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Cheap Flights from Seattle / Tacoma International to Seoul

Compare Seattle / Tacoma International to Seoul flight deals

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

Book the best Seoul fare with no extra fees

Flight deals from Seattle / Tacoma International to Seoul

Looking for a cheap last-minute deal or the best round-trip flight from Seattle / Tacoma International Airport to Seoul? If you want to travel next month, round-trip fares start from AED 4,080. Find the lowest prices on one-way and round-trip tickets right here.
Seoul.AED 1,364 per passenger.Departing Sat, Aug 22.One-way flight with WestJet.Outbound indirect flight with WestJet, departing from Seattle / Tacoma International on Sat, Aug 22, arriving in Incheon International.Price includes taxes and charges.From AED 1,364, select.
Seoul.AED 1,491 per passenger.Departing Mon, Jul 27.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Mon, Jul 27, arriving in Incheon International.Price includes taxes and charges.From AED 1,491, select.
Seoul.AED 1,770 per passenger.Departing Tue, Sep 8.One-way flight with Cathay Pacific.Outbound indirect flight with Cathay Pacific, departing from Seattle / Tacoma International on Tue, Sep 8, arriving in Incheon International.Price includes taxes and charges.From AED 1,770, select.
Seoul.AED 1,935 per passenger.Departing Wed, Jun 10.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Wed, Jun 10, arriving in Incheon International.Price includes taxes and charges.From AED 1,935, select.
Seoul.AED 2,009 per passenger.Departing Mon, Oct 12.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Mon, Oct 12, arriving in Incheon International.Price includes taxes and charges.From AED 2,009, select.
Seoul.AED 2,013 per passenger.Departing Tue, Nov 10.One-way flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Seattle / Tacoma International on Tue, Nov 10, arriving in Incheon International.Price includes taxes and charges.From AED 2,013, select.
Seoul.AED 2,024 per passenger.Departing Fri, Aug 14.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Fri, Aug 14, arriving in Incheon International.Price includes taxes and charges.From AED 2,024, select.
Seoul.AED 2,109 per passenger.Departing Tue, Dec 1.One-way flight with Hainan Airlines.Outbound indirect flight with Hainan Airlines, departing from Seattle / Tacoma International on Tue, Dec 1, arriving in Incheon International.Price includes taxes and charges.From AED 2,109, select.
Seoul.AED 2,152 per passenger.Departing Sat, Sep 19.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Sat, Sep 19, arriving in Incheon International.Price includes taxes and charges.From AED 2,152, select.
Seoul.AED 2,153 per passenger.Departing Fri, Oct 23.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Fri, Oct 23, arriving in Incheon International.Price includes taxes and charges.From AED 2,153, select.
Seoul.AED 2,158 per passenger.Departing Mon, Feb 22.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Mon, Feb 22, arriving in Incheon International.Price includes taxes and charges.From AED 2,158, select.
Seoul.AED 2,174 per passenger.Departing Mon, Nov 16.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Mon, Nov 16, arriving in Incheon International.Price includes taxes and charges.From AED 2,174, select.
Seoul.AED 2,204 per passenger.Departing Tue, Jan 12.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Tue, Jan 12, arriving in Incheon International.Price includes taxes and charges.From AED 2,204, select.
Seoul.AED 2,205 per passenger.Departing Tue, Mar 9.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Tue, Mar 9, arriving in Incheon International.Price includes taxes and charges.From AED 2,205, select.
Seoul.AED 2,211 per passenger.Departing Wed, Apr 28.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Wed, Apr 28, arriving in Incheon International.Price includes taxes and charges.From AED 2,211, select.
Seoul.AED 2,270 per passenger.Departing Tue, Jun 30.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departing from Seattle / Tacoma International on Tue, Jun 30, arriving in Incheon International.Price includes taxes and charges.From AED 2,270, select.

