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

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

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 54 per week as of June 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.

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 June 2026. The most popular departure time for this route is 7:00PM, with 72% of flights per day taking off in the evening.

What airlines fly to State of Washington?

Asiana Airlines, Korean Air and Alaska Airlines are the top three most popular airlines that fly to State of Washington from Seoul according to our data. Asiana Airlines is the first choice among our users, with 39% 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 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 19h 32m, 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 June 2026.

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.

$422 Cheap Flights from Seoul to Washington in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seoul to Washington

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:20 am - 8:05 pm

ICN

SEA

28h 45m

1 stop

11:10 pm - 7:15 pm

SEA

ICN

28h 05m

1 stop

$781Philippine Airlines

Tue, Oct 6 - Tue, Oct 13

8:30 pm - 8:05 pm

ICN

SEA

39h 35m

1 stop

11:10 pm - 7:15 pm

SEA

ICN

28h 05m

1 stop

$782Philippine Airlines

Sat, Sep 12 - Sun, Sep 13

7:20 am - 8:05 pm

ICN

SEA

28h 45m

1 stop

11:10 pm - 7:15 pm

SEA

ICN

28h 05m

1 stop

$783Philippine Airlines

Sun, Jul 5 - Wed, Jul 8

8:30 pm - 8:05 pm

ICN

SEA

39h 35m

1 stop

11:10 pm - 7:15 pm

SEA

ICN

28h 05m

1 stop

$784Philippine Airlines

Tue, Sep 1 - Tue, Sep 22

8:00 pm - 9:35 am

ICN

PDX

30h 35m

2 stops

2:47 pm - 5:35 pm

PDX

ICN

33h 48m

2 stops

$1,024Alaska Airlines

Fri, Nov 6 - Tue, Nov 10

8:00 pm - 9:35 am

ICN

PDX

30h 35m

2 stops

2:47 pm - 5:35 pm

PDX

ICN

33h 48m

2 stops

$1,027Alaska Airlines

Fri, Nov 6 - Tue, Nov 10

6:55 pm - 6:31 pm

ICN

PDX

16h 36m

1 stop

7:10 pm - 5:10 pm

PDX

ICN

29h 00m

1 stop

$1,057Air Canada

Mon, Nov 16 - Wed, Dec 16

6:45 pm - 6:48 pm

ICN

GEG

17h 03m

1 stop

9:10 am - 5:55 pm

GEG

ICN

15h 45m

1 stop

$1,146Delta

Thu, Nov 19 - Sun, Nov 22

2:30 pm - 9:37 pm

ICN

GEG

24h 07m

1 stop

7:55 am - 5:55 pm

GEG

ICN

17h 00m

1 stop

$1,226Korean Air

Thu, Nov 19 - Sun, Nov 22

7:40 pm - 9:37 pm

ICN

GEG

18h 57m

1 stop

5:45 am - 4:20 pm

GEG

ICN

17h 35m

1 stop

$1,231Korean Air

Thu, Nov 19 - Sun, Nov 22

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Philippine Airlines flights from Seoul to State of Washington

