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

The number of flights available between Seoul and State of Washington is 52 per week as of December 2025. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

What is the cheapest airline that flies from Seoul to Washington?

Philippine Airlines, China Eastern, and Japan Airlines are the most popular carriers operating from Seoul to Washington

What airlines fly to State of Washington?

Korean Air, Asiana Airlines and Alaska Airlines are the top three most popular airlines that fly to State of Washington from Seoul 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 State of Washington. Keep in mind that there are 6 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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

7 flights are operational daily from Seoul to State of Washington as of December 2025. The most popular departure time for this route is 8:00PM, with 74% of flights per day taking off in the evening.

How long is the flight from Seoul to State of Washington?

If you’re flying from a popular airport in Seoul, such as Incheon or Seoul, and flying into State of Washington, then you can expect flight times to average 9h 50m and 18h 30m, respectively.

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

Prices for flights from Seoul to Washington were last updated today.

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

There are 6 operators available for flights from Seoul to Washington as of December 2025.

How old do you have to be to fly from Seoul to Washington?

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 Seoul to Washington.

What documentation or ID do you need to fly to Washington?

The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$335 Cheap Flights from Seoul to Washington in 2025/26

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Cheap round-trip flights

Enter your travel dates to find the best prices.

4:10 pm - 9:00 am

ICN

SEA

9h 50mnonstop

11:25 am - 4:30 pm

SEA

ICN

12h 05mnonstop

$434Korean Air

Mon, Jan 19 - Mon, Feb 16

5:55 pm - 9:31 am

ICN

SEA

32h 36m1 stop

3:40 pm - 5:10 pm

SEA

ICN

32h 30m1 stop

$527Air Canada

Fri, Feb 6 - Sat, Feb 21

6:55 pm - 2:31 pm

ICN

SEA

12h 36m1 stop

10:05 am - 5:10 pm

SEA

ICN

14h 05m1 stop

$528Air Canada

Sat, Feb 7 - Sun, Feb 22

12:45 pm - 12:59 am

ICN

SEA

29h 14m1 stop

1:35 pm - 5:40 am

SEA

ICN

23h 05m1 stop

$559United Airlines

Wed, Dec 24 - Mon, Jan 5

6:00 pm - 11:16 pm

ICN

SEA

22h 16m2 stops

12:25 pm - 5:40 am

SEA

ICN

24h 15m2 stops

$560United Airlines

Fri, Jan 30 - Sat, Jan 31

8:35 pm - 5:59 pm

ICN

PDX

14h 24m1 stop

7:38 pm - 6:35 pm

PDX

ICN

29h 57m1 stop

$599Hawaiian Airlines

Sun, Feb 1 - Fri, Feb 6

8:05 pm - 9:59 pm

ICN

PDX

18h 54m1 stop

7:10 am - 4:30 pm

PDX

ICN

16h 20m1 stop

$600Delta

Tue, Dec 23 - Tue, Jan 13

7:20 pm - 1:00 pm

ICN

GEG

33h 40m1 stop

6:10 am - 4:30 pm

GEG

ICN

18h 20m1 stop

$600Delta

Tue, Apr 7 - Tue, Apr 21

8:35 pm - 12:12 am

ICN

PDX

20h 37m1 stop

6:14 am - 6:35 pm

PDX

ICN

19h 21m1 stop

$615Alaska Airlines

Sun, Dec 21 - Sun, Dec 28

8:35 pm - 12:12 am

ICN

PDX

20h 37m1 stop

6:14 am - 6:35 pm

PDX

ICN

19h 21m1 stop

$618Alaska Airlines

Sun, Dec 21 - Sun, Dec 28

ANA flights from Seoul to State of Washington

Our best ANA deals on Seoul to State of Washington flight tickets

ANA

Jun 8

GMP12:40 pmSeoul Gimpo Intl

21h 50m

2 stops

SEA6:30 pmSeattle/Tacoma Intl

Jun 15

SEA4:30 pmSeattle/Tacoma Intl

26h 35m

1 stop

GMP11:05 amSeoul Gimpo Intl

$839

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ANA

Dec 16

GMP12:25 pmSeoul Gimpo Intl

17h 55m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

Jan 5

SEA3:45 pmSeattle/Tacoma Intl

26h 35m

1 stop

GMP11:20 amSeoul Gimpo Intl

$897

Find similar

ANA

Dec 16

GMP12:25 pmSeoul Gimpo Intl

25h 35m

2 stops

SEA9:00 pmSeattle/Tacoma Intl

Jan 5

SEA7:12 pmSeattle/Tacoma Intl

23h 08m

2 stops

GMP11:20 amSeoul Gimpo Intl

$903

Find similar

Japan Airlines flights from Seoul to State of Washington

Our best Japan Airlines deals on Seoul to State of Washington flight tickets

Japan Airlines

Mar 3

GMP12:05 pmSeoul Gimpo Intl

14h 50m

1 stop

SEA9:55 amSeattle/Tacoma Intl

