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

Hainan Airlines, Asiana Airlines, and Air Canada are the most popular carriers operating from Washington to Incheon Intl

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

On average, it takes 11h 20m 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 18h 30m.

What airlines fly to Incheon Intl Airport?

Alaska Airlines, Korean Air and Asiana Airlines are the top three most popular airlines that fly to Incheon Intl Airport from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 54% 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.

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 February 2026, 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.

$343 Cheap Flights from State of Washington to Incheon Intl Airport in 2026

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

As of February 2026, 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 50% of flights taking off at noon.

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 57 per week as of February 2026. The most frequent departure day is Sat, with 18% of weekly flights leaving on this day.

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Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:50 am - 4:05 pm

PDX

ICN

14h 15m

1 stop

8:40 pm - 9:30 am

ICN

PDX

28h 50m

2 stops

$656Multiple Airlines

Thu, Apr 30 - Thu, May 28

11:05 am - 8:35 pm

SEA

ICN

41h 30m

2 stops

9:40 pm - 9:05 am

ICN

SEA

27h 25m

2 stops

$664Hainan Airlines

Thu, Mar 12 - Wed, Mar 25

11:05 am - 8:35 pm

SEA

ICN

41h 30m

2 stops

9:40 pm - 9:05 am

ICN

SEA

27h 25m

2 stops

$674Hainan Airlines

Thu, Mar 12 - Wed, Mar 25

11:05 am - 8:35 pm

SEA

ICN

41h 30m

2 stops

9:40 pm - 9:05 am

ICN

SEA

27h 25m

2 stops

$679Hainan Airlines

Thu, Mar 12 - Wed, Mar 25

11:45 am - 12:25 am

SEA

ICN

20h 40m

1 stop

1:40 pm - 10:05 am

ICN

SEA

36h 25m

1 stop

$690Cathay Pacific

Mon, Apr 13 - Sun, Apr 19

11:45 am - 12:25 am

SEA

ICN

20h 40m

1 stop

3:10 pm - 10:05 am

ICN

SEA

34h 55m

1 stop

$692Cathay Pacific

Thu, May 7 - Wed, May 13

9:50 am - 4:05 pm

PDX

ICN

14h 15m

1 stop

5:45 pm - 7:05 pm

ICN

PDX

17h 20m

1 stop

$793Air Canada

Mon, Apr 20 - Mon, May 11

5:00 am - 4:40 am

GEG

ICN

31h 40m

2 stops

4:50 pm - 12:41 pm

ICN

GEG

35h 51m

2 stops

$932United Airlines

Tue, Mar 24 - Tue, Mar 31

1:44 pm - 4:15 pm

GEG

ICN

33h 31m

2 stops

6:00 pm - 9:07 pm

ICN

GEG

20h 07m

1 stop

$974United Airlines

Sat, Feb 21 - Wed, Feb 25

7:55 am - 4:40 pm

PSC

ICN

16h 45m

1 stop

4:40 pm - 4:29 pm

ICN

PSC

15h 49m

1 stop

$1,403Korean Air

Fri, May 15 - Fri, Jun 5

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

Feb 12

SEA5:45 amSeattle/Tacoma Intl

17h 15m

1 stop

ICN4:00 pmIncheon Intl

Feb 17

ICN6:55 pmIncheon Intl

17h 21m

1 stop

SEA7:16 pmSeattle/Tacoma Intl

$731

Air Canada

Apr 6

SEA3:40 pmSeattle/Tacoma Intl

32h 25m

1 stop

ICN4:05 pmIncheon Intl

Nov 30

ICN6:55 pmIncheon Intl

31h 56m

1 stop

SEA9:51 amSeattle/Tacoma Intl

$733

Air Canada

Feb 24

SEA8:00 pmSeattle/Tacoma Intl

28h 10m

1 stop

ICN5:10 pmIncheon Intl

Mar 11

ICN5:55 pmIncheon Intl

13h 06m

1 stop

SEA3:01 pmSeattle/Tacoma Intl

$742

Hainan Airlines flights from State of Washington to Incheon Intl Airport

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

Hainan Airlines

Mar 12

SEA11:05 amSeattle/Tacoma Intl

41h 30m

2 stops

ICN8:35 pmIncheon Intl

Mar 25

ICN9:40 pmIncheon Intl

27h 25m

2 stops

SEA9:05 amSeattle/Tacoma Intl

$664

Hainan Airlines

Mar 12

SEA11:05 amSeattle/Tacoma Intl

41h 30m

2 stops

ICN8:35 pmIncheon Intl

Mar 25

ICN9:40 pmIncheon Intl

27h 25m

2 stops

SEA9:05 amSeattle/Tacoma Intl

$674

Hainan Airlines

Mar 12

SEA11:05 amSeattle/Tacoma Intl

41h 30m

2 stops

ICN8:35 pmIncheon Intl

Mar 25

ICN9:40 pmIncheon Intl

27h 25m

2 stops

SEA9:05 amSeattle/Tacoma Intl

$679

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

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 4/30

9:50 am-4:05 pm

1 stop14h 15m

Incheon Intl

Thu 5/28

8:40 pm-9:30 am

2 stops28h 50m

$656

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 3/12

11:05 am-8:35 pm

2 stops41h 30m

Incheon Intl

Wed 3/25

9:40 pm-9:05 am

2 stops27h 25m

$664

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 3/12

11:05 am-8:35 pm

2 stops41h 30m

Incheon Intl

Wed 3/25

9:40 pm-9:05 am

2 stops27h 25m

$674

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 3/12

