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

Flights via Vancouver (YVR) offer the lowest average round-trip price of $910.

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

As of November 2025, 6 flights take off from Seattle and land in Seoul each day. The most common flight departure time for this route is 11:00AM, with 47% of daily flights taking off in the afternoon.

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

47 flights are operational weekly from Seattle to Seoul as of November 2025. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

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

Taipei City (TPE) was the most common stop: 70% of momondo users choosing 1-stop flights on this route connected there.

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

Vancouver (YVR) has the shortest average layover time for this route: 1h 46m.

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 20m.

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

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

What airlines fly to Seoul?

Korean Air, Asiana Airlines and Delta are the top three most popular airlines that fly to Seoul from Seattle according to our data. Korean Air is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 10 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

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 10 as of November 2025.

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.

$340 Cheap Flights from Seattle to Seoul in 2025/26

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Cheap round-trip flights

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2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

9:10 pm - 2:09 pmICN-SEA

32h 59m2 stops

$599Multiple Airlines

Find Deal

Sat, May 16 - Thu, May 28

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

9:10 pm - 1:08 pmICN-SEA

31h 58m2 stops

$617Multiple Airlines

Find Deal

Sat, May 16 - Tue, May 26

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

9:10 pm - 6:56 amICN-SEA

25h 46m1 stop

$636Multiple Airlines

Find Deal

Sat, May 16 - Tue, May 26

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

8:45 pm - 7:50 pmICN-SEA

15h 05m1 stop

$642Multiple Airlines

Find Deal

Mon, May 11 - Tue, Jun 16

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

9:10 pm - 6:56 amICN-SEA

25h 46m1 stop

$643Multiple Airlines

Find Deal

Sat, May 16 - Thu, May 28

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

6:20 pm - 9:00 pmICN-SEA

18h 40m1 stop

$645Multiple Airlines

Find Deal

Sat, May 16 - Wed, May 27

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

6:20 pm - 9:00 pmICN-SEA

18h 40m1 stop

$650Multiple Airlines

Find Deal

Sat, May 16 - Fri, May 29

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

9:10 pm - 6:56 amICN-SEA

25h 46m1 stop

$657Multiple Airlines

Find Deal

Sat, May 16 - Sat, May 30

12:30 pm - 10:05 pmSEA-GMP

16h 35m1 stop

8:00 am - 4:04 pmGMP-SEA

25h 04m2 stops

$886Japan Airlines

Find Deal

Mon, Jan 19 - Wed, Mar 4

8:25 am - 10:05 pmSEA-GMP

20h 40m2 stops

8:00 am - 4:04 pmGMP-SEA

25h 04m2 stops

$888Japan Airlines

Find Deal

Tue, Feb 3 - Tue, Feb 17

Hainan Airlines flights from Seattle to Seoul

Our best Hainan Airlines deals on Seattle to Seoul flight tickets

Hainan Airlines

Dec 4

SEA10:05 amSeattle/Tacoma Intl

41h 55m

2 stops

ICN9:00 pmIncheon Intl

Dec 17

ICN10:10 pmIncheon Intl

26h 55m

2 stops

SEA8:05 amSeattle/Tacoma Intl

$748

Find similar

Hainan Airlines

Feb 19

SEA10:05 amSeattle/Tacoma Intl

41h 55m

2 stops

ICN9:00 pmIncheon Intl

Mar 4

ICN10:10 pmIncheon Intl

26h 55m

2 stops

SEA8:05 amSeattle/Tacoma Intl

$749

Find similar

Hainan Airlines

Mar 26

SEA11:05 amSeattle/Tacoma Intl

41h 55m

2 stops

ICN9:00 pmIncheon Intl

Apr 15

ICN9:15 pmIncheon Intl

27h 50m

2 stops

SEA9:05 amSeattle/Tacoma Intl

$759

Find similar

Air Canada flights from Seattle to Seoul

Our best Air Canada deals on Seattle to Seoul flight tickets

Air Canada

Feb 7

SEA5:50 amSeattle/Tacoma Intl

17h 10m

1 stop

ICN4:00 pmIncheon Intl

Feb 11

ICN5:55 pmIncheon Intl

18h 21m

1 stop

SEA7:16 pmSeattle/Tacoma Intl

$685

Find similar

Air Canada

Nov 30

SEA5:45 amSeattle/Tacoma Intl

18h 25m

1 stop

ICN5:10 pmIncheon Intl

Dec 10

ICN5:55 pmIncheon Intl

21h 51m

1 stop

SEA10:46 pmSeattle/Tacoma Intl

$691

Find similar

Air Canada

Dec 2

SEA8:00 pmSeattle/Tacoma Intl

28h 10m

1 stop

ICN5:10 pmIncheon Intl

Dec 16

ICN6:55 pmIncheon Intl

20h 51m

1 stop

SEA10:46 pmSeattle/Tacoma Intl

$763

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 5/16

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Thu 5/28

9:10 pm-2:09 pm

2 stops32h 59m

$599

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 5/16

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Tue 5/26

9:10 pm-1:08 pm

2 stops31h 58m

$617

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 5/16

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Tue 5/26

9:10 pm-6:56 am

1 stop25h 46m

$636

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 5/11

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Tue 6/16

8:45 pm-7:50 pm

1 stop15h 05m

$642

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 5/16

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Thu 5/28

9:10 pm-6:56 am

1 stop25h 46m

$643

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 5/16

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Wed 5/27

6:20 pm-9:00 pm

1 stop18h 40m

$645

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 5/16

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Fri 5/29

6:20 pm-9:00 pm

1 stop18h 40m

$650

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 5/16

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Sat 5/30

9:10 pm-6:56 am

1 stop25h 46m

$657

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 1/19

12:30 pm-10:05 pm

1 stop16h 35m

Seoul Gimpo Intl

Wed 3/4

8:00 am-4:04 pm

2 stops25h 04m

$886

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Tue 2/3

8:25 am-10:05 pm

2 stops20h 40m

Seoul Gimpo Intl

Tue 2/17

8:00 am-4:04 pm

2 stops25h 04m

$888

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 cheapest month to fly to Seoul?

The month of August is another great option to travel to Seoul, with average flight prices from Seattle averaging around $900.

