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 5 per day as of September 2025. The most frequent departure time is 12:00PM, with 100% of daily flights leaving in the afternoon.

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

WestJet, Alaska Airlines, and Asiana Airlines are the most popular carriers operating from Washington to Seoul

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 40 per week as of September 2025. The most frequent departure day is Thu, with 20% 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 40m and 17h 06m, respectively.

What airlines fly to Seoul?

Korean Air, Asiana Airlines and Air Canada 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 September 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.

$305 Cheap Flights from Washington to Seoul in 2025

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Find the cheapest flights from Washington to Seoul

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

11:23 am - 3:45 pmPDX-ICN

36h 22m2 stops

8:35 pm - 6:20 amICN-PDX

25h 45m1 stop

$708

Find Deal

Mon, Oct 6 - Fri, Oct 17

11:45 am - 4:50 amPDX-ICN

25h 05m2 stops

8:35 pm - 8:28 pmICN-PDX

15h 53m1 stop

$710

Find Deal

Mon, Oct 13 - Thu, Oct 23

9:17 am - 4:30 pmPDX-ICN

15h 13m1 stop

7:20 pm - 11:57 pmICN-PDX

20h 37m1 stop

$754Delta

Find Deal

Mon, Oct 6 - Thu, Oct 16

7:30 am - 6:35 pmPDX-ICN

18h 05m1 stop

8:35 pm - 6:49 pmICN-PDX

15h 14m1 stop

$756Alaska Airlines

Find Deal

Sun, Nov 2 - Sun, Nov 9

7:38 pm - 5:40 amPDX-ICN

17h 02m1 stop

6:00 pm - 9:26 pmICN-PDX

20h 26m2 stops

$759United Airlines

Find Deal

Mon, Nov 10 - Thu, Nov 20

5:50 pm - 4:30 pmPDX-ICN

30h 40m1 stop

7:20 pm - 7:19 pmICN-PDX

15h 59m1 stop

$760Delta

Find Deal

Sun, Oct 5 - Mon, Oct 13

10:00 am - 4:05 pmSEA-ICN

14h 05m1 stop

5:45 pm - 2:16 pmICN-SEA

12h 31m1 stop

$782Air Canada

Find Deal

Wed, Oct 1 - Wed, Oct 8

10:05 am - 5:10 pmSEA-ICN

14h 05m1 stop

6:55 pm - 2:31 pmICN-SEA

12h 36m1 stop

$786Air Canada

Find Deal

Thu, Nov 6 - Thu, Nov 20

7:00 am - 4:15 pmSEA-ICN

16h 15m1 stop

6:00 pm - 6:25 pmICN-SEA

17h 25m1 stop

$787United Airlines

Find Deal

Fri, Nov 7 - Tue, Nov 11

9:34 am - 6:35 pmPDX-ICN

17h 01m1 stop

8:35 pm - 12:09 amICN-PDX

20h 34m1 stop

$792Alaska Airlines

Find Deal

Fri, Oct 31 - Sat, Nov 15

United Airlines flights from State of Washington to Seoul

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

United Airlines

Nov 10

PDX7:38 pmPortland

17h 02m

1 stop

ICN5:40 amIncheon Intl

Nov 20

ICN6:00 pmIncheon Intl

20h 26m

2 stops

PDX9:26 pmPortland

$759

Find similar

United Airlines

Nov 7

SEA7:00 amSeattle/Tacoma Intl

16h 15m

1 stop

ICN4:15 pmIncheon Intl

Nov 11

ICN6:00 pmIncheon Intl

17h 25m

1 stop

SEA6:25 pmSeattle/Tacoma Intl

$787

Find similar

United Airlines

Sep 20

PDX3:46 pmPortland

31h 14m

1 stop

ICN3:00 pmIncheon Intl

Oct 6

ICN4:50 pmIncheon Intl

20h 00m

1 stop

PDX8:50 pmPortland

$830

Find similar

Delta flights from State of Washington to Seoul

Our best Delta deals on State of Washington to Seoul flight tickets

Delta

Oct 6

PDX9:17 amPortland

15h 13m

1 stop

ICN4:30 pmIncheon Intl

Oct 16

ICN7:20 pmIncheon Intl

20h 37m

1 stop

PDX11:57 pmPortland

$754

Find similar

Delta

Oct 5

PDX5:50 pmPortland

30h 40m

1 stop

ICN4:30 pmIncheon Intl

Oct 13

ICN7:20 pmIncheon Intl

15h 59m

1 stop

PDX7:19 pmPortland

$760

Find similar

Delta

Sep 21

SEA12:35 pmSeattle/Tacoma Intl

11h 55m

ICN4:30 pmIncheon Intl

Nov 4

ICN8:05 pmIncheon Intl

10h 15m

SEA1:20 pmSeattle/Tacoma Intl

$784

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 10/6

11:23 am-3:45 pm

2 stops36h 22m

Incheon Intl

Fri 10/17

8:35 pm-6:20 am

1 stop25h 45m

$708

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 10/13

11:45 am-4:50 am

2 stops25h 05m

Incheon Intl

Thu 10/23

8:35 pm-8:28 pm

1 stop15h 53m

$710

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 10/6

9:17 am-4:30 pm

1 stop15h 13m

Incheon Intl

Thu 10/16

7:20 pm-11:57 pm

1 stop20h 37m

$754

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 11/2

7:30 am-6:35 pm

1 stop18h 05m

Incheon Intl

Sun 11/9

8:35 pm-6:49 pm

1 stop15h 14m

$756

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 11/10

7:38 pm-5:40 am

1 stop17h 02m

Incheon Intl

Thu 11/20

6:00 pm-9:26 pm

2 stops20h 26m

$759

