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

Vancouver (YVR) was the most common stop: 73% 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 31m.

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

San Francisco (SFO) has the shortest average layover time for this route: 1h 32m.

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

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

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

33 flights are operational weekly from Seattle to Seoul as of July 2026. The most popular departure day for this route is Wed, with 15% of flights per week taking off on this day.

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

Flights via Hong Kong (HKG) offer the lowest average round-trip price of $737.

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 7 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

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

As of July 2026, 4 flights take off from Seattle and land in Seoul each day. The most common flight departure time for this route is 1:00PM, with 63% of daily flights taking off in the afternoon.

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 7 as of July 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Seoul

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 6:45 pm

SEA

ICN

19h 45m

1 stop

8:40 pm - 2:22 pm

ICN

SEA

33h 42m

2 stops

$882Multiple Airlines

Sat, Aug 22 - Tue, Sep 22

10:30 am - 6:45 pm

SEA

ICN

16h 15m

1 stop

8:40 pm - 2:22 pm

ICN

SEA

33h 42m

2 stops

$884Multiple Airlines

Mon, Aug 24 - Sat, Sep 12

10:30 am - 6:45 pm

SEA

ICN

16h 15m

1 stop

8:45 pm - 8:35 am

ICN

SEA

27h 50m

2 stops

$885WestJet

Wed, Aug 26 - Mon, Sep 14

11:00 pm - 10:00 pm

SEA

ICN

31h 00m

2 stops

8:30 pm - 8:05 pm

ICN

SEA

39h 35m

1 stop

$886Multiple Airlines

Sun, Jul 26 - Wed, Aug 19

11:45 am - 10:25 pm

SEA

ICN

18h 40m

1 stop

8:05 pm - 10:05 am

ICN

SEA

30h 00m

1 stop

$887Cathay Pacific

Tue, Oct 13 - Tue, Oct 20

7:00 am - 6:45 pm

SEA

ICN

19h 45m

1 stop

8:45 pm - 9:40 am

ICN

SEA

28h 55m

1 stop

$889WestJet

Sun, Aug 30 - Fri, Sep 11

10:30 am - 6:45 pm

SEA

ICN

16h 15m

1 stop

10:30 pm - 2:22 pm

ICN

SEA

31h 52m

3 stops

$890Multiple Airlines

Wed, Aug 26 - Mon, Sep 14

10:30 am - 6:45 pm

SEA

ICN

16h 15m

1 stop

8:45 pm - 9:40 am

ICN

SEA

28h 55m

1 stop

$891WestJet

Sun, Aug 30 - Mon, Sep 14

2:10 am - 6:10 pm

SEA

GMP

24h 00m

1 stop

1:50 pm - 7:40 pm

GMP

SEA

21h 50m

1 stop

$1,181EVA Air

Sun, Aug 23 - Fri, Sep 11

1:30 am - 12:50 pm

SEA

GMP

19h 20m

1 stop

1:50 pm - 6:10 pm

GMP

SEA

21h 20m

1 stop

$1,184EVA Air

Wed, Sep 30 - Fri, Nov 13

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Korean Air flights from Seattle to Seoul

