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

WestJet, Delta, and United Airlines are the most popular carriers operating from Seoul to Washington

What airlines fly to State of Washington?

Korean Air, Asiana Airlines and Delta 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 7 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 April 2026. The most popular departure time for this route is 9:00PM, with 73% 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 10h and 18h 35m, respectively.

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 49 per week as of April 2026. The most frequent departure day is Thu, with 18% of weekly flights leaving on this day.

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 7 operators available for flights from Seoul to Washington as of April 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.

$417 Cheap Flights from Seoul to Washington in 2026

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Find the cheapest flights from Seoul to Washington

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:45 pm - 9:52 am

ICN

SEA

32h 07m

1 stop

3:00 pm - 4:05 pm

SEA

ICN

33h 05m

1 stop

$743Air Canada

Mon, Sep 28 - Mon, Oct 19

5:45 pm - 10:42 pm

ICN

SEA

20h 57m

1 stop

7:05 pm - 4:10 pm

SEA

ICN

29h 05m

1 stop

$767Air Canada

Mon, Oct 19 - Fri, Oct 30

5:45 pm - 10:42 pm

ICN

SEA

20h 57m

1 stop

5:45 am - 5:10 pm

SEA

ICN

18h 25m

1 stop

$793Air Canada

Mon, Sep 14 - Mon, Nov 16

5:45 pm - 2:22 pm

ICN

SEA

12h 37m

1 stop

3:00 pm - 4:05 pm

SEA

ICN

33h 05m

1 stop

$806Air Canada

Thu, Oct 15 - Mon, Oct 19

11:30 am - 2:36 pm

ICN

SEA

19h 06m

2 stops

5:04 pm - 4:20 am

SEA

ICN

19h 16m

2 stops

$820United Airlines

Mon, Jun 8 - Mon, Aug 3

7:40 am - 2:25 pm

GMP

SEA

22h 45m

1 stop

10:45 am - 11:05 am

SEA

GMP

32h 20m

2 stops

$853ANA

Mon, Jul 6 - Fri, Jul 10

7:40 am - 2:25 pm

GMP

SEA

22h 45m

1 stop

4:30 pm - 11:05 am

SEA

GMP

26h 35m

1 stop

$869ANA

Wed, Sep 23 - Mon, Oct 12

4:50 pm - 10:01 am

ICN

SEA

33h 11m

2 stops

1:16 pm - 3:00 pm

SEA

ICN

33h 44m

1 stop

$883United Airlines

Mon, Sep 28 - Mon, Oct 19

5:45 pm - 9:05 pm

ICN

PDX

19h 20m

2 stops

7:45 pm - 4:05 pm

PDX

ICN

28h 20m

1 stop

$966Multiple Airlines

Sat, Oct 3 - Thu, Oct 15

7:15 pm - 11:26 am

GMP

PDX

32h 11m

2 stops

9:30 pm - 12:50 pm

PDX

GMP

46h 20m

2 stops

$1,286EVA Air

Tue, Oct 13 - Tue, Dec 8

Air Canada flights from Seoul to State of Washington

Our best Air Canada deals on Seoul to State of Washington flight tickets

Air Canada

Sep 28

ICN5:45 pmIncheon Intl

32h 07m

1 stop

SEA9:52 amSeattle/Tacoma Intl

Oct 19

SEA3:00 pmSeattle/Tacoma Intl

33h 05m

1 stop

ICN4:05 pmIncheon Intl

$743

Air Canada

Oct 19

ICN5:45 pmIncheon Intl

20h 57m

1 stop

SEA10:42 pmSeattle/Tacoma Intl

Oct 30

SEA7:05 pmSeattle/Tacoma Intl

29h 05m

1 stop

ICN4:10 pmIncheon Intl

$767

Air Canada

Sep 14

ICN5:45 pmIncheon Intl

20h 57m

1 stop

SEA10:42 pmSeattle/Tacoma Intl

Nov 16

SEA5:45 amSeattle/Tacoma Intl

18h 25m

1 stop

ICN5:10 pmIncheon Intl

$793

WestJet flights from Seoul to State of Washington

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

WestJet

Jun 6

ICN8:45 pmIncheon Intl

26h 50m

2 stops

SEA7:35 amSeattle/Tacoma Intl

Jun 13

SEA9:42 pmSeattle/Tacoma Intl

29h 03m

2 stops

ICN6:45 pmIncheon Intl

$917

WestJet

Jun 6

ICN8:45 pmIncheon Intl

26h 50m

2 stops

SEA7:35 amSeattle/Tacoma Intl

Jun 13

SEA9:42 pmSeattle/Tacoma Intl

29h 03m

2 stops

ICN6:45 pmIncheon Intl

$918

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 9/28

5:45 pm-9:52 am

1 stop32h 07m

Seattle/Tacoma Intl

Mon 10/19

3:00 pm-4:05 pm

1 stop33h 05m

$743

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 10/19

5:45 pm-10:42 pm

1 stop20h 57m

Seattle/Tacoma Intl

Fri 10/30

7:05 pm-4:10 pm

1 stop29h 05m

$767

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 9/14

5:45 pm-10:42 pm

