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

The number of flights available between Seattle and South Korea is 5 per day as of August 2025. The most frequent departure time is 2:00PM, with 100% of daily flights leaving in the afternoon.

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.

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

As of August 2025, there are 39 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Wed, with 21% 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 Hawaiian Airlines are the most popular carriers operating from Seattle/Tacoma Intl to South Korea

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 August 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.

$327 Cheap Flights from Seattle to South Korea in 2025

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Find the cheapest flights from Seattle to South Korea

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

2:55 pm - 6:45 pmSEA-ICN

35h 50m3 stops

5:45 pm - 9:21 amICN-SEA

31h 36m1 stop

$800

Find Deal

Fri, Oct 3 - Sat, Oct 11

10:05 am - 10:50 pmSEA-ICN

19h 45m2 stops

6:55 pm - 7:16 pmICN-SEA

17h 21m1 stop

$801

Find Deal

Mon, Nov 10 - Mon, Dec 8

2:15 pm - 5:55 pmSEA-ICN

11h 40mnonstop

6:20 pm - 12:30 pmICN-SEA

10h 10mnonstop

$802Asiana Airlines

Find Deal

Mon, Sep 8 - Mon, Sep 15

5:30 am - 4:05 pmSEA-ICN

18h 35m1 stop

5:45 pm - 10:26 pmICN-SEA

20h 41m1 stop

$803Air Canada

Find Deal

Fri, Sep 26 - Sat, Oct 4

10:00 am - 4:05 pmSEA-ICN

14h 05m1 stop

5:45 pm - 2:16 pmICN-SEA

12h 31m1 stop

$811Air Canada

Find Deal

Wed, Oct 1 - Sat, Oct 11

12:35 pm - 4:30 pmSEA-ICN

11h 55mnonstop

8:25 pm - 10:25 pmICN-SEA

18h 00m1 stop

$812Korean Air

Find Deal

Sat, Sep 13 - Sun, Sep 28

7:00 am - 5:20 pmSEA-ICN

18h 20m1 stop

4:40 pm - 10:40 amICN-SEA

10h 00mnonstop

$816Korean Air

Find Deal

Fri, Oct 3 - Sat, Oct 11

2:15 pm - 5:55 pmSEA-ICN

11h 40mnonstop

6:20 pm - 12:30 pmICN-SEA

10h 10mnonstop

$822Asiana Airlines

Find Deal

Tue, Sep 9 - Tue, Sep 23

12:35 pm - 8:45 pmSEA-PUS

16h 10m1 stop

8:45 am - 1:30 pmPUS-SEA

20h 45m1 stop

$956Delta

Find Deal

Tue, Sep 30 - Mon, Oct 13

7:20 am - 8:45 pmSEA-PUS

21h 25m2 stops

7:00 am - 10:40 amPUS-SEA

19h 40m1 stop

$961Delta

Find Deal

Tue, Sep 30 - Mon, Oct 13

China Airlines flights from Seattle to South Korea

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

China Airlines

Nov 9

SEA12:10 amSeattle/Tacoma Intl

26h 05m

1 stop

ICN7:15 pmIncheon Intl

Nov 20

ICN8:15 pmIncheon Intl

14h 55m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

$833

Find similar

China Airlines

Sep 29

SEA1:10 amSeattle/Tacoma Intl

25h 50m

1 stop

PUS7:00 pmBusan Gimhae

Oct 13

PUS12:15 pmBusan Gimhae

23h 05m

1 stop

SEA7:20 pmSeattle/Tacoma Intl

$1,000

Find similar

Asiana Airlines flights from Seattle to South Korea

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

Asiana Airlines

Sep 8

SEA2:15 pmSeattle/Tacoma Intl

11h 40m

ICN5:55 pmIncheon Intl

Sep 15

ICN6:20 pmIncheon Intl

10h 10m

SEA12:30 pmSeattle/Tacoma Intl

$802

Find similar

Asiana Airlines

Sep 9

SEA2:15 pmSeattle/Tacoma Intl

11h 40m

ICN5:55 pmIncheon Intl

Sep 23

ICN6:20 pmIncheon Intl

10h 10m

SEA12:30 pmSeattle/Tacoma Intl

$822

Find similar

Asiana Airlines

Sep 7

SEA2:15 pmSeattle/Tacoma Intl

11h 40m

ICN5:55 pmIncheon Intl

Sep 21

ICN6:20 pmIncheon Intl

10h 10m

SEA12:30 pmSeattle/Tacoma Intl

$824

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 10/3

2:55 pm-6:45 pm

3 stops35h 50m

Incheon Intl

Sat 10/11

5:45 pm-9:21 am

1 stop31h 36m

$800

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 11/10

10:05 am-10:50 pm

2 stops19h 45m

Incheon Intl

Mon 12/8

6:55 pm-7:16 pm

1 stop17h 21m

$801

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 9/8

2:15 pm-5:55 pm

Nonstop11h 40m

Incheon Intl

Mon 9/15

6:20 pm-12:30 pm

Nonstop10h 10m

$802

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 9/26

5:30 am-4:05 pm

1 stop18h 35m

Incheon Intl

Sat 10/4

5:45 pm-10:26 pm

1 stop20h 41m

$803

