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

The number of flights available between Seattle and South Korea is 8 per day as of September 2025. The most frequent departure time is 12:00PM, with 100% of daily flights leaving in the afternoon.

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

As of September 2025, there are 58 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Thu, with 17% of flights taking off on this day.

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

WestJet, Asiana Airlines, and Korean Air are the most popular carriers operating from Seattle/Tacoma Intl to South Korea

What airlines fly to South Korea?

Korean Air, Asiana Airlines and Air Canada are the top three most popular airlines that fly to South Korea 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 South Korea. Keep in mind that there are 10 different airlines that fly to South Korea 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 South Korea?

Prices for flights from Seattle/Tacoma Intl Airport to South Korea are refreshed on a daily basis.

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

There are 10 operators available for flights from Seattle/Tacoma Intl Airport to South Korea as of September 2025.

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

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 South Korea.

What documentation or ID do you need to fly to South Korea?

The travel and health documents you'll need for your trip to South Korea 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 South Korea. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$293 Cheap Flights from Seattle to South Korea in 2025/26

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Find the cheapest flights from Seattle to South Korea

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

10:08 am - 4:10 pmSEA-ICN

38h 02m1 stop

9:00 pm - 1:55 pmICN-SEA

9h 55mnonstop

$757

Find Deal

Sat, Nov 1 - Sun, Nov 16

5:50 am - 5:10 pmSEA-ICN

18h 20m1 stop

6:55 pm - 7:16 pmICN-SEA

17h 21m1 stop

$772Air Canada

Find Deal

Thu, Nov 6 - Tue, Nov 11

3:55 pm - 11:15 amSEA-ICN

27h 20m1 stop

8:05 pm - 2:20 pmICN-SEA

10h 15mnonstop

$789Delta

Find Deal

Fri, Sep 26 - Thu, Oct 30

2:15 pm - 5:55 pmSEA-ICN

11h 40mnonstop

6:20 pm - 12:30 pmICN-SEA

10h 10mnonstop

$802Asiana Airlines

Find Deal

Sat, Oct 4 - Sun, Oct 12

12:50 pm - 4:40 pmSEA-ICN

11h 50mnonstop

9:00 pm - 9:48 amICN-SEA

28h 48m1 stop

$808Korean Air

Find Deal

Fri, Oct 3 - Fri, Oct 10

2:15 pm - 5:55 pmSEA-ICN

11h 40mnonstop

6:20 pm - 12:30 pmICN-SEA

10h 10mnonstop

$814Asiana Airlines

Find Deal

Wed, Oct 1 - Sat, Oct 11

3:45 pm - 5:00 amSEA-ICN

21h 15m1 stop

4:40 pm - 10:40 amICN-SEA

10h 00mnonstop

$816Korean Air

Find Deal

Wed, Oct 1 - Wed, Oct 8

12:15 pm - 4:30 pmSEA-ICN

12h 15mnonstop

8:05 pm - 1:20 pmICN-SEA

10h 15mnonstop

$830Delta

Find Deal

Thu, Oct 23 - Mon, Nov 3

1:10 am - 7:00 pmSEA-PUS

25h 50m1 stop

11:50 am - 7:10 pmPUS-SEA

23h 20m1 stop

$896China Airlines

Find Deal

Tue, Oct 14 - Thu, Oct 30

1:10 am - 7:00 pmSEA-PUS

25h 50m1 stop

10:10 am - 6:10 pmPUS-SEA

25h 00m1 stop

$917China Airlines

Find Deal

Mon, Oct 20 - Tue, Nov 11

Asiana Airlines flights from Seattle to South Korea

Our best Asiana Airlines deals on Seattle to South Korea flight tickets

Asiana Airlines

Oct 4

SEA2:15 pmSeattle/Tacoma Intl

11h 40m

ICN5:55 pmIncheon Intl

Oct 12

ICN6:20 pmIncheon Intl

10h 10m

SEA12:30 pmSeattle/Tacoma Intl

$802

Find similar

Asiana Airlines

Oct 1

SEA2:15 pmSeattle/Tacoma Intl

11h 40m

ICN5:55 pmIncheon Intl

Oct 11

ICN6:20 pmIncheon Intl

10h 10m

SEA12:30 pmSeattle/Tacoma Intl

$814

Find similar

Asiana Airlines

Oct 21

SEA2:15 pmSeattle/Tacoma Intl

