SEA - SEL

$406 Find Cheap Flights from Seattle to Seoul

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Seoul departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Seoul

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Seoul.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Seoul.
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Useful Info
Flights Deals

Cheap Flight Deals from Seattle to Seoul (SEA-SEL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Seoul that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Seattle to Seoul

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Seoul.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
4:30 pm - 11:20 amSEA-GMP
26h 50m1 stop
 Logo
7:55 pm - 2:25 pmGMP-SEA
34h 30m1 stop
Sat, Jun 7 - Mon, Jun 16
Air Canada Logo
5:30 am - 4:05 pmSEA-ICN
18h 35m1 stop
Air Canada Logo
5:45 pm - 2:13 pmICN-SEA
12h 28m1 stop
$616Air Canada
Find Deal
Sat, Jun 7 - Mon, Jun 16
WestJet Logo
7:05 am - 6:45 pmSEA-ICN
19h 40m1 stop
WestJet Logo
8:45 pm - 8:29 pmICN-SEA
15h 44m1 stop
$926WestJet
Find Deal
Mon, Aug 25 - Mon, Sep 15
China Airlines Logo
1:40 am - 7:35 pmSEA-ICN
25h 55m1 stop
China Airlines Logo
8:35 pm - 7:20 pmICN-SEA
14h 45m1 stop
$954China Airlines
Find Deal
Sun, Aug 31 - Thu, Oct 23
China Airlines Logo
1:40 am - 11:15 amSEA-ICN
17h 35m1 stop
China Airlines Logo
8:35 pm - 7:45 pmICN-SEA
15h 10m1 stop
$967China Airlines
Find Deal
Sat, Aug 30 - Mon, Sep 8
EVA Air Logo
12:30 am - 11:00 amSEA-ICN
18h 30m1 stop
EVA Air Logo
12:00 pm - 7:30 pmICN-SEA
23h 30m1 stop
$974EVA Air
Find Deal
Mon, Sep 1 - Thu, Sep 18
EVA Air Logo
12:30 am - 11:00 amSEA-ICN
18h 30m1 stop
EVA Air Logo
7:45 pm - 7:30 pmICN-SEA
15h 45m1 stop
$977EVA Air
Find Deal
Tue, Sep 16 - Wed, Sep 24
WestJet Logo
7:05 am - 6:45 pmSEA-ICN
19h 40m1 stop
WestJet Logo
8:45 pm - 2:09 pmICN-SEA
33h 24m2 stops
$983WestJet
Find Deal
Mon, Aug 25 - Mon, Sep 15
Turkish Airlines Logo
7:10 pm - 5:40 pmSEA-ICN
30h 30m1 stop
Turkish Airlines Logo
10:25 am - 10:35 amICN-SEA
40h 10m1 stop
$1,039Turkish Airlines
Find Deal
Mon, Jul 21 - Wed, Aug 6
Turkish Airlines Logo
7:10 pm - 5:40 pmSEA-ICN
30h 30m1 stop
Turkish Airlines Logo
10:25 am - 10:35 amICN-SEA
40h 10m1 stop
$1,043Turkish Airlines
Find Deal
Sun, Aug 17 - Wed, Aug 27
Expert advice

Expert advice for your flight from Seattle to Seoul

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
Korean Air

Enjoy direct aisle access in Prestige Class on select aircraft for enhanced privacy.


Korean Air offers complimentary checked bags for all passengers on long-haul flights.

Read more about Korean Airby Robert Schrader
Asiana Airlines

Asiana's 9-seat rows on Boeing 777 offer more space than typical 10-seat configurations.


Choose Economy Smartium on A350 for extra legroom, priority boarding, and lounge access.

Airports
SEA

Use the SEA Spot Saver for expedited security screening. Book online or via the flySEA app for free access to dedicated lanes.

Read more about SEAby Harriet Baskas
ICN

Take the AREX Express train for a quick 40-minute ride from ICN to Seoul Station, avoiding costly taxis.

Read more about ICNby Robert Schrader
Our travel experts
Robert Schrader

Robert Schrader

Expert on Korean Air and ICN

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
John Walton

John Walton

Expert on Asiana Airlines

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more
Harriet Baskas

Harriet Baskas

Expert on SEA

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Useful Info

KAYAK's insights & trends for Seattle to Seoul flights

Get data-powered insights and trends into flights from Seattle to Seoul to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to Seoul
Find cheap flights to Seoul

Planning a trip from Seattle to Seoul? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

What is the cheapest Seattle to Seoul flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Seattle to Seoul.

