How many flights depart from State of Washington to South Korea on average per day?

As of August 2025, there are 7 flights per day flying from State of Washington to South Korea. The most common time of day flights depart is 2:00PM, with 100% of flights taking off in the afternoon.

How long is the flight from State of Washington to South Korea?

The flight from State of Washington to South Korea depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Seattle (a popular airport in State of Washington) to Incheon Intl Airport (the most popular airport in South Korea), then the flight time is 11h 25m on average. If you fly from Pasco (another popular airport in State of Washington) to Incheon Intl Airport, then the average flight time is 17h 10m.

How many flights depart from State of Washington to South Korea on average per week?

54 flights are operational weekly from State of Washington to South Korea as of August 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

What is the cheapest airline that flies from Washington to South Korea?

WestJet, Hawaiian Airlines, and Asiana Airlines are the most popular carriers operating from Washington 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 State of Washington according to our data. Korean Air is the first choice among our users, with 42% 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 Washington to South Korea?

Prices for flights from Washington to South Korea were last updated today.

How many operators does momondo search for flights from Washington to South Korea?

There are 11 operators available for flights from Washington to South Korea as of August 2025.

How old do you have to be to fly from Washington to South Korea?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to South Korea.

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

The required travel and health documents for your South Korea trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at South Korea. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$351 Cheap Flights from Washington to South Korea in 2025

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Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

5:08 pm - 6:45 pmPDX-ICN

33h 37m2 stops

6:20 pm - 9:47 amICN-PDX

31h 27m1 stop

$796

Find Deal

mié., oct. 1 - mié., oct. 8

1:45 pm - 6:45 pmPDX-ICN

37h 00m1 stop

6:20 pm - 9:47 amICN-PDX

31h 27m1 stop

$806

Find Deal

vie., oct. 3 - lun., oct. 20

12:45 pm - 5:00 amSEA-ICN

24h 15m1 stop

2:30 pm - 4:59 pmICN-SEA

18h 29m1 stop

$811Korean Air

Find Deal

sáb., sep. 13 - dom., sep. 28

7:15 pm - 4:05 pmSEA-ICN

28h 50m1 stop

5:45 pm - 10:16 pmICN-SEA

20h 31m1 stop

$812Air Canada

Find Deal

mar., sep. 16 - mar., sep. 30

7:15 pm - 4:10 pmSEA-ICN

28h 55m1 stop

6:55 pm - 2:26 pmICN-SEA

12h 31m1 stop

$813Air Canada

Find Deal

sáb., oct. 25 - dom., nov. 2

8:08 am - 5:20 pmSEA-ICN

17h 12m1 stop

4:40 pm - 10:40 amICN-SEA

10h 00mnonstop

$815Korean Air

Find Deal

mié., sep. 17 - mar., sep. 23

2:15 pm - 5:00 pmSEA-PUS

34h 45m2 stops

7:30 am - 12:30 pmPUS-SEA

21h 00m2 stops

$819Asiana Airlines

Find Deal

lun., sep. 15 - lun., sep. 22

2:15 pm - 5:55 pmSEA-ICN

11h 40mnonstop

6:20 pm - 12:30 pmICN-SEA

10h 10mnonstop

$821Asiana Airlines

Find Deal

mié., oct. 1 - mié., oct. 8

1:10 am - 7:35 pmSEA-ICN

26h 25m1 stop

12:30 pm - 6:10 pmICN-SEA

22h 40m1 stop

$833China Airlines

Find Deal

dom., oct. 19 - lun., nov. 10

1:40 am - 11:15 amSEA-PUS

17h 35m1 stop

12:15 pm - 7:20 pmPUS-SEA

23h 05m1 stop

$1,102China Airlines

Find Deal

dom., sep. 14 - lun., sep. 22

Korean Air flights from State of Washington to South Korea

Our best Korean Air deals on State of Washington to South Korea flight tickets

Korean Air

Sep 13

SEA12:45 pmSeattle/Tacoma Intl

24h 15m

1 stop

ICN5:00 amIncheon Intl

Sep 28

ICN2:30 pmIncheon Intl

18h 29m

1 stop

SEA4:59 pmSeattle/Tacoma Intl

$811

Find similar

Korean Air

Sep 17

SEA8:08 amSeattle/Tacoma Intl

17h 12m

1 stop

ICN5:20 pmIncheon Intl

Sep 23

ICN4:40 pmIncheon Intl

10h 00m

SEA10:40 amSeattle/Tacoma Intl

$815

Find similar

Korean Air

Sep 17

SEA12:50 pmSeattle/Tacoma Intl

11h 50m

ICN4:40 pmIncheon Intl

Sep 23

ICN4:40 pmIncheon Intl

10h 00m

SEA10:40 amSeattle/Tacoma Intl

$816

Find similar

China Airlines flights from State of Washington to South Korea

Our best China Airlines deals on State of Washington to South Korea flight tickets

