An Alaska Airlines plane taking off with a snow-capped mountain in the background.

Cheap Flights from Seoul (ICN) to Seattle (SEA)

View AU$700 flight on Tue, 1 Dec 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Seattle-Tacoma International Airport (SEA)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 35% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Seoul (ICN) to Seattle (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 15 Oct - Thu, 29 Oct
ICN
Seoul
SEA
Seattle
AU$1,173 Return, found 2 days ago
AU$1,173
Return
found 2 days ago
Select United flight, departing Thu, 15 Oct from Seoul to Seattle, returning Thu, 29 Oct, priced at AU$1,173 found 2 days ago
Philippine Airlines
Sun, 2 May - Sun, 30 May
ICN
Seoul
SEA
Seattle
AU$1,207 Return, found 1 day ago
AU$1,207
Return
found 1 day ago
Select Philippine Airlines flight, departing Sun, 2 May from Seoul to Seattle, returning Sun, 30 May, priced at AU$1,207 found 1 day ago
Asiana Airlines
Fri, 18 Dec - Mon, 28 Dec
ICN
Seoul
SEA
Seattle
AU$1,208 Return, found 4 days ago
AU$1,208
Return
found 4 days ago
Select Asiana Airlines flight, departing Fri, 18 Dec from Seoul to Seattle, returning Mon, 28 Dec, priced at AU$1,208 found 4 days ago
Air Canada
Thu, 15 Oct - Thu, 29 Oct
ICN
Seoul
SEA
Seattle
AU$1,245 Return, found 2 days ago
AU$1,245
Return
found 2 days ago
Select Air Canada flight, departing Thu, 15 Oct from Seoul to Seattle, returning Thu, 29 Oct, priced at AU$1,245 found 2 days ago
Alaska Airlines
Thu, 15 Oct - Thu, 29 Oct
ICN
Seoul
SEA
Seattle
AU$1,291 Return, found 2 days ago
AU$1,291
Return
found 2 days ago
Select Alaska Airlines flight, departing Thu, 15 Oct from Seoul to Seattle, returning Thu, 29 Oct, priced at AU$1,291 found 2 days ago
Korean Air
Fri, 18 Dec - Mon, 28 Dec
ICN
Seoul
SEA
Seattle
AU$1,381 Return, found 4 days ago
AU$1,381
Return
found 4 days ago
Select Korean Air flight, departing Fri, 18 Dec from Seoul to Seattle, returning Mon, 28 Dec, priced at AU$1,381 found 4 days ago
Delta
Fri, 18 Dec - Mon, 28 Dec
ICN
Seoul
SEA
Seattle
AU$1,381 Return, found 4 days ago
AU$1,381
Return
found 4 days ago
Select Delta flight, departing Fri, 18 Dec from Seoul to Seattle, returning Mon, 28 Dec, priced at AU$1,381 found 4 days ago
American Airlines
Thu, 15 Oct - Thu, 29 Oct
ICN
Seoul
SEA
Seattle
AU$1,398 Return, found 2 days ago
AU$1,398
Return
found 2 days ago
Select American Airlines flight, departing Thu, 15 Oct from Seoul to Seattle, returning Thu, 29 Oct, priced at AU$1,398 found 2 days ago
Singapore Airlines
Thu, 15 Oct - Thu, 29 Oct
ICN
Seoul
SEA
Seattle
AU$1,417 Return, found 2 days ago
AU$1,417
Return
found 2 days ago
Select Singapore Airlines flight, departing Thu, 15 Oct from Seoul to Seattle, returning Thu, 29 Oct, priced at AU$1,417 found 2 days ago
EVA Airways
Thu, 15 Oct - Thu, 29 Oct
ICN
Seoul
SEA
Seattle
AU$1,587 Return, found 2 days ago
AU$1,587
Return
found 2 days ago
Select EVA Airways flight, departing Thu, 15 Oct from Seoul to Seattle, returning Thu, 29 Oct, priced at AU$1,587 found 2 days ago

Frequently asked questions

How much does a flight from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) cost?
You can find one-way and return flights from ICN to SEA with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when ICN to SEA ticket fares go up or down.
What is the cheapest month to fly from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The cheapest months to fly from ICN to SEA are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are 3 airlines offering direct flights from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Here are the carriers:
  • Korean Air operates 7 direct flights from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
  • Delta operates 7 direct flights from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
  • Asiana Airlines operates 7 direct flights from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.