Mar 13

SEA1:30 pmSeattle/Tacoma Intl

29h 25m

1 stop

GMP10:55 amSeoul Gimpo Intl

$1,236

Find similar

Japan Airlines

Dec 23

GMP8:00 amSeoul Gimpo Intl

42h 17m

2 stops

SEA9:17 amSeattle/Tacoma Intl

Feb 4

SEA11:43 amSeattle/Tacoma Intl

41h 22m

2 stops

GMP10:05 pmSeoul Gimpo Intl

$1,380

Find similar

Japan Airlines

Feb 7

GMP12:05 pmSeoul Gimpo Intl

14h 50m

1 stop

SEA9:55 amSeattle/Tacoma Intl

Feb 14

SEA12:30 pmSeattle/Tacoma Intl

16h 35m

1 stop

GMP10:05 pmSeoul Gimpo Intl

$1,390

Find similar

Fly from

Fly to

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 1/19

4:10 pm-9:00 am

Nonstop9h 50m

Seattle/Tacoma Intl

Mon 2/16

11:25 am-4:30 pm

Nonstop12h 05m

$434

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 2/6

5:55 pm-9:31 am

1 stop32h 36m

Seattle/Tacoma Intl

Sat 2/21

3:40 pm-5:10 pm

1 stop32h 30m

$527

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 2/7

6:55 pm-2:31 pm

1 stop12h 36m

Seattle/Tacoma Intl

Sun 2/22

10:05 am-5:10 pm

1 stop14h 05m

$528

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 12/24

12:45 pm-12:59 am

1 stop29h 14m

Seattle/Tacoma Intl

Mon 1/5

1:35 pm-5:40 am

1 stop23h 05m

$559

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 1/30

6:00 pm-11:16 pm

2 stops22h 16m

Seattle/Tacoma Intl

Sat 1/31

12:25 pm-5:40 am

2 stops24h 15m

$560

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sun 2/1

8:35 pm-5:59 pm

1 stop14h 24m

Portland

Fri 2/6

7:38 pm-6:35 pm

1 stop29h 57m

$599

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 12/23

8:05 pm-9:59 pm

1 stop18h 54m

Portland

Tue 1/13

7:10 am-4:30 pm

1 stop16h 20m

$600

IncheonSpokane

ICN - GEG

ICNGEG

Incheon Intl

Tue 4/7

7:20 pm-1:00 pm

1 stop33h 40m

Spokane

Tue 4/21

6:10 am-4:30 pm

1 stop18h 20m

$600

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sun 12/21

8:35 pm-12:12 am

1 stop20h 37m

Portland

Sun 12/28

6:14 am-6:35 pm

1 stop19h 21m

$615

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sun 12/21

8:35 pm-12:12 am

1 stop20h 37m

Portland

Sun 12/28

6:14 am-6:35 pm

1 stop19h 21m

$618

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from Seoul to State of Washington

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 State of Washington?

The month of November is, on average, the cheapest month to fly to State of Washington from Seoul, with most prices found around $556. If you aren’t able to travel to State of Washington during the month of November, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $591.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Seoul to State of Washington is on a Thursday. Travelers who choose to depart for State of Washington on a Thursday will often find tickets for as low as $722. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Seoul to State of Washington for around $899.

What is the cheapest time of day to depart on your flight to State of Washington?

The cheapest time of day to fly to State of Washington is in the afternoon when flights can be purchased for as low as $766. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,059 on average. Flights to State of Washington from Seoul in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Seoul to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Seoul when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $701 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Seoul for as low as $551 on momondo.

What cabin class options are available on Seoul to Washington flights?

There are 4 cabin classes available to choose from on Seoul to Washington 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 Seoul to State of Washington flights?

You could potentially save up to 23% on your flight if you consider stops on a Seoul to State of Washington flight.

Cheap Seoul to State of Washington flight deals and tips

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

Best Price Found	$617
Fastest flight time	9h 50m
Direct flights	Every day
Airports in State of Washington	96 airports

The best one-way flight to State of Washington from Seoul in the past 72 hours is $617. The best round-trip flight deal from Seoul to State of Washington found on momondo in the last 72 hours is $567.

