How often are flights from Seattle to South Korea delayed?

Historically, on average around 32% 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.

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

As of December 2025, there are 39 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Mon, with 21% of flights taking off on this day.

What airlines fly to South Korea?

Alaska Airlines, Korean Air and Asiana Airlines are the top three most popular airlines that fly to South Korea from Seattle according to our data. Alaska Airlines is the first choice among our users, with 53% 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 day?

The number of flights available between Seattle and South Korea is 5 per day as of December 2025. The most frequent departure time is 11:00AM, with 49% of daily flights leaving at noon.

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 12% of their flights experiencing any sort of delay.

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

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

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.

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 December 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.

$339 Cheap Flights from Seattle to South Korea in 2025/26

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:05 am - 8:35 pm

SEA

ICN

41h 30m2 stops

9:15 pm - 9:05 am

ICN

SEA

27h 50m2 stops

$669Hainan Airlines

jue., mar. 19 - mié., abr. 1

11:05 am - 8:35 pm

SEA

ICN

41h 30m2 stops

9:15 pm - 9:05 am

ICN

SEA

27h 50m2 stops

$673Hainan Airlines

jue., mar. 19 - mié., abr. 1

9:28 am - 4:20 pm

SEA

ICN

37h 52m1 stop

9:20 pm - 10:25 am

ICN

SEA

29h 05m2 stops

$699Multiple Airlines

jue., mar. 5 - jue., mar. 12

10:03 am - 5:10 am

SEA

ICN

26h 07m1 stop

9:20 pm - 10:25 am

ICN

SEA

29h 05m2 stops

$727Multiple Airlines

dom., mar. 1 - dom., mar. 8

8:00 pm - 4:00 pm

SEA

ICN

27h 00m1 stop

5:55 pm - 10:06 pm

ICN

SEA

21h 11m1 stop

$756Air Canada

vie., feb. 13 - vie., feb. 20

11:50 pm - 5:40 pm

SEA

PUS

25h 50m1 stop

2:55 pm - 7:10 pm

PUS

SEA

20h 15m1 stop

$911EVA Air

mar., mar. 17 - mié., mar. 25

11:30 pm - 5:40 pm

SEA

PUS

25h 10m1 stop

6:55 pm - 6:10 pm

PUS

SEA

16h 15m1 stop

$934EVA Air

sáb., ene. 10 - dom., ene. 25

11:00 am - 10:50 am

SEA

PUS

30h 50m1 stop

7:00 am - 9:00 am

PUS

SEA

19h 00m1 stop

$971Korean Air

sáb., feb. 14 - sáb., feb. 21

12:50 pm - 9:30 am

SEA

PUS

28h 40m1 stop

4:30 pm - 10:50 am

PUS

SEA

34h 20m1 stop

$974Korean Air

mié., abr. 1 - mar., jun. 23

12:10 am - 1:35 pm

SEA

PUS

20h 25m1 stop

4:00 pm - 1:55 pm

PUS

SEA

14h 55m1 stop

$977Asiana Airlines

vie., ene. 16 - lun., ene. 19

Air Canada flights from Seattle to South Korea

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

Air Canada

Feb 14

SEA5:50 amSeattle/Tacoma Intl

17h 10m

1 stop

ICN4:00 pmIncheon Intl

Feb 21

ICN6:55 pmIncheon Intl

20h 11m

1 stop

SEA10:06 pmSeattle/Tacoma Intl

$651

Find similar

Air Canada

Feb 13

SEA8:00 pmSeattle/Tacoma Intl

27h 00m

1 stop

ICN4:00 pmIncheon Intl

Feb 20

ICN5:55 pmIncheon Intl

21h 11m

1 stop

SEA10:06 pmSeattle/Tacoma Intl

$756

Find similar

Air Canada

Mar 23

SEA10:05 amSeattle/Tacoma Intl

14h 10m

1 stop

ICN4:15 pmIncheon Intl

Apr 13

ICN5:45 pmIncheon Intl

17h 33m

1 stop

SEA7:18 pmSeattle/Tacoma Intl

$771

Find similar

Hainan Airlines flights from Seattle to South Korea

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

Hainan Airlines

Mar 19

SEA11:05 amSeattle/Tacoma Intl

41h 30m

2 stops

ICN8:35 pmIncheon Intl

Apr 1

ICN9:15 pmIncheon Intl

27h 50m

2 stops

SEA9:05 amSeattle/Tacoma Intl

$669

Find similar

Hainan Airlines

Mar 19

SEA11:05 amSeattle/Tacoma Intl

41h 30m

2 stops

ICN8:35 pmIncheon Intl

Apr 1

ICN9:15 pmIncheon Intl

27h 50m

2 stops

SEA9:05 amSeattle/Tacoma Intl

$673

Find similar

Hainan Airlines

Mar 26

SEA11:05 amSeattle/Tacoma Intl

41h 30m

2 stops

ICN8:35 pmIncheon Intl

Apr 15

ICN9:15 pmIncheon Intl

27h 50m

2 stops

SEA9:05 amSeattle/Tacoma Intl

$739

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

jue. 3/19

11:05 am-8:35 pm

2 stops41h 30m

Incheon Intl

mié. 4/1

9:15 pm-9:05 am

2 stops27h 50m

$669

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

jue. 3/19

11:05 am-8:35 pm

2 stops41h 30m

Incheon Intl

mié. 4/1

9:15 pm-9:05 am

2 stops27h 50m

$673

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

jue. 3/5

9:28 am-4:20 pm

1 stop37h 52m

Incheon Intl

jue. 3/12

9:20 pm-10:25 am

2 stops29h 05m

$699

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

dom. 3/1

10:03 am-5:10 am

1 stop26h 07m

Incheon Intl