How do I find cheap flights from Seoul (ICN) to Seattle, WA (SEA)?
To find a cheap flight from Seoul (ICN) to Seattle, WA (SEA), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best airline to fly with from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will differ from traveler to traveler. If you like to fly early, Korean Air offers early morning flights. If price is the most important factor, Alaska Airlines typically offers the lowest fares. Korean Air offers the most daily flights from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll find around 3 nonstop flights per day from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). For even more choices, look at flights that include layovers, as there are approximately 72 connecting flights per day. Some common connection points include Hong Kong Intl. (HKG), Taoyuan Intl. (TPE), and San Francisco Intl. (SFO).
What is the earliest flight from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs around 12:10 AM local time. This service is offered by Turkish Airlines. This is a seasonal service, active in February, March, and December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on a Friday, with around 36 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Korean Air, Asiana Airlines, and Cathay Pacific. Flight schedules are quite consistent throughout the week, so you'll have a good selection of flights on other days too.
What are the most popular departure times for flights from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the afternoon, from 3pm to 6pm. Many major carriers, including Korean Air, Air Canada and United, offer flights during this window. Many travellers prefer this time as it allows for a full day of activities before heading to the airport, and you'll arrive in Seattle at a reasonable hour.
How long does it take to fly from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
A nonstop flight from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically takes around 10 hours. This route covers a distance of approximately 8,377 kilometres. If you opt for a one-stop flight, your travel time will be longer, usually around 17 hours, while flights with two or more stops can take about 24 hours and 18 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic, so it's always a good idea to factor in some extra time when planning your trip.
Can you fly business or first class from Seoul (ICN-Incheon Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Yes, you can fly business class or first class between Seoul (ICN) and Seattle, WA (SEA).Airlines that offer business class service on this route include:
  • Korean Air
  • China Eastern Airlines
  • Jeju Air
  • Cathay Pacific
  • Singapore Airlines
  • Turkish Airlines
  • Emirates
  • WestJet
  • Air Canada
  • Asiana Airlines
  • Alaska Airlines
  • Philippine Airlines
  • Qatar Airways
  • United
  • Delta
  • Hawaiian Airlines
  • Air China
  • Finnair
  • China Airlines
  • EVA Airways

First class cabins are available on Korean Air and Emirates.
How do I earn miles on a Seoul (ICN) to Seattle, WA (SEA) flight with Expedia?
It's easy to earn miles on a Seoul (ICN) to Seattle, WA (SEA) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle, WA (SEA) from Seoul (ICN)?
If you're planning to travel to Seattle from Incheon Intl. (ICN), you can fly directly into Seattle - Tacoma Intl. (SEA). Some flights may connect through major hubs like Hong Kong Intl. (HKG), Narita Intl. (NRT), or Kansai Intl. (KIX) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seoul (ICN) to Seattle, WA (SEA) at the last minute?
Typically, booking a last minute flight from Seoul (ICN) to Seattle, WA (SEA) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seoul (ICN) to Seattle, WA (SEA) flight and hotel package?
Securing a Seoul (ICN) to Seattle, WA (SEA) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seoul (ICN) to Seattle, WA (SEA)?
If you booked your Seoul (ICN) to Seattle, WA (SEA) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Incheon Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Air France, Alaska Airlines, All Nippon Airways, Asiana Airlines, Cathay Pacific, Delta, EVA Airways, Emirates, KLM, Korean Air, Qatar Airways, Singapore Airlines, United, WestJet
Return price
AU$1,172
Distance
8326 km
Average flight time
-5 hours -31 mins

Book with confidence

Your quick guide to flights from Seoul to Seattle

Pick up great flights from Seoul to Seattle

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Seoul to Seattle. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Seoul to Seattle that take around hours.

Find cheap flights from Seoul to Seattle

From the great flight deals with prices currently ranging from AU$1,173 to AU$1,587, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Seoul to Seattle around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Seattle is normally in October.

Reasons to book your flight from Seoul to Seattle with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Seoul to Seattle across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Seattle right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from Seoul to Seattle

Explore a world of travel with Expedia

*Available to Expedia members.