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$436+ Cheap flights from Seoul (SEL) to Washington

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — SEA
Aug 3 — Aug 101
Mon 8/3
Mon 8/10
1 adult, Economy
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Cheap flight deals from Seoul to Washington

Cheapest flights from Seoul to Washington
Explore the most affordable flight options available from Seoul to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/57:35 pm
ICN
-
SEA
Nonstop10h 30m
Multiple Airlines
Fri 8/2810:30 am
SEA
-
ICN
1 stop16h 15m
Multiple Airlines
Deal found 7/1$641
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:35 pm
ICN
-
SEA
Nonstop10h 30m
Multiple Airlines
Sun 8/2310:30 am
SEA
-
ICN
1 stop16h 15m
Multiple Airlines
Deal found 7/1$650
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:35 pm
ICN
-
SEA
Nonstop10h 30m
Multiple Airlines
Wed 7/227:12 am
SEA
-
ICN
1 stop22h 28m
Multiple Airlines
Deal found 7/1$716
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:35 pm
ICN
-
SEA
Nonstop10h 30m
Multiple Airlines
Tue 8/2512:25 pm
SEA
-
ICN
1 stop20h 00m
Multiple Airlines
Deal found 7/1$731
This Cheapflightsfares deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/237:20 am
ICN
-
SEA
1 stop28h 45m
Philippine Airlines
Thu 8/2711:10 pm
SEA
-
ICN
1 stop28h 05m
Philippine Airlines
Deal found 7/3$733
This Cheapflightsfares deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:20 am
ICN
-
SEA
1 stop28h 15m
Philippine Airlines
Mon 11/911:55 pm
SEA
-
ICN
1 stop26h 20m
Philippine Airlines
Deal found 7/2$757
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/87:35 pm
ICN
-
SEA
Nonstop10h 30m
Multiple Airlines
Tue 7/1412:10 am
SEA
-
ICN
Nonstop11h 50m
Multiple Airlines
Deal found 7/1$761
This YBTour deal was found by Cheapflights users on 7/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/68:30 pm
ICN
-
SEA
1 stop39h 35m
Philippine Airlines
Tue 7/1411:10 pm
SEA
-
ICN
1 stop28h 05m
Philippine Airlines
Deal found 7/2$763
This YBTour deal was found by Cheapflights users on 7/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/88:30 pm
ICN
-
SEA
1 stop39h 35m
Philippine Airlines
Sun 8/3011:10 pm
SEA
-
ICN
1 stop28h 05m
Philippine Airlines
Deal found 7/3$767
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:10 am
ICN
-
SEA
1 stop20h 05m
Multiple Airlines
Wed 8/2610:30 am
SEA
-
ICN
1 stop16h 15m
Multiple Airlines
Deal found 7/1$769
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:40 pm
ICN
-
SEA
2 stops54h 35m
Multiple Airlines
Sat 7/41:30 pm
SEA
-
ICN
1 stop32h 45m
Multiple Airlines
Deal found 7/1$773
This Kiwi.com deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/247:15 pm
ICN
-
PDX
1 stop34h 20m
Multiple Airlines
Sat 10/319:33 pm
PDX
-
ICN
1 stop30h 57m
Multiple Airlines
Deal found 7/1$965

Find flight deals from Seoul to Washington

Keep the following information in mind while searching for Seoul to Washington flight deals. Data was last updated July 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$733
(Cheapflightsfares)

One-way from

$436
(Cheapflightsfares)

Popular in

June

Cheapest in

November

Average price

$921

Good round-trip deal

$1,213 or less

Good one-way deal

$655 or less
Provider with most accurate pricing for Seoul (SEL)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seoul (SEL)-Seattle/Tacoma Intl flights.
Search Deals
From Seoul (SEL) to Washington
Search Deals
One-way flight from Seoul (SEL) to Washington
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($181 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Seoul (SEL) to Washington.
Search Deals
Price to beat on a one-way flight from Seoul (SEL) to Washington.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seoul to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 4, 2026.
Use the filters below to find and compare flights from Seoul to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 12/19