dom. 3/8

9:20 pm-10:25 am

2 stops29h 05m

$727

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

vie. 2/13

8:00 pm-4:00 pm

1 stop27h 00m

Incheon Intl

vie. 2/20

5:55 pm-10:06 pm

1 stop21h 11m

$756

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

mar. 3/17

11:50 pm-5:40 pm

1 stop25h 50m

Busan Gimhae

mié. 3/25

2:55 pm-7:10 pm

1 stop20h 15m

$911

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

sáb. 1/10

11:30 pm-5:40 pm

1 stop25h 10m

Busan Gimhae

dom. 1/25

6:55 pm-6:10 pm

1 stop16h 15m

$934

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

sáb. 2/14

11:00 am-10:50 am

1 stop30h 50m

Busan Gimhae

sáb. 2/21

7:00 am-9:00 am

1 stop19h 00m

$971

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

mié. 4/1

12:50 pm-9:30 am

1 stop28h 40m

Busan Gimhae

mar. 6/23

4:30 pm-10:50 am

1 stop34h 20m

$974

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

vie. 1/16

12:10 am-1:35 pm

1 stop20h 25m

Busan Gimhae

lun. 1/19

4:00 pm-1:55 pm

1 stop14h 55m

$977

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 February is also cheap. Prices for this month can be found on momondo for an average of $879.

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as $713. 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 $957.

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 $711 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 $946 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 $593 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	$361
Fastest flight time	11h 20m
Direct flights	Every day
Airports in South Korea	24 airports

The best one-way flight to South Korea from Seattle in the past 72 hours is $361. The best round-trip flight deal from Seattle to South Korea found on momondo in the last 72 hours is $337.

The fastest flight from Seattle to South Korea takes 11h 20m

Direct flights go from Seattle to South Korea every day.

There are 24 airports in South Korea. From Seattle there are direct flights to 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 December 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 (39.42% of total bookings). The next most popular plane models are Airbus A350-900 (20.80%), Boeing 777-200/200ER (13.15%), and Boeing 787-9 Dreamliner (12.44%).

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 $183	Free Cancellation	Rating 7.9 8,013 reviews	Search Delta flights
United Airlines	PriceFrom $282	Free Cancellation	Rating 7.4 9,124 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $282	Free Cancellation	Rating 7.8 2,821 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $335	Free Cancellation	Rating 8.0 11,584 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $611	Free Cancellation	Rating 7.1 10,571 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $797	Free Cancellation	Rating 8.2 502 reviews	Search Asiana Airlines flights
China Airlines	PriceFrom $835	Free Cancellation	Rating 8.2 797 reviews	Search China Airlines flights
Korean Air	PriceFrom $847	Free Cancellation	Rating 8.4 1,183 reviews	Search Korean Air flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,304 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $995	Free Cancellation	Rating 7.3 4,133 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

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Flights to Ulsanfrom $1,297

Flights to Jinjufrom $1,747

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Cheap flights from Seattle to South Korea from $339

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 3/19. 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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Air Canada flights from Seattle to South Korea

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

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Our best Hainan Airlines 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

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 February is also cheap. Prices for this month can be found on momondo for an average of $879.

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?

Hainan Airlines, Japan Airlines, and Delta 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 32% 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 12% 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 5 per day as of December 2025. The most frequent departure time is 11:00AM, with 49% of daily flights leaving at noon.

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

As of December 2025, there are 39 flights per week flying from Seattle to South Korea. The most common day of the week flights depart is Mon, 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