11h 40m

ICN5:55 pmIncheon Intl

Nov 4

ICN9:00 pmIncheon Intl

9h 55m

SEA1:55 pmSeattle/Tacoma Intl

$815

Find similar

Korean Air flights from Seattle to South Korea

Our best Korean Air deals on Seattle to South Korea flight tickets

Korean Air

Oct 3

SEA12:50 pmSeattle/Tacoma Intl

11h 50m

ICN4:40 pmIncheon Intl

Oct 10

ICN9:00 pmIncheon Intl

28h 48m

1 stop

SEA9:48 amSeattle/Tacoma Intl

$808

Find similar

Korean Air

Oct 1

SEA3:45 pmSeattle/Tacoma Intl

21h 15m

1 stop

ICN5:00 amIncheon Intl

Oct 8

ICN4:40 pmIncheon Intl

10h 00m

SEA10:40 amSeattle/Tacoma Intl

$816

Find similar

Korean Air

Oct 28

SEA12:05 pmSeattle/Tacoma Intl

30h 45m

2 stops

PUS10:50 amBusan Gimhae

Nov 4

PUS7:55 amBusan Gimhae

23h 04m

2 stops

SEA1:59 pmSeattle/Tacoma Intl

$900

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 11/1

10:08 am-4:10 pm

1 stop38h 02m

Incheon Intl

Sun 11/16

9:00 pm-1:55 pm

Nonstop9h 55m

$757

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 11/6

5:50 am-5:10 pm

1 stop18h 20m

Incheon Intl

Tue 11/11

6:55 pm-7:16 pm

1 stop17h 21m

$772

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 9/26

3:55 pm-11:15 am

1 stop27h 20m

Incheon Intl

Thu 10/30

8:05 pm-2:20 pm

Nonstop10h 15m

$789

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 10/4

2:15 pm-5:55 pm

Nonstop11h 40m

Incheon Intl

Sun 10/12

6:20 pm-12:30 pm

Nonstop10h 10m

$802

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 10/3

12:50 pm-4:40 pm

Nonstop11h 50m

Incheon Intl

Fri 10/10

9:00 pm-9:48 am

1 stop28h 48m

$808

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 10/1

2:15 pm-5:55 pm

Nonstop11h 40m

Incheon Intl

Sat 10/11

6:20 pm-12:30 pm

Nonstop10h 10m

$814

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 10/1

3:45 pm-5:00 am

1 stop21h 15m

Incheon Intl

Wed 10/8

4:40 pm-10:40 am

Nonstop10h 00m

$816

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 10/23

12:15 pm-4:30 pm

Nonstop12h 15m

Incheon Intl

Mon 11/3

8:05 pm-1:20 pm

Nonstop10h 15m

$830

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Tue 10/14

1:10 am-7:00 pm

1 stop25h 50m

Busan Gimhae

Thu 10/30

11:50 am-7:10 pm

1 stop23h 20m

$896

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Mon 10/20

1:10 am-7:00 pm

1 stop25h 50m

Busan Gimhae

Tue 11/11

10:10 am-6:10 pm

1 stop25h 00m

$917

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Seattle to South Korea

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

Other information

What is the cheapest month to fly to South Korea?

If you aren’t able to travel to South Korea during the month of August, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $914.

What is the cheapest day to depart on your flight to South Korea?

On average, the least expensive day to fly to South Korea from Seattle is on a Monday. momondo users have found tickets for Monday departures for as low as $856. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to South Korea for around $1,028.

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

Flying to South Korea from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as $725 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,401 on average. Flights to South Korea from Seattle in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

How far in advance should I book a flight to South Korea?

You are more likely to see cheaper flights to South Korea from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $1,157 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from Seattle for as low as $983 on momondo.

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to South Korea 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 South Korea flights?

