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

Hainan Airlines is the most popular carrier operating from Washington to Seoul

How long does it take to fly to Seoul?

If you’re flying from a popular airport in State of Washington, such as Seattle or Pasco, and flying into Seoul, then you can expect flight times to average 11h 45m and 16h 50m, respectively.

How many flights depart from State of Washington to Seoul on average per day?

The number of flights available between State of Washington and Seoul is 8 per day as of November 2025. The most frequent departure time is 11:00AM, with 47% of daily flights leaving in the afternoon.

How many flights depart from State of Washington to Seoul on average per week?

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

What airlines fly to Seoul?

Korean Air, Asiana Airlines and Delta are the top three most popular airlines that fly to Seoul 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 Seoul. Keep in mind that there are 10 different airlines that fly to Seoul 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 Seoul?

Prices for flights from Washington to Seoul are updated daily.

How many operators does momondo search for flights from Washington to Seoul?

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

How old do you have to be to fly from Washington to Seoul?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Seoul.

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

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

$307 Cheap Flights from Washington to Seoul in 2025/26

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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

3:39 pm - 10:05 pmSEA-GMP

37h 26m2 stops

8:00 am - 2:34 pmGMP-SEA

23h 34m2 stops

$861Japan Airlines

Find Deal

Thu, Jan 29 - Wed, Feb 11

7:00 am - 10:05 pmSEA-GMP

22h 05m2 stops

8:00 am - 9:02 amGMP-SEA

42h 02m2 stops

$872Japan Airlines

Find Deal

Sat, Dec 6 - Mon, Dec 22

Hawaiian Airlines flights from State of Washington to Seoul

Our best Hawaiian Airlines deals on State of Washington to Seoul 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

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Air Canada flights from State of Washington to Seoul

Our best Air Canada deals on State of Washington to Seoul 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

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

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Thu 1/29

3:39 pm-10:05 pm

2 stops37h 26m

Seoul Gimpo Intl

Wed 2/11

8:00 am-2:34 pm

2 stops23h 34m

$861

SeattleSeoul

SEA - GMP

SEAGMP

Seattle/Tacoma Intl

Sat 12/6

7:00 am-10:05 pm

2 stops22h 05m

Seoul Gimpo Intl

Mon 12/22

8:00 am-9:02 am

2 stops42h 02m

$872

Flights are sorted by cheapest round-trip flights first.

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How to get the cheapest flight ticket from State of Washington to Seoul

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 Seoul?

The month of September is another great option to travel to Seoul, with average flight prices from State of Washington averaging around $902.

What is the cheapest day to depart on your flight to Seoul?

According to our data, Monday is the cheapest day to fly to Seoul from State of Washington. The lowest ticket price found for a Monday departure recently was $829. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Friday, with ticket prices averaging around $1,015.

What is the cheapest time of day to depart on your flight to Seoul?

Flying to Seoul from State of Washington in the evening is the least expensive time of day to depart. momondo users have found prices as low as $715 when looking at flights departing in the evening. In the afternoon is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,401 per ticket.

What is the cheapest Washington to Seoul flight route?

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

How far in advance should I book a flight to Seoul?

You are more likely to see cheaper flights to Seoul from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul 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 Seoul from State of Washington for as low as $929 on momondo.

What cabin class options are available on Washington to Seoul flights?

There are 3 cabin classes available to choose from on Washington to Seoul 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 Seoul flights?

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

Cheap State of Washington to Seoul flight deals and tips

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

Best Price Found	$379
Fastest flight time	11h 55m
Direct flights	Every day
Airports in Seoul	1 airport

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

The fastest flight from State of Washington to Seoul takes 11h 55m

Direct flights go from State of Washington to Seoul every day.

There is 1 airport near Seoul: Incheon Intl (ICN)

Search flight deals

When did momondo last update prices for flights from Washington to Seoul?
Prices for flights from Washington to Seoul are updated daily.
How many operators does momondo search for flights from Washington to Seoul?
As of November 2025, there are 10 operators available to choose from for flights from Washington to Seoul.
How old do you have to be to fly from Washington to Seoul?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Seoul.
What documentation or ID do you need to fly to Seoul?
The required travel and health documents for your Seoul 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 Seoul. 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 State of Washington to Seoul?
Based on momondo bookings for flights between State of Washington and Seoul, the leading plane model is Boeing 787-9 Dreamliner, making up 30.11% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 19.66%, Airbus A350-900 with 15.38%, and Boeing 787 Dreamliner with 8.51%.

Best airlines flying from State of Washington to Seoul

Compare and see reviews for airlines that fly from State of Washington to Seoul 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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Seoul for you.

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

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

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

momondo provides multiple filters to help you find the best flight to Seoul from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Yes. momondo can track prices for Washington to Seoul flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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Fly into one of these airports located in Seoul

Seoul Gimpo Intl Airport

Incheon Intl Airport

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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.

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Filter for what you want

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Hawaiian Airlines flights from State of Washington to Seoul

Our best Hawaiian Airlines deals on State of Washington to Seoul flight tickets

Air Canada flights from State of Washington to Seoul

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

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How to get the cheapest flight ticket from State of Washington to Seoul

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 Seoul?

The month of September is another great option to travel to Seoul, with average flight prices from State of Washington averaging around $902.

What is the cheapest day to depart on your flight to Seoul?

What is the cheapest time of day to depart on your flight to Seoul?

What is the cheapest Washington to Seoul flight route?

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

How far in advance should I book a flight to Seoul?

What cabin class options are available on Washington to Seoul flights?

There are 3 cabin classes available to choose from on Washington to Seoul 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 Seoul flights?

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

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

Hainan Airlines is the most popular carrier operating from Washington to Seoul

What airlines fly to Seoul?

How many flights depart from State of Washington to Seoul on average per day?

The number of flights available between State of Washington and Seoul is 8 per day as of November 2025. The most frequent departure time is 11:00AM, with 47% of daily flights leaving in the afternoon.

How many flights depart from State of Washington to Seoul on average per week?

The number of flights available between State of Washington and Seoul 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 Seoul?

If you’re flying from a popular airport in State of Washington, such as Seattle or Pasco, and flying into Seoul, then you can expect flight times to average 11h 45m and 16h 50m, respectively.

Cheap State of Washington to Seoul flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Seoul

When did momondo last update prices for flights from Washington to Seoul?

How many operators does momondo search for flights from Washington to Seoul?

How old do you have to be to fly from Washington to Seoul?

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

What is the most popular plane model from State of Washington to Seoul?

Best airlines flying from State of Washington to Seoul

Compare and see reviews for airlines that fly from State of Washington to Seoul with momondo

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 Seoul 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 South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul