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

Delta, Alaska Airlines, and Japan Airlines are the most popular carriers operating from Seattle/Tacoma Intl to South Korea

How often are flights from Seattle to South Korea delayed?

Historically, on average around 33% of flights between Seattle and South Korea have experienced a delay on any given week. The average delay length over the past 12 months has been 185 minutes.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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 November 2025. The most frequent departure time is 11:00AM, with 47% of daily flights leaving in the afternoon.

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

As of November 2025, there are 59 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Wed, with 17% of flights taking off on this day.

Which airline has the best punctuality record on Seattle to South Korea flights?

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

What airlines fly to South Korea?

Korean Air, Asiana Airlines and Delta 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 44% 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.

What is the most punctual flight time for Seattle to South Korea flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

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 November 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.

$184 Cheap Flights from Seattle to South Korea in 2025/26

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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.

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

9:10 pm - 2:09 pmICN-SEA

32h 59m2 stops

$574Multiple Airlines

Find Deal

Mon, Apr 27 - Sat, May 2

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

9:10 pm - 2:09 pmICN-SEA

32h 59m2 stops

$591Multiple Airlines

Find Deal

Wed, Apr 22 - Thu, Apr 30

2:40 pm - 6:35 pmSEA-ICN

11h 55mnonstop

9:10 pm - 2:09 pmICN-SEA

32h 59m2 stops

$592Multiple Airlines

Find Deal

Mon, Apr 27 - Thu, May 14

1:10 am - 11:15 amSEA-PUS

18h 05m1 stop

12:15 pm - 7:30 pmPUS-SEA

23h 15m1 stop

$807China Airlines

Find Deal

Mon, May 11 - Tue, May 26

11:50 am - 6:20 amSEA-CJU

26h 30m1 stop

7:55 am - 10:10 amCJU-SEA

18h 15m1 stop

$870Cathay Pacific

Find Deal

Tue, Apr 7 - Wed, Apr 29

11:50 am - 1:35 pmSEA-PUS

33h 45m1 stop

7:45 am - 10:10 amPUS-SEA

18h 25m1 stop

$870Cathay Pacific

Find Deal

Tue, May 12 - Tue, May 26

11:00 am - 10:50 amSEA-PUS

30h 50m1 stop

12:00 pm - 10:00 amPUS-SEA

14h 00m1 stop

$957Korean Air

Find Deal

Sun, Mar 1 - Sat, Mar 21

11:25 am - 7:45 pmSEA-TAE

15h 20m1 stop

7:40 am - 1:20 pmTAE-SEA

22h 40m1 stop

$977Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

12:35 pm - 8:45 pmSEA-PUS

16h 10m1 stop

10:25 am - 10:00 amPUS-SEA

15h 35m1 stop

$983Korean Air

Find Deal

Sat, Mar 14 - Sun, Mar 22

7:15 am - 8:10 amSEA-PUS

31h 55m2 stops

4:10 pm - 9:00 amPUS-SEA

33h 50m1 stop

$984Delta

Find Deal

Thu, Jan 8 - Thu, Jan 15

Asiana Airlines flights from Seattle to South Korea

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

Asiana Airlines

Dec 2

SEA12:10 amSeattle/Tacoma Intl

12h 10m

ICN5:20 amIncheon Intl

Dec 20

ICN9:00 pmIncheon Intl

9h 55m

SEA1:55 pmSeattle/Tacoma Intl

$850

Find similar

Asiana Airlines

Dec 1

SEA12:10 amSeattle/Tacoma Intl

12h 10m

ICN5:20 amIncheon Intl

Dec 14

ICN9:00 pmIncheon Intl

9h 55m

SEA1:55 pmSeattle/Tacoma Intl

$852

Find similar

Air Canada flights from Seattle to South Korea

Our best Air Canada deals on Seattle to South Korea 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

