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$313+ 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — SEA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Seoul to Washington

Keep the following information in mind while searching for Seoul to Washington flight deals. Data was last updated September 16, 2025.

Round-trip from

$329
(Trip.com)

One-way from

$313
(Kiwi.com)

Popular in

August

Cheapest in

June

Average price

$694

Good round-trip deal

$557 or less

Good one-way deal

$458 or less
From Seoul (SEL) to Washington
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One-way flight from Seoul (SEL) to Washington
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Highest demand for flights based on searches. 7% potential increase in price ($56 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 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 Seoul (SEL) to Washington.
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Price to beat on a one-way flight from Seoul (SEL) to Washington.
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Find 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 September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/14. 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 9/158:35 pmICN - PDX
1 stop18h 12mHawaiian Airlines
Sun 9/286:05 amPDX - ICN
1 stop20h 30mHawaiian Airlines
Deal found 9/14$329
This Trip.com deal was found by Cheapflights users on 9/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:35 pmICN - PDX
1 stop18h 10mHawaiian Airlines
Sun 10/197:20 amPDX - ICN
1 stop19h 15mHawaiian Airlines
Deal found 9/16$330
This Jetabroad deal was found by Cheapflights users on 9/15. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/249:25 pmICN - PDX
1 stop24h 35mHawaiian Airlines
Tue 11/47:09 amPDX - ICN
1 stop19h 16mHawaiian Airlines
Deal found 9/15$338
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:35 pmICN - PDX
1 stop28h 25mAlaska Airlines
Sun 10/196:00 amPDX - ICN
1 stop20h 35mAlaska Airlines
Deal found 9/16$339
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:35 pmICN - PDX
1 stop18h 10mHawaiian Airlines
Sat 10/255:50 pmPDX - ICN
1 stop33h 35mHawaiian Airlines
Deal found 9/15$342
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/229:25 pmICN - PDX
1 stop17h 05mAlaska Airlines
Tue 11/47:09 amPDX - ICN
1 stop19h 16mAlaska Airlines
Deal found 9/14$347
This Jetabroad deal was found by Cheapflights users on 9/15. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:35 pmICN - PDX
1 stop16h 02mAlaska Airlines
Thu 11/65:30 pmPDX - ICN
1 stop32h 05mAlaska Airlines
Deal found 9/15$351
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/238:35 pmICN - PDX
1 stop25h 45mAlaska Airlines
Fri 11/75:40 pmPDX - ICN
1 stop32h 45mAlaska Airlines
Deal found 9/14$369
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/229:25 pmICN - PDX
1 stop17h 05mAlaska Airlines
Fri 11/75:40 pmPDX - ICN
1 stop32h 45mAlaska Airlines
Deal found 9/14$380
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/248:35 pmICN - PDX
2 stops28h 52mAlaska Airlines
Tue 11/47:09 amPDX - ICN
1 stop19h 16mAlaska Airlines
Deal found 9/15$414
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/208:35 pmICN - PDX
1 stop15h 53mAlaska Airlines
Sat 10/2510:00 pmPDX - ICN
2 stops29h 25mAlaska Airlines
Deal found 9/15$421
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/39:25 pmICN - SEA
1 stop25h 10mAlaska Airlines
Fri 11/77:59 pmSEA - ICN
2 stops30h 26mAlaska Airlines
Deal found 9/16$458

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 September 16, 2025.
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

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 10/31

8:35 pm-8:37 pm

1 stop16h 02m

Portland

Fri 11/7

3:30 pm-6:35 pm

1 stop34h 05m

$330

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 10/10

8:35 pm-9:00 am

1 stop28h 25m

Portland

Sun 10/19

6:00 am-6:35 pm

1 stop20h 35m

$339

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Thu 10/16

8:35 pm-6:20 am

1 stop25h 45m

Portland

Thu 10/23

2:30 pm-6:35 pm

1 stop36h 05m

$339

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 10/25

8:35 pm-6:17 am

1 stop25h 42m

Portland

Sun 11/2

7:30 am-6:35 pm

1 stop18h 05m

$339

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Wed 10/22

9:25 pm-10:30 pm

1 stop17h 05m

Portland

Tue 11/4

7:09 am-7:25 pm

1 stop19h 16m

$347

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Thu 10/23

8:35 pm-6:20 am

1 stop25h 45m

Portland

Fri 11/7

5:40 pm-7:25 pm

1 stop32h 45m

$369

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 10/24

8:35 pm-10:45 pm

1 stop18h 10m

Portland

Sat 11/8

10:28 pm-7:25 pm

2 stops27h 57m

$421

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Mon 10/20

8:35 pm-10:45 pm

1 stop18h 10m

Portland

Sat 10/25

10:00 pm-7:25 pm

2 stops29h 25m

$421

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Mon 10/27

9:25 pm-5:34 am

1 stop24h 09m

Portland

Sun 11/2

5:00 am-6:25 pm

2 stops20h 25m

$449

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 10/25

8:35 pm-12:14 am

1 stop19h 39m

Portland

Sun 11/2

5:00 am-6:25 pm

2 stops20h 25m

$449

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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, January is the cheapest month in which you can book a flight from Seoul to State of Washington (average of $238). Flying from Seoul to State of Washington in June is currently the most expensive (average of $387). 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 September 16, 2025.

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 September 16, 2025.

The most flights from SEL to USWA are scheduled on a Monday (10 on average). You will have fewer flight options on Wednesday, 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 September 16, 2025.
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
1,140 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

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
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

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
8.2
Very good
480 reviews
Korean Air
8.4
Very good
1,140 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

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
10,000 reviews
Korean Air
8.4
Very good
1,140 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

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
8.0
Very good
7,957 reviews
Korean Air
8.4
Very good
1,140 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

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!!
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,140 reviews

Overall

8.4

Comfort

8.3

Entertainment

8.2

Food

8.1

Boarding

8.5

Crew

8.7

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 10h 15m. 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?

    $364 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Asiana Airlines and WestJet, with prices starting from $369 and $391, 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 (37%), Korean Air (37%) or Alaska Airlines (33%) 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 $276. On average you can expect to pay $1,526. The most popular route, (Incheon Intl - Seattle/Tacoma Intl), can usually be booked for $327.

  • 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, January is the cheapest month in which you can book a flight from Seoul to State of Washington (average of $238). Flying from Seoul to State of Washington in June is currently the most expensive (average of $387). 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 7 airlines flying from Seoul to Washington

Discover the top 7 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$472Average$727FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$488Average$572FlexibilityNo cancel feeOn-time75%
Asiana AirlinesCheapest$492Average$716FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$508Average$795FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$516Average$646FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$592Average$868FlexibilityNo cancel feeOn-time85%
DeltaCheapest$623Average$744FlexibilityNo cancel feeOn-timeN/A

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