How long does it take to fly to Incheon Intl Airport?

On average, it takes 11h 45m to fly from State of Washington to Incheon Intl Airport if you fly out of Seattle (the most popular airport in State of Washington) and into Incheon Intl Airport (the most popular airport in Incheon Intl Airport). If you’re flying out of Pasco and into Incheon Intl Airport, then the flight time is around 16h 50m.

What airlines fly to Incheon Intl Airport?

Korean Air, Asiana Airlines and Delta are the top three most popular airlines that fly to Incheon Intl Airport 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 Incheon Intl Airport. Keep in mind that there are 10 different airlines that fly to Incheon Intl Airport on a routine basis, so you have a few additional options to choose from.

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

Hainan Airlines is the most popular carrier operating from Washington to Incheon Intl

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

Prices for flights from Washington to Incheon Intl Airport are updated daily.

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

As of November 2025, there are 10 operators available to choose from for flights from Washington to Incheon Intl Airport.

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

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 Washington to Incheon Intl Airport.

What documentation or ID do you need to fly to Incheon Intl Airport?

The travel and health documents you'll need for your trip to Incheon Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Incheon Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$307 Cheap Flights from State of Washington to Incheon Intl Airport in 2025/26

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

As of November 2025, there are 8 flights per day flying from State of Washington to Incheon Intl Airport. The most common time of day flights depart is 11:00AM, with 47% of flights taking off in the afternoon.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Washington to Seoul

