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$317+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — SEA
Apr 20 — Apr 271
Mon 4/20
Mon 4/27
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 March 21, 2026.

This American Airlines deal was found by Cheapflights users on 3/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:50 pm
ICN
-
SEA
1 stop21h 14m
Multiple Airlines
Sat 8/295:59 pm
SEA
-
ICN
1 stop29h 46m
Multiple Airlines
Deal found 3/18$551
This Air Canada deal was found by Cheapflights users on 3/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:55 pm
ICN
-
SEA
1 stop16h 31m
Air Canada
Mon 11/167:05 pm
SEA
-
ICN
1 stop29h 05m
Air Canada
Deal found 3/17$563
This American Airlines deal was found by Cheapflights users on 3/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/155:50 pm
ICN
-
SEA
2 stops32h 24m
American Airlines
Sat 4/257:09 am
SEA
-
ICN
1 stop40h 36m
American Airlines
Deal found 3/18$573
This Air Canada deal was found by Cheapflights users on 3/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/46:55 pm
ICN
-
SEA
1 stop20h 01m
Air Canada
Tue 1/125:45 am
SEA
-
ICN
1 stop18h 25m
Air Canada
Deal found 3/18$585
This American Airlines deal was found by Cheapflights users on 3/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:50 pm
ICN
-
SEA
1 stop19h 36m
Multiple Airlines
Mon 4/275:51 pm
SEA
-
ICN
1 stop29h 54m
Multiple Airlines
Deal found 3/16$601
This American Airlines deal was found by Cheapflights users on 3/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/235:50 pm
ICN
-
SEA
1 stop19h 36m
Multiple Airlines
Thu 5/75:51 pm
SEA
-
ICN
1 stop29h 54m
Multiple Airlines
Deal found 3/21$603
This Air Canada deal was found by Cheapflights users on 3/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/265:45 pm
ICN
-
SEA
1 stop17h 35m
Air Canada
Thu 4/308:00 pm
SEA
-
ICN
1 stop28h 05m
Air Canada
Deal found 3/16$608
This Air Canada deal was found by Cheapflights users on 3/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:45 pm
ICN
-
SEA
1 stop16h 47m
Air Canada
Wed 10/213:00 pm
SEA
-
ICN
1 stop33h 05m
Air Canada
Deal found 3/19$616
This Air Canada deal was found by Cheapflights users on 3/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:45 pm
ICN
-
PDX
1 stop17h 20m
Air Canada
Tue 6/2310:10 am
PDX
-
ICN
1 stop13h 55m
Air Canada
Deal found 3/16$625
This Air Canada deal was found by Cheapflights users on 3/16. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:45 pm
ICN
-
PDX
1 stop17h 20m
Air Canada
Sat 6/207:45 pm
PDX
-
ICN
1 stop28h 20m
Air Canada
Deal found 3/16$672
This Air Canada deal was found by Cheapflights users on 3/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:45 pm
ICN
-
PDX
1 stop17h 20m
Air Canada
Tue 6/27:45 pm
PDX
-
ICN
1 stop28h 20m
Air Canada
Deal found 3/17$736
This Air Canada deal was found by Cheapflights users on 3/19. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:45 pm
ICN
-
PDX
2 stops21h 10m
Multiple Airlines
Thu 6/47:45 pm
PDX
-
ICN
1 stop28h 20m
Multiple Airlines
Deal found 3/19$742

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 March 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$551
(American Airlines)

One-way from

$317
(American Airlines)

Popular in

August

Cheapest in

November

Average price

$731

Good round-trip deal

$699 or less

Good one-way deal

$595 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. 11% potential increase in price ($84 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 21, 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
Quickest round-trip

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 4/24

7:35 pm-1:35 pm

Nonstop10h 00m

Seattle/Tacoma Intl

Mon 5/4

1:40 pm-5:30 pm

Nonstop11h 50m

$736

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 5/7

4:00 pm-7:55 pm

1 stop19h 55m

Seattle/Tacoma Intl

Thu 6/25

9:25 pm-5:20 pm

1 stop27h 55m

$759

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 4/24

7:35 pm-9:38 am

2 stops30h 03m

Portland

Tue 6/30

9:30 pm-5:30 pm

1 stop28h 00m

$759

IncheonSpokane

ICN - GEG

ICNGEG

Incheon Intl

Thu 4/23

7:35 pm-10:49 pm

2 stops43h 14m

Spokane

Mon 4/27

6:14 pm-5:30 pm

2 stops55h 16m

$784

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 4/24

7:00 pm-1:07 pm

Nonstop10h 07m

Seattle/Tacoma Intl

Mon 5/4

7:00 am-5:20 pm

1 stop18h 20m

$797

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 4/24

7:35 pm-7:34 pm

1 stop15h 59m

Portland

Mon 5/4

5:49 pm-5:30 pm

2 stops55h 41m

$801

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 4/28

7:00 pm-8:25 am

1 stop29h 25m

Portland

Thu 4/30

10:42 am-4:50 pm

1 stop14h 08m

$818

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 7/10

7:00 pm-1:41 pm

Nonstop10h 41m

Seattle/Tacoma Intl

Sat 7/18

7:20 am-4:40 am

1 stop29h 20m

$825

IncheonSpokane

ICN - GEG

ICNGEG

Incheon Intl

Wed 4/22

7:35 pm-11:11 pm

1 stop19h 36m

Spokane

Sat 4/25

7:09 am-5:30 pm

2 stops42h 21m

$839

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 4/28

4:50 pm-6:07 pm

1 stop17h 17m

Portland

Thu 4/30

7:15 am-4:20 am

1 stop29h 05m

$841

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/16

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, November is the cheapest month in which you can book a flight from Seoul to State of Washington (average of $338). Flying from Seoul to State of Washington in August is currently the most expensive (average of $660). 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 March 21, 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 March 21, 2026.

The most flights from SEL to USWA are scheduled on a Friday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

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

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 March 21, 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
1,205 reviews

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

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
1,205 reviews
Korean Air
8.4
Very good
1,205 reviews

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

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
506 reviews
Korean Air
8.4
Very good
1,205 reviews

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

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
12,092 reviews
Korean Air
8.4
Very good
1,205 reviews

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

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
7.9
Good
8,315 reviews
Korean Air
8.4
Very good
1,205 reviews

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

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
2,841 reviews
Korean Air
8.4
Very good
1,205 reviews

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Crew

8.7

Food

8.1

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 10h. 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?

    $309 is the cheapest one-way deal found within the past few days, from Hawaiian Airlines. You may also be able to find cheap deals on Air Canada and Asiana Airlines, with prices starting from $343 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 Alaska Airlines (80%), Hawaiian Airlines (80%) or Delta (66%) 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 $416. On average you can expect to pay $1,561. The most popular route, (Incheon Intl - Seattle/Tacoma Intl), can usually be booked for $700.

  • 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, November is the cheapest month in which you can book a flight from Seoul to State of Washington (average of $338). Flying from Seoul to State of Washington in August is currently the most expensive (average of $660). 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

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Top 8 airlines flying from Seoul to Washington

Discover the top 8 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 March 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$351Average$866FlexibilityNo cancel feeOn-time85%
Asiana AirlinesCheapest$466Average$628FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$470Average$726FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$472Average$517FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$476Average$583FlexibilityNo cancel feeOn-time75%
DeltaCheapest$485Average$714FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$516Average$646FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$583Average$638FlexibilityNo cancel feeOn-timeN/A

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