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$348+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — SEA
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This WhyPayMore deal was found by Cheapflights users on 1/28. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:55 pm
ICN
-
SEA
1 stop12h 51m
Air Canada
Tue 4/1410:10 am
SEA
-
ICN
1 stop13h 55m
Air Canada
Deal found 1/28$442
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:55 am
ICN
-
SEA
2 stops41h 20m
Multiple Airlines
Wed 6/105:40 am
SEA
-
ICN
1 stop18h 25m
Multiple Airlines
Deal found 1/28$443
This WhyPayMore deal was found by Cheapflights users on 1/29. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:45 pm
ICN
-
SEA
1 stop20h 25m
Air Canada
Sun 5/107:20 pm
SEA
-
ICN
1 stop28h 45m
Air Canada
Deal found 1/29$446
This Mytrip deal was found by Cheapflights users on 1/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/175:45 pm
ICN
-
SEA
1 stop20h 25m
Multiple Airlines
Mon 4/2710:10 am
SEA
-
ICN
2 stops19h 20m
Multiple Airlines
Deal found 1/26$449
This Mytrip deal was found by Cheapflights users on 1/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/295:45 pm
ICN
-
SEA
1 stop17h 33m
Air Canada
Mon 5/45:40 am
SEA
-
ICN
1 stop18h 25m
Air Canada
Deal found 1/27$450
This Mytrip deal was found by Cheapflights users on 1/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:55 am
ICN
-
SEA
2 stops22h 25m
Multiple Airlines
Fri 6/59:55 am
SEA
-
ICN
1 stop14h 10m
Multiple Airlines
Deal found 1/27$456
This Hanatour deal was found by Cheapflights users on 1/27. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/25:45 pm
ICN
-
SEA
1 stop12h 35m
Air Canada
Tue 6/167:20 pm
SEA
-
ICN
1 stop28h 45m
Air Canada
Deal found 1/27$459
This Air Canada deal was found by Cheapflights users on 1/26. 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 4/175:45 pm
ICN
-
SEA
1 stop17h 33m
Air Canada
Mon 4/2710:10 am
SEA
-
ICN
1 stop13h 55m
Air Canada
Deal found 1/26$462
This Mytrip deal was found by Cheapflights users on 1/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/289:00 am
ICN
-
SEA
2 stops26h 18m
Multiple Airlines
Sun 5/103:00 pm
SEA
-
ICN
2 stops38h 30m
Multiple Airlines
Deal found 1/29$465
This Air Canada deal was found by Cheapflights users on 1/28. 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 4/225:45 pm
ICN
-
SEA
1 stop13h 18m
Air Canada
Fri 5/85:40 am
SEA
-
ICN
1 stop18h 25m
Air Canada
Deal found 1/28$467
This WhyPayMore deal was found by Cheapflights users on 1/28. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:55 pm
ICN
-
PDX
1 stop31h 20m
Air Canada
Wed 5/277:45 pm
PDX
-
ICN
1 stop28h 20m
Air Canada
Deal found 1/28$506
This Mytrip deal was found by Cheapflights users on 1/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:10 pm
ICN
-
PDX
2 stops17h 30m
Multiple Airlines
Mon 3/239:50 am
PDX
-
ICN
1 stop14h 25m
Multiple Airlines
Deal found 1/28$530

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$442
(WhyPayMore)

One-way from

$348
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$744

Good round-trip deal

$700 or less

Good one-way deal

$633 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. 10% potential increase in price ($77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 29, 2026.
Use the filters below to find and compare flights from Seoul to Washington that are best for you.

Fly from

Seoul

Fly to

Washington

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 2/25

12:45 pm-11:30 pm

1 stop27h 45m

Seattle/Tacoma Intl

Wed 3/4

5:20 pm-5:40 am

1 stop19h 20m

$572

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 2/19

12:45 pm-6:26 pm

1 stop22h 41m

Seattle/Tacoma Intl

Tue 4/14

11:35 am-4:20 am

1 stop24h 45m

$572

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 2/26

6:00 pm-10:13 pm

2 stops21h 13m

Seattle/Tacoma Intl

Thu 3/5

8:45 am-5:40 am

2 stops27h 55m

$577

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 2/23

6:00 pm-11:30 pm

1 stop22h 30m

Seattle/Tacoma Intl

Sat 3/7

4:31 pm-3:15 pm

2 stops29h 44m

$584

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Mon 2/23

8:35 pm-1:37 pm

2 stops34h 02m

Portland

Fri 3/6

3:52 pm-6:35 pm

1 stop33h 43m

$598

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 3/2

6:00 pm-9:49 am

2 stops32h 49m

Seattle/Tacoma Intl

Sun 3/8

5:00 am-4:40 am

2 stops31h 40m

$601

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 2/28

6:00 pm-9:49 am

2 stops32h 49m

Seattle/Tacoma Intl

Sat 3/7

4:31 pm-3:15 pm

2 stops29h 44m

$607

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 4/7

7:00 pm-11:59 pm

1 stop20h 59m

Portland

Tue 4/21

6:05 pm-4:50 pm

1 stop30h 45m

$611

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Wed 3/4

7:15 pm-11:44 pm

2 stops21h 29m

Portland

Sun 3/15

11:59 pm-3:55 pm

1 stop23h 56m

$620

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 2/21

8:35 pm-10:56 am

2 stops31h 21m

Portland

Sat 2/28

7:57 pm-6:35 pm

1 stop29h 38m

$636

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 60 results
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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 $666). 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 January 29, 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 January 29, 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 January 29, 2026.
Peruse reviews from past customers who have flown with Korean Air, Asiana Airlines, and Alaska 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
1,188 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Comfort

8.3

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
1,188 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Comfort

8.3

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
501 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Comfort

8.3

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
8.0
Very good
11,808 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Comfort

8.3

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
8,127 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Comfort

8.3

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
2,830 reviews
Korean Air
8.4
Very good
1,188 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Crew

8.7

Entertainment

8.2

Comfort

8.3

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 popular is this Seoul to State of Washington flight route?

    Within the past month, 1 users have taken a look at flights from Seoul to Washington.

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

    Departing from Seoul to State of Washington will take you 20h 59m. Seoul and State of Washington are separated by a distance of 5273 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 $351 and $406, 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 Incheon Intl - Portland or Seoul Gimpo Intl - Seattle/Tacoma Intl.

  • 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 (74%), Korean Air (74%) or Alaska Airlines (67%) 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 $486. On average you can expect to pay $1,603. The most popular route, (Incheon Intl - Seattle/Tacoma Intl), can usually be booked for $443.

  • 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 $666). 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.

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Alternative routes for Seoul to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Seoul to Washington

Discover the top 5 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$351Average$866FlexibilityNo cancel feeOn-time85%
Asiana AirlinesCheapest$466Average$652FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$469Average$728FlexibilityNo cancel feeOn-time81%
Alaska AirlinesCheapest$476Average$583FlexibilityNo cancel feeOn-time75%
DeltaCheapest$606Average$667FlexibilityNo cancel feeOn-timeN/A

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