China Airlines

Oct 19

SEA1:10 amSeattle/Tacoma Intl

26h 25m

1 stop

ICN7:35 pmIncheon Intl

Nov 10

ICN12:30 pmIncheon Intl

22h 40m

1 stop

SEA6:10 pmSeattle/Tacoma Intl

$833

Find similar

China Airlines

Aug 24

SEA1:40 amSeattle/Tacoma Intl

25h 55m

1 stop

ICN7:35 pmIncheon Intl

Sep 8

ICN12:35 pmIncheon Intl

23h 10m

1 stop

SEA7:45 pmSeattle/Tacoma Intl

$926

Find similar

China Airlines

Aug 23

SEA1:40 amSeattle/Tacoma Intl

25h 55m

1 stop

ICN7:35 pmIncheon Intl

Sep 9

ICN8:35 pmIncheon Intl

15h 10m

1 stop

SEA7:45 pmSeattle/Tacoma Intl

$984

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

PortlandIncheon

PDX - ICN

PDXICN

Portland

mié. 10/1

5:08 pm-6:45 pm

2 stops33h 37m

Incheon Intl

mié. 10/8

6:20 pm-9:47 am

1 stop31h 27m

$796

PortlandIncheon

PDX - ICN

PDXICN

Portland

vie. 10/3

1:45 pm-6:45 pm

1 stop37h 00m

Incheon Intl

lun. 10/20

6:20 pm-9:47 am

1 stop31h 27m

$806

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

sáb. 9/13

12:45 pm-5:00 am

1 stop24h 15m

Incheon Intl

dom. 9/28

2:30 pm-4:59 pm

1 stop18h 29m

$811

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

mar. 9/16

7:15 pm-4:05 pm

1 stop28h 50m

Incheon Intl

mar. 9/30

5:45 pm-10:16 pm

1 stop20h 31m

$812

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

sáb. 10/25

7:15 pm-4:10 pm

1 stop28h 55m

Incheon Intl

dom. 11/2

6:55 pm-2:26 pm

1 stop12h 31m

$813

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

mié. 9/17

8:08 am-5:20 pm

1 stop17h 12m

Incheon Intl

mar. 9/23

4:40 pm-10:40 am

Nonstop10h 00m

$815

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

lun. 9/15

2:15 pm-5:00 pm

2 stops34h 45m

Busan Gimhae

lun. 9/22

7:30 am-12:30 pm

2 stops21h 00m

$819

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

mié. 10/1

2:15 pm-5:55 pm

Nonstop11h 40m

Incheon Intl

mié. 10/8

6:20 pm-12:30 pm

Nonstop10h 10m

$821

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

dom. 10/19

1:10 am-7:35 pm

1 stop26h 25m

Incheon Intl

lun. 11/10

12:30 pm-6:10 pm

1 stop22h 40m

$833

SeattleBusan

SEA - PUS

SEAPUS

Seattle/Tacoma Intl

dom. 9/14

1:40 am-11:15 am

1 stop17h 35m

Busan Gimhae

lun. 9/22

12:15 pm-7:20 pm

1 stop23h 05m

$1,102

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 State of Washington 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 January is also cheap. Prices for this month can be found on momondo for an average of $971.

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 State of Washington is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $863. 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 State of Washington 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 State of Washington in the evening is the least expensive time of day to depart. momondo users have found prices as low as $736 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 State of Washington in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Washington to South Korea flight route?

Fly from Seattle/Tacoma Intl to Incheon Intl for the best Washington - 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 State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $1,175 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from State of Washington for as low as $992 on momondo.

What cabin class options are available on Washington to South Korea flights?

There are 3 cabin classes available to choose from on Washington 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 State of Washington to South Korea flights?