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 10/5

5:50 pm-4:30 pm

1 stop30h 40m

Incheon Intl

Mon 10/13

7:20 pm-7:19 pm

1 stop15h 59m

$760

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 10/1

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

Wed 10/8

5:45 pm-2:16 pm

1 stop12h 31m

$782

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 11/6

10:05 am-5:10 pm

1 stop14h 05m

Incheon Intl

Thu 11/20

6:55 pm-2:31 pm

1 stop12h 36m

$786

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 11/7

7:00 am-4:15 pm

1 stop16h 15m

Incheon Intl

Tue 11/11

6:00 pm-6:25 pm

1 stop17h 25m

$787

PortlandIncheon

PDX - ICN

PDXICN

Portland

Fri 10/31

9:34 am-6:35 pm

1 stop17h 01m

Incheon Intl

Sat 11/15

8:35 pm-12:09 am

1 stop20h 34m

$792

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 August is another great option to travel to Seoul, with average flight prices from State of Washington averaging around $930.

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 $856. 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 $1,028.

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 $727 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 $1,169 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 $986 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?

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

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	$372
Fastest flight time	11h 40m
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 $372. The best round-trip flight deal from State of Washington to Seoul found on momondo in the last 72 hours is $686.

The fastest flight from State of Washington to Seoul takes 11h 40m

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 September 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 24.23% of the total bookings. Other popular models include Boeing 787-10 Dreamliner with 23.94%, Airbus A350-900 with 17.91%, and Boeing 777-200LR with 12.74%.

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 7,960 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 8,937 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom $645	Free Cancellation	Rating 7.8 2,723 reviews	Search Hawaiian Airlines flights
Air Canada	PriceFrom $749	Free Cancellation	Rating 7.1 10,000 reviews	Search Air Canada flights
Asiana Airlines	PriceFrom $817	Free Cancellation	Rating 8.2 479 reviews	Search Asiana Airlines flights
Korean Air	PriceFrom $864	Free Cancellation	Rating 8.4 1,139 reviews	Search Korean Air flights
China Airlines	PriceFrom $886	Free Cancellation	Rating 8.3 767 reviews	Search China Airlines flights
EVA Air	PriceFrom $978	Free Cancellation	Rating 8.4 1,236 reviews	Search EVA Air flights
Turkish Airlines	PriceFrom $1,007	Free Cancellation	Rating 7.3 3,968 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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Seoul Gimpo Intl Airport

Incheon Intl Airport

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Cheap flights from Washington to Seoul from $305

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 11/17. 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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Big names and deals

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Filter for what you want

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United Airlines flights from State of Washington to Seoul

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

Delta flights from State of Washington to Seoul

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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 August is another great option to travel to Seoul, with average flight prices from State of Washington averaging around $930.

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?

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

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

WestJet, Alaska Airlines, and Asiana Airlines are the most popular carriers 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 5 per day as of September 2025. The most frequent departure time is 12:00PM, with 100% 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 40 per week as of September 2025. The most frequent departure day is Thu, with 20% 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 40m and 17h 06m, 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