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

According to our data, Monday is the cheapest day to fly to Seoul from Seattle. The lowest ticket price found for a Monday departure recently was $814. 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 $1,001.

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 $715 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,401 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 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 $1,099 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 $969 on momondo.

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl 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 1% 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 November 2025, prices for Seattle to Seoul flights are approximately 32% 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	$389
Fastest flight time	11h 45m
Direct flights	Every day
Airports in Seoul	1 airport

The best one-way flight to Seoul from Seattle in the past 72 hours is $389. The best round-trip flight deal from Seattle to Seoul found on momondo in the last 72 hours is $681.

The fastest flight from Seattle to Seoul takes 11h 45m

Direct flights go from Seattle to Seoul every day.

There is 1 airport near Seoul: Incheon Intl (ICN)

Search flight deals

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 55m.
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 10 as of November 2025.
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 787-9 Dreamliner (30.11% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (19.66%), Airbus A350-900 (15.38%), and Boeing 787 Dreamliner (8.51%).
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 33% of all bookings. The subsequent popular airlines are Asiana Airlines at 27%, Delta at 17%, and Air Canada at 10%.

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
Delta	PriceFrom $167	Free Cancellation	Rating 7.9 7,999 reviews	Search Delta flights
Alaska Airlines	PriceFrom $190	Free Cancellation	Rating 8.0 11,352 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $282	Free Cancellation	Rating 7.4 9,046 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $282	Free Cancellation	Rating 7.8 2,814 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $709	Free Cancellation	Rating 7.1 10,476 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $802	Free Cancellation	Rating 8.2 490 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $850	Free Cancellation	Rating 8.4 1,170 reviews	Search Korean Air flights
China Airlines	PriceFrom $886	Free Cancellation	Rating 8.3 782 reviews	Search China Airlines flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,283 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $1,007	Free Cancellation	Rating 7.3 4,059 reviews	Search Turkish Airlines 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 $1,171, but momondo users have found Korean Air deals from Seattle to Seoul from as low as $850 round-trip. Korean Air has been scored 8.4/10 in 1,170 reviews.
Asiana Airlines Flights From Seattle to Seoul
Asiana Airlines (8.2/10 from 490 reviews) operates around 4 flights from Seattle to Seoul in any given week. The average Asiana Airlines airfare for this route is around $1,080, with deals from around $802 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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Fly into one of these airports located in Seoul

Seoul Gimpo Intl Airport

Incheon Intl Airport

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Cheap flights from Seattle to Seoul from $340

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 3/12. 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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Hainan Airlines flights from Seattle to Seoul

Our best Hainan Airlines deals on Seattle to Seoul flight tickets

Air Canada flights from Seattle to Seoul

Our best Air Canada deals on Seattle to Seoul flight tickets

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See travel insights to Seoul from

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

What is the cheapest month to fly to Seoul?

The month of August is another great option to travel to Seoul, with average flight prices from Seattle averaging around $900.

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?

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 to Seoul?

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl 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 1% 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 November 2025, prices for Seattle to Seoul flights are approximately 32% cheaper when compared to flights at the same time last year.

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

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

What airlines fly to Seoul?

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

Taipei City (TPE) was the most common stop: 70% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Vancouver (YVR) offer the lowest average round-trip price of $910.

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 20m.

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

Vancouver (YVR) has the shortest average layover time for this route: 1h 46m.

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

As of November 2025, 6 flights take off from Seattle and land in Seoul each day. The most common flight departure time for this route is 11:00AM, with 47% of daily flights taking off in the afternoon.

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

47 flights are operational weekly from Seattle to Seoul as of November 2025. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

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

How far is Seattle/Tacoma Intl to Seoul by plane?

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

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

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

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

What is the most popular plane model from Seattle to Seoul?

What is the most popular airline 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?

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

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

How can momondo help me find flights 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?

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