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 Incheon Intl Airport according to our data. Korean Air is the first choice among our users, with 43% 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.

What is the cheapest airline that flies from Incheon Intl to Washington?

Alaska Airlines, United Airlines, and Delta are the most popular carriers operating from Incheon Intl to Washington

When did momondo last update prices for flights from Incheon Intl Airport to Washington?

Prices for flights from Incheon Intl Airport to Washington are refreshed on a daily basis.

How many operators does momondo search for flights from Incheon Intl Airport to Washington?

There are 7 operators available for flights from Incheon Intl Airport to Washington as of April 2026.

How old do you have to be to fly from Incheon Intl Airport to Washington?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Incheon Intl Airport to Washington.

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

The required travel and health documents for your Washington 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 Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$401 Cheap Flights from Incheon Intl Airport to State of Washington in 2026

Q: How many flights depart from Incheon Intl Airport to State of Washington on average per day?

8 flights are operational daily from Incheon Intl Airport to State of Washington as of April 2026. The most popular departure time for this route is 9:00PM, with 89% of flights per day taking off in the evening.

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Find the cheapest flights from Incheon Intl Airport to Washington

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:00 pm - 2:55 pm

ICN

SEA

9h 55mnonstop

12:55 am - 5:15 am

SEA

ICN

12h 20mnonstop

$772Asiana Airlines

čt, květen 7 - út, květen 12

7:00 pm - 1:25 pm

ICN

SEA

10h 25mnonstop

1:20 pm - 4:40 pm

SEA

ICN

11h 20mnonstop

$781Korean Air

út, červen 2 - út, srpen 11

7:35 pm - 1:40 pm

ICN

SEA

10h 05mnonstop

1:35 pm - 5:30 pm

SEA

ICN

11h 55mnonstop

$787Alaska Airlines

so, srpen 22 - po, září 7

12:45 pm - 7:45 pm

ICN

SEA

23h 00m

1 stop

1:55 am - 11:30 am

SEA

ICN

17h 35m

1 stop

$819China Airlines

so, září 5 - so, září 12

12:40 am - 7:15 pm

ICN

SEA

34h 35m

1 stop

1:55 am - 11:30 am

SEA

ICN

17h 35m

1 stop

$840China Airlines

po, červen 22 - ne, červenec 26

7:35 pm - 4:55 pm

ICN

PDX

13h 20m

1 stop

5:37 pm - 5:30 pm

PDX

ICN

31h 53m

2 stops

$864Alaska Airlines

st, červenec 8 - st, červenec 22

5:45 pm - 10:08 am

ICN

SEA

32h 23m

1 stop

3:00 pm - 4:05 pm

SEA

ICN

33h 05m

1 stop

$865Air Canada

po, červen 8 - ne, září 6

7:00 pm - 1:25 pm

ICN

SEA

10h 25mnonstop

1:00 pm - 4:50 pm

SEA

ICN

11h 50mnonstop

$867Korean Air

st, červen 24 - čt, září 17

5:45 pm - 6:33 pm

ICN

SEA

16h 48m

1 stop

7:20 pm - 4:05 pm

SEA

ICN

28h 45m

1 stop

$870Air Canada

po, červen 8 - so, srpen 29

9:00 pm - 2:55 pm

ICN

SEA

9h 55mnonstop

12:55 am - 4:45 am

SEA

ICN

11h 50mnonstop

$876Asiana Airlines

út, červen 23 - ne, červenec 26

Korean Air flights from Incheon Intl Airport to State of Washington

Our best Korean Air deals on Incheon Intl Airport to State of Washington flight tickets