Our data shows that the cheapest route for a return flight from Seattle to Seoul cost $705 and was between Seattle (SEA) and Incheon Intl Airport (ICN). On average, the best prices are found if you fly this route. The average price for a return flight for this route is $705.

What’s the cheapest day of the week to fly from Seattle to Seoul?

The average price of all round-trip flights from Seattle to Seoul clicked on KAYAK for each day over the last 12 months.

For Seattle to Seoul, Monday is the cheapest day to fly on average and Friday is the most expensive. Flying from Seoul back to Seattle, the best deals are generally found on Tuesday, with Sunday being the most expensive.

What is the cheapest month to fly from Seattle to Seoul?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Seoul, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Seoul is February, where tickets cost $933 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is $1,666 and $1,527 respectively.

Can I save money by flying with a layover from Seattle to Seoul?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $1,360 on average.

How far in advance should I book a flight from Seattle to Seoul?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Seoul, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Seoul, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 3 weeks before departure.

Good to know

Low seasonFebruary
High seasonApril
Cheapest flight$406
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Seattle to Seoul Incheon Airport

When to book flights from Seattle to Seoul

Are your dates flexible? Find out the best times to travel from Seattle to Seoul based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from Seattle to Seoul: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Seattle to Seoul 
Verified travelerFlew with Asiana AirlinesSEA-ICNDec 2024
Asiana is a good airline to fly on.
lizFlew with Asiana AirlinesSEA-ICNMay 2024
Do try to snooze on long haul flights, bring a good book to read, choose an aisle seat.

FAQs for booking flights from Seattle to Seoul

  • Will I need a visa to travel from Seattle to Seoul?

    U.S. citizens traveling from Seattle to Seoul for tourism or business purposes can enter South Korea without a visa for up to 90 days. This is valid as long as the purpose of the visit is not to engage in paid work or long-term employment. Visa requirements can change over time, so it is essential to verify the current visa policy before traveling.

  • What are some good ways to get to downtown Seoul from Incheon International Airport?

    One choice would be to take the bus offered by Seoul Bus, which makes the trip in around 1h 14min, with buses leaving every hour or so. There is also a train operated by AREX that makes this trip in about 1 hour, with trains leaving every 15 minutes or so.

  • Which airport should I choose for my flight to Seoul?

    Incheon International Airport is by far the larger of the two airports and serves as a hub for over 80 airlines that are both domestic and international. If you do plan on traveling somewhere else in Korea after your flight to Seoul, Gimpo International Airport can make a much better choice since this airport focuses heavily on domestic travel to places like Busan, Daegu, and Jeju Island.

  • What are some of the amenities at Seattle Tacoma International Airport for passengers with limited mobility?

    Some features this airport offers include visual paging boards and assistive listening devices for individuals with hearing impairments. The airport features accessible restrooms equipped with spacious stalls, grab bars, and accessible sinks. There are tactile maps and wayfinding signage with braille that are available throughout the airport to assist passengers with visual impairments in navigating the terminals.

  • What is the cheapest flight from Seattle to Seoul?

    In the last 3 days, the lowest price for a flight from Seattle to Seoul was $406 for a one-way ticket and $526 for a round-trip.

  • Do I need a passport to fly between Seattle and Seoul?

    Yes

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Seoul?

    Asiana Airlines, Alaska Airlines, American Airlines, and Delta offer inflight Wi-Fi service on the Seattle to Seoul flight route.

  • Which aircraft models fly most regularly from Seattle to Seoul?

    The Boeing 787-10 Dreamliner is the aircraft model that flies most regularly on the Seattle to Seoul flight route.

  • Which airline alliances offer flights from Seattle to Seoul?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and Seoul, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from Seattle to Seoul?

    There are nonstop flights from Seattle to Seoul on a daily basis.

  • Which is the best airline for flights from Seattle to Seoul, China Airlines or Turkish Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Seoul are China Airlines and Turkish Airlines. With an average price for the route of $967 and an overall rating of 8.3, China Airlines is the most popular choice. Turkish Airlines is also a great choice for the route, with an average price of $1,299 and an overall rating of 7.3.