Jan 19

SEA5:50 amSeattle/Tacoma Intl

18h 20m

1 stop

ICN5:10 pmIncheon Intl

Jan 26

ICN6:55 pmIncheon Intl

20h 11m

1 stop

SEA10:06 pmSeattle/Tacoma Intl

$721

Find similar

Air Canada

Dec 1

SEA5:45 amSeattle/Tacoma Intl

18h 25m

1 stop

ICN5:10 pmIncheon Intl

Dec 8

ICN6:55 pmIncheon Intl

17h 21m

1 stop

SEA7:16 pmSeattle/Tacoma Intl

$762

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/27

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Sat 5/2

9:10 pm-2:09 pm

2 stops32h 59m

$574

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 4/22

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Thu 4/30

9:10 pm-2:09 pm

2 stops32h 59m

$591

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/27

2:40 pm-6:35 pm

Nonstop11h 55m

Incheon Intl

Thu 5/14

9:10 pm-2:09 pm

2 stops32h 59m

$592

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Mon 5/11

1:10 am-11:15 am

1 stop18h 05m

Busan Gimhae

Tue 5/26

12:15 pm-7:30 pm

1 stop23h 15m

$807

SeattleJeju City

SEA - CJU

SEACJU

Seattle/Tacoma Intl

Tue 4/7

11:50 am-6:20 am

1 stop26h 30m

Jeju City

Wed 4/29

7:55 am-10:10 am

1 stop18h 15m

$870

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Tue 5/12

11:50 am-1:35 pm

1 stop33h 45m

Busan Gimhae

Tue 5/26

7:45 am-10:10 am

1 stop18h 25m

$870

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Sun 3/1

11:00 am-10:50 am

1 stop30h 50m

Busan Gimhae

Sat 3/21

12:00 pm-10:00 am

1 stop14h 00m

$957

SeattleDaegu

SEA - TAE

SEATAE

Seattle/Tacoma Intl

Sat 1/17

11:25 am-7:45 pm

1 stop15h 20m

Daegu

Wed 1/21

7:40 am-1:20 pm

1 stop22h 40m

$977

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Sat 3/14

12:35 pm-8:45 pm

1 stop16h 10m

Busan Gimhae

Sun 3/22

10:25 am-10:00 am

1 stop15h 35m

$983

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Thu 1/8

7:15 am-8:10 am

2 stops31h 55m

Busan Gimhae

Thu 1/15

4:10 pm-9:00 am

1 stop33h 50m

$984

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

Delays

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 November, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $900.

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 $814. 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 $1,001.

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 $715 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 $1,099 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 $969 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?

You could potentially save up to 3% on your flight if you consider stops on a Seattle to South Korea flight.

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	$389
Fastest flight time	11h 45m
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 $389. The best round-trip flight deal from Seattle to South Korea found on momondo in the last 72 hours is $690.

The fastest flight from Seattle to South Korea takes 11h 45m

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 November 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 (28.22% of total bookings). The next most popular plane models are Boeing 787-10 Dreamliner (22.06%), Airbus A350-900 (15.24%), and Boeing 787 Dreamliner (9.26%).

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 8,004 reviews	Search Delta flights
Alaska Airlines	PriceFrom $190	Free Cancellation	Rating 8.0 11,363 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $282	Free Cancellation	Rating 7.4 9,050 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $282	Free Cancellation	Rating 7.8 2,815 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $630	Free Cancellation	Rating 7.1 10,481 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $801	Free Cancellation	Rating 8.2 490 reviews	Search Asiana Airlines flights
China Airlines	PriceFrom $835	Free Cancellation	Rating 8.3 782 reviews	Search China Airlines flights
Korean Air	PriceFrom $850	Free Cancellation	Rating 8.4 1,172 reviews	Search Korean Air flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,284 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $1,007	Free Cancellation	Rating 7.3 4,063 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 $540

Flights to Jeju Cityfrom $690

Flights to Busanfrom $690

Flights to Daegufrom $977

Flights to Gwangjufrom $1,143

Flights to Yeosu

Flights to Ulsanfrom $2,240

Flights to Jinjufrom $1,501

Flights to Muan

Cheap flights from Seattle to South Korea from $182

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 4/27. 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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Asiana Airlines flights from Seattle to South Korea

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

Air Canada flights from Seattle to South Korea

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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 November, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $900.

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?

You could potentially save up to 3% on your flight if you consider stops on a Seattle to South Korea flight.

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

Delta, Alaska Airlines, and Japan Airlines are the most popular carriers operating from Seattle/Tacoma Intl to South Korea

What airlines fly to South Korea?

How often are flights from Seattle to South Korea delayed?

Historically, on average around 33% of flights between Seattle and South Korea have experienced a delay on any given week. The average delay length over the past 12 months has been 185 minutes.

What is the most punctual flight time for Seattle to South Korea flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Seattle to South Korea flights?

According to our data, Delta have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

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 November 2025. The most frequent departure time is 11:00AM, with 47% of daily flights leaving in the afternoon.

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

As of November 2025, there are 59 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Wed, 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