How popular is this State of Washington to Seoul flight route?

Flights from Washington to Seoul have been viewed 200 times in the past calendar month.

How long is the flight from State of Washington to Seoul?

There are many flights that can get you from State of Washington to Seoul in 19h 35m. Fly via Delta, United Airlines, or Alaska Airlines to get the fastest option. There are 5273 mi between State of Washington and Seoul. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines to fly from State of Washington to Seoul one-way?

The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $424. However, be on the lookout for offers from Hawaiian Airlines and Alaska Airlines, as they are both options that can get you from State of Washington to Seoul for a low price.

In terms of precipitation, rainfall in Seoul ranges from 1.1 - 10.0 inches per month. July is typically the wettest month, when rainfall can reach 10.0 in. December is typically the driest time to visit Seoul when rainfall is around 1.1 in.

If weather is an important factor for your trip to Seoul, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

What are the most popular routes from State of Washington to Seoul?

When deciding which route to take from State of Washington to Seoul consider Seattle/Tacoma Intl - Incheon Intl, Seattle/Tacoma Intl - Seoul Gimpo Intl or Portland - Incheon Intl as they are the most popular.

What are the cheapest flights from State of Washington to Seoul?

While on average a flight from State of Washington to Seoul is generally $1,278, our data shows the cheapest flight currently is $336. When looking at the most popular route, (Seattle/Tacoma Intl - Incheon Intl), you can expect to pay $676 for that flight.

What are the most reliable airlines from State of Washington to Seoul?

Consider Delta (64%), Korean Air (61%) or Thai Airways (40%) when booking your flight. These represent the most reliable airlines when flying from State of Washington to Seoul.

What are the most popular airlines that fly from State of Washington to Seoul?

Consider Air Canada, Alaska Airlines or EVA Air when booking your flight. These represent the most popular airlines when flying from State of Washington to Seoul.

How far in advance should I book a flight from State of Washington to Seoul?

To save on the cost of your flight from State of Washington to Seoul, book at least 45 days before your planned departure. Booking around this time can save you about 13% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $854 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $970.

What is the cheapest month to fly from State of Washington to Seoul?

The best pricing can be found in the month of August. Prices to Seoul from State of Washington average $1,088. You can even find prices in August for less than $1,088, as users have found deals to Seoul from as low as $833. The month of June appears to be one of the more expensive times to travel to Seoul from State of Washington. Flying in the targeted month can save you up to 40%.

Can I find deals for flights from Washington to Seoul that include hotel bookings?

Yes. In addition to deals on Washington to Seoul flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington to Seoul?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Seoul.

Can I find deals for business class flights from Washington to Seoul?

Yes. Cheapflights offers flight deals from Washington to Seoul by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$293+ Cheap Flights from Washington to Seoul

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Cheap flight deals from Washington to Seoul

Round-trip from	$698 (Kiwi.com)
One-way from	$293 (Kiwi.com)
Popular in	June
Cheapest in	August
Average price	$929
Good round-trip deal	$678 or less
Good one-way deal	$370 or less

From Washington to Seoul (SEL)

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One-way flight from Washington to Seoul (SEL)

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Highest demand for flights based on searches. 17% potential increase in price ($236 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).

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Average for round-trip flights in September 2025

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Price to beat on a round-trip flight from Washington to Seoul (SEL).

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Price to beat on a one-way flight from Washington to Seoul (SEL).

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Find flight deals from Washington to Seoul

Cheapest flights from Washington to Seoul
Explore the most affordable flight options available from Washington to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Mon 10/611:23 amPDX - ICN

