1,056

Search flights

Seattle to Seoul: Flight information

The things to know before you go.

Cheapest flight found	$1,056
Cheapest month to fly	August
Average flight time	11 hrs, 59 mins
Most popular airline	Delta
Average flights per week	236

Finding cheap flights from Seattle to Seoul: Frequently asked questions

How many airports are there in Seoul?

There are 2 airports in Seoul: Gimpo International and Incheon International.

How much are return flights from Seattle to Seoul?

The best price we found for a return flight from Seattle to Seoul is $1,056. 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 Seoul?

11 hours and 59 minutes is the average flight time from Seattle to Seoul.

Which airlines fly direct from Seattle to Seoul?

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

How many flights are there a week from Seattle to Seoul?

As of July 2026, there are 73 flights per week flying from Seattle to Seoul.

When is the cheapest time to fly from Seattle to Seoul?

The cheapest month to fly from Seattle to Seoul is usually August.

Which is the cheapest airport to fly into in Seoul?

If you're flying from Seattle, the cheapest airport near Seoul is Incheon International – which is 47.9 km away from the centre of Seoul. We've found flights into this airport from $1,056.

Which upcoming date is cheapest to fly from Seattle to Seoul on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Seoul on Saturday, 1 August 2026.

Can I get a direct flight from Seattle to Seoul?

Yes – the average flight time is 11 hours and 59 minutes.

How can I get the best flight deal from Seattle to Seoul?

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 Seoul 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.

What’s the weather like in Seoul?

In July, the average temperature is usually around 24°C. August is typically the warmest month in Seoul, when it usually averages around 28°C. You can expect the least rain in January. The coldest month is January, with temperatures averaging -8°C. The rainiest month is July.

Which is the cheapest airline to fly from Seattle to Seoul with?

The cheapest airline that flies to Seoul is Alaska Airlines. And the cheapest airline that flies to Incheon International Airport is Asiana Airlines.

Flying from Seattle to Seoul: what you need to know

Start your travel planning by considering where you'll board your flight from Seattle to Seoul. Seattle / Tacoma International Airport (SEA) and Seattle Lake Union SPB Airport (LKE) are the main airports in Seattle.
Step off your plane in Seoul at Incheon International Airport (ICN) or Gimpo International Airport (GMP).
Jump on a direct Seattle to Seoul flight and you'll be flying for an average of 11 hours 55 minutes.
The timezone in Seoul is UTC+9, which is 17 hours ahead of Seattle.
The busiest route for flights from Seattle to Seoul is Seattle / Tacoma International Airport (SEA) to Incheon International Airport (ICN). There are 24 services that connect these two airports each week.
For a stress-free start to your trip, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to board your Seattle to Seoul flight.
Be prepared for bigger queues during popular months like July. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a good idea.

How to find the cheapest flights from Seattle to Seoul

Score cheap Seattle to Seoul flights by booking three months ahead. According to our research, that's the ideal time for picking up a bargain.
The best month for scoring cheap plane tickets from Seattle to Seoul is August. Use the 'Whole month' tool to compare all available prices, then choose the dates offering the lowest fares.
There's no need to check back in every day to find out if fares have dropped when you set up a Price Alert. We'll tell you as soon as a better deal comes up on cheap flights from Seattle to Seoul.
Tailor your travel plans using filters. Pick your ideal arrival and departure times, airlines and total journey duration. You can also sort the results by 'Cheapest,' 'Fastest' or 'Best' Seattle to Seoul flights.

Flying from Seattle

Seattle / Tacoma International Airport (SEA)

If you're searching for a direct flight from Seattle to Seoul, you can leave from Seattle / Tacoma International Airport (SEA). Fly from SEA to Incheon International Airport (ICN) in one seamless journey.
There's a good selection of airlines that offer direct Seattle to Seoul plane tickets out of SEA. Take off with any of these:
We make it easy to find a Seattle to Seoul flight with a stopover. To see all the options departing from Seattle / Tacoma International Airport, uncheck 'Direct flights only.' Then, simply pick a flight with a stop long enough to see the sights of the city of your choice. Major stopovers include:
- Tokyo Haneda Airport (HND)
- Harry Reid International Airport (LAS)
- Vancouver International Airport (YVR)
The journey from central Seattle to SEA takes about 35 minutes on public transport. If you drive, ride-share or take a taxi, you'll cover the 19 kilometres in 25 minutes or so, depending on traffic.
Have an early flight from Seattle to Seoul? Avoid the last-minute rush to the terminal (and sneak in some extra precious sleep) by choosing one of these stays near Seattle / Tacoma International Airport:
Seattle / Tacoma International Airport has an excellent on-time performance, reducing the likelihood of delays. Departures from SEA make it to their destination as scheduled 80% of the time.

Arriving in Seoul

Incheon International Airport (ICN)

Incheon International Airport (ICN) is approximately 48 kilometres from central Seoul. If you're catching a taxi or a ride-share, the drive will take around 1 hour 5 minutes.
It usually takes 50 minutes to get there when travelling by public transport.
The last thing you want is a lengthy journey to your hotel if you're arriving on a late flight from Seattle to Seoul. Stay at one of these accommodation options near ICN instead:
Get on the fast track to adventure by picking up a Incheon International Airport rental car. Grab your wheels from WECAR, Hi Rent A Car or Alamo and explore beyond Seoul's usual tourist stops.
Lock in the best deal by booking your vehicle from Incheon International Airport around four weeks in advance of your trip.

Gimpo International Airport (GMP)

After your flight from Seattle to Seoul has landed, you can make your way to the city centre in around 30 minutes by car. Central Seoul is approximately 18 kilometres from Gimpo International Airport (GMP).
Public transport will get you there in around 35 minutes.
Hang the 'Do not disturb' sign on your door and relax at a hotel close to GMP. Here are a few options where you can settle in after your flight from Seattle to Seoul:
GOGO Rent a Car, Gogo Rental Car Seoul and Hi Rent A Car make collecting a Gimpo International Airport rental car easy and quick. These suppliers are located in or around the terminal and will have you ready to go in a flash.
Avoid potential price surges. Reserving your ride one week before your arrival at GMP can get you a lower rate.

Best time to go to Seoul

It's time to work out your trip dates for your flight from Seattle to Seoul. August is the busiest month to travel to Seoul. If you like a more relaxed atmosphere, go in March.
Lock in a Seattle to Seoul ticket departing in August if you're eager to explore the city during its warmest month. You can expect temperatures in Seoul to range from 19ºC (66ºF) to 32ºC (90ºF).
If you want to travel in cooler conditions, search for a cheap flight from Seattle to Seoul in January when temperatures average between -12ºC (10ºF) and 4ºC (39ºF).

More about Seoul

Start your Seoul trip right by choosing the perfect place to stay. As soon as you've booked your flight from Seattle to Seoul, browse our range of hotels including:
Every great holiday has to include a little sightseeing. Gyeongbokgung Palace, Bukchon Hanok Village and N Seoul Tower are must-visits when exploring Seoul.

Explore more of South Korea

Busan is just one of the many places in South Korea waiting to be explored once you've seen Seoul. Around 338 kilometres to the southeast, top sights here include Gamcheon Culture Village, Haeundae Beach and Oryukdo Skywalk.
Incheon is another sought-after destination in South Korea and is around 27 kilometres southwest of Seoul. No journey is complete without a visit to Songdo Central Park, Songdo Hanok Village and Wolmi Theme Park.