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 11:50 amSEA-ICN

35h 50m2 stops

9:20 pm - 6:50 pmICN-SEA

14h 30m1 stop

$636Multiple Airlines

Find Deal

Tue, Dec 9 - Tue, Dec 23

7:00 am - 1:25 pmSEA-ICN

37h 25m2 stops

9:20 pm - 8:41 pmICN-SEA

16h 21m1 stop

$637Multiple Airlines

Find Deal

Mon, Dec 8 - Sun, Dec 21

7:00 am - 11:50 amSEA-ICN

35h 50m2 stops

9:20 pm - 8:41 pmICN-SEA

16h 21m1 stop

$641Multiple Airlines

Find Deal

Tue, Dec 9 - Sun, Dec 21

10:05 am - 5:10 pmSEA-ICN

14h 05m1 stop

6:55 pm - 7:16 pmICN-SEA

17h 21m1 stop

$665Air Canada

Find Deal

Thu, Nov 20 - Wed, Nov 26

10:05 am - 5:10 pmSEA-ICN

14h 05m1 stop

5:55 pm - 7:16 pmICN-SEA

18h 21m1 stop

$668Air Canada

Find Deal

Mon, Nov 24 - Sun, Dec 7

10:05 am - 9:00 pmSEA-ICN

41h 55m2 stops

10:10 pm - 8:05 amICN-SEA

26h 55m2 stops

$683Hainan Airlines

Find Deal

Thu, Nov 20 - Wed, Nov 26

11:30 am - 6:35 pmPDX-ICN

15h 05m1 stop

8:35 pm - 10:21 pmICN-PDX

17h 46m1 stop

$816Alaska Airlines

Find Deal

Thu, Apr 16 - Mon, Apr 20

1:38 pm - 6:35 pmPDX-ICN

35h 57m1 stop

8:35 pm - 10:46 pmICN-PDX

19h 11m1 stop

$821Alaska Airlines

Find Deal

Tue, Jan 20 - Thu, Feb 5

11:59 pm - 4:45 pmPDX-ICN

23h 46m1 stop

7:15 pm - 9:24 pmICN-PDX

19h 09m1 stop

$902American Airlines

Find Deal

Fri, Dec 5 - Fri, Dec 12

1:55 pm - 3:30 pmEAT-ICN

57h 35m2 stops

5:25 pm - 1:14 pmICN-EAT

35h 49m2 stops

$1,090American Airlines

Find Deal

Sun, Apr 12 - Thu, Apr 16

Hawaiian Airlines flights from State of Washington to Incheon Intl Airport

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

Hawaiian Airlines

Apr 12

EAT5:15 amWenatchee Pangborn Field

21h 20m

1 stop

ICN6:35 pmIncheon Intl

Apr 16

ICN8:35 pmIncheon Intl

32h 39m

1 stop

EAT1:14 pmWenatchee Pangborn Field

$1,044

Find similar

Hawaiian Airlines

Apr 12

PUW6:55 pmPullman Moscow Regional

31h 40m

1 stop

ICN6:35 pmIncheon Intl

Apr 16

ICN8:35 pmIncheon Intl

19h 36m

1 stop

PUW12:11 amPullman Moscow Regional

$1,050

Find similar

Air Canada flights from State of Washington to Incheon Intl Airport

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

Air Canada

Nov 20

SEA10:05 amSeattle/Tacoma Intl

14h 05m

1 stop

ICN5:10 pmIncheon Intl

Nov 26

ICN6:55 pmIncheon Intl

17h 21m

1 stop

SEA7:16 pmSeattle/Tacoma Intl

$665

Find similar

Air Canada

Nov 24

SEA10:05 amSeattle/Tacoma Intl

14h 05m

1 stop

ICN5:10 pmIncheon Intl

Dec 7

ICN5:55 pmIncheon Intl

18h 21m

1 stop

SEA7:16 pmSeattle/Tacoma Intl

$668

Find similar

Air Canada

Nov 17

SEA5:50 amSeattle/Tacoma Intl

18h 20m

1 stop

ICN5:10 pmIncheon Intl

Nov 23

ICN6:55 pmIncheon Intl

20h 11m

1 stop

SEA10:06 pmSeattle/Tacoma Intl

$708

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 12/9

7:00 am-11:50 am

2 stops35h 50m

Incheon Intl

Tue 12/23

9:20 pm-6:50 pm

1 stop14h 30m

$636

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 12/8

7:00 am-1:25 pm

2 stops37h 25m

Incheon Intl

Sun 12/21

9:20 pm-8:41 pm

1 stop16h 21m

$637

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Tue 12/9

7:00 am-11:50 am

2 stops35h 50m

Incheon Intl

Sun 12/21

9:20 pm-8:41 pm

1 stop16h 21m

$641

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 11/20

10:05 am-5:10 pm

1 stop14h 05m

Incheon Intl

Wed 11/26

6:55 pm-7:16 pm

1 stop17h 21m

$665

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 11/24

10:05 am-5:10 pm

1 stop14h 05m

Incheon Intl

Sun 12/7

5:55 pm-7:16 pm

1 stop18h 21m

$668

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 11/20

10:05 am-9:00 pm

2 stops41h 55m

Incheon Intl

Wed 11/26

10:10 pm-8:05 am

2 stops26h 55m

$683

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 4/16

11:30 am-6:35 pm

1 stop15h 05m

Incheon Intl

Mon 4/20

8:35 pm-10:21 pm

1 stop17h 46m

$816

PortlandIncheon

PDX - ICN

PDXICN

Portland

Tue 1/20

1:38 pm-6:35 pm

1 stop35h 57m

Incheon Intl

Thu 2/5

8:35 pm-10:46 pm

1 stop19h 11m

$821

PortlandIncheon

PDX - ICN

PDXICN

Portland

Fri 12/5

11:59 pm-4:45 pm

1 stop23h 46m

Incheon Intl

Fri 12/12

7:15 pm-9:24 pm

1 stop19h 09m

$902

WenatcheeIncheon

EAT - ICN

EATICN

Wenatchee Pangborn Field

Sun 4/12

1:55 pm-3:30 pm

2 stops57h 35m

Incheon Intl

Thu 4/16

5:25 pm-1:14 pm

2 stops35h 49m

$1,090

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 Incheon Intl Airport

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 Incheon Intl Airport?

The cheapest month to fly to Incheon Intl Airport from State of Washington is in September. Flight prices, which tend to average around $963, are often lower during this time because this is during the off-season. If you are unable to visit Incheon Intl Airport during the month of September, then departing from State of Washington during the month February is also very affordable. Most momondo users find prices during this month for around $966.

What is the cheapest day to depart on your flight to Incheon Intl Airport?

The cheapest day to depart from State of Washington to Incheon Intl Airport is on a Monday when prices can be found for as low as $829. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,016. These prices are subject to change though, so be sure to set up a Price Alert for flights to Incheon Intl Airport.

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

In the evening is the cheapest time of day to fly from State of Washington to Incheon Intl Airport when you can find flight prices for as low as $715. Flying to Incheon Intl Airport in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,401 on average. Flights to Incheon Intl Airport 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 Incheon Intl flight route?

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

How far in advance should I book a flight to Incheon Intl Airport?

You are more likely to see cheaper flights to Incheon Intl Airport from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Incheon Intl Airport for around $1,137 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Incheon Intl Airport from State of Washington for as low as $929 on momondo.

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

There are 3 cabin classes available to choose from on Washington to Incheon Intl 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 Incheon Intl Airport flights?

You could potentially save up to 1% on your flight if you consider stops on a State of Washington to Incheon Intl Airport flight.

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

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

Best Price Found	$379
Fastest flight time	11h 55m
Direct flights	Every day

The best one-way flight to Incheon Intl Airport from State of Washington in the past 72 hours is $379. The best round-trip flight deal from State of Washington to Incheon Intl Airport found on momondo in the last 72 hours is $681.

