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Find cheap flights from Seattle to South Korea from $611

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 South Korea departing on 10/21. 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
0 bags
Tue 7/9
Tue 7/16

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Best South Korea Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Seoul
Incheon1 stop$956
Busan
Busan1 stop$1,028

Good to know

Low season

February

High season

October

Cheapest flight

$611
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly and prices are also 12% lower on average.
Flight from Seattle to Seoul

FAQs - booking South Korea flights

  • Should I get a visa before I fly from Seattle to South Korea?

    To travel to South Korea, United States citizens only need to have a passport that is valid at the time of their entry. Until the end of 2024, there is no need to get a visa when you are traveling for tourism or business purposes to South Korea, as you are allowed to stay in the country for up to 90 days without a visa. Do remember to make sure your passport has one blank page for an entry stamp.

  • What do I need to know about child car seat laws when I am departing my airport destinations in South Korea?

    When you travel in a car with a child in South Korea, they need to travel in a car seat facing to the rear until they are two years old and then in a car seat facing forward until they are four years old. After that children must travel in a booster seat until they are either six years old or they weigh more than 80 lbs.

  • What are some reasons to upgrade to first class when traveling on Delta Air Lines?

    Flying first class with Delta Air Lines on a Seattle to South Korea flight provides a premium travel experience. Passengers relish spacious seating, gourmet dining, and personalized service. Exclusive amenities like priority boarding and lounge access make the journey luxurious and stress-free. Enhanced privacy, extra legroom, and in-flight entertainment guarantee a more relaxed and enjoyable experience for discerning travelers.

  • What is a good choice for a sustainable airline on the Seattle to South Korea route?

    Korean Air is committed to sustainability, implementing eco-friendly practices to reduce its environmental impact. The airline invests in fuel-efficient aircraft, adopts green technologies, and promotes waste reduction. Initiatives like carbon offset programs and sustainable practices in operations showcase Korean Air's dedication to environmental responsibility and a more sustainable future in aviation.

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

    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 South Korea.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to South Korea 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 South Korea?

    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 South Korea 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 South Korea?

    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 South Korea from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to South Korea

  • Looking for a cheap flight? 25% of our users found tickets from Seattle to the following destinations at these prices or less: Incheon $658 one-way - $1,149 round-trip
  • Morning departure is around 27% more expensive than an evening flight, on average*.
  • One of the most popular airport destinations in South Korea is Incheon International Airport (ICN). You can fly here from Seattle Tacoma International Airport (SEA) on a direct flight available aboard Delta Air Lines, Korean Air, and Asiana Airlines.
  • Another popular airport destination in South Korea is Gimhae International Airport (PUS). To make the trip here from Seattle Tacoma International Airport, a terrific flight option is to take a one-stop flight or Korean Air that has a layover at Incheon International Airport.
  • When you plan on traveling early in the morning from Seattle Tacoma International Airport to South Korea, you might consider spending the night before your flight at the Hilton Seattle Airport & Conference Center, which offers accessibility to the airport through both a sky bridge and an airport shuttle.
  • Another airport destination in South Korea that is very popular with travelers is Jeju International Airport (CJU). An easy way to get here from Seattle Tacoma International Airport is to travel on a one-stop flight that utilizes Delta Air Lines and China Eastern Airlines, with a layover at Shanghai Pudong International Airport (PVG).
  • When departing from Seattle Tacoma International Airport aboard Delta Air Lines, it is good to know that this airline offers one of its Delta Sky Club locations in Concourse A at the airport, which is a wonderful spot to wait for your flight to South Korea.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top 5 airlines serving from Seattle to South Korea

Need help choosing which airline to fly with from Seattle to South Korea? 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.
8.5
Korean AirOverall score based on 1129 reviews
8.8Crew
8.6Boarding
8.2Entertainment
8.3Comfort
8.2Food
Airline reviews

Overall, very uneventful and pleasant experience. Most importantly, no delays.

10.0 ExcellentAnonymous, May 2024SGN - ICN
Read more about Korean Air reviews

Overall, very uneventful and pleasant experience. Most importantly, no delays.