Find the cheapest month to fly from Seattle / Tacoma International to Seoul

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle / Tacoma International to Seoul flights are currently cheapest in August.
May
from AED 2,442
Jun
from AED 1,935
Jul
from AED 1,491
Aug
from AED 1,364
Sep
from AED 1,770
Oct
from AED 2,009
Nov
from AED 2,013
Dec
from AED 2,109
Jan
from AED 2,204
Feb
from AED 2,158
Mar
from AED 2,205
Apr
from AED 2,211

Direct flights from Seattle / Tacoma International to Seoul

Alternative Seattle / Tacoma International to Seoul routes

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

Gimpo International

17km from central Seoul
Closest
from AED 2,060
Search flights

Incheon International

48km from central Seoul
Cheapest
from AED 1,364
Search flights

Seattle to Seoul: Flight information

The things to know before you go.
Cheapest flight foundAED 1,364
Cheapest month to flyAugust
Average flight time11 hrs, 58 mins
Most popular airlineDelta
Average flights per week54

Finding cheap flights from Seattle / Tacoma International to Seoul: Frequently asked questions

There are 2 airports in Seoul: Gimpo International and Incheon International.
The best price we found for a round-trip flight from Seattle / Tacoma International to Seoul is AED 3,051. 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.
11 hours and 58 minutes is the average flight time from Seattle / Tacoma International to Seoul.
Delta, Korean Air and Alaska Airlines fly direct from Seattle / Tacoma International to Seoul.
There are 54 flights per week flying from Seattle / Tacoma International to Seoul, as of May 2026.
The cheapest month to fly from Seattle / Tacoma International to Seoul is usually September.
If you're flying from Seattle / Tacoma International Airport, the cheapest airport near Seoul is Incheon International – which is 47.8 km away from the center of Seoul. We've found flights to this airport from AED 3,051.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Seattle / Tacoma International Airport to Seoul on Tuesday, September 1, 2026.
Yes – the average flight time is 11 hours and 58 minutes.
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.
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.
In May, the average temperature is usually around 15°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.
Currently, Cathay Pacific and Asiana Airlines offer the cheapest flight tickets to Seoul.

Traveling from Seattle-Tacoma International Airport (SEA) to Seoul: what you need to know

  • Jump on a direct flight from Seattle-Tacoma International Airport to Seoul and you'll be in the air for around 10 hours 10 minutes.

  • Seoul is 17 hours ahead of Seattle, where Seattle-Tacoma International Airport is located. Seoul runs on the UTC+9 timezone.

  • Choose from 29 services each week between Seattle-Tacoma International Airport (SEA) and Seoul Incheon International Airport (ICN). This is the most popular flight route.

  • Leave enough time to catch your SEA to Seoul flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

  • You can expect bigger queues in popular months such as July. Arriving up to four hours ahead of international flights and two hours for domestic departures will give you plenty of time for security and boarding.

  • Direct Seattle-Tacoma International Airport to Seoul tickets are available for booking. Seoul Incheon International Airport (ICN) is where you'll be touching down.

  • Multiple airlines offer direct flights from Seattle-Tacoma International Airport to Seoul. The most popular include:

  • Think about adding a stopover to potentially land a cheaper plane ticket from SEA to Seoul. All you need to do is deselect 'Direct flights only' during your search. Give yourself a breather (and maybe even a better deal) by stopping at one of these airports:

    • Tokyo Haneda International Airport (HND)

    • Las Vegas Harry Reid International Airport (LAS)

    • Vancouver International Airport (YVR)

  • Located around 18 kilometers from central Seattle, SEA can be reached in about 25 minutes by car, depending on traffic. The journey on public transport takes roughly 35 minutes.

  • Searching for a hotel near SEA? If you're catching an early flight from Seattle-Tacoma International Airport to Seoul, these accommodation options will get you from your pillow to the plane in no time:

  • Seattle-Tacoma International Airport maintains a strong on-time record, so you're less likely to experience disruptions. Departures from SEA land on schedule 80% of the time.

