SEA - SEL

$392 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 9/20. 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.
1 adult
1 adult, Economy

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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Flights Deals

Cheap Flights 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Seoul

Sun, Oct 19 - Sun, Nov 9
 Logo
7:15 pm - 4:05 pmSEA-ICN
28h 50m1 stop
 Logo
2:35 pm - 6:26 pmICN-SEA
20h 51m2 stops
Thu, Sep 25 - Thu, Oct 16
Air Canada Logo
10:00 am - 4:05 pmSEA-ICN
14h 05m1 stop
Air Canada Logo
5:45 pm - 6:36 pmICN-SEA
16h 51m1 stop
$739Air Canada
Find Deal
Mon, Sep 1 - Thu, Oct 23
 Logo
10:00 am - 8:10 pmSEA-ICN
18h 10m2 stops
 Logo
5:45 pm - 10:16 pmICN-SEA
20h 31m1 stop
Mon, Oct 13 - Tue, Oct 28
China Airlines Logo
1:10 am - 7:35 pmSEA-ICN
26h 25m1 stop
China Airlines Logo
12:25 pm - 7:15 pmICN-SEA
22h 50m1 stop
$886China Airlines
Find Deal
Mon, Sep 1 - Thu, Oct 23
China Airlines Logo
1:40 am - 11:15 amSEA-ICN
17h 35m1 stop
China Airlines Logo
12:35 pm - 7:20 pmICN-SEA
22h 45m1 stop
$887China Airlines
Find Deal
Fri, Sep 26 - Fri, Oct 10
Asiana Airlines Logo
2:15 pm - 5:55 pmSEA-ICN
11h 40mnonstop
Asiana Airlines Logo
6:20 pm - 12:30 pmICN-SEA
10h 10mnonstop
$917Asiana Airlines
Find Deal
Sat, Sep 13 - Thu, Nov 20
Asiana Airlines Logo
2:15 pm - 5:55 pmSEA-ICN
11h 40mnonstop
Asiana Airlines Logo
9:00 pm - 1:55 pmICN-SEA
9h 55mnonstop
$919Asiana Airlines
Find Deal
Wed, Sep 17 - Sun, Oct 26
Korean Air Logo
7:20 am - 5:50 pmSEA-ICN
18h 30m1 stop
Korean Air Logo
8:05 pm - 2:20 pmICN-SEA
10h 15mnonstop
$921Korean Air
Find Deal
Fri, Oct 24 - Sun, Nov 9
Korean Air Logo
5:59 pm - 5:00 amSEA-ICN
19h 01m1 stop
Korean Air Logo
4:10 pm - 9:00 amICN-SEA
9h 50mnonstop
$923Korean Air
Find Deal
Tue, Nov 4 - Fri, Nov 14
Delta Logo
11:15 am - 4:30 pmSEA-ICN
12h 15mnonstop
Delta Logo
8:05 pm - 1:20 pmICN-SEA
10h 15mnonstop
$999Delta
Find Deal
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 without a paid program. Book online or via the flySEA app for free access.

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 and traffic delays.

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 $663 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 $663.

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 Saturday 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 $926 (return) on average. On the other hand, the most expensive months are June and August, where the average cost of round-trip tickets is $1,530 and $1,429 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.

No, with an average price for the route of $1,978, prices are generally cheapest when you fly direct.

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$392
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 11% 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.

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 $392 for a one-way ticket and $687 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?

    Alaska Airlines, Asiana 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, Korean Air or EVA Air?

    The two airlines most popular with KAYAK users for flights from Seattle to Seoul are Korean Air and EVA Air. With an average price for the route of $1,176 and an overall rating of 8.4, Korean Air is the most popular choice. EVA Air is also a great choice for the route, with an average price of $1,066 and an overall rating of 8.4.

  • 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 $442 or less one-way and $786 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 1090 reviews
8.1Food
8.7Crew
8.2Entertainment
8.5Boarding
8.3Comfort
Airline reviews

Korean air has a little bit more seating space than Asiana air.

8.0 ExcellentAnonymous, Jun 2025CRK - ICN
Read more Korean Air reviews

Korean air has a little bit more seating space than Asiana air.

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Unfortunately, there has been a boarding and departure delay. However, as usual, the flight arrived earlier than the scheduled. There has been a turbulence in-between, it’s unavoidable. I couldn’t complain them.

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.

They need to improve on how the plane lands cause it was not smooth at all.

I did not like how the plane landed. It was not smooth.

Been flying with China Airline over years many times. Good experience with them, no issues.

China Airlines crews are very excellent doing their job. Very friendly and hardworking. I will always choose China Airlines over and over. Thank you all for making my flight comfortable. God bless to all the staff. :)

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

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

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.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Overall, aside from the baggage issue, it was as good as one expects.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

I want to single out flight attendant Mitch who was in the Premium Economy section. When my wife’s hearing aide dropped through the cushion under the seat he was able to locate it and return it to her. Food was a different matter. Dinner was fine. Breakfast was another matter. They had a yogurt dish that the ran out of and the alternative was not very good according to those we talked to.

Excellent check-in. Crew was good. Excellent communication from flight deck.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Flight was delayed but the real issue is how long we sat after boarding. Space very limited for an overnight flight and seatbacks didn’t recline so it was almost impossible to sleep.

The staff made sure I was comfortable, moved me to a better seat with more leg room

Easy boarding and comfortable seating were plusses. Enjoyed the experience and good service from the captain and crew. Many thanks...!

Somehow, my booking was under my preferred name instead of my legal name so they almost didn’t let me board the plane at LAX. This problem should have been notified to me when I was still in Toronto.

Great overall. Quick boarding, attentive staff - great experience in premium class.

When arriving over 2 hours early to check k in at Charlotte airport I was told I would have to check my carry on ? Apparently the flight was full and may not be room. I was not given a choice and the agent was quite unpleasant about it. I am a senior amd was not comfortable me having to worry about my bag being lost vut it didn’t seem to bother him. There were lots and lots of people of all ages in line when we boarded with carryons and most larger than mine .the rest of my journey was pleasant vut this was totally unacceptable.

The layover was 6 PLUS hours and we were only given a $15.00 voucher. We missed our first activity in Quebec due to the delay.

Miserable staff as it was a late/delayed flight and crew wasn’t in the best spirits. Completely understood as neither was most of the passengers. Still unacceptable l.

Or the greatest and it ended up picking us up from Chicago to Toronto not sure who was tesponsible for the 4 hr delay. United should have been properly prepared for a scheduled flight from Austin to Chicago and they were not.

It was a short flight, and no entertainment. That was not a problem for us, but there is no option for "not applicable". There was a bit of turbulence, so there was no food service.

Everything you need to know for your flight from Seattle to Seoul

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