Which airport is the most popular layover for flights between Seattle and Seoul?

Vancouver (YVR) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Seattle to Seoul?

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 14h 44m.

What airlines fly to Seoul?

Alaska Airlines, Korean Air and Asiana Airlines are the top three most popular airlines that fly to Seoul from Seattle according to our data. Alaska Airlines is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 9 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Seattle to Seoul?

Taipei City (TPE) has the shortest average layover time for this route: 2h 18m.

Which layover airport offers the lowest fares from Seattle to Seoul?

Flights via Hong Kong (HKG) offer the lowest average round-trip price of $717.

How many flights depart from Seattle to Seoul on average per week?

49 flights are operational weekly from Seattle to Seoul as of May 2026. The most popular departure day for this route is Wed, with 18% of flights per week taking off on this day.

How many flights depart from Seattle to Seoul on average per day?

As of May 2026, 7 flights take off from Seattle and land in Seoul each day. The most common flight departure time for this route is 12:00AM, with 62% of daily flights taking off in the afternoon.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Seoul?

United Airlines, Delta, and Japan Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Seoul

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Seoul?

Prices for flights from Seattle/Tacoma Intl Airport to Seoul are updated daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Seoul?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Seoul is 9 as of May 2026.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Seoul?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Seoul.

What documentation or ID do you need to fly to Seoul?

The travel and health documents you'll need for your trip to Seoul may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seoul. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$335 Cheap Flights from Seattle to Seoul in 2026

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Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:25 pm - 12:40 pm