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 10/1

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

Sat 10/11

5:45 pm-2:16 pm

1 stop12h 31m

$811

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 9/13

12:35 pm-4:30 pm

Nonstop11h 55m

Incheon Intl

Sun 9/28

8:25 pm-10:25 pm

1 stop18h 00m

$812

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 10/3

7:00 am-5:20 pm

1 stop18h 20m

Incheon Intl

Sat 10/11

4:40 pm-10:40 am

Nonstop10h 00m

$816

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 9/9

2:15 pm-5:55 pm

Nonstop11h 40m

Incheon Intl

Tue 9/23

6:20 pm-12:30 pm

Nonstop10h 10m

$822

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Tue 9/30

12:35 pm-8:45 pm

1 stop16h 10m

Busan Gimhae

Mon 10/13

8:45 am-1:30 pm

1 stop20h 45m

$956

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Tue 9/30

7:20 am-8:45 pm

2 stops21h 25m

Busan Gimhae

Mon 10/13

7:00 am-10:40 am

1 stop19h 40m

$961

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 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 February, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $930.

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 $861. 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 $1,030.

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 $737 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 $1,171 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 $986 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	$378
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 $378. The best round-trip flight deal from Seattle to South Korea found on momondo in the last 72 hours is $700.

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 August 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 787-10 Dreamliner (24.49% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (22.69%), Airbus A350-900 (18.63%), and Boeing 777-200LR (14.43%).

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 7,977 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 8,944 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $645	Free Cancellation	Rating 7.8 2,690 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $770	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $822	Free Cancellation	Rating 8.2 477 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $876	Free Cancellation	Rating 8.4 1,133 reviews	Search Korean Air flights
China Airlines	PriceFrom $886	Free Cancellation	Rating 8.3 765 reviews	Search China Airlines flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,235 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $1,007	Free Cancellation	Rating 7.3 3,955 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 $518

Flights to Jeju Cityfrom $645

Flights to Busanfrom $743

Flights to Gwangjufrom $1,212

Flights to Muan

Cheap flights from Seattle to South Korea from $327

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 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from Seattle to South Korea

Cheap round-trip flights

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Cheap last minute flights

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China Airlines flights from Seattle to South Korea

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

Asiana Airlines flights from Seattle to South Korea

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

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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

What is the cheapest month to fly to South Korea?

If you aren’t able to travel to South Korea during the month of February, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $930.

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 Hawaiian Airlines 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 5 per day as of August 2025. The most frequent departure time is 2:00PM, with 100% of daily flights leaving in the afternoon.

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

As of August 2025, there are 39 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Wed, with 21% 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