2 stops36h 22mMultiple Airlines

Wed 10/156:20 pmICN - PDX

1 stop14h 34mMultiple Airlines

Deal found 9/14

$698

Mon 10/69:30 pmPDX - ICN

1 stop26h 15mMultiple Airlines

Fri 10/108:45 pmICN - PDX

1 stop32h 20mMultiple Airlines

Deal found 9/14

$706

Mon 10/61:08 pmPDX - ICN

1 stop34h 37mMultiple Airlines

Thu 10/98:35 pmICN - PDX

1 stop15h 53mMultiple Airlines

Deal found 9/14

$712

Mon 10/611:23 amPDX - ICN

2 stops36h 22mMultiple Airlines

Sun 10/129:25 pmICN - PDX

1 stop17h 05mMultiple Airlines

Deal found 9/14

$719

Sat 11/110:08 amSEA - ICN

1 stop38h 02mMultiple Airlines

Sun 11/169:00 pmICN - SEA

Nonstop9h 55mMultiple Airlines

Deal found 9/15

$757

Thu 11/65:50 amSEA - ICN

1 stop18h 20mAir Canada

Tue 11/116:55 pmICN - SEA

1 stop17h 21mAir Canada

Deal found 9/15

$772

Sat 11/110:08 amSEA - ICN

1 stop38h 02mMultiple Airlines

Sat 11/89:20 pmICN - SEA

2 stops30h 03mMultiple Airlines

Deal found 9/15

$779

Sat 11/81:21 pmPDX - ICN

1 stop33h 49mMultiple Airlines

Thu 12/118:35 pmICN - PDX

1 stop17h 45mMultiple Airlines

Deal found 9/14

$781

Sun 9/285:30 amSEA - ICN

1 stop18h 35mAir Canada

Sun 10/55:45 pmICN - SEA

1 stop12h 31mAir Canada

Deal found 9/15

$782

Fri 11/73:26 pmPDX - ICN

2 stops31h 44mMultiple Airlines

Mon 12/88:35 pmICN - PDX

1 stop14h 20mMultiple Airlines

Deal found 9/14

$783

Fri 11/73:26 pmPDX - ICN

2 stops31h 44mMultiple Airlines

Thu 12/118:35 pmICN - PDX

1 stop17h 45mMultiple Airlines

Deal found 9/14

$784

Tue 9/237:00 amSEA - ICN

2 stops40h 45mMultiple Airlines

Sat 10/258:45 pmICN - SEA

1 stop33h 35mMultiple Airlines

Deal found 9/13

$785

Best flights from Washington to Seoul
Discover carefully curated flight deals from Washington to Seoul that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 15, 2025.