11:05 am-8:35 pm

2 stops41h 30m

Incheon Intl

Wed 3/25

9:40 pm-9:05 am

2 stops27h 25m

$679

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/13

11:45 am-12:25 am

1 stop20h 40m

Incheon Intl

Sun 4/19

1:40 pm-10:05 am

1 stop36h 25m

$690

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 5/7

11:45 am-12:25 am

1 stop20h 40m

Incheon Intl

Wed 5/13

3:10 pm-10:05 am

1 stop34h 55m

$692

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 4/20

9:50 am-4:05 pm

1 stop14h 15m

Incheon Intl

Mon 5/11

5:45 pm-7:05 pm

1 stop17h 20m

$793

SpokaneIncheon

GEG - ICN

GEGICN

Spokane

Tue 3/24

5:00 am-4:40 am

2 stops31h 40m

Incheon Intl

Tue 3/31

4:50 pm-12:41 pm

2 stops35h 51m

$932

SpokaneIncheon

GEG - ICN

GEGICN

Spokane

Sat 2/21

1:44 pm-4:15 pm

2 stops33h 31m

Incheon Intl

Wed 2/25

6:00 pm-9:07 pm

1 stop20h 07m

$974

PascoIncheon

PSC - ICN

PSCICN

Pasco Tri Cities

Fri 5/15

7:55 am-4:40 pm

1 stop16h 45m

Incheon Intl

Fri 6/5

4:40 pm-4:29 pm

1 stop15h 49m

$1,403

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 April. Flight prices, which tend to average around $338, 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 April, then departing from State of Washington during the month August is also very affordable. Most momondo users find prices during this month for around $338.

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 Wednesday when prices can be found for as low as $692. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $940. 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 $711. 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 $916 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 $601 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	$358
Fastest flight time	11h 20m
Direct flights	Every day

The best one-way flight to Incheon Intl Airport from State of Washington in the past 72 hours is $358. The best round-trip flight deal from State of Washington to Incheon Intl Airport found on momondo in the last 72 hours is $675.

The fastest flight from State of Washington to Incheon Intl Airport takes 11h 20m

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 February 2026, 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 40.72% of all bookings. The subsequent popular models are Airbus A350-900 at 21.65%, Boeing 777-200/200ER at 13.73%, and Boeing 787-9 Dreamliner at 11.94%.

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 $212	Free Cancellation	Rating 7.9 8,173 reviews	Search Delta flights
United Airlines	PriceFrom $282	Free Cancellation	Rating 7.4 9,256 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $282	Free Cancellation	Rating 7.8 2,829 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $335	Free Cancellation	Rating 8.0 11,855 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom $531	Free Cancellation	Rating 7.1 10,698 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $710	Free Cancellation	Rating 8.1 505 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $843	Free Cancellation	Rating 8.4 1,189 reviews	Search Korean Air flights
China Airlines	PriceFrom $869	Free Cancellation	Rating 8.3 803 reviews	Search China Airlines flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,347 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $995	Free Cancellation	Rating 7.3 4,207 reviews	Search Turkish Airlines flights

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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.

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Flights to Seoul Gimpo Intl Airportfrom $749

Cheap flights from Washington to Seoul from $343

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 3/12. 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 State of Washington to Incheon Intl Airport

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

Hainan Airlines flights from State of Washington to Incheon Intl Airport

Our best Hainan 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

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?

Hainan Airlines, Asiana Airlines, and Air Canada 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 February 2026, 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 50% of flights taking off at noon.

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 57 per week as of February 2026. The most frequent departure day is Sat, 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.

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