The flight crews were extremely professional, helpful, and courteous. Departure and arrival times were accurate. No delay. I will use K airline again. Thanks

We were seated at the back and that was very uncomfortable for me with the turbulence we experienced on our way to Chicago.

I enjoyed flying on Korean Air. The service was great and the food was yummy. They served white fish.

I enjoyed flying on Korean Air. The service was great and the food was yummy, especially the bibimbap and cold spicy noodles. The only thing that bummed me out on this red-eye flight was that my seat did not properly recline so I was not able to sleep.

On time and flight crew are always so happy to help and always smiling unlike other airlines.

Great crew, decent food Charging plugs were broken on both seats next to me. Only the USB port was available, and that charges, very, very slowly. Seat was also broken, it would not lock into position when reclining.

Korean Air had great service and the Bibimbap dish was the best airplane food I’ve ever had. It was a long flight so in between the two meals they served customers could get Shin ramen. The flight attendants let my children use a pair of nice headphones for the flight and had earbuds and slippers for all the adults. The flight was long but the time passed by relatively quickly because they have many great shows in their entertainment TV. I watched the BTS Love Yourself and Speak Yourself concerts 💜

Stewardess are nice. Food could have been better and should have a better dessert. They do not offer scotch or beer. You have to ask for it. I also was not happy that you do not serve ginger ale and or cranberry juice. This is my first time that an international flight do not have this. I go home overseas every year and when I travel through ANA, Delta, Qatar, JAL, Asiana Air, United Air. they all serve this two very famous drink. You do not have a great snack tray.

You did not put me on a Korean Air flight! so I do not have nothing to say

It’s wonderful service aboard. Delayed for departure but arrival in Korea went so well.

Ok, the flight was late and the plane was old. The check in crew in Narita were amazing however.

Seems like crew assumed you're korean. Not impressed by crew

One of the flight was delayed. The flight attendant of returning flight to LA was mean.

Flight attendants rude, they disappear for almost 3 hours not doing rounds to see what people needed. The laboratories were full of empty water cups, because they never come back to collect them.

Flew on an Airbus 350-900. Excellent aircraft properly cleaned and serviced. Flight crew was excellent plane departed and arrived on time. The A350 has excellent air circulation far better than the 777. I would recommend Asiana to anyone looking to fly in a clean comfortable environment. This is my second round trip flight from New York to Bangkok via Asiana and I will book Asiana again!

I could not choose my seat prior to check in

I had the most wonderful experience from CEB bag drop through deplaning. The staff, the aircraft, food, and cabin crew were all amazing. I want to give a kudos to Marky from Mactan Cebu's Asiana airport staff for his exceptional customer service and assistance.

JetBlue's check-in was great, but there was an in-flight attendant who was very rude and unkind. I didn't realize that the bathrooms were already locked 30 mins prior to landing and needed to use the restroom. Instead of politely asking me to return, she rudely told me, 'NO, bathrooms are locked! Go back to your seat!' The JetBlue flight was more than an hour delay, which made me almost miss my connecting flight with Asiana. I understand the reasoning, but the action they took to get a hold of maintenance was time consuming. It took them more than 30 mins to get a hold of maintenance and for maintenance to get started. The Asiana flight and crew were wonderful, in general. They waited for us who were delayed from the previous flight before they took off and were very kind to take my checked baggage's info. Seats were a little uncomfortable for such long flight, but service and flight attendants were great! However, my 3 checked baggages are missing! They're lost somewhere in the transition. I'm writing this review 3 days after my arrival to the Philippines, and my 3 checked baggages, where my wedding dress is, are all still missing! I and the CEB airport crew have sent multiple emails to both JetBlue and Asiana, and neither has responded to any of our emails. Although, I was able to get in contact with JetBlue's Interline Department who confirmed that the bags were turned over to Asiana without confirmation details.