  • How does KAYAK find such low prices on flights from Seattle to Seoul?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Seoul.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Seoul?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Seoul?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seoul with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Seoul?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seoul from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to Seoul

  • Looking for a cheap flight? 25% of our users found flights on this route for $498 or less one-way and $790 or less round-trip.
  • If you plan on taking one of the nonstop flights offered by Delta Airlines between Seattle Tacoma International Airport (SEA) and Incheon International Airport (ICN), there is a Delta Sky Club Lounge in Terminal A of Seattle Tacoma International Airport.
  • When flying on Delta Airlines to Seoul in first class, you get priority check-in and security clearance on the ground in Seattle as well as priority boarding. In the air, you get gourmet meals, large and comfortable seats, a dedicated flight attendant, and an entertainment system at your seat.
  • If you want a great way to get from the center of Seattle to Seattle Tacoma International Airport, consider the buses offered by King County Metro that make this trip in roughly 45 minutes. Sound Transit also offers its 1-Line that makes the trip in about 33 minutes.
  • Kids from 5 to 11 years old traveling alone on Korean Air will have a dedicated staff member that will assist them during every step of their trip. They will also have a dedicated crew member that will look after them on the flight and, on long flights such as this, the airline offers their Flying Mom service.
  • Turkish Airlines makes a good choice for a sustainable airline on this route. They continuously invest in modern and fuel-efficient aircraft, such as the Boeing 787 Dreamliner and Airbus A350. They have implemented renewable energy projects to reduce their reliance on fossil fuels. They have also participated in carbon offset programs, supporting projects that reduce or offset CO2 emissions.

Top 5 airlines serving from Seattle to Seoul

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Seoul. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Seoul? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1068 reviews
8.2Entertainment
8.1Food
8.7Crew
8.3Comfort
8.5Boarding
Airline reviews

Not many people, so you can lay down on two seats

10.0 ExcellentAnonymous, Apr 2025ATL - ICN
Read more Korean Air reviews

Not many people, so you can lay down on two seats

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

The flight was on time and very quick, as expected, but the leg room isn't great in coach seats.

The food on this flight from NRT to ICN was average. The staff were very friendly, but the flight took about 60 minutes longer than it should have because the pilot was only flying at 330mph instead of 500-550. Not sure what the reason is for that, but it meant for a much longer flight.

Flight delayed going to Korea. No free WiFi. Other than that everything else is were good. I would love to fly with Korea airline again

Food choice could be better, plus the crew can walk around and offer snacks and drinks. Also the air-conditioning onboard blows high speed, and very cold makes the trip uncomfortable.

long flights are difficult but the crew and amenities made it a very good experience

Always have great flight experience on Korean Air. Glad to have been able to book this on Kayak/Under Pricer this year!!

An International flight from Cebu to Incheon was delayed the night before without a proper explanation. Same thing happened from Incheon to Cebu in the first leg. I will not fly Korean again. And I will ensure Delta their US partner hears about it. This is a routine by Korean to delay flights from and to Cebu via Incheon.

When I selected my seats, it showed row 29 as the front row, so I paid extra to sit in what I thought would be the front row, but when I boarded the plane, row 29 was the second economy row. I was disappointed that I'd spent almost $100 more for no actual benefit.

Staff was so nice and very helpful with directions aswell!

It was our first time flying with China Airlines and had a very nice experience. The airline staff & crews both on the ground and air were very nice. Food on the plane was very good. Will recommend it to family and friends.

Not great, will likely try to fly another or maybe I should have upgraded my ticket? Needed Air…

I don’t think I’ll be flying them again. Tight seats, no flowing air or air nozzles that you can turn air on you, for those who could have motion sickness this would be your worst nightmare. The pilot was great and experienced (which is what you want when flying 12 hours) overall I’m thankful knowledgeable pilots!

My ticket did not indication which group I was in for boarding; the gate attended help me

Very routh cabin crew food is only 2 meals for 13 hours fry with them They should get better training how to service good super routh language and talking with customer

I would like to commend the staff from this flight. They all looked happy and I can tell they love what they are doing and constantly smiling while serving the passengers. Special mention to the guy FA in our section. I did not get his name but he is so far the best F.A I have ever encountered!

staff are super nice and effiecient! It was a very comfortable and relaxing flight

When I booked a premium economy ticket. I then had to pay $100+ to book my seat.