The fastest flight from Seoul to State of Washington takes 9h 50m

Direct flights go from Seoul to State of Washington every day.

There are 96 airports in State of Washington. From Seoul there are direct flights to Seattle/Tacoma Intl (SEA).

Search flight deals

When did momondo last update prices for flights from Seoul to Washington?
Prices for flights from Seoul to Washington were last updated today.
How many operators does momondo search for flights from Seoul to Washington?
There are 6 operators available for flights from Seoul to Washington as of December 2025.
How old do you have to be to fly from Seoul to Washington?
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 Seoul to Washington.
What documentation or ID do you need to fly to Washington?
The necessary travel and health documents for your Washington trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seoul to State of Washington?
Based on momondo bookings for flights between Seoul and State of Washington, the leading plane model is Boeing 787-9 Dreamliner, making up 33.71% of the total bookings. Other popular models include Airbus A350-900 with 19.66%, Boeing 787-10 Dreamliner with 18.63%, and Boeing 777-200/200ER with 7.19%.

Best airlines flying from Seoul to State of Washington

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

Airline	Rating	Free Cancellation	Price
Hawaiian Airlines	PriceFrom $352	Free Cancellation	Rating 7.8 2,817 reviews	Search Hawaiian Airlines flights
Asiana Airlines	PriceFrom $466	Free Cancellation	Rating 8.2 492 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $470	Free Cancellation	Rating 8.4 1,184 reviews	Search Korean Air flights
Air Canada	PriceFrom $472	Free Cancellation	Rating 7.1 10,517 reviews	Search Air Canada flights
Alaska Airlines	PriceFrom $476	Free Cancellation	Rating 8.0 11,432 reviews	Search Alaska Airlines flights
Delta	PriceFrom $606	Free Cancellation	Rating 7.9 8,007 reviews	Search Delta flights

Why use momondo?

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

It is quick and easy to find Seoul to Washington flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Washington that suits you.

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

Yes. momondo enables you to select and highlight flights to Washington from Seoul with this policy.

How can momondo help me find flights from Seoul to Washington?

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 Seoul to Washington.

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

If you are not ready to book a flight from Seoul to Washington now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Washington and let you know when they change.

An easier way to manage your State of Washington 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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Popular cities in Washington

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Cheap flights from Seoul to Washington from $322

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seoul to Washington departing on 2/8. 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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Find the cheapest flights from Seoul to Washington

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ANA flights from Seoul to State of Washington

Our best ANA deals on Seoul to State of Washington flight tickets

Japan Airlines flights from Seoul to State of Washington

Our best Japan Airlines deals on Seoul to State of Washington flight tickets

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How to get the cheapest flight ticket from Seoul to State of Washington

What is the cheapest month to fly to State of Washington?

What is the cheapest day to depart on your flight to State of Washington?

What is the cheapest time of day to depart on your flight to State of Washington?

What is the cheapest Seoul to Washington flight route?

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

How far in advance should I book a flight to State of Washington?

What cabin class options are available on Seoul to Washington flights?

There are 4 cabin classes available to choose from on Seoul to Washington 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 Seoul to State of Washington flights?

You could potentially save up to 23% on your flight if you consider stops on a Seoul to State of Washington flight.

What is the cheapest airline that flies from Seoul to Washington?

Philippine Airlines, China Eastern, and Japan Airlines are the most popular carriers operating from Seoul to Washington

What airlines fly to State of Washington?

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

7 flights are operational daily from Seoul to State of Washington as of December 2025. The most popular departure time for this route is 8:00PM, with 74% of flights per day taking off in the evening.

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

The number of flights available between Seoul and State of Washington is 52 per week as of December 2025. The most frequent departure day is Thu, with 19% of weekly flights leaving on this day.

How long is the flight from Seoul to State of Washington?

If you’re flying from a popular airport in Seoul, such as Incheon or Seoul, and flying into State of Washington, then you can expect flight times to average 9h 50m and 18h 30m, respectively.

Cheap Seoul to State of Washington flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

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

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

How old do you have to be to fly from Seoul to Washington?

What documentation or ID do you need to fly to Washington?

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

Best airlines flying from Seoul to State of Washington

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

Why use momondo?

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

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

How can momondo help me find flights from Seoul to Washington?

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

An easier way to manage your State of Washington 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 Washington

Popular cities in Washington

Popular flights according to clicks in the last 7 days on momondo