1 stop20h 57m

Seattle/Tacoma Intl

Mon 11/16

5:45 am-5:10 pm

1 stop18h 25m

$793

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 10/15

5:45 pm-2:22 pm

1 stop12h 37m

Seattle/Tacoma Intl

Mon 10/19

3:00 pm-4:05 pm

1 stop33h 05m

$806

Quickest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 6/8

11:30 am-2:36 pm

2 stops19h 06m

Seattle/Tacoma Intl

Mon 8/3

5:04 pm-4:20 am

2 stops19h 16m

$820

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Mon 7/6

7:40 am-2:25 pm

1 stop22h 45m

Seattle/Tacoma Intl

Fri 7/10

10:45 am-11:05 am

2 stops32h 20m

$853

SeoulSeattle

GMP - SEA

GMPSEA

Seoul Gimpo Intl

Wed 9/23

7:40 am-2:25 pm

1 stop22h 45m

Seattle/Tacoma Intl

Mon 10/12

4:30 pm-11:05 am

1 stop26h 35m

$869

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 9/28

4:50 pm-10:01 am

2 stops33h 11m

Seattle/Tacoma Intl

Mon 10/19

1:16 pm-3:00 pm

1 stop33h 44m

$883

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 10/3

5:45 pm-9:05 pm

2 stops19h 20m

Portland

Thu 10/15

7:45 pm-4:05 pm

1 stop28h 20m

$966

SeoulPortland

GMP - PDX

GMPPDX

Seoul Gimpo Intl

Tue 10/13

7:15 pm-11:26 am

2 stops32h 11m

Portland

Tue 12/8

9:30 pm-12:50 pm

2 stops46h 20m

$1,286

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

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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 $522. If you aren’t able to travel to State of Washington during the month of November, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $569.

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 $706. 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 $919.

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 evening when flights can be purchased for as low as $750. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $754 on average. Flights to State of Washington from Seoul in the afternoon 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 $698 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 $589 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?

No. A direct flight is the cheapest option for a flight between 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	$612
Fastest flight time	10h 00m
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 $612. The best round-trip flight deal from Seoul to State of Washington found on momondo in the last 72 hours is $837.

The fastest flight from Seoul to State of Washington takes 10h 00m

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 7 operators available for flights from Seoul to Washington as of April 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 28.45% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 23.66%, Airbus A350-900 with 19.79%, and Boeing 777-200/200ER with 8.09%.

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 2,837 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $472	Free Cancellation	Rating 7.1 10,959 reviews	Search Air Canada flights
Alaska Airlines	PriceFrom $476	Free Cancellation	Rating 7.9 12,274 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $477	Free Cancellation	Rating 8.0 519 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $483	Free Cancellation	Rating 8.4 1,212 reviews	Search Korean Air flights
Delta	PriceFrom $485	Free Cancellation	Rating 7.9 8,444 reviews	Search Delta flights
Alaska Airlines	PriceFrom $583	Free Cancellation	Rating 0.0	Search Alaska 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.

An easier way to manage your State of Washington trip

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Flights to Fort Lauderdalefrom $42

Cheap flights from Seoul to Washington from $417

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 5/12. 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 Seoul to State of Washington

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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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