8:30 pm-7:35 pm

1 stop40h 05m

Seattle/Tacoma Intl

Mon 12/28

11:55 pm-5:55 am

1 stop37h 00m

$831
Quickest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 12/25

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Sat 12/26

12:10 am-5:20 am

Nonstop12h 10m

$832

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 8/20

11:30 am-12:20 pm

1 stop16h 50m

Seattle/Tacoma Intl

Tue 8/25

1:16 pm-4:20 am

1 stop23h 04m

$902

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 12/25

8:00 pm-1:10 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Sat 12/26

12:40 pm-5:35 pm

Nonstop11h 55m

$936

IncheonSpokane

ICN - GEG

ICNGEG

Incheon Intl

Thu 8/27

7:35 pm-10:38 pm

2 stops43h 03m

Spokane

Sat 9/12

4:26 pm-5:30 pm

2 stops33h 04m

$993

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 8/15

7:35 pm-11:56 pm

2 stops20h 21m

Portland

Thu 9/17

3:33 pm-5:30 pm

2 stops33h 57m

$1,049

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Thu 8/27

7:35 pm-9:25 am

2 stops29h 50m

Portland

Sun 9/27

8:18 pm-5:30 pm

2 stops29h 12m

$1,084

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Thu 8/27

7:35 pm-11:59 pm

2 stops20h 24m

Portland

Wed 10/28

9:30 pm-5:35 pm

2 stops28h 05m

$1,095

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 8/28

7:35 pm-9:25 am

2 stops29h 50m

Portland

Fri 10/30

9:30 pm-5:35 pm

2 stops28h 05m

$1,095

IncheonSpokane

ICN - GEG

ICNGEG

Incheon Intl

Wed 8/26

7:35 pm-10:38 pm

2 stops19h 03m

Spokane

Sat 9/12

4:26 pm-5:30 pm

2 stops33h 04m

$1,105

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Seoul to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Seoul 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 Seoul to Washington

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

Currently, August is the cheapest month in which you can book a flight from Seoul to State of Washington (average of $143). Flying from Seoul to State of Washington in October is currently the most expensive (average of $1,045). 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 SEL to WA?

Find hourly flight availability from Seoul to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 4, 2026.

When flying from Seoul to State of Washington, 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 Seoul to State of Washington

Explore weekly flight availability from Seoul to Washington. 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 July 4, 2026.

The most flights from SEL to USWA are scheduled on a Thursday (9 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (5 on average).

How much does it cost to fly round-trip from Seoul to State of Washington?

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

Booking 9 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seoul to State of Washington. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated July 4, 2026.
Peruse reviews from past customers who have flown with Korean Air,Asiana Airlines, andAlaska Airlines from Seoul to Washington to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,220 reviews
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.1
Very good
550 reviews
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Alaska Airlines
7.9
Good
12,617 reviews
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Delta
7.8
Good
8,454 reviews
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Hawaiian Airlines
7.8
Good
2,825 reviews
Korean Air
8.4
Very good
1,220 reviews

Food

8.1

Boarding

8.5

Crew

8.7

Comfort

8.3

Entertainment

8.2

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

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

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

    Departing from Seoul to State of Washington will take you 9h 55m. Seoul and State of Washington are separated by a distance of 5200 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $343 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Hawaiian Airlines and Asiana Airlines, with prices starting from $373 and $402, respectively.

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

    The most popular route from Seoul to State of Washington is Incheon Intl - Seattle/Tacoma Intl. You may also consider Seoul Gimpo Intl - Seattle/Tacoma Intl or Incheon Intl - Portland.

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

    No one likes to see their flight delayed. When booking a flight from Seoul to State of Washington consider choosing Delta (90%), Korean Air (90%) or Thai Airways (58%) as they are the most reliable in getting you off to your destination on time.

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

    The cheapest flight price from Seoul to State of Washington is $543. On average you can expect to pay $1,879. The most popular route, (Incheon Intl - Seattle/Tacoma Intl), can usually be booked for $716.

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

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

  • How can I find direct flights from Seoul to Washington?

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

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

    Yes. Cheapflights offers flight deals from Seoul to Washington 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 Seoul to State of Washington?

    Currently, August is the cheapest month in which you can book a flight from Seoul to State of Washington (average of $143). Flying from Seoul to State of Washington in October is currently the most expensive (average of $1,045). 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

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Top 6 airlines flying from Seoul to Washington

Discover the top 6 airlines that operate flights from Seoul to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$351Average$866FlexibilityNo cancel feeOn-time85%
Korean AirCheapest$468Average$747FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$472Average$518FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$476Average$663FlexibilityNo cancel feeOn-time75%
DeltaCheapest$484Average$728FlexibilityNo cancel feeOn-timeN/A
Asiana AirlinesCheapest$512Average$623FlexibilityNo cancel feeOn-time76%

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