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$289+ 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 2/17. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — SEA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 December 18, 2025.

This WhyPayMore deal was found by Cheapflights users on 12/16. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:55 pmICN - SEA
1 stop31h 36mAir Canada
Mon 1/55:50 amSEA - ICN
1 stop18h 20mAir Canada
Deal found 12/16$546
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2312:45 pmICN - SEA
1 stop21h 07mUnited Airlines
Sat 1/246:03 amSEA - ICN
1 stop17h 12mUnited Airlines
Deal found 12/15$558
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:45 pmICN - SEA
1 stop29h 05mUnited Airlines
Thu 1/85:12 pmSEA - ICN
2 stops30h 03mUnited Airlines
Deal found 12/16$559
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/176:00 pmICN - SEA
2 stops39h 24mUnited Airlines
Sat 2/287:29 pmSEA - ICN
1 stop27h 46mUnited Airlines
Deal found 12/16$560
This United Airlines deal was found by Cheapflights users on 12/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2212:45 pmICN - SEA
1 stop23h 00mUnited Airlines
Mon 1/127:30 pmSEA - ICN
1 stop17h 10mUnited Airlines
Deal found 12/16$567
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/276:00 pmICN - SEA
1 stop31h 23mUnited Airlines
Mon 1/125:10 pmSEA - ICN
1 stop19h 30mUnited Airlines
Deal found 12/17$581
This Air Canada deal was found by Cheapflights users on 12/17. 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.
Wed 12/175:55 pmICN - SEA
1 stop18h 21mAir Canada
Sat 2/288:00 pmSEA - ICN
1 stop28h 10mAir Canada
Deal found 12/17$588
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:00 pmICN - SEA
2 stops22h 08mUnited Airlines
Wed 12/315:02 amSEA - ICN
2 stops31h 38mUnited Airlines
Deal found 12/15$589
This Delta deal was found by Cheapflights users on 12/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:05 pmICN - PDX
1 stop21h 10mDelta
Mon 3/25:30 amPDX - ICN
1 stop18h 00mDelta
Deal found 12/18$597
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:05 pmICN - PDX
1 stop29h 23mDelta
Sat 2/281:27 pmPDX - ICN
1 stop34h 03mDelta
Deal found 12/17$598
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:35 pmICN - PDX
1 stop13h 00mMultiple Airlines
Fri 1/21:51 pmPDX - ICN
1 stop35h 44mMultiple Airlines
Deal found 12/17$607
This Alaska Airlines deal was found by Cheapflights users on 12/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:35 pmICN - PDX
1 stop20h 37mMultiple Airlines
Sun 12/285:10 amPDX - ICN
1 stop20h 25mMultiple Airlines
Deal found 12/18$615

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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$527
(Gotogate)

One-way from

$289
(Kiwi.com)

Popular in

August

Cheapest in

November

Average price

$645

Good round-trip deal

$567 or less

Good one-way deal

$573 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. 8% potential increase in price ($62 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 December 2025
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 December 18, 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

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 2/26

12:45 pm-4:21 pm

2 stops20h 36m

Seattle/Tacoma Intl

Sun 3/1

5:05 am-4:15 pm

1 stop18h 10m

$557

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 12/26

6:00 pm-9:07 pm

1 stop20h 07m

Seattle/Tacoma Intl

Mon 12/29

5:54 pm-4:15 pm

1 stop29h 21m

$558

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 2/5

12:45 pm-4:29 pm

2 stops20h 44m

Seattle/Tacoma Intl

Thu 2/26

7:15 am-4:15 pm

1 stop16h 00m

$558

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Thu 2/19

7:15 pm-6:09 pm

1 stop39h 54m

Portland

Mon 3/2

2:05 pm-4:45 pm

1 stop33h 40m

$587

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 3/10

11:45 am-3:50 pm

2 stops20h 05m

Seattle/Tacoma Intl

Wed 3/18

5:00 am-4:40 am

2 stops31h 40m

$590

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sun 2/1

8:35 pm-5:59 pm

1 stop14h 24m

Portland

Fri 2/6

5:35 pm-6:35 pm

1 stop32h 00m

$596

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 2/20

7:15 pm-10:47 am

2 stops32h 32m

Portland

Mon 3/2

2:05 pm-4:45 pm

1 stop33h 40m

$596

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 2/20

8:05 pm-8:55 pm

1 stop17h 50m

Portland

Mon 3/2

7:10 am-4:30 pm

1 stop16h 20m

$597

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Thu 2/19

8:05 pm-8:31 am

1 stop29h 26m

Portland

Mon 3/2

9:15 am-4:30 pm

1 stop14h 15m

$600

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Mon 2/23

6:55 pm-6:30 pm

1 stop16h 35m

Portland

Fri 3/6

9:50 am-5:10 pm

1 stop14h 20m

$611

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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 $667). 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 December 18, 2025.

When flying from Seoul to State of Washington, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 49% versus a flight at noon.

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 December 18, 2025.

The most flights from SEL to USWA 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 (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 December 18, 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
1,186 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

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
1,186 reviews
Korean Air
8.4
Very good
1,186 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

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
8.2
Very good
493 reviews
Korean Air
8.4
Very good
1,186 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

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
11,479 reviews
Korean Air
8.4
Very good
1,186 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

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
8,008 reviews
Korean Air
8.4
Very good
1,186 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

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
2,820 reviews
Korean Air
8.4
Very good
1,186 reviews

Crew

8.7

Boarding

8.5

Food

8.1

Overall

8.4

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 14h 24m. 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 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 (83%), Korean Air (83%) or Thai Airways (81%) 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 $340. On average you can expect to pay $1,189. The most popular route, (Incheon Intl - Seattle/Tacoma Intl), can usually be booked for $558.

  • 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 $667). 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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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 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$352Average$866FlexibilityNo cancel feeOn-time85%
Asiana AirlinesCheapest$467Average$663FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$470Average$728FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$472Average$727FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$476Average$578FlexibilityNo cancel feeOn-time75%
DeltaCheapest$606Average$678FlexibilityNo cancel feeOn-timeN/A

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