How to find the cheapest flights from Seattle-Tacoma International Airport (SEA) to Seoul

  • AED 1,364 is currently the best price for a one-way Seattle-Tacoma International Airport to Seoul flight. Return plane tickets start from AED 3,051. These fares may change based on demand and availability.

  • Lock in cheap flights from SEA to Seoul by booking three months ahead. Based on our research, that's the sweet spot for bagging a bargain.

  • Schedule your trip for August. That's the best month for landing the biggest deals on Seattle-Tacoma International Airport to Seoul tickets. If you're open to different travel dates, use the 'Whole month' tool to find the lowest price across each month.

  • Picking up a cheap flight from SEA to Seoul is easy with Price Alerts. All you need to do is create one of these automatic notifications and we'll let you know as soon as there's a better deal.

  • Tailor your flights with filters. Choose your departure and arrival times, total journey duration and airlines. You can also sort your results by 'Cheapest,' 'Fastest' or 'Best' flights from Seattle-Tacoma International Airport to Seoul.

Airports in Seoul

Seoul Incheon International Airport (ICN)

  • Seoul Incheon International Airport (ICN) is around 48 kilometers from central Seoul. If you're opting for a ride-share or a cab, the drive will take roughly 1 hour 5 minutes.

  • When traveling by public transport, expect a journey time of about 50 minutes.

  • Think about booking a hotel close to ICN if you're coming in on a late flight from Seattle-Tacoma International Airport to Seoul. Check in to one of these accommodation options and make your first night all about rest:

  • To secure the lowest price, reserve your vehicle from Seoul Incheon International Airport about four weeks ahead of your flight from SEA to Seoul.

Seoul Gimpo International Airport (GMP)

  • After your flight from Seattle-Tacoma International Airport to Seoul has touched down, you can make your way to the city center in about 30 minutes by car. Central Seoul is roughly 16 kilometers from Seoul Gimpo International Airport (GMP).

  • If you choose to travel on public transport, you'll reach the center in 35 minutes or so.

  • After stepping off your SEA to Seoul flight, tuck yourself in at a hotel close to GMP. These are some comfortable accommodation options that'll help you get into relaxation mode:

  • Call dibs on the best options. Securing your ride from GMP one week in advance often means lower prices and a greater selection of vehicles.

Best time to go to Seoul

  • December is the quietest month for flights from Seattle-Tacoma International Airport to Seoul, while January is the busiest. Find the best time to go to Seoul based on whether you like a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Seoul is August, with temperatures ranging between 19ºC (66ºF) and 32ºC (90ºF). Lock in your Seattle-Tacoma International Airport to Seoul plane ticket then if that's your ideal forecast.

  • Search for cheap tickets from SEA to Seoul in January if you'd rather travel during cooler conditions. Temperatures are at their lowest then, ranging between -12ºC (10ºF) and 4ºC (39ºF) on average.

More about Seoul

  • When it comes to looking for somewhere to lay your head, you'll find the best places to stay in Seoul right here. Browse these options once you've booked your flight from Seattle-Tacoma International Airport to Seoul:

  • Bukchon Hanok Village and Gyeongbokgung Palace are a couple of major attractions to put on your Seoul travel itinerary. Keep the momentum going by heading to N Seoul Tower.

Explore more of South Korea

  • You've seen Seoul, now it's time to explore other parts of South Korea. Travel about 322 kilometers southeast to Busan to tick off its top sights. From Gamcheon Culture Village to Haeundae Beach and Beautiful View Busan - Diamond Bridge, there's plenty to keep you busy.

  • Around 241 kilometers southeast of Seoul, Daegu is another favorite stop in South Korea. Get a taste of what this destination has to offer at Alive Aquarium Daegu, Nature Park and Seonsa Historical Park.

More travel options

Plan the rest of your trip from Seattle to Seoul

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.