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Cheap Flights from Seattle to Incheon International

Compare Seattle to Incheon International flight deals

Find the cheapest month or even day of the year to fly to Incheon International

Book the best Incheon International fare with no extra fees

Flight deals from Seattle to Incheon International Airport

Looking for a cheap last-minute deal or the best return flight from Seattle to Incheon International Airport? If you want to travel next month, return fares start from R 14,976. Find the lowest prices on one-way and return tickets right here.
Seoul.R 7,167 per passenger.Departing Mon, 13 Apr.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Mon, 13 Apr, arriving in Incheon International.Price includes taxes and charges.From R 7,167, select.
Seoul.R 7,312 per passenger.Departing Wed, 9 Sep.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Wed, 9 Sep, arriving in Incheon International.Price includes taxes and charges.From R 7,312, select.
Seoul.R 7,312 per passenger.Departing Tue, 28 Jul.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Tue, 28 Jul, arriving in Incheon International.Price includes taxes and charges.From R 7,312, select.
Seoul.R 7,319 per passenger.Departing Wed, 19 Aug.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Wed, 19 Aug, arriving in Incheon International.Price includes taxes and charges.From R 7,319, select.
Seoul.R 7,407 per passenger.Departing Wed, 11 Nov.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Wed, 11 Nov, arriving in Incheon International.Price includes taxes and charges.From R 7,407, select.
Seoul.R 7,421 per passenger.Departing Fri, 16 Oct.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Fri, 16 Oct, arriving in Incheon International.Price includes taxes and charges.From R 7,421, select.
Seoul.R 7,499 per passenger.Departing Fri, 1 May.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Fri, 1 May, arriving in Incheon International.Price includes taxes and charges.From R 7,499, select.
Seoul.R 7,529 per passenger.Departing Tue, 16 Feb.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Tue, 16 Feb, arriving in Incheon International.Price includes taxes and charges.From R 7,529, select.
Seoul.R 7,546 per passenger.Departing Wed, 17 Mar.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Wed, 17 Mar, arriving in Incheon International.Price includes taxes and charges.From R 7,546, select.
Seoul.R 7,546 per passenger.Departing Wed, 27 Jan.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Wed, 27 Jan, arriving in Incheon International.Price includes taxes and charges.From R 7,546, select.
Seoul.R 8,588 per passenger.Departing Mon, 7 Dec.One-way flight with Asiana Airlines.Outbound direct flight with Asiana Airlines departs from Seattle / Tacoma International on Mon, 7 Dec, arriving in Incheon International.Price includes taxes and charges.From R 8,588, select.
Seoul.R 9,081 per passenger.Departing Mon, 8 Jun.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from Seattle / Tacoma International on Mon, 8 Jun, arriving in Incheon International.Price includes taxes and charges.From R 9,081, select.
Seoul.R 10,058 per passenger.Departing Mon, 30 Mar.One-way flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Mon, 30 Mar, arriving in Incheon International.Price includes taxes and charges.From R 10,058, select.
Seoul.R 11,025 per passenger.Departing Sun, 28 Jun.One-way flight with Korean Air.Outbound direct flight with Korean Air departs from Seattle / Tacoma International on Sun, 28 Jun, arriving in Incheon International.Price includes taxes and charges.From R 11,025, select.
Seoul.R 13,264 per passenger.Departing Mon, 30 Mar.One-way flight with Korean Air.Outbound direct flight with Korean Air departs from Seattle / Tacoma International on Mon, 30 Mar, arriving in Incheon International.Price includes taxes and charges.From R 13,264, 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 April.
Mar
from R 10,058
Apr
from R 7,167
May
from R 7,499
Jun
from R 9,081
Jul
from R 7,312
Aug
from R 7,319
Sep
from R 7,312
Oct
from R 7,421
Nov
from R 7,407
Dec
from R 8,588
Jan
from R 7,546
Feb
from R 7,529

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.

Gimpo International

17km from central Seoul
Closest
from R 8,362
Search flights

Incheon International

48km from central Seoul
Cheapest
from R 7,167
Search flights

Seattle to Seoul: Flight information

The things to know before you go.
Cheapest flight foundR 7,167
Cheapest month to flyApril
Average flight time11 hrs, 59 mins
Most popular airlineDelta
Average flights per week182

Check out these Seoul hotels

Ready to plan your stay? Other travellers rate these Seoul hotels for cleanliness, service and location.
Blue Mansion Seoul
8.47 km from city centre
R 1 159
Per night
Four Seasons Hotel Seoul
0.51 km from city centre
R 13 718
Per night
Hotel MyeongdongJang – Steps From Myeongdong Station & Market
0.74 km from city centre
R 3 227
Per night
Blue Mansion Seoul
8.47 km from city centre
R 1 159
Per night
Four Seasons Hotel Seoul
0.51 km from city centre
R 13 718
Per night
Hotel MyeongdongJang – Steps From Myeongdong Station & Market
0.74 km from city centre
R 3 227
Per night
Explore top-rated hotels

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

The best price we found for a return flight from Seattle to Incheon International is R 14,760. 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 59 minutes is the average flight time from Seattle to Incheon International.
Delta, Korean Air and Alaska Airlines fly direct from Seattle to Incheon International.
As of March 2026, there are 198 flights per week flying from Seattle to Incheon International.
The cheapest month to fly from Seattle to Incheon International is usually April.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Incheon International Airport on Friday, 24 April 2026.
Yes – the average flight time is 11 hours and 59 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 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.
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.
The cheapest airline that flies to Incheon International is Asiana Airlines .