Our best Korean Air deals on Seattle to Seoul flight tickets

Korean Air

Jul 16

SEA1:05 pmSeattle/Tacoma Intl

11h 45m

ICN4:50 pmIncheon Intl

Jul 20

ICN7:00 pmIncheon Intl

10h 41m

SEA1:41 pmSeattle/Tacoma Intl

$949

Korean Air

Jul 16

SEA7:20 amSeattle/Tacoma Intl

18h 00m

1 stop

ICN5:20 pmIncheon Intl

Jul 20

ICN7:00 pmIncheon Intl

10h 41m

SEA1:41 pmSeattle/Tacoma Intl

$954

Korean Air

Jul 15

SEA1:05 pmSeattle/Tacoma Intl

11h 45m

ICN4:50 pmIncheon Intl

Jul 22

ICN7:00 pmIncheon Intl

10h 41m

SEA1:41 pmSeattle/Tacoma Intl

$986

WestJet flights from Seattle to Seoul

Our best WestJet deals on Seattle to Seoul flight tickets

WestJet

Aug 26

SEA10:30 amSeattle/Tacoma Intl

16h 15m

1 stop

ICN6:45 pmIncheon Intl

Sep 14

ICN8:45 pmIncheon Intl

27h 50m

2 stops

SEA8:35 amSeattle/Tacoma Intl

$885

WestJet

Aug 30

SEA7:00 amSeattle/Tacoma Intl

19h 45m

1 stop

ICN6:45 pmIncheon Intl

Sep 11

ICN8:45 pmIncheon Intl

28h 55m

1 stop

SEA9:40 amSeattle/Tacoma Intl

$889

WestJet

Aug 30

SEA10:30 amSeattle/Tacoma Intl

16h 15m

1 stop

ICN6:45 pmIncheon Intl

Sep 14

ICN8:45 pmIncheon Intl

28h 55m

1 stop

SEA9:40 amSeattle/Tacoma Intl

$891

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 8/22

7:00 am-6:45 pm

1 stop19h 45m

Incheon Intl

Tue 9/22

8:40 pm-2:22 pm

2 stops33h 42m

$882

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 8/24

10:30 am-6:45 pm

1 stop16h 15m

Incheon Intl

Sat 9/12

8:40 pm-2:22 pm

2 stops33h 42m

$884

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 8/26

10:30 am-6:45 pm

1 stop16h 15m

Incheon Intl

Mon 9/14

8:45 pm-8:35 am

2 stops27h 50m

$885

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 7/26

11:00 pm-10:00 pm

2 stops31h 00m

Incheon Intl

Wed 8/19

8:30 pm-8:05 pm

1 stop39h 35m

$886

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 10/13

11:45 am-10:25 pm

1 stop18h 40m

Incheon Intl

Tue 10/20

8:05 pm-10:05 am

1 stop30h 00m

$887

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 8/30

7:00 am-6:45 pm

1 stop19h 45m

Incheon Intl

Fri 9/11

8:45 pm-9:40 am

1 stop28h 55m

$889

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 8/26

10:30 am-6:45 pm

1 stop16h 15m

Incheon Intl

Mon 9/14

10:30 pm-2:22 pm

3 stops31h 52m

$890

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 8/30

10:30 am-6:45 pm

1 stop16h 15m

Incheon Intl

Mon 9/14

8:45 pm-9:40 am

1 stop28h 55m

$891

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

$1,181

Quickest round-trip

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 9/30

1:30 am-12:50 pm

1 stop19h 20m

Seoul Gimpo Intl

Fri 11/13

1:50 pm-6:10 pm

1 stop21h 20m

$1,184

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 $664. 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 $879.

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

Flying to Seoul from Seattle at noon is the least expensive time of day to depart. momondo users have found prices as low as $664 when looking at flights departing at noon. In the morning is when there is more demand to fly to Seoul, so prices are often more expensive at around $872 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 $838 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 $545 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?

You could potentially save up to 17% on your flight if you consider stops on a Seattle to Seoul flight.

How have Seattle to Seoul flight prices changed over time?

As of July 2026, prices for Seattle to Seoul flights are approximately 72% 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	$514
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 $514. The best round-trip flight deal from Seattle to Seoul found on momondo in the last 72 hours is $896.

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 7 as of July 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 (39.21% of total bookings). The next most popular plane models are Airbus A350-900 (24.79%), Boeing 777-200/200ER (11.75%), and Boeing 787-9 Dreamliner (8.43%).
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 32% of all bookings. The subsequent popular airlines are Delta at 25%, 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 2,825 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $335	Free Cancellation	Rating 7.9 12,616 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $524	Free Cancellation	Rating 7.1 11,295 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $798	Free Cancellation	Rating 8.1 550 reviews	Search Asiana Airlines flights
Delta	PriceFrom $829	Free Cancellation	Rating 7.8 8,455 reviews	Search Delta flights
Korean Air	PriceFrom $843	Free Cancellation	Rating 8.4 1,220 reviews	Search Korean Air flights
EVA Air	PriceFrom $1,044	Free Cancellation	Rating 8.5 1,484 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 $990, 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 1,220 reviews.
Alaska Airlines Flights From Seattle to Seoul
Alaska Airlines (7.9/10 from 12,616 reviews) operates around 5 flights from Seattle to Seoul in any given week. The average Alaska Airlines airfare for this route is around $338, with deals from around $335 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 $364

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 8/27. 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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Korean Air flights from Seattle to Seoul

Our best Korean Air deals on Seattle to Seoul flight tickets

WestJet flights from Seattle to Seoul

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

Alaska 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.

Popular cities in South Korea

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

Fly to other destinations from Seattle

According to popular flight searches on momondo this year

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