SEA

ICN

32h 15m

1 stop

6:40 am - 10:05 am

ICN

SEA

19h 25m

1 stop

$877Cathay Pacific

Tue, Sep 8 - Wed, Sep 16

12:25 pm - 12:25 am

SEA

ICN

20h 00m

1 stop

6:40 am - 10:05 am

ICN

SEA

19h 25m

1 stop

$879Cathay Pacific

Tue, Aug 25 - Mon, Sep 21

12:25 pm - 10:25 pm

SEA

ICN

18h 00m

1 stop

8:00 am - 10:05 am

ICN

SEA

18h 05m

1 stop

$880Cathay Pacific

Wed, Aug 19 - Sat, Sep 19

12:10 am - 4:00 am

SEA

ICN

11h 50mnonstop

9:00 pm - 1:55 pm

ICN

SEA

9h 55mnonstop

$882Asiana Airlines

Sun, Jul 12 - Mon, Nov 16

12:10 am - 4:00 am

SEA

ICN

11h 50mnonstop

9:20 pm - 3:45 pm

ICN

SEA

10h 25mnonstop

$888Asiana Airlines

Thu, Jul 23 - Thu, Jul 30

12:10 am - 4:00 am

SEA

ICN

11h 50mnonstop

9:20 pm - 3:45 pm

ICN

SEA

10h 25mnonstop

$889Asiana Airlines

Tue, Jul 28 - Fri, Aug 21

2:10 am - 7:15 pm

SEA

GMP

25h 05m

1 stop

7:15 pm - 11:22 am

GMP

SEA

32h 07m

2 stops

$1,176Multiple Airlines

Mon, Aug 31 - Tue, Sep 8

2:10 am - 6:10 pm

SEA

GMP

24h 00m

1 stop

1:50 pm - 7:40 pm

GMP

SEA

21h 50m

1 stop

$1,182EVA Air

Sun, Aug 23 - Fri, Sep 11

1:30 am - 7:15 pm

SEA

GMP

25h 45m

1 stop

1:50 pm - 7:20 pm

GMP

SEA

21h 30m

1 stop

$1,184EVA Air

Mon, Oct 5 - Fri, Oct 16

12:10 am - 7:15 pm

SEA

GMP

26h 05m

1 stop

1:50 pm - 9:07 pm

GMP

SEA

24h 17m

2 stops

$1,217Multiple Airlines

Mon, Nov 16 - Fri, Dec 4

Cathay Pacific flights from Seattle to Seoul

Our best Cathay Pacific deals on Seattle to Seoul flight tickets

Cathay Pacific

Sep 8

SEA12:25 pmSeattle/Tacoma Intl

32h 15m

1 stop

ICN12:40 pmIncheon Intl

Sep 16

ICN6:40 amIncheon Intl

19h 25m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$877

Cathay Pacific

Aug 25

SEA12:25 pmSeattle/Tacoma Intl

20h 00m

1 stop

ICN12:25 amIncheon Intl

Sep 21

ICN6:40 amIncheon Intl

19h 25m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$879

Cathay Pacific

Aug 19

SEA12:25 pmSeattle/Tacoma Intl

18h 00m

1 stop

ICN10:25 pmIncheon Intl

Sep 19

ICN8:00 amIncheon Intl

18h 05m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$880

WestJet flights from Seattle to Seoul

Our best WestJet deals on Seattle to Seoul flight tickets

WestJet

Aug 16

SEA7:00 amSeattle/Tacoma Intl

19h 45m

1 stop

ICN6:45 pmIncheon Intl

Sep 22

ICN8:45 pmIncheon Intl

28h 55m

1 stop

SEA9:40 amSeattle/Tacoma Intl

$903

WestJet

Aug 16

SEA7:00 amSeattle/Tacoma Intl

19h 45m

1 stop

ICN6:45 pmIncheon Intl

Sep 24

ICN8:45 pmIncheon Intl

14h 00m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

$914

WestJet

Aug 30

SEA10:30 amSeattle/Tacoma Intl

16h 15m

1 stop

ICN6:45 pmIncheon Intl

Sep 14

ICN8:45 pmIncheon Intl

14h 00m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

$915

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 9/8

12:25 pm-12:40 pm

1 stop32h 15m

Incheon Intl

Wed 9/16

6:40 am-10:05 am

1 stop19h 25m

$877

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 8/25

12:25 pm-12:25 am

1 stop20h 00m

Incheon Intl

Mon 9/21

6:40 am-10:05 am

1 stop19h 25m

$879

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 8/19

12:25 pm-10:25 pm

1 stop18h 00m

Incheon Intl

Sat 9/19

8:00 am-10:05 am

1 stop18h 05m

$880

Quickest round-trip

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 7/12

12:10 am-4:00 am

Nonstop11h 50m

Incheon Intl

Mon 11/16

9:00 pm-1:55 pm

Nonstop9h 55m

$882

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 7/23

12:10 am-4:00 am

Nonstop11h 50m

Incheon Intl

Thu 7/30

9:20 pm-3:45 pm

Nonstop10h 25m

$888

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 7/28

12:10 am-4:00 am

Nonstop11h 50m

Incheon Intl

Fri 8/21

9:20 pm-3:45 pm

Nonstop10h 25m

$889

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 8/31

2:10 am-7:15 pm

1 stop25h 05m

Seoul Gimpo Intl

Tue 9/8

7:15 pm-11:22 am

2 stops32h 07m

$1,176

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sun 8/23

2:10 am-6:10 pm

1 stop24h 00m

Seoul Gimpo Intl

Fri 9/11

1:50 pm-7:40 pm

1 stop21h 50m

$1,182

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 10/5

1:30 am-7:15 pm

1 stop25h 45m

Seoul Gimpo Intl

Fri 10/16

1:50 pm-7:20 pm

1 stop21h 30m

$1,184

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 11/16

12:10 am-7:15 pm

1 stop26h 05m

Seoul Gimpo Intl

Fri 12/4

1:50 pm-9:07 pm

2 stops24h 17m

$1,217

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Seoul

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the typical price of a round-trip flight between Seattle and Seoul?

What is the cheapest month to fly to Seoul?

The month of January is another great option to travel to Seoul, with average flight prices from Seattle averaging around $333.

What is the cheapest day to depart on your flight to Seoul?

According to our data, Wednesday is the cheapest day to fly to Seoul from Seattle. The lowest ticket price found for a Wednesday departure recently was $671. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Friday, with ticket prices averaging around $883.

What is the cheapest time of day to depart on your flight to Seoul?

Flying to Seoul from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $732 when looking at flights departing in the evening. In the morning is when there is more demand to fly to Seoul, so prices are often more expensive at around $876 per ticket.

What is the cheapest Seattle/Tacoma Intl to Seoul flight route?

Fly from Seattle/Tacoma Intl to Incheon Intl for the best Seattle/Tacoma Intl - Seoul flight prices

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

You are more likely to see cheaper flights to Seoul from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around $856 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from Seattle for as low as $581 on momondo.

What cabin class options are available on Seattle to Seoul flights?

There are 3 cabin classes available to choose from on Seattle to Seoul flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Seoul flights?

No. A direct flight is the cheapest option for a flight between Seattle to Seoul.

How have Seattle to Seoul flight prices changed over time?

As of May 2026, prices for Seattle to Seoul flights are approximately 33% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Seoul

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Seoul according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Seoul (SEA to SEL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Seoul

Best Price Found	$436
Fastest flight time	11h 20m
Direct flights	Every day
Airports in Seoul	2 airports

The best one-way flight to Seoul from Seattle in the past 72 hours is $436. The best round-trip flight deal from Seattle to Seoul found on momondo in the last 72 hours is $824.

The fastest flight from Seattle to Seoul takes 11h 20m

Direct flights go from Seattle to Seoul every day.

There are 2 airports in Seoul. From Seattle there are direct flights to Incheon Intl (ICN).