Korean Air

Jun 2

ICN7:00 pmIncheon Intl

10h 25m

SEA1:25 pmSeattle/Tacoma Intl

Aug 11

SEA1:20 pmSeattle/Tacoma Intl

11h 20m

ICN4:40 pmIncheon Intl

$781

Korean Air

Sep 30

ICN7:00 pmIncheon Intl

10h 37m

SEA1:37 pmSeattle/Tacoma Intl

Oct 13

SEA12:35 pmSeattle/Tacoma Intl

12h 15m

ICN4:50 pmIncheon Intl

$858

Korean Air

Jun 24

ICN7:00 pmIncheon Intl

10h 25m

SEA1:25 pmSeattle/Tacoma Intl

Sep 17

SEA1:00 pmSeattle/Tacoma Intl

11h 50m

ICN4:50 pmIncheon Intl

$867

Delta flights from Incheon Intl Airport to State of Washington

Our best Delta deals on Incheon Intl Airport to State of Washington flight tickets

Delta

Sep 12

ICN7:00 pmIncheon Intl

10h 37m

SEA1:37 pmSeattle/Tacoma Intl

Sep 18

SEA1:00 pmSeattle/Tacoma Intl

11h 50m

ICN4:50 pmIncheon Intl

$727

Delta

Sep 7

ICN7:00 pmIncheon Intl

10h 37m

SEA1:37 pmSeattle/Tacoma Intl

Sep 18

SEA7:20 amSeattle/Tacoma Intl

18h 00m

1 stop

ICN5:20 pmIncheon Intl

$737

Delta

Sep 7

ICN4:00 pmIncheon Intl

15h 24m

1 stop

SEA3:24 pmSeattle/Tacoma Intl

Sep 17

SEA7:20 amSeattle/Tacoma Intl

18h 00m

1 stop

ICN5:20 pmIncheon Intl

$752

momondo Fare Finder

Use the filters below to find and compare flights from Incheon Intl Airport to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

čt 5/7

9:00 pm-2:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

út 5/12

12:55 am-5:15 am

Nonstop12h 20m

$772

Quickest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

út 6/2

7:00 pm-1:25 pm

Nonstop10h 25m

Seattle/Tacoma Intl

út 8/11

1:20 pm-4:40 pm

Nonstop11h 20m

$781

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

so 8/22

7:35 pm-1:40 pm

Nonstop10h 05m

Seattle/Tacoma Intl

po 9/7

1:35 pm-5:30 pm

Nonstop11h 55m

$787

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

so 9/5

12:45 pm-7:45 pm

1 stop23h 00m

Seattle/Tacoma Intl

so 9/12

1:55 am-11:30 am

1 stop17h 35m

$819

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

po 6/22

12:40 am-7:15 pm

1 stop34h 35m

Seattle/Tacoma Intl

ne 7/26

1:55 am-11:30 am

1 stop17h 35m

$840

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

st 7/8

7:35 pm-4:55 pm

1 stop13h 20m

Portland

st 7/22

5:37 pm-5:30 pm

2 stops31h 53m

$864

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

po 6/8

5:45 pm-10:08 am

1 stop32h 23m

Seattle/Tacoma Intl

ne 9/6

3:00 pm-4:05 pm

1 stop33h 05m

$865

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

st 6/24

7:00 pm-1:25 pm

Nonstop10h 25m

Seattle/Tacoma Intl

čt 9/17

1:00 pm-4:50 pm

Nonstop11h 50m

$867

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

po 6/8

5:45 pm-6:33 pm

1 stop16h 48m

Seattle/Tacoma Intl

so 8/29

7:20 pm-4:05 pm

1 stop28h 45m

$870

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

út 6/23

9:00 pm-2:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

ne 7/26

12:55 am-4:45 am

Nonstop11h 50m

$876

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 Incheon Intl Airport 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 Incheon Intl Airport, with most prices found around $532. 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 $575.

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

The cheapest day to depart from Incheon Intl Airport 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 $698. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Incheon Intl Airport 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 $746. 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 Incheon Intl Airport in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Incheon Intl to Washington flight route?

Fly from Incheon Intl to Seattle/Tacoma Intl for the best Incheon Intl - 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 Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $692 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 Incheon Intl Airport for as low as $589 on momondo.