Fri 9/263:55 pmSEA - ICN

1 stop27h 20mDelta

Mon 10/278:05 pmICN - SEA

Nonstop10h 15mDelta

Deal found 9/12

$789

Sun 11/97:13 pmSEA - ICN

2 stops28h 02mUnited Airlines

Sun 11/2312:45 pmICN - SEA

3 stops25h 28mUnited Airlines

Deal found 9/12

$803

Sun 11/911:00 amSEA - ICN

Nonstop11h 55mKorean Air

Sun 11/164:10 pmICN - SEA

Nonstop9h 50mKorean Air

Deal found 9/13

$831

Sun 11/912:10 amSEA - ICN

Nonstop12h 10mAsiana Airlines

Mon 12/89:00 pmICN - SEA

Nonstop9h 55mAsiana Airlines

Deal found 9/14

$831

Sun 11/166:00 amPDX - ICN

1 stop19h 35mAlaska Airlines

Mon 12/18:35 pmICN - PDX

1 stop20h 43mAlaska Airlines

Deal found 9/15

$892

Sat 10/2511:59 pmPDX - ICN

1 stop23h 56mAmerican Airlines

Mon 11/107:15 pmICN - PDX

1 stop21h 11mAmerican Airlines

Deal found 9/15

$892

Tue 9/238:08 pmSEA - GMP

2 stops33h 42mMultiple Airlines

Thu 10/3012:05 pmGMP - SEA

2 stops27h 01mMultiple Airlines

Deal found 9/13

$933

Wed 11/126:05 amSEA - GMP

2 stops23h 00mJapan Airlines

Tue 11/188:00 amGMP - SEA

2 stops31h 24mJapan Airlines

Deal found 9/12

$951

Sat 1/249:00 amPSC - ICN

1 stop16h 35mHawaiian Airlines

Sat 1/318:35 pmICN - PSC

1 stop17h 21mHawaiian Airlines

Deal found 9/13

$979

Mon 10/208:15 pmSEA - GMP

2 stops31h 00mEVA Air

Wed 10/298:15 pmGMP - SEA

2 stops32h 47mEVA Air

Deal found 9/13

$1,120

Wed 11/123:40 pmSEA - GMP

1 stop26h 40mANA

Sun 11/2312:25 pmGMP - SEA

1 stop17h 55mANA

Deal found 9/12

$1,185

Thu 11/2711:00 amSEA - ICN

Nonstop11h 55mDelta

Thu 12/44:10 pmICN - SEA

Nonstop9h 50mDelta

Deal found 9/12

$822

Last-minute flights from Washington to Seoul
Discover last-minute flight deals from Washington to Seoul. Data last updated September 15, 2025 and is based on user searches.

Tue 9/237:00 amSEA - ICN

2 stops40h 45mMultiple Airlines

Sat 10/258:45 pmICN - SEA

1 stop33h 35mMultiple Airlines

Deal found 9/13

$785

Sat 9/277:37 pmSEA - ICN

1 stop16h 43mUnited Airlines

Thu 10/94:50 pmICN - SEA

1 stop15h 34mUnited Airlines

Deal found 9/12

$787

Sun 9/285:30 amSEA - ICN

1 stop18h 35mAir Canada

Sun 10/55:45 pmICN - SEA

1 stop12h 31mAir Canada

Deal found 9/15

$782

Sun 10/52:55 pmSEA - ICN

Nonstop11h 40mAlaska Airlines

Mon 10/138:35 pmICN - SEA

Nonstop10h 00mAlaska Airlines

Deal found 9/13

$788

Mon 10/611:23 amPDX - ICN

2 stops36h 22mMultiple Airlines

Wed 10/156:20 pmICN - PDX

1 stop14h 34mMultiple Airlines

Deal found 9/14

$698

Mon 10/61:08 pmPDX - ICN

1 stop34h 37mMultiple Airlines

Mon 10/136:20 pmICN - PDX

1 stop21h 12mMultiple Airlines

Deal found 9/14

$705

Mon 10/69:30 pmPDX - ICN

1 stop26h 15mMultiple Airlines

Fri 10/108:45 pmICN - PDX

1 stop32h 20mMultiple Airlines

Deal found 9/14

$706

Mon 10/61:08 pmPDX - ICN

1 stop34h 37mMultiple Airlines

Thu 10/98:35 pmICN - PDX

1 stop15h 53mMultiple Airlines

Deal found 9/14

$712

Mon 10/611:23 amPDX - ICN

2 stops36h 22mMultiple Airlines

Sun 10/129:25 pmICN - PDX

1 stop17h 05mMultiple Airlines

Deal found 9/14

$719

Sun 10/1212:43 pmPDX - ICN

2 stops48h 07mMultiple Airlines

Wed 10/226:20 pmICN - PDX

1 stop14h 34mMultiple Airlines

Deal found 9/14

$781

Sun 10/1212:43 pmPDX - ICN

2 stops48h 07mMultiple Airlines

Thu 10/238:35 pmICN - PDX

1 stop15h 53mMultiple Airlines

Deal found 9/14

$788

Fri 10/1711:10 pmSEA - ICN

2 stops28h 30mMultiple Airlines

Tue 10/216:20 pmICN - SEA

Nonstop10h 10mMultiple Airlines

Deal found 9/12

$786

One-way flights from Washington to Seoul
Search for one-way flight options from Washington to Seoul. Find affordable one-way fares based on user searches. Data last updated September 15, 2025.

