Which airline has the best punctuality record on $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] 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 is the most punctual flight time for $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] 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 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 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 often are flights $[0, preposition:'from ']$[0, article:'from ']$[0, place:'from'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] delayed?

Historically, on average around 33% of flights between $[0, place:'genitive'] and $[1, place:'genitive'] have experienced a delay on any given week. The average delay length over the past 12 months has been 185 minutes.

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

The number of flights available between Seattle and South Korea is 7 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 52 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Wed, with 19% of flights taking off on this day.

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

Japan Airlines, Delta, and Asiana 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 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.

$340 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.

10:05 am - 10:50 pmSEA-ICN

19h 45m2 stops

5:55 pm - 7:16 pmICN-SEA

18h 21m1 stop

$655Multiple Airlines

Find Deal

Tue, Dec 2 - Fri, Dec 5

5:50 am - 4:00 pmSEA-ICN

17h 10m1 stop

5:55 pm - 7:16 pmICN-SEA

18h 21m1 stop

$665Air Canada

Find Deal

Thu, Jan 8 - Sun, Feb 15

10:05 am - 10:25 pmSEA-ICN

19h 20m2 stops

5:55 pm - 2:31 pmICN-SEA

13h 36m1 stop

$677Multiple Airlines

Find Deal

Thu, Jan 8 - Sun, Feb 15

12:10 pm - 10:05 pmSEA-GMP

16h 55m1 stop

12:05 pm - 9:03 amGMP-SEA

37h 58m2 stops

$871Japan Airlines

Find Deal

Mon, Dec 1 - Wed, Dec 10

8:45 am - 10:05 pmSEA-GMP

20h 20m2 stops

8:00 am - 9:03 amGMP-SEA

42h 03m2 stops

$872Japan Airlines

Find Deal

Wed, Dec 3 - Fri, Dec 12

12:10 am - 3:15 pmSEA-PUS

22h 05m1 stop

9:00 am - 1:55 pmPUS-SEA

21h 55m1 stop

$950Asiana Airlines

Find Deal

Sat, Feb 7 - Sat, Feb 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

11:25 am - 7:45 pmSEA-TAE

15h 20m1 stop

7:40 am - 1:20 pmTAE-SEA

22h 40m1 stop

$978Delta

Find Deal

Sat, Jan 17 - Wed, Jan 21

6:00 am - 7:45 pmSEA-TAE

20h 45m2 stops

7:40 am - 9:00 amTAE-SEA

18h 20m1 stop

$986Korean Air

Find Deal

Sat, Jan 17 - Wed, Jan 21

5:40 pm - 7:45 pmSEA-TAE

33h 05m2 stops

7:40 am - 1:20 pmTAE-SEA

22h 40m1 stop

$987Korean Air

Find Deal

Sat, Jan 17 - Wed, Jan 21

Air Canada flights from Seattle to South Korea

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

Air Canada

Jan 8

SEA5:50 amSeattle/Tacoma Intl

17h 10m

1 stop

ICN4:00 pmIncheon Intl

Feb 15

ICN5:55 pmIncheon Intl

18h 21m

1 stop

SEA7:16 pmSeattle/Tacoma Intl

$665

Find similar

Air Canada

Nov 29

SEA5:50 amSeattle/Tacoma Intl

18h 20m

1 stop

ICN5:10 pmIncheon Intl

Dec 18

ICN6:55 pmIncheon Intl

17h 21m

1 stop

SEA7:16 pmSeattle/Tacoma Intl

$691

Find similar

Air Canada

Dec 1

SEA5:45 amSeattle/Tacoma Intl

18h 25m

1 stop

ICN5:10 pmIncheon Intl

Dec 14

ICN5:55 pmIncheon Intl

18h 21m

1 stop

SEA7:16 pmSeattle/Tacoma Intl

$726

Find similar

Asiana Airlines flights from Seattle to South Korea

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

Asiana Airlines

Nov 24

SEA12:10 amSeattle/Tacoma Intl

12h 10m

ICN5:20 amIncheon Intl

Dec 4

ICN9:00 pmIncheon Intl

9h 55m

SEA1:55 pmSeattle/Tacoma Intl

$850

Find similar

Asiana Airlines

Nov 24

SEA12:10 amSeattle/Tacoma Intl

12h 10m

ICN5:20 amIncheon Intl

Dec 9

ICN9:00 pmIncheon Intl

9h 55m

SEA1:55 pmSeattle/Tacoma Intl

$852

Find similar

Asiana Airlines

Nov 27

SEA12:10 amSeattle/Tacoma Intl

12h 10m

ICN5:20 amIncheon Intl

Dec 18

ICN9:00 pmIncheon Intl

9h 55m

SEA1:55 pmSeattle/Tacoma Intl

$853

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 12/2

10:05 am-10:50 pm

2 stops19h 45m

Incheon Intl

Fri 12/5

5:55 pm-7:16 pm

1 stop18h 21m

$655

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 1/8

5:50 am-4:00 pm

1 stop17h 10m

Incheon Intl

Sun 2/15

5:55 pm-7:16 pm

1 stop18h 21m

$665