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

Cheap Seattle to South Korea flight deals and tips

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

Best Price Found	$370
Fastest flight time	11h 40m
Direct flights	Every day
Airports in South Korea	1 airport

The best one-way flight to South Korea from Seattle in the past 72 hours is $370. The best round-trip flight deal from Seattle to South Korea found on momondo in the last 72 hours is $678.

The fastest flight from Seattle to South Korea takes 11h 40m

Direct flights go from Seattle to South Korea every day.

There is 1 airport near South Korea: Incheon Intl (ICN)

Search flight deals

When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to South Korea?
Prices for flights from Seattle/Tacoma Intl Airport to South Korea are refreshed on a daily basis.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to South Korea?
There are 10 operators available for flights from Seattle/Tacoma Intl Airport to South Korea as of September 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to South Korea?
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 South Korea.
What documentation or ID do you need to fly to South Korea?
The travel and health documents you'll need for your trip to South Korea 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 South Korea. 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 South Korea?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to South Korea is Boeing 787-9 Dreamliner (24.92% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (23.61%), Airbus A350-900 (17.80%), and Boeing 777-200LR (11.94%).

Best airlines flying from Seattle to South Korea

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $167	Free Cancellation	Rating 7.9 7,954 reviews	Search Delta flights
Alaska Airlines	PriceFrom $182	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $282	Free Cancellation	Rating 7.4 8,929 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $645	Free Cancellation	Rating 7.8 2,723 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $738	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $811	Free Cancellation	Rating 8.2 479 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $863	Free Cancellation	Rating 8.4 1,139 reviews	Search Korean Air flights
China Airlines	PriceFrom $886	Free Cancellation	Rating 8.3 767 reviews	Search China Airlines flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,236 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $1,007	Free Cancellation	Rating 7.3 3,968 reviews	Search Turkish Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to South Korea for you.

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

All flight searches from Seattle to South Korea on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Seattle to South Korea?

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 South Korea.

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

If you are not ready to book a flight from Seattle to South Korea now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to South Korea and let you know when they change.

An easier way to manage your South Korea 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.

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Find better results for your trip to South Korea

Popular cities in South Korea

Flights to Seoulfrom $385

Flights to Busanfrom $726

Flights to Jeju Cityfrom $650

Flights to Daegufrom $972

Flights to Gwangjufrom $1,693

Flights to Ulsanfrom $1,354

Flights to Muan

Flights to Jinjufrom $1,501

Flights to Yeosu

Cheap flights from Seattle to South Korea from $293

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 South Korea departing on 11/16. 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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Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Find the cheapest flights from Seattle to South Korea

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Asiana Airlines flights from Seattle to South Korea

Our best Asiana Airlines deals on Seattle to South Korea flight tickets

Korean Air flights from Seattle to South Korea

Our best Korean Air deals on Seattle to South Korea flight tickets

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Use the filters below to find and compare flights from Seattle to South Korea that are best for you.

See travel insights to South Korea from

How to get the cheapest flight ticket from Seattle to South Korea

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 South Korea?

If you aren’t able to travel to South Korea during the month of August, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $914.

What is the cheapest day to depart on your flight to South Korea?

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

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

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

How far in advance should I book a flight to South Korea?

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to South Korea 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 South Korea flights?

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

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

WestJet, Asiana Airlines, and Korean Air are the most popular carriers operating from Seattle/Tacoma Intl to South Korea

What airlines fly to South Korea?

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

The number of flights available between Seattle and South Korea is 8 per day as of September 2025. The most frequent departure time is 12:00PM, with 100% of daily flights leaving in the afternoon.

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

As of September 2025, there are 58 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Thu, with 17% of flights taking off on this day.

Cheap Seattle to South Korea flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in South Korea

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

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

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

What documentation or ID do you need to fly to South Korea?

What is the most popular plane model from Seattle to South Korea?

Best airlines flying from Seattle to South Korea

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

Why use momondo?

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

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

How can momondo help me find flights from Seattle to South Korea?

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

An easier way to manage your South Korea 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

Popular cities in South Korea

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