Search flight deals

Frequently asked questions about flying from Seattle to Seoul

How far is Seattle/Tacoma Intl to Seoul by plane?
The distance between Seattle/Tacoma Intl and Seoul is about 5167.4 mi. By plane, this route typically takes 11h 20m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Seoul?
Prices for flights from Seattle/Tacoma Intl Airport to Seoul are updated daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Seoul?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Seoul is 9 as of May 2026.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Seoul?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Seoul.
What documentation or ID do you need to fly to Seoul?
The travel and health documents you'll need for your trip to Seoul may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seoul. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Seoul?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Seoul is Boeing 787-10 Dreamliner (36.15% of total bookings). The next most popular plane models are Airbus A350-900 (25.35%), Boeing 787-9 Dreamliner (12.06%), and Boeing 777-200/200ER (10.12%).
What is the most popular airline from Seattle to Seoul?
momondo data reveals that the most frequently booked airline on the route from Seattle to Seoul is Korean Air, representing 31% of all bookings. The subsequent popular airlines are Delta at 23%, Asiana Airlines at 19%, and Alaska Airlines at 15%.

Best airlines flying from Seattle to Seoul

Compare and see reviews for airlines that fly from Seattle to Seoul with momondo

Airline	Rating	Free Cancellation	Price
Hawaiian Airlines	PriceFrom $160	Free Cancellation	Rating 7.8 2,835 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $335	Free Cancellation	Rating 7.9 12,395 reviews	Search Alaska Airlines flights
Alaska Airlines	PriceFrom $518	Free Cancellation	Rating 0.0	Search Alaska Airlines flights
Air Canada	PriceFrom $524	Free Cancellation	Rating 7.1 11,075 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $796	Free Cancellation	Rating 8.1 534 reviews	Search Asiana Airlines flights
Delta	PriceFrom $839	Free Cancellation	Rating 7.9 8,449 reviews	Search Delta flights
Korean Air	PriceFrom $843	Free Cancellation	Rating 8.4 1,217 reviews	Search Korean Air flights
China Airlines	PriceFrom $847	Free Cancellation	Rating 8.3 826 reviews	Search China Airlines flights
EVA Air	PriceFrom $1,019	Free Cancellation	Rating 8.5 1,457 reviews	Search EVA Air flights

Korean Air Flights From Seattle to Seoul
Korean Air operates around 14 flights from Seattle to Seoul every week. The average price of these flights found in the last 72 hours has been $974, but momondo users have found Korean Air deals from Seattle to Seoul from as low as $843 round-trip. Korean Air has been scored 8.4/10 in 1,217 reviews.
Asiana Airlines Flights From Seattle to Seoul
Asiana Airlines (8.1/10 from 534 reviews) operates around 2 flights from Seattle to Seoul in any given week. The average Asiana Airlines airfare for this route is around $883, with deals from around $796 rare but found on momondo. Referenced prices are for round-trip Seattle to Seoul flight searches in the last 72 hours.

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Seoul?

Finding the right flight to Seoul from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Seoul quick and easy, saving you time and money.

Can I find flights from Seattle to Seoul with flexible booking policies on momondo?

Yes. All flights to Seoul from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to Seoul?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Seoul.

I’m not ready to book a flight from Seattle to Seoul right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to Seoul flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Seattle to Seoul from $442

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Seoul departing on 9/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Our best WestJet deals on Seattle to Seoul flight tickets

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How to get the cheapest flight ticket from Seattle to Seoul

What is the typical price of a round-trip flight between Seattle and Seoul?

What is the cheapest month to fly to Seoul?

What is the cheapest day to depart on your flight to Seoul?

What is the cheapest time of day to depart on your flight to Seoul?

What is the cheapest Seattle/Tacoma Intl to Seoul flight route?

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

What cabin class options are available on Seattle to Seoul flights?

Can stopping save me money on Seattle to Seoul flights?

How have Seattle to Seoul flight prices changed over time?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Seoul?

What airlines fly to Seoul?

Which airport is the most popular layover for flights between Seattle and Seoul?

Which layover airport offers the lowest fares from Seattle to Seoul?

Which layover airport has the shortest travel time from Seattle to Seoul?

Which layover airport has the shortest connection time from Seattle to Seoul?

How many flights depart from Seattle to Seoul on average per day?

How many flights depart from Seattle to Seoul on average per week?

When to book flights from Seattle to Seoul

Cheap Seattle to Seoul (SEA to SEL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Seoul

Best Price Found

Fastest flight time

Direct flights

Airports in Seoul

Frequently asked questions about flying from Seattle to Seoul

Best airlines flying from Seattle to Seoul

Compare and see reviews for airlines that fly from Seattle to Seoul with momondo

Korean Air Flights From Seattle to Seoul

Asiana Airlines Flights From Seattle to Seoul

Why use momondo?

An easier way to manage your Seoul trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul

Fly your favorite airline to Seoul

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Seoul

List of cabin classes available on flights landing in Seoul. Availability may vary depending on flight origin and airline.

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Popular flights according to clicks in the last 7 days on momondo

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