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 1/8

10:05 am-10:25 pm

2 stops19h 20m

Incheon Intl

Sun 2/15

5:55 pm-2:31 pm

1 stop13h 36m

$677

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Mon 12/1

12:10 pm-10:05 pm

1 stop16h 55m

Seoul Gimpo Intl

Wed 12/10

12:05 pm-9:03 am

2 stops37h 58m

$871

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Wed 12/3

8:45 am-10:05 pm

2 stops20h 20m

Seoul Gimpo Intl

Fri 12/12

8:00 am-9:03 am

2 stops42h 03m

$872

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

Sat 2/7

12:10 am-3:15 pm

1 stop22h 05m

Busan Gimhae

Sat 2/21

9:00 am-1:55 pm

1 stop21h 55m

$950

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

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

$978

SeattleDaegu

SEA - TAE

SEATAE

Seattle/Tacoma Intl

Sat 1/17

6:00 am-7:45 pm

2 stops20h 45m

Daegu

Wed 1/21

7:40 am-9:00 am

1 stop18h 20m

$986

SeattleDaegu

SEA - TAE

SEATAE

Seattle/Tacoma Intl

Sat 1/17

5:40 pm-7:45 pm

2 stops33h 05m

Daegu

Wed 1/21

7:40 am-1:20 pm

1 stop22h 40m

$987

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 $829. 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 $1,015.

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 $1,112 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 $929 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 1% 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	$379
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 $379. The best round-trip flight deal from Seattle to South Korea found on momondo in the last 72 hours is $681.

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 (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%).

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 8,002 reviews	Search Delta flights
Alaska Airlines	PriceFrom $190	Free Cancellation	Rating 8.0 11,318 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $282	Free Cancellation	Rating 7.4 9,019 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $282	Free Cancellation	Rating 7.8 2,809 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $709	Free Cancellation	Rating 7.1 10,462 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $802	Free Cancellation	Rating 8.2 487 reviews	Search Asiana Airlines flights
China Airlines	PriceFrom $835	Free Cancellation	Rating 8.3 781 reviews	Search China Airlines flights
Korean Air	PriceFrom $850	Free Cancellation	Rating 8.4 1,167 reviews	Search Korean Air flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,277 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $1,007	Free Cancellation	Rating 7.3 4,047 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 $549

Flights to Jeju Cityfrom $845

Flights to Busanfrom $697

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 $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 South Korea departing on 2/5. 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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Filter for what you want

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Cheap round-trip flights

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Air Canada flights from Seattle to South Korea

Our best Air Canada 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 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 1% 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?

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

What airlines fly to South Korea?

How often are flights $[0, preposition:'from ']$[0, article:'from ']$[0, place:'from'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] delayed?

Historically, on average around 33% of flights between $[0, place:'genitive'] and $[1, place:'genitive'] 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 $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] 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.

Which airline has the best punctuality record on $[0,article:'genitive ']$[0,place:'genitive'] $[1, preposition:'to ']$[1, article:'to ']$[1, place:'to'] 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 7 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 52 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Wed, with 19% 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