What cabin class options are available on Incheon Intl to Washington flights?

There are 4 cabin classes available to choose from on Incheon Intl 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 Incheon Intl Airport to State of Washington flights?

No. A direct flight is the cheapest option for a flight between Incheon Intl Airport to State of Washington.

Cheap Incheon Intl Airport to State of Washington flight deals and tips

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

Best Price Found	$613
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 Incheon Intl Airport in the past 72 hours is $613. The best round-trip flight deal from Incheon Intl Airport to State of Washington found on momondo in the last 72 hours is $754.

The fastest flight from Incheon Intl Airport to State of Washington takes 10h 00m

Direct flights go from Incheon Intl Airport to State of Washington every day.

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

Search flight deals

Frequently asked questions about flying from Incheon Intl Airport to Washington

When did momondo last update prices for flights from Incheon Intl Airport to Washington?
Prices for flights from Incheon Intl Airport to Washington are refreshed on a daily basis.
How many operators does momondo search for flights from Incheon Intl Airport to Washington?
There are 7 operators available for flights from Incheon Intl Airport to Washington as of April 2026.
How old do you have to be to fly from Incheon Intl Airport to Washington?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Incheon Intl Airport to Washington.
What documentation or ID do you need to fly to Washington?
The required travel and health documents for your Washington 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 Washington. 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 Incheon Intl Airport to State of Washington?
momondo data reveals that the most frequently booked plane model on the route from Incheon Intl Airport to State of Washington is Boeing 787-10 Dreamliner, representing 28.07% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 23.85%, Airbus A350-900 at 20.02%, and Boeing 777-200/200ER at 8.32%.

Best airlines flying from Incheon Intl Airport to State of Washington

Compare and see reviews for airlines that fly from Incheon Intl Airport to State of Washington with momondo

Airline	Rating	Free Cancellation	Price
Hawaiian Airlines	PriceFrom $351	Free Cancellation	Rating 7.8 2,838 reviews	Search Hawaiian Airlines flights
Korean Air	PriceFrom $470	Free Cancellation	Rating 8.4 1,203 reviews	Search Korean Air flights
Air Canada	PriceFrom $472	Free Cancellation	Rating 7.1 10,894 reviews	Search Air Canada flights
Alaska Airlines	PriceFrom $476	Free Cancellation	Rating 7.9 12,173 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $477	Free Cancellation	Rating 8.1 510 reviews	Search Asiana Airlines flights
Delta	PriceFrom $485	Free Cancellation	Rating 7.9 8,386 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?

Finding the right flight to Washington from Seoul 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 Washington quick and easy, saving you time and money.

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

Yes. All flights to Washington from Seoul on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Of course. momondo tracks the price of Seoul to Washington flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from Incheon Intl Airport to Washington from $401

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Incheon Intl Airport to Washington departing on 5/4. 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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Korean Air flights from Incheon Intl Airport to State of Washington

Our best Korean Air deals on Incheon Intl Airport to State of Washington flight tickets

Delta flights from Incheon Intl Airport to State of Washington

Our best Delta deals on Incheon Intl Airport to State of Washington flight tickets

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Use the filters below to find and compare flights from Incheon Intl Airport to Washington that are best for you.

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How to get the cheapest flight ticket from Incheon Intl Airport 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 Incheon Intl to Washington flight route?

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

What cabin class options are available on Incheon Intl to Washington flights?

Can stopping save me money on Incheon Intl Airport to State of Washington flights?

What is the cheapest airline that flies from Incheon Intl to Washington?

What airlines fly to State of Washington?

How many flights depart from Incheon Intl Airport to State of Washington on average per day?

How many flights depart from Incheon Intl Airport to State of Washington on average per week?

Cheap Incheon Intl Airport to State of Washington flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

Frequently asked questions about flying from Incheon Intl Airport to Washington

Best airlines flying from Incheon Intl Airport to State of Washington

Compare and see reviews for airlines that fly from Incheon Intl Airport 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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