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

Philippine Airlines

Oct 6

ICN7:20 amIncheon Intl

28h 45m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

Oct 13

SEA11:10 pmSeattle/Tacoma Intl

28h 05m

1 stop

ICN7:15 pmIncheon Intl

$781

Philippine Airlines

Sep 12

ICN8:30 pmIncheon Intl

39h 35m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

Sep 13

SEA11:10 pmSeattle/Tacoma Intl

28h 05m

1 stop

ICN7:15 pmIncheon Intl

$782

Philippine Airlines

Jul 5

ICN7:20 amIncheon Intl

28h 45m

1 stop

SEA8:05 pmSeattle/Tacoma Intl

Jul 8

SEA11:10 pmSeattle/Tacoma Intl

28h 05m

1 stop

ICN7:15 pmIncheon Intl

$783

Asiana Airlines flights from Seoul to State of Washington

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

Asiana Airlines

Jul 14

ICN9:20 pmIncheon Intl

10h 25m

SEA3:45 pmSeattle/Tacoma Intl

Jul 28

SEA12:10 amSeattle/Tacoma Intl

11h 50m

ICN4:00 amIncheon Intl

$958

Asiana Airlines

Jul 7

ICN9:20 pmIncheon Intl

10h 25m

SEA3:45 pmSeattle/Tacoma Intl

Jul 12

SEA12:10 amSeattle/Tacoma Intl

11h 50m

ICN4:00 amIncheon Intl

$959

Asiana Airlines

Jul 14

ICN9:20 pmIncheon Intl

10h 25m

SEA3:45 pmSeattle/Tacoma Intl

Oct 13

SEA12:10 amSeattle/Tacoma Intl

12h 20m

ICN4:30 amIncheon Intl

$961

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 10/6

7:20 am-8:05 pm

1 stop28h 45m

Seattle/Tacoma Intl

Tue 10/13

11:10 pm-7:15 pm

1 stop28h 05m

$781

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 9/12

8:30 pm-8:05 pm

1 stop39h 35m

Seattle/Tacoma Intl

Sun 9/13

11:10 pm-7:15 pm

1 stop28h 05m

$782

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 7/5

7:20 am-8:05 pm

1 stop28h 45m

Seattle/Tacoma Intl

Wed 7/8

11:10 pm-7:15 pm

1 stop28h 05m

$783

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 9/1

8:30 pm-8:05 pm

1 stop39h 35m

Seattle/Tacoma Intl

Tue 9/22

11:10 pm-7:15 pm

1 stop28h 05m

$784

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 11/6

8:00 pm-9:35 am

2 stops30h 35m

Portland

Tue 11/10

2:47 pm-5:35 pm

2 stops33h 48m

$1,024

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 11/6

8:00 pm-9:35 am

2 stops30h 35m

Portland

Tue 11/10

2:47 pm-5:35 pm

2 stops33h 48m

$1,027

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Mon 11/16

6:55 pm-6:31 pm

1 stop16h 36m

Portland

Wed 12/16

7:10 pm-5:10 pm

1 stop29h 00m

$1,057

Quickest round-trip

IncheonSpokane

ICN - GEG

ICNGEG

Incheon Intl

Thu 11/19

6:45 pm-6:48 pm

1 stop17h 03m

Spokane

Sun 11/22

9:10 am-5:55 pm

1 stop15h 45m

$1,146

IncheonSpokane

ICN - GEG

ICNGEG

Incheon Intl

Thu 11/19

2:30 pm-9:37 pm

1 stop24h 07m

Spokane

Sun 11/22

7:55 am-5:55 pm

1 stop17h 00m

$1,226

IncheonSpokane

ICN - GEG

ICNGEG

Incheon Intl

Thu 11/19

7:40 pm-9:37 pm

1 stop18h 57m

Spokane

Sun 11/22

5:45 am-4:20 pm

1 stop17h 35m

$1,231

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 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 August is, on average, the cheapest month to fly to State of Washington from Seoul, with most prices found around $143. If you aren’t able to travel to State of Washington during the month of August, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $329.

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 Monday. Travelers who choose to depart for State of Washington on a Monday will often find tickets for as low as $708. 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 $918.

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 $759. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $764 on average. Flights to State of Washington from Seoul in the evening 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 from Seoul to 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 $746 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 $609 on momondo.

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

There are 4 cabin classes available to choose from on Seoul to State of 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 4% 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	$643
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 $643. The best round-trip flight deal from Seoul to State of Washington found on momondo in the last 72 hours is $1,480.

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

Frequently asked questions about flying from Seoul to Washington

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 June 2026.
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 787-10 Dreamliner, making up 27.96% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 22.01%, Airbus A350-900 with 20.09%, and Boeing 777-200/200ER with 8.83%.

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 $351	Free Cancellation	Rating 7.8 2,826 reviews	Search Hawaiian Airlines flights
Korean Air	PriceFrom $468	Free Cancellation	Rating 8.4 1,221 reviews	Search Korean Air flights
Air Canada	PriceFrom $472	Free Cancellation	Rating 7.1 11,244 reviews	Search Air Canada flights
Alaska Airlines	PriceFrom $476	Free Cancellation	Rating 7.9 12,564 reviews	Search Alaska Airlines flights
Delta	PriceFrom $484	Free Cancellation	Rating 7.8 8,426 reviews	Search Delta flights
Asiana Airlines	PriceFrom $512	Free Cancellation	Rating 8.1 547 reviews	Search Asiana Airlines 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.

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Cheap flights from Seoul to Washington from $422

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 9/21. 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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Philippine Airlines flights from Seoul to State of Washington

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

Asiana Airlines flights from Seoul to State of Washington

Our best Asiana 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?

How far in advance should I book a flight from Seoul to Washington?

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

Can stopping save me money on Seoul to State of Washington flights?

What is the cheapest airline that flies 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?

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

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

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

Frequently asked questions about flying from Seoul to 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?

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

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