Sun 11/169:03 amSEA - ICN

1 stop38h 07mMultiple Airlines

Deal found 9/13

$293

Mon 10/61:47 pmSEA - ICN

2 stops33h 58mMultiple Airlines

Deal found 9/14

$318

Sat 11/157:17 pmSEA - ICN

2 stops51h 53mMultiple Airlines

Deal found 9/13

$327

Thu 10/161:11 pmSEA - ICN

3 stops37h 34mMultiple Airlines

Deal found 9/14

$345

Thu 10/233:57 pmSEA - ICN

3 stops34h 48mMultiple Airlines

Deal found 9/13

$348

Mon 10/271:02 pmSEA - ICN

1 stop24h 18mMultiple Airlines

Deal found 9/14

$349

Wed 10/151:11 pmSEA - ICN

3 stops37h 34mMultiple Airlines

Deal found 9/13

$350

Thu 9/257:22 pmPDX - ICN

2 stops52h 23mMultiple Airlines

Deal found 9/15

$409

Tue 9/238:06 amPDX - ICN

2 stops39h 39mMultiple Airlines

Deal found 9/14

$410

Mon 11/249:48 pmPDX - ICN

2 stops52h 37mMultiple Airlines

Deal found 9/15

$413

Mon 9/2211:23 amPDX - ICN

2 stops36h 22mMultiple Airlines

Deal found 9/14

$425

Sun 10/1211:35 pmSEA - GMP

3 stops45h 50mMultiple Airlines

Deal found 9/13

$427

Fly from

Fly to

Route

Depart

Return

Price

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 9/26

3:55 pm-11:15 am

1 stop27h 20m

Incheon Intl

Mon 10/27

8:05 pm-2:20 pm

Nonstop10h 15m

$789

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 11/9

7:13 pm-4:15 pm

2 stops28h 02m

Incheon Intl

Sun 11/23

12:45 pm-9:13 pm

3 stops25h 28m

$803

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 11/27

11:00 am-3:55 pm

Nonstop11h 55m

Incheon Intl

Thu 12/4

4:10 pm-9:00 am

Nonstop9h 50m

$822

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 10/23

12:15 pm-4:30 pm

Nonstop12h 15m

Incheon Intl

Tue 10/28

8:05 pm-2:20 pm

Nonstop10h 15m

$830

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 10/24

12:15 pm-4:30 pm

Nonstop12h 15m

Incheon Intl

Tue 10/28

8:05 pm-2:20 pm

Nonstop10h 15m

$830

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 10/29

12:10 pm-4:30 pm

Nonstop12h 20m

Incheon Intl

Sun 11/9

8:05 pm-1:20 pm

Nonstop10h 15m

$830

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 10/22

12:15 pm-4:30 pm

Nonstop12h 15m

Incheon Intl

Mon 10/27

8:05 pm-2:20 pm

Nonstop10h 15m

$830

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 11/9

11:00 am-3:55 pm

Nonstop11h 55m

Incheon Intl

Sun 11/16

4:10 pm-9:00 am

Nonstop9h 50m

$831

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 11/9

12:10 am-5:20 am

Nonstop12h 10m

Incheon Intl

Mon 12/8

9:00 pm-1:55 pm

Nonstop9h 55m

$831

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 11/16

6:00 am-6:35 pm

1 stop19h 35m

Incheon Intl

Mon 12/1

8:35 pm-12:18 am

1 stop20h 43m

$892

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results

...

Best time to book a flight from Washington to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Washington with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Seoul

What is the cheapest month to book a flight from State of Washington to Seoul?

Currently, February is the cheapest month in which you can book a flight from State of Washington to Seoul (average of $990). Flying from State of Washington to Seoul in December is currently the most expensive (average of $1,633). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to SEL?

When flying from State of Washington to Seoul, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from State of Washington to Seoul

The most flights from USWA to SEL are scheduled on a Thursday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (6 on average).

