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

On average, it takes 11h 25m 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 Spokane and into Incheon Intl Airport, then the flight time is around 17h 20m.

What airlines fly to Incheon Intl Airport?

Korean Air, Asiana Airlines and Air Canada 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 41% 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?

WestJet, Asiana Airlines, and Korean Air are the most popular carriers 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 August 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.

$352 Cheap Flights from State of Washington to Incheon Intl Airport in 2025

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

As of August 2025, there are 7 flights per day flying from State of Washington to Incheon Intl Airport. The most common time of day flights depart is 2:00PM, with 100% of flights taking off in the afternoon.

Q: 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 54 per week as of August 2025. The most frequent departure day is Wed, with 17% of weekly flights leaving on this day.

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Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

7:15 pm - 4:05 pmSEA-ICN

28h 50m1 stop

9:45 am - 6:36 pmICN-SEA

24h 51m2 stops

$633

Find Deal

dom., sep. 7 - mié., sep. 17

10:00 am - 9:40 pmSEA-ICN

19h 40m2 stops

9:45 am - 6:36 pmICN-SEA

24h 51m2 stops

$654

Find Deal

dom., sep. 7 - mié., sep. 17

6:30 am - 2:05 pmSEA-ICN

39h 35m2 stops

7:35 pm - 7:11 amICN-SEA

27h 36m2 stops

$727Cathay Pacific

Find Deal

mar., oct. 14 - mar., oct. 28

2:42 pm - 12:45 pmSEA-ICN

30h 03m2 stops

10:05 am - 10:31 pmICN-SEA

29h 26m2 stops

$737Cathay Pacific

Find Deal

lun., oct. 27 - lun., dic. 8

5:30 am - 4:05 pmSEA-ICN

18h 35m1 stop

5:45 pm - 6:36 pmICN-SEA

16h 51m1 stop

$744Air Canada

Find Deal

dom., ago. 31 - sáb., sep. 13

10:00 am - 4:05 pmSEA-ICN

14h 05m1 stop

5:45 pm - 2:16 pmICN-SEA

12h 31m1 stop

$769Air Canada

Find Deal

sáb., sep. 6 - mié., sep. 17

9:30 pm - 7:00 pmPDX-ICN

29h 30m2 stops

9:25 pm - 12:27 pmICN-PDX

31h 02m2 stops

$791Alaska Airlines

Find Deal

mié., sep. 3 - mié., sep. 10

7:55 am - 7:00 pmPDX-ICN

19h 05m1 stop

9:25 pm - 10:40 pmICN-PDX

17h 15m1 stop

$821Hawaiian Airlines

Find Deal

vie., ago. 29 - vie., sep. 5

6:05 am - 7:00 pmPDX-ICN

20h 55m2 stops

9:25 pm - 10:57 amICN-PDX

29h 32m2 stops

$841Alaska Airlines

Find Deal

vie., ago. 29 - vie., sep. 5

8:45 am - 6:35 pmPSC-ICN

17h 50m1 stop

8:35 pm - 9:15 pmICN-PSC

16h 40m1 stop

$1,030Hawaiian Airlines

Find Deal

sáb., sep. 20 - sáb., sep. 27

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

Aug 31

SEA5:30 amSeattle/Tacoma Intl

18h 35m

1 stop

ICN4:05 pmIncheon Intl

Sep 13

ICN5:45 pmIncheon Intl

16h 51m

1 stop

SEA6:36 pmSeattle/Tacoma Intl

$744

Find similar

Air Canada

Sep 6

SEA10:00 amSeattle/Tacoma Intl

14h 05m

1 stop

ICN4:05 pmIncheon Intl

Sep 17

ICN5:45 pmIncheon Intl

12h 31m

1 stop

SEA2:16 pmSeattle/Tacoma Intl

$769

Find similar

Air Canada

Sep 20

SEA10:00 amSeattle/Tacoma Intl

14h 05m

1 stop

ICN4:05 pmIncheon Intl

Sep 27

ICN5:45 pmIncheon Intl

12h 31m

1 stop

SEA2:16 pmSeattle/Tacoma Intl

$771

Find similar

American Airlines flights from State of Washington to Incheon Intl Airport

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

American Airlines

Aug 17

PDX11:59 pmPortland

23h 31m

1 stop

ICN3:30 pmIncheon Intl

Aug 31

ICN5:25 pmIncheon Intl

22h 34m

2 stops

PDX11:59 pmPortland

$1,226

Find similar

American Airlines

Dec 21

PUW5:05 amPullman Moscow Regional

66h 40m

2 stops

ICN4:45 pmIncheon Intl

Jan 9

ICN6:50 pmIncheon Intl

35h 26m

2 stops

PUW1:16 pmPullman Moscow Regional

$2,677

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

dom. 9/7

7:15 pm-4:05 pm

1 stop28h 50m

Incheon Intl

mié. 9/17

9:45 am-6:36 pm

2 stops24h 51m

$633

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

dom. 9/7

10:00 am-9:40 pm

2 stops19h 40m

Incheon Intl

mié. 9/17

9:45 am-6:36 pm

2 stops24h 51m

$654

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

mar. 10/14

6:30 am-2:05 pm

2 stops39h 35m

Incheon Intl

mar. 10/28

7:35 pm-7:11 am

2 stops27h 36m

$727

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

lun. 10/27

2:42 pm-12:45 pm

2 stops30h 03m

Incheon Intl

lun. 12/8

10:05 am-10:31 pm

2 stops29h 26m

$737

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

dom. 8/31

5:30 am-4:05 pm

1 stop18h 35m

Incheon Intl

sáb. 9/13