Boarding could have been a little bit better but other than that it was a pretty good experience. I think because of the stowaway to Paris France recently they are being extra diligent about boarding passes at the gate. But they boarded the back of the plane first, and that's something I really think needs to start in the USA.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

It was all perfect and very pleasant for such long flights

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Drinks were very limited. All I wanted was water, and on a 4 hour flight, I was given 2 cups of about 3 ounces each.

We took business class, It was comfortable and I was able to sleep.

Everything was perfect. A flight attendant even brought me snacks after I declined food due to my desire to force myself to follow the destination time zone.

For the most part, it was an enjoyable experience. It's the 2nd half of the journey was a bit uncomfortable. It was on a noticable smaller plane compared to the previous one.

Only process that my luggage didn’t make it to my destination because of short connection but I understand

The boarding process was good. The toilet could be better maintained.

This has been the worst experience I've ever had. We arrived to Ho Chi Minh Airport and were supposed to get our Asiana ticket from the transfer counter as we came with a different airline. However, the staff at the transfer counter were not helpful and kept giving us different information. We were first told by Asiana airlines staff we had to wait 2 hours so they could print out and give us our tickets, then someone else told us we had to wait 3hrs, someone told us "I don't know, just go sit and wait and we will tell you later." This was at a place in the Ho Chi Minh airport that had no coffee or food shops, nothing, just immigration (to enter Vietnam with a Vietnam Visa) and security (to transfer into the gates) but we needed our printed boarding pass to go through. It wasn't until we demanded to speak to a supervisor as our flight time was 1hr away because they kept telling us "there's alot of time left for your international flight, we will get your tickets later" we still had to wait around 20minutes for the "Supervisor" to give us our tickets. I would NOT recommend Asiana Airlines, especially if going thru Ho Chi Minh Airport as they are not helpful. (We almost missed our flight, due to their lazyness and incompetence of printing our tickets) I would suggest Asiana Airlines to have a Machine in the transfer area so passengers can easily print out their boarding passes themselves and save some money by not hiring incompetent staff that can't do a simple task such as printing a boarding pass.

Great service. They could offer vegetarian food and do more to reduce waste.

Our bag was lost so that made unnecessary chaos On our trip

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

It was an overnight flight and I desperately needed coffee before we landed, but Delta does only one beverage service, and that is shortly after takeoff, not before landing at 5 am.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

All was good except for the seats, not very comfy.

2.5 hour delay sitting in the plane on the tarmac, you tell me how the experience was

I hope these comments will find their way to AC customer experience team. Me and my spouse 50 years of aged coming back from 7 days perfect vacation... While boarding in FLL flight AC1621, one of the boarding agents (tall aged african american) man literelly yeld at my wife during the picture talking process. MAM ! STEP !! BACK !!! We are not illegal immegrants beying deported, nor are we in the millitary. We are customers returning home. This was unacceptable. While boarding in YYZ flight AC1154, one of the boarding agents (tall aged caucasian) man criticied with several complesant remarks my passport condition saying that I could not travel intl with it due to stain, decoloration, and BLOOD. My passport does not have blood on it! Yes it might be in less than perfect condition, but their are ways to talk to customer that does not imply not allow a boarding agent to be angry fathery like, or a custom agent looking at a suspicious individual. Both experience were less than acceptable for might I remind you a paying CUSTOMER returning home.

Short flight so no food or entertainment. Good landing at SFO and on time. We were told no carryon luggage yet lots of people were puting bags in overhead compartments. The rules need to be made more clear. I was on the first leg of an international flight and this is the first time I could not have carryon luggage.

This flight didn't happen for me because of overbooking.

My flight was overbooked and they would not let me board. I had to book another flight and pay the full amount of that flight. I did not get any help at all from Air Canada or United Airlines.

Comfortable seats and movies entertainment available. Better experience than the flight from Toronto to Denver.

Poor air traffic controller staffing led to a 50%reduction on flights so we got to wait 4 hrs for our flight! Very disorganized at the gate Poor communication with customers

It was delayed by almost 90 minutes and that messed up our plans but it was beyond UA’s control that is what we heard

Terrible experience, flight was delayed both ways. Limited compensation for the 5+ hour delay. Will not be flying Air Canada Rouge, and don’t recommend you do either.

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