The fastest flight from State of Washington to Incheon Intl Airport takes 11h 55m

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

Search flight deals

When did momondo last update prices for flights from Washington to Incheon Intl Airport?
Prices for flights from Washington to Incheon Intl Airport are updated daily.
How many operators does momondo search for flights from Washington to Incheon Intl Airport?
As of November 2025, there are 10 operators available to choose from for flights from Washington to Incheon Intl Airport.
How old do you have to be to fly from Washington to Incheon Intl Airport?
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 Washington to Incheon Intl Airport.
What documentation or ID do you need to fly to Incheon Intl Airport?
The travel and health documents you'll need for your trip to Incheon Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Incheon Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from State of Washington to Incheon Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to Incheon Intl Airport is Boeing 787-9 Dreamliner, representing 30.11% of all bookings. The subsequent popular models are Boeing 787-10 Dreamliner at 19.66%, Airbus A350-900 at 15.38%, and Boeing 787 Dreamliner at 8.51%.

Best airlines flying from State of Washington to Incheon Intl Airport

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $167	Free Cancellation	Rating 7.9 8,001 reviews	Search Delta flights
Alaska Airlines	PriceFrom $190	Free Cancellation	Rating 8.0 11,246 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $282	Free Cancellation	Rating 7.4 9,007 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $282	Free Cancellation	Rating 7.8 2,804 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $709	Free Cancellation	Rating 7.1 10,416 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $802	Free Cancellation	Rating 8.2 485 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $850	Free Cancellation	Rating 8.4 1,160 reviews	Search Korean Air flights
China Airlines	PriceFrom $886	Free Cancellation	Rating 8.3 778 reviews	Search China Airlines flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,272 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $1,007	Free Cancellation	Rating 7.3 4,032 reviews	Search Turkish Airlines flights

Suwon

Seongnam

Daejeon

Anyang

Why use momondo?

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

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

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

Yes. momondo allows you to filter the results for Washington to Seoul flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Washington and Seoul by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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

An easier way to manage your Incheon Intl Airport 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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 12/6

Sat 12/13

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Seoul

Popular cities in South Korea

Flights to Seoul Gimpo Intl Airportfrom $747

State of Washington flight routes

Flights from Seattle/Tacoma Intl to Santa Rosa Sonoma County

Flights from Seattle/Tacoma Intl to Las Vegas Harry Reid Intl

Flights from Seattle/Tacoma Intl to Spokane

Flights from Seattle/Tacoma Intl to Portland

Flights from Seattle/Tacoma Intl to Phoenix Sky Harbor Intl

Flights from Seattle/Tacoma Intl to Oakland

Cheap flights from Washington to Seoul from $307

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 Seoul departing on 12/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Washington to Seoul

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Hawaiian Airlines flights from State of Washington to Incheon Intl Airport

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

Air Canada flights from State of Washington to Incheon Intl Airport

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

momondo Fare Finder

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

See travel insights to Seoul from

How to get the cheapest flight ticket from State of Washington to Incheon Intl Airport

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 Incheon Intl Airport?

What is the cheapest day to depart on your flight to Incheon Intl Airport?

What is the cheapest time of day to depart on your flight to Incheon Intl Airport?

What is the cheapest Washington to Incheon Intl flight route?

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

How far in advance should I book a flight to Incheon Intl Airport?

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

There are 3 cabin classes available to choose from on Washington to Incheon Intl 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 Incheon Intl Airport flights?

You could potentially save up to 1% on your flight if you consider stops on a State of Washington to Incheon Intl Airport flight.

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

Hainan Airlines is the most popular carrier operating from Washington to Incheon Intl

What airlines fly to Incheon Intl Airport?

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

As of November 2025, there are 8 flights per day flying from State of Washington to Incheon Intl Airport. The most common time of day flights depart is 11:00AM, with 47% of flights taking off in the afternoon.

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

The number of flights available between State of Washington and Incheon Intl Airport is 56 per week as of November 2025. The most frequent departure day is Wed, with 18% of weekly flights leaving on this day.

How long does it take to fly to Incheon Intl Airport?

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

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

Best Price Found

Fastest flight time

Direct flights

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

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

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

What documentation or ID do you need to fly to Incheon Intl Airport?

What is the most popular plane model from State of Washington to Incheon Intl Airport?

Best airlines flying from State of Washington to Incheon Intl Airport

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

Traveling to a place near Seoul?

Why use momondo?

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

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

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

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

An easier way to manage your Incheon Intl Airport 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 Seoul

Popular cities in South Korea

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