5:45 pm-6:36 pm

1 stop16h 51m

$744

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

sáb. 9/6

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

mié. 9/17

5:45 pm-2:16 pm

1 stop12h 31m

$769

PortlandIncheon

PDX - ICN

PDXICN

Portland

mié. 9/3

9:30 pm-7:00 pm

2 stops29h 30m

Incheon Intl

mié. 9/10

9:25 pm-12:27 pm

2 stops31h 02m

$791

PortlandIncheon

PDX - ICN

PDXICN

Portland

vie. 8/29

7:55 am-7:00 pm

1 stop19h 05m

Incheon Intl

vie. 9/5

9:25 pm-10:40 pm

1 stop17h 15m

$821

PortlandIncheon

PDX - ICN

PDXICN

Portland

vie. 8/29

6:05 am-7:00 pm

2 stops20h 55m

Incheon Intl

vie. 9/5

9:25 pm-10:57 am

2 stops29h 32m

$841

PascoIncheon

PSC - ICN

PSCICN

Pasco Tri Cities

sáb. 9/20

8:45 am-6:35 pm

1 stop17h 50m

Incheon Intl

sáb. 9/27

8:35 pm-9:15 pm

1 stop16h 40m

$1,030

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 February. Flight prices, which tend to average around $971, 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 February, then departing from State of Washington during the month January is also very affordable. Most momondo users find prices during this month for around $1,030.

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 $867. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,037. 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 $744. 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 $1,196 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 $994 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?

No. A direct flight is the cheapest option for a flight between State of Washington 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	$352
Fastest flight time	11h 25m
Direct flights	Every day

The best one-way flight to Incheon Intl Airport from State of Washington in the past 72 hours is $352. The best round-trip flight deal from State of Washington to Incheon Intl Airport found on momondo in the last 72 hours is $633.

The fastest flight from State of Washington to Incheon Intl Airport takes 11h 25m

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 August 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 787-10 Dreamliner, representing 26.45% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 19.56%, Airbus A350-900 at 19.38%, and Boeing 777-200LR at 14.73%.

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 8.0 7,985 reviews	Search Delta flights
Alaska Airlines	PriceFrom $182	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $282	Free Cancellation	Rating 7.4 8,917 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $763	Free Cancellation	Rating 7.8 2,631 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $798	Free Cancellation	Rating 7.1 9,893 reviews	Search Air Canada flights
China Airlines	PriceFrom $886	Free Cancellation	Rating 8.3 760 reviews	Search China Airlines flights
Asiana Airlines	PriceFrom $899	Free Cancellation	Rating 8.2 470 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $908	Free Cancellation	Rating 8.4 1,121 reviews	Search Korean Air flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,225 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $1,007	Free Cancellation	Rating 7.3 3,932 reviews	Search Turkish Airlines flights

Suwon

Seongnam

Daejeon

Anyang

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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

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Cheap flights from Washington to Seoul from $352

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 10/2. 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 State of Washington to Incheon Intl Airport

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

American Airlines flights from State of Washington to Incheon Intl Airport

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

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

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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?

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

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

WestJet, Asiana Airlines, and Korean Air are the most popular carriers 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 August 2025, there are 7 flights per day flying from State of Washington to Incheon Intl Airport. The most common time of day flights depart is 2:00PM, with 100% 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 54 per week as of August 2025. The most frequent departure day is Wed, with 17% 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