The full flat bed was not that comfortable, hard and lumpy., too much space wasted with those bulky walls and divisions instead of making the bed 3-4 inches wider. The compartment where you put your feet is like a shoebox, poor design. Toilets of A350 are just too small, sink is too small

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

Extra leg room was nice. The wheelchair situation getting off the plane was a disaster. No wheelchairs or porters were waiting for customers to be picked up when the plane arrive pretty much on time. After about 45 minutes of waiting on the chair service I just walked myself to the luggage claim. Aren't they supposed to know when the planes are going to arrive and land? It was messed up from thr time we landed. No wheelchairs and no porters. Finally After an hour of waiting for them to arrive I walked to the Baggage claim myself. Not a good way to return home from a great Hawaiian vacation.

The flight was so cold from Vegas to Hawaii. Everyone was so cold they put on goodies. They made us buy blankets for $13 each for 4 people. The plane was like an icebox. Now on the way back you made me pay extra so my family can sit together. Will not use you again.

The in flight speakers little touches of humor were entertaining.

The crew was quick and efficient. The flight was uneventful and arrived slightly early.

My seat was broken I couldn’t put it back I have really bad back issues , the flight was 5 hours delayed and there was a drink dude harassing the entire flight

No food or entertainment because it was a short flight. Unfortunately the takeoff was delayed more than an hour

The flight left and arrived on time. the only food offered on the 5+ hour flight was a cheese sandwich. Unlike Alaska Airlines there was no information on the website regarding food at all or any option to purchasse in advance. Otherwise, it was an excellent flight.

Parents with kids should all be in the same area. Sounds rude but who what's to fly 6hrs with crying and bratty kids. Just my opinion.

Ok, so I didn’t have seats, so got there very early. I was first in line only to be told, listen for your name for seats. The flight was boarding before they gave me a middle seat, way after others showed up who were given more favorable treatment. Ok, so , don’t show up early and obey all the rules??? Clearly, your gate clerks did not. What gives???

Short flight but delayed. Since its a short flight no food or entertainment necessary

My flight got canceled. Then AC rebooked me to a next day flight. No compensation no apology. It almost messed up my entire trip and schedule. However, all the unexpepected seems routine and ordinary to AC, so customers need to get used to.

The food was horrible the flying attendance hardly made any checks and the seats were very tied ..

I love air Canada. The staff is so helpful and friendly and attentive. I paid for extra room but chose a ser near a person who took up a lot of space which gave me less space than regular economy, I was sad I did that!

I appreciated the flight was on schedule but the crew told us that the flight would be delayed because of an air craft queue to take off. Instead of us arriving at 11.55pm, we were in Toronto at something past 2am which was a massive disadvantage on my part.

For such a long flight they should offer tea or coffee in between two meals.

No seat assignment . Last on board . Though I would not receive any boarding pass

last minute was rebooked. This rebooking made me miss my connection, added a stop in my itinerary without my approval, and had me arriving 10 hours later to my destination...for a delay that was 2 hours. To boot, my final flight from London to Athens booked me in a middle seat, where I originally booked all aisle seats. This was incredibly uncomfortable for a 24 hour journey and made me incredibly upset.

Did not appreciate “hidden fees” to check a bag for international flight and purchase a seat to be next to my spouse. Won’t choose this airline again.

The flight left over 2 hours late and caused me to miss my connecting flight. Consequently, I missed my cruise ship out of Barcelona. The cost associated with this miss was as follows: Airfare to Sicily Italy to get on the ship TWO days late - $232.30 Taxi from Airport to hotel $35 Dinner at hotel $38 Hotel in Barcelona - $208 Taxi from Sicily to hotel $70 Hotel in Sicily - $148 Prorated time missed on cruise $ 1,143

No meal. Flight crew was wonderful, happily finding me storage for my guitar. THANK YOU!!!

