383 € Cheap Flights from Seoul to Seattle / Tacoma International

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Flight deals from Seoul to Seattle / Tacoma International

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

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

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

Direct flights from Seoul to Seattle / Tacoma International

Seoul to Seattle / Tacoma International: Alternative routes

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

Seoul to Seattle: Flight information

The things to know before you go.
Cheapest flight found383 €
Cheapest month to flyMay
Average flight time10 hrs, 12 mins
Most popular airlineDelta
Average flights per week68

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

The best price we found for a return flight from Seoul to Seattle / Tacoma International is 383 €. 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.
10 hours and 12 minutes is the average flight time from Seoul to Seattle / Tacoma International.
Delta, Korean Air and Alaska Airlines fly direct from Seoul to Seattle / Tacoma International.
As of February 2026, there are 68 flights per week flying from Seoul to Seattle / Tacoma International.
The cheapest month to fly from Seoul to Seattle / Tacoma International is usually May.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seoul to Seattle / Tacoma International Airport on Thursday, 21 May 2026.
Yes – the average flight time is 10 hours and 12 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 Seattle / Tacoma 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.
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.

Travelling from Seoul to Seattle-Tacoma International Airport (SEA): What you need to know

  • Start your holiday planning by working out where you'll board your flight from Seoul to Seattle-Tacoma International Airport (SEA). Incheon International Airport (ICN) and Gimpo International Airport (GMP) are Seoul's main airports.

  • Around 10 hours 15 minutes is how long you can expect to be travelling on a direct Seoul to Seattle-Tacoma International Airport flight.

  • The timezone in Seattle is UTC-7, which is 16 hours behind Seoul. Seattle-Tacoma International Airport is located in Seattle.

  • With 20 direct weekly flights between the two airports, Incheon International Airport (ICN) to Seattle-Tacoma International Airport (SEA) is the most popular route. Korean Air operates the earliest flight at 4:10pm. If you're eager to make the most of your day before jetting off, the last departure from ICN to SEA is with Delta Air Lines at 8:05pm.

  • Arrive at the airport on time so you don't miss your flight from Seoul to SEA. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid the mad dash to your gate.

  • If you're taking off during a major holiday or other peak period, allow extra time. Arrive two hours before domestic flights and up to four hours before international departures. Lines at security and check-in will be longer.

Airports in Seoul

Incheon International Airport (ICN)

  • Incheon International Airport (ICN) offers an easy route to your destination. Nonstop flights from Seoul to Seattle-Tacoma International Airport (SEA) take off from this terminal.

  • Well-known airlines that operate direct flights from Seoul to Seattle-Tacoma International Airport departing ICN include:

  • Delta Air Lines is the most frequently booked airline offering flights from ICN to SEA.

  • The carrier with the best on-time arrival rate on this route is Delta Air Lines.

  • We make it easy to book cheap flights from Seoul to SEA with a stopover. To explore all your options leaving from Incheon International Airport (ICN), uncheck 'Direct flights only.' Then, pick a flight offering a stop long enough to tour the city of your choice. Top stopovers between ICN and SEA include:

    • Vancouver International Airport (YVR)

    • Narita International Airport (NRT)

    • Calgary International Airport (YYC)

  • The distance from central Seoul to ICN is roughly 48 kilometres. Use travel apps like Google Maps for the quickest way to get there, whether you prefer to drive or use public transport.

  • Searching for a comfortable hotel near Incheon International Airport? If you're catching an early flight from Seoul to Seattle-Tacoma International Airport, these accommodation options will have you sleeping moments from your departure lounge:

  • When it comes to the on-time performance of Incheon International Airport, 54.5% of flights complete their journey on time.

Gimpo International Airport (GMP)

  • Add a little extra to your holiday with a stopover on your flight from Seoul to Seattle-Tacoma International Airport. Haneda Airport (HND) is one of the main options between Gimpo International Airport and SEA.

  • The distance from Seoul's city centre to GMP is about 16 kilometres. Consider transport options and potential delays when working out the best way to get to the airport.

  • Get a head start on your holiday with an additional night away from home. Before catching your Seoul to SEA flight, stay in one of these hotels close to Gimpo International Airport:

  • Gimpo International Airport has an on-time performance rate of 75.94%. This figure provides insight into how frequently flights that depart from this airport reach their destination on schedule.

About Seattle-Tacoma International Airport (SEA)

Getting from Seattle-Tacoma International Airport (SEA) to central Seattle

  • Central Seattle is roughly 18 kilometres from Seattle-Tacoma International Airport. Travel times by car hire or cab will vary depending on time of day, so do a little research before you go.

  • If you're taking public transport, expect a journey time of about 55 minutes.

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

  • The lowest price we've found for a one-way ticket from Seoul to Seattle-Tacoma International Airport is 297 €. For a return flight on this route, the best price is 383 €. Depending on the availability when you book, these fares could change.

  • Don't leave everything to the last minute. You're more likely to walk away with cheap flights from Seoul to SEA if you book ahead. Airlines often offer some great early bird rates.

  • If you have some flexibility with your travel plans, use the 'Whole month' search tool. It'll show you the lowest price in each month when searching for your Seoul to Seattle-Tacoma International Airport ticket.

  • Finding a cheap plane ticket from Seoul to SEA is a piece of cake with Price Alerts. All you need to do is set up one of these automatic alerts and we'll get in touch as soon as there's a price drop.

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

The best time to fly from Seoul to Seattle-Tacoma International Airport (SEA)

  • May is the quietest month for flights from Seoul to Seattle-Tacoma International Airport (SEA), while July is the busiest. Figure out the ideal time to go to Seattle based on whether you want a bustling atmosphere or a more laid-back vibe.

  • Before locking in your Seoul to SEA plane ticket, consider the weather you're most comfortable in. August is the warmest month in Seattle, with temperatures ranging from 12ºC (54ºF) to 28ºC (82ºF).

  • If you like travelling in cooler conditions, search for a cheap ticket from Seoul to Seattle-Tacoma International Airport in February when temperatures are between -1ºC (30ºF) and 11ºC (52ºF).

More about Seattle

  • Once you've booked your flight from Seoul to Seattle-Tacoma International Airport, find a hotel that puts you in a great location. Make one of these options your base for exploring Seattle:

  • Every great adventure has to include some sightseeing. Pike Place Market, Space Needle and Seattle Skyline are attractions you won't want to skip in Seattle.

Explore more of the United States

  • You've visited Seattle, now it's time to discover more of the United States. Journey around 209 kilometres south to Portland to check off its must-visit sights. From Portland Japanese Garden to Voodoo Doughnut and Great Northwest, your itinerary will be busy.

  • If you're interested in discovering another side of the United States, head for Vancouver, about 209 kilometres south of Seattle. Vancouver Waterfront, Reconstructed HBC Fort Vancouver and Fort Vancouver National Historic Site Garden are key highlights.

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