No. A direct flight is the cheapest option for a flight between State of Washington to South Korea.

Cheap State of Washington to South Korea flight deals and tips

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

Best Price Found	$351
Fastest flight time	11h 20m
Direct flights	Every day
Airports in South Korea	3 airports

The best one-way flight to South Korea from State of Washington in the past 72 hours is $351. The best round-trip flight deal from State of Washington to South Korea found on momondo in the last 72 hours is $796.

The fastest flight from State of Washington to South Korea takes 11h 20m

Direct flights go from State of Washington to South Korea every day.

There are 3 airports near South Korea: Incheon Intl (ICN), Seoul Gimpo Intl (GMP), Busan Gimhae (PUS)

Search flight deals

When did momondo last update prices for flights from Washington to South Korea?
Prices for flights from Washington to South Korea were last updated today.
How many operators does momondo search for flights from Washington to South Korea?
There are 11 operators available for flights from Washington to South Korea as of August 2025.
How old do you have to be to fly from Washington to South Korea?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to South Korea.
What documentation or ID do you need to fly to South Korea?
The required travel and health documents for your South Korea trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at South Korea. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from State of Washington to South Korea?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to South Korea is Boeing 787-10 Dreamliner, representing 24.88% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 21.67%, Airbus A350-900 at 19.02%, and Boeing 777-200LR at 14.67%.

Best airlines flying from State of Washington to South Korea

Compare and see reviews for airlines that fly from State of Washington to South Korea with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $167	Free Cancellation	Rating 8.0 7,981 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 8,925 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $763	Free Cancellation	Rating 7.8 2,665 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $771	Free Cancellation	Rating 7.1 9,992 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $842	Free Cancellation	Rating 8.2 476 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $884	Free Cancellation	Rating 8.4 1,131 reviews	Search Korean Air flights
China Airlines	PriceFrom $886	Free Cancellation	Rating 8.3 764 reviews	Search China Airlines flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,232 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $1,007	Free Cancellation	Rating 7.3 3,945 reviews	Search Turkish Airlines flights

Why use momondo?

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

Finding the right flight to South Korea from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to South Korea quick and easy, saving you time and money.

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

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

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

momondo provides multiple filters to help you find the best flight to South Korea from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Washington to South Korea flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your South Korea trip

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Popular cities in South Korea

Flights to Seoulfrom $615

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Flights to Busanfrom $758

Flights to Gwangjufrom $837

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Cheap flights from Washington to South Korea from $351

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington 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.

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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 Washington to South Korea

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Korean Air flights from State of Washington to South Korea

Our best Korean Air deals on State of Washington to South Korea flight tickets

China Airlines flights from State of Washington to South Korea

Our best China Airlines deals on State of Washington to South Korea flight tickets

momondo Fare Finder

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

See travel insights to South Korea from

How to get the cheapest flight ticket from State of Washington 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 January is also cheap. Prices for this month can be found on momondo for an average of $971.

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 Washington to South Korea flight route?

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

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

What cabin class options are available on Washington to South Korea flights?

There are 3 cabin classes available to choose from on Washington 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 State of Washington to South Korea flights?

No. A direct flight is the cheapest option for a flight between State of Washington to South Korea.

What is the cheapest airline that flies from Washington to South Korea?

WestJet, Hawaiian Airlines, and Asiana Airlines are the most popular carriers operating from Washington to South Korea

What airlines fly to South Korea?

How many flights depart from State of Washington to South Korea on average per day?

As of August 2025, there are 7 flights per day flying from State of Washington to South Korea. The most common time of day flights depart is 2:00PM, with 100% of flights taking off in the afternoon.

How many flights depart from State of Washington to South Korea on average per week?

54 flights are operational weekly from State of Washington to South Korea as of August 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

How long is the flight from State of Washington to South Korea?

Cheap State of Washington to South Korea flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in South Korea

When did momondo last update prices for flights from Washington to South Korea?

How many operators does momondo search for flights from Washington to South Korea?

How old do you have to be to fly from Washington to South Korea?

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

What is the most popular plane model from State of Washington to South Korea?

Best airlines flying from State of Washington to South Korea

Compare and see reviews for airlines that fly from State of Washington to South Korea with momondo

Why use momondo?

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

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

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

I’m not ready to book a flight from Washington 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