Book cheap flights from Seattle to South Korea

Recent round-trip flight deals

10/20Sun
1 stopTurkish Airlines
31h 00mSEA-ICN
11/6Wed
1 stopTurkish Airlines
47h 20mICN-SEA
$956
8/29Thu
1 stopTurkish Airlines
28h 30mSEA-ICN
9/30Mon
1 stopTurkish Airlines
40h 00mICN-SEA
$986
10/1Tue
1 stopAir Canada
29h 00mSEA-ICN
10/24Thu
1 stopAir Canada
20h 20mICN-SEA
$1,049
9/15Sun
1 stopAir Canada
29h 00mSEA-ICN
9/30Mon
1 stopAir Canada
16h 26mICN-SEA
$1,051
9/16Mon
nonstopAsiana Airlines
11h 25mSEA-ICN
10/15Tue
nonstopAsiana Airlines
10h 30mICN-SEA
$1,216
8/27Tue
nonstopAsiana Airlines
11h 25mSEA-ICN
9/20Fri
nonstopAsiana Airlines
10h 30mICN-SEA
$1,221
10/29Tue
1 stopKorean Air
17h 00mSEA-PUS
11/12Tue
1 stopKorean Air
18h 55mPUS-SEA
$1,463
10/29Tue
2 stopsKorean Air
19h 55mSEA-PUS
11/12Tue
1 stopKorean Air
15h 30mPUS-SEA
$1,469
10/28Mon
2 stopsDelta
25h 50mSEA-PUS
11/12Tue
1 stopDelta
18h 55mPUS-SEA
$1,607
10/25Fri
2 stopsDelta
28h 10mSEA-PUS
11/3Sun
1 stopDelta
33h 50mPUS-SEA
$1,657

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Recent one-way flight deals

10/21Mon
1 stopEVA Air
25h 45mSEA-GMP
$611
8/24Sat
3 stops
45h 25mSEA-GMP
$627
9/11Wed
1 stopKorean Air
27h 05mSEA-PUS
$786
7/6Sat
nonstopAsiana Airlines
11h 25mSEA-ICN
$789
7/26Fri
nonstopAsiana Airlines
11h 25mSEA-ICN
$790
7/9Tue
1 stopAir Canada
32h 55mSEA-ICN
$792
7/12Fri
1 stopAir Canada
18h 15mSEA-ICN
$816
8/17Sat
nonstopDelta
11h 45mSEA-ICN
$903
7/8Mon
1 stopKorean Air
18h 05mSEA-ICN
$924
7/11Thu
nonstopDelta
11h 45mSEA-ICN
$936

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Last minute flights from Seattle to South Korea

Last minute flight, train and bus deals

6/10Mon
multi-stopTurkish Airlines
31h 00mSEA-ICN
6/17Mon
multi-stopTurkish Airlines
33h 25mICN-SEA
$1,285
6/10Mon
multi-stopTurkish Airlines
31h 00mSEA-ICN
6/17Mon
multi-stopTurkish Airlines
33h 25mICN-SEA
$1,294
6/10Mon
multi-stopTurkish Airlines
31h 00mSEA-ICN
6/18Tue
multi-stopTurkish Airlines
33h 25mICN-SEA
$1,355
6/13Thu
multi-stopAir Canada
18h 10mSEA-ICN
6/23Sun
multi-stopAir Canada
32h 00mICN-SEA
$1,674
6/12Wed
multi-stopAir Canada
32h 55mSEA-ICN
6/18Tue
multi-stopAir Canada
12h 34mICN-SEA
$1,734
6/10Mon
multi-stopDelta
19h 50mSEA-ICN
6/18Tue
nonstopDelta
10h 40mICN-SEA
$1,847
6/13Thu
multi-stopDelta
19h 50mSEA-ICN
6/18Tue
multi-stopDelta
23h 03mICN-SEA
$1,852
6/12Wed
multi-stopUnited Airlines
16h 30mSEA-ICN
7/17Wed
multi-stopUnited Airlines
21h 22mICN-SEA
$1,943
6/10Mon
multi-stopANA
33h 55mSEA-GMP
6/16Sun
multi-stopANA
34h 30mGMP-SEA
$2,459
6/10Mon
multi-stopANA
33h 55mSEA-GMP
6/17Mon
multi-stopANA
33h 06mGMP-SEA
$2,488

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Seattle - South Korea Flights

Departure:

Seattle (SEA)United States

Return flight deals:

South Korea - Seattle

Cabin classes:

$1,697
$2,521
$2,883
$869