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

  • Seattle-Tacoma International Airport (SEA) is Seattle's main airport. Explore your options for booking a flight from Seattle to Seoul Incheon International Airport (ICN) departing from here.

  • The average duration of a direct Seattle to Seoul Incheon International Airport flight is 11 hours 55 minutes.

  • Seoul Incheon International Airport is located in Seoul. The city operates on the UTC+9 timezone and is 17 hours ahead of Seattle.

  • You can pick from 26 direct services each week between Seattle-Tacoma International Airport (SEA) and Seoul Incheon International Airport (ICN). This is the most popular route when departing from Seattle.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are golden rules for stress-free travel. Be at the airport with enough time to board your flight from Seattle to ICN.

  • Travelling during a peak time like July? Popular periods (like Thanksgiving, Christmas/New Year and spring break) can easily add another hour at security. Play things extra safe and arrive up to four hours ahead of an international flight and two hours before 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 Seoul Incheon International Airport (ICN) take off from this terminal.

  • At SEA, there's a range of carriers that operate direct flights from Seattle to Seoul Incheon International Airport, such as:

  • The majority of passengers prefer to fly with Delta between SEA and ICN.

  • Delta is the top performer for punctuality on this route.

  • A stopover is the ideal opportunity to break up your trip and perhaps even explore a different city. When searching for cheap flights from Seattle to ICN leaving from Seattle-Tacoma International Airport (SEA), uncheck the 'Direct flights only' box to find out where you can stop along the way. Here's where you could connect through:

    • Las Vegas Harry Reid International Airport (LAS)

    • Vancouver International Airport (YVR)

    • Tokyo Narita International Airport (NRT)

  • SEA is about 23 kilometres from central Seattle. If you're ride-sharing, driving or catching a taxi from the centre, it'll take you 25 minutes or so to get there, depending on traffic. If you're planning to take public transport, expect the journey time to be around 35 minutes.

  • Want an easy start to your travels? Stay near Seattle-Tacoma International Airport. Whether you're catching an early flight from Seattle to Seoul Incheon International Airport or just don't want to be rushed, these hotels are just what you're after:

  • Seattle-Tacoma International Airport has a strong on-time record, so flight disruptions are less likely. Departures from SEA arrive at their destination as scheduled 81% of the time.

Seattle Paine Field International Airport (PAE)

  • You can arrive at PAE from central Seattle in approximately 40 minutes by car, depending on traffic conditions. The ride on public transport takes roughly 1 hour 30 minutes to travel the 40 kilometres or so.

  • Want to treat yourself to an extra night away before boarding your Seattle to ICN flight? Check in to a hotel near Seattle Paine Field International Airport before your trip officially begins. These stays have your key waiting:

  • Seattle Paine Field International Airport has a strong track record for reliability and timeliness. 80% of flights out of here land when expected.

About Seoul Incheon International Airport (ICN)

Getting from Seoul Incheon International Airport (ICN) to central Seoul

  • Central Seoul is around 48 kilometres from Seoul Incheon International Airport and takes about 1 hour 5 minutes to reach by car. See what your options are for getting into town, whether that's with a car hire, taxi or ride-share.

  • Travelling on public transport takes around 50 minutes.

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

  • The cheapest price we've found for a one-way ticket from Seattle to Seoul Incheon International Airport is R 7,167. For a return flight on this route, the best price is R 14,760. Depending on the availability when you book, these fares could change.

  • To snap up cheap flights from Seattle to ICN, book your ticket three months ahead of your departure date.

  • Schedule your trip for August. That's the best month for scoring an incredible deal on Seattle to Seoul Incheon International Airport tickets. If your travel dates are flexible, use the 'Whole month' tool to find the cheapest price across each month.

  • Spend less time searching for cheap plane tickets from Seattle to ICN by creating a Price Alert. We'll send you an email or notification through the app when a lower fare pops up.

  • Bag the best deal on a flight from Seattle to Seoul Incheon International Airport with the help of the filters. Choose your preferred arrival and departure times, airlines and number of stops. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest.'

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

  • September is the quietest month for flights from Seattle to Seoul Incheon International Airport (ICN), while February is the most popular. Work out the best time to go to Seoul based on whether you want a bustling atmosphere or a more laid-back vibe.

  • Lock in a Seattle to ICN plane ticket departing in August if you're eager to experience the city during its warmest month. Expect temperatures in Seoul to range from 19ºC (66ºF) to 32ºC (90ºF).

  • Search for cheap tickets from Seattle to Seoul Incheon International Airport in January if you'd rather travel when it's cooler. Temperatures are at their lowest then, ranging between -12ºC (10ºF) and 4ºC (39ºF).

More about Seoul

  • When it comes to looking for somewhere to lay your head, you'll find the best stays in Seoul right here. Explore these options as soon as you've booked your flight from Seattle to Seoul Incheon International Airport:

  • You'll find plenty of exciting things to do in Seoul when you're ready to sightsee. Kick off your exploring at Gyeongbokgung Palace followed by Bukchon Hanok Village and N Seoul Tower.

Explore more of South Korea

  • You've visited Seoul, now it's time to explore other corners of South Korea. Journey around 257 kilometres southeast to Daegu to tick off its must-visit sights. From Modern Art Statue to Jung-gu District and Alive Aquarium Daegu, there's plenty to keep you on the go.

  • If you're interested in discovering another major stop in South Korea, head for Daejeon, roughly 153 kilometres southeast of Seoul. National Science Museum, Temi Park and Yuseong Hot Springs are key reasons to visit.

More travel options

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