Related info for your journey

How popular is this State of Washington to Seoul flight route?
Flights from Washington to Seoul have been viewed 200 times in the past calendar month.
How long is the flight from State of Washington to Seoul?
There are many flights that can get you from State of Washington to Seoul in 19h 35m. Fly via Delta, United Airlines, or Alaska Airlines to get the fastest option. There are 5273 mi between State of Washington and Seoul. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines to fly from State of Washington to Seoul one-way?
The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $424. However, be on the lookout for offers from Hawaiian Airlines and Alaska Airlines, as they are both options that can get you from State of Washington to Seoul for a low price.
What are the most popular routes from State of Washington to Seoul?
When deciding which route to take from State of Washington to Seoul consider Seattle/Tacoma Intl - Incheon Intl, Seattle/Tacoma Intl - Seoul Gimpo Intl or Portland - Incheon Intl as they are the most popular.
What are the most reliable airlines from State of Washington to Seoul?
Consider Delta (64%), Korean Air (61%) or Thai Airways (40%) when booking your flight. These represent the most reliable airlines when flying from State of Washington to Seoul.
What are the cheapest flights from State of Washington to Seoul?
While on average a flight from State of Washington to Seoul is generally $1,278, our data shows the cheapest flight currently is $336. When looking at the most popular route, (Seattle/Tacoma Intl - Incheon Intl), you can expect to pay $676 for that flight.
Can I find deals for flights from Washington to Seoul that include hotel bookings?
Yes. In addition to deals on Washington to Seoul flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington to Seoul?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Seoul.
Can I find deals for business class flights from Washington to Seoul?
Yes. Cheapflights offers flight deals from Washington to Seoul by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from State of Washington to Seoul?
Currently, February is the cheapest month in which you can book a flight from State of Washington to Seoul (average of $990). Flying from State of Washington to Seoul in December is currently the most expensive (average of $1,633). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from Washington to Seoul

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$167	Average$1,256	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$182	Average$998	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$282	Average$865	FlexibilityNo cancel fee	On-time69%
Hawaiian Airlines	Cheapest$645	Average$1,218	FlexibilityNo cancel fee	On-time85%
Air Canada	Cheapest$738	Average$912	FlexibilityNo cancel fee	On-time67%
Asiana Airlines	Cheapest$811	Average$1,119	FlexibilityNo cancel fee	On-time76%
Korean Air	Cheapest$863	Average$1,515	FlexibilityNo cancel fee	On-time81%
China Airlines	Cheapest$886	Average$1,070	FlexibilityNo cancel fee	On-time70%
EVA Air	Cheapest$978	Average$1,089	FlexibilityNo cancel fee	On-time74%
Turkish Airlines	Cheapest$1,007	Average$1,247	FlexibilityNo cancel fee	On-time77%

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$293+ Cheap flights from Washington to Seoul (SEL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/16. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Washington to Seoul

Keep the following information in mind while searching for Washington to Seoul flight deals. Data was last updated September 15, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Washington to Seoul

Cheapest flights from Washington to SeoulExplore the most affordable flight options available from Washington to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Explore the most affordable flight options available from Washington to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Washington to Seoul

Have a flexible travel schedule? Discover the best time to fly to Seoul from Washington with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington to Seoul

What is the cheapest month to book a flight from State of Washington to Seoul?

What is the cheapest time of day to fly from WA to SEL?

Find hourly flight availability from Washington to Seoul. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Weekly flight availability from State of Washington to Seoul

Explore weekly flight availability from Washington to Seoul. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 15, 2025.

Related info for your journey

Find useful and relevant information for your journey from Washington to Seoul. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How popular is this State of Washington to Seoul flight route?

How long is the flight from State of Washington to Seoul?

What are the cheapest airlines to fly from State of Washington to Seoul one-way?

What are the most popular routes from State of Washington to Seoul?

What are the most reliable airlines from State of Washington to Seoul?

What are the cheapest flights from State of Washington to Seoul?

Can I find deals for flights from Washington to Seoul that include hotel bookings?

How can I find direct flights from Washington to Seoul?

Can I find deals for business class flights from Washington to Seoul?

What is the cheapest month to book a flight from State of Washington to Seoul?

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Alternative routes for Washington to Seoul

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Top 10 airlines flying from Washington to Seoul

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Cheapest flights from Washington to Seoul
Explore the most affordable flight options available from Washington to Seoul. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.