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$289+ Cheap flights from South Korea 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.
ICN — SEA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from South Korea to Washington

Cheapest flights from South Korea to Washington
Explore the most affordable flight options available from South Korea to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:00 pmICN - SEA
1 stop20h 07mUnited Airlines
Sat 2/287:15 amSEA - ICN
1 stop16h 00mUnited Airlines
Deal found 12/18$557
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.
Thu 12/186:00 pmICN - SEA
2 stops22h 08mUnited Airlines
Thu 1/112:35 pmSEA - ICN
1 stop24h 05mUnited Airlines
Deal found 12/17$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 1/89:25 amSEA - ICN
1 stop37h 50mUnited Airlines
Deal found 12/16$559
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/226:00 pmICN - SEA
1 stop23h 59mUnited Airlines
Mon 1/125:10 pmSEA - ICN
1 stop19h 30mUnited Airlines
Deal found 12/18$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 12/17. 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.
Thu 12/256:00 pmICN - SEA
2 stops20h 17mUnited Airlines
Sat 1/35:02 amSEA - ICN
2 stops31h 38mUnited Airlines
Deal found 12/17$590
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
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:35 pmICN - PDX
1 stop19h 24mMultiple Airlines
Fri 1/167:10 amPDX - ICN
1 stop18h 25mMultiple Airlines
Deal found 12/18$625

Find flight deals from South Korea to Washington

Keep the following information in mind while searching for South Korea 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 South Korea to Washington
Search Deals
One-way flight from South Korea 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 South Korea to Washington.
Search Deals
Price to beat on a one-way flight from South Korea to Washington.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from South Korea 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 South Korea to Washington that are best for you.

Fly from

South Korea

Fly to

Washington

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 1/29

12:45 pm-6:27 pm

1 stop22h 42m

Seattle/Tacoma Intl

Sat 1/31

3:30 pm-4:15 pm

2 stops31h 45m

$557

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 1/29

12:45 pm-9:58 pm

2 stops26h 13m

Seattle/Tacoma Intl

Thu 2/26

12:32 pm-5:40 am

1 stop24h 08m

$557

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 2/18

12:45 pm-10:59 pm

2 stops27h 14m

Seattle/Tacoma Intl

Thu 3/5

5:00 am-4:15 pm

1 stop18h 15m

$557

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 2/5

12:45 pm-4:29 pm

2 stops20h 44m

Seattle/Tacoma Intl

Thu 2/26

12:32 pm-5:40 am

1 stop24h 08m

$557

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 2/8

12:45 pm-4:29 pm

2 stops20h 44m

Seattle/Tacoma Intl

Fri 2/13

12:32 pm-4:15 pm

1 stop34h 43m

$557

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 1/31

6:00 pm-9:15 pm

2 stops20h 15m

Seattle/Tacoma Intl

Sat 2/7

9:00 am-5:40 am

2 stops27h 40m

$558

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 1/30

12:45 pm-11:16 pm

2 stops27h 31m

Seattle/Tacoma Intl

Fri 2/6

7:30 pm-4:15 pm

1 stop27h 45m

$560

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 3/9

5:00 pm-11:16 pm

2 stops22h 16m

Seattle/Tacoma Intl

Wed 3/18

7:15 am-3:15 pm

1 stop16h 00m

$560

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

8:05 pm-8:55 pm

1 stop17h 50m

Portland

Mon 3/2

7:10 am-4:30 pm

1 stop16h 20m

$597

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 60 results
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Best time to book a flight from South Korea to Washington

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

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

Currently, November is the cheapest month in which you can book a flight from South Korea to State of Washington (average of $338). Flying from South Korea 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 KR to WA?

Find hourly flight availability from South Korea 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.

It’s optimal to fly from South Korea to State of Washington in the afternoon. By choosing this option you can save up to 27% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from South Korea to State of Washington?

Use this chart to determine the cheapest time to fly round-trip from South Korea to Washington. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their South Korea to State of Washington flight should consider departing on Sunday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from South Korea to State of Washington

Explore weekly flight availability from South Korea 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 KR0 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).

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.
Read reviews from past customers who have flown Korean Air, Asiana Airlines, and Alaska Airlines from South Korea to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,186 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

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

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

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

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

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
11,481 reviews
Korean Air
8.4
Very good
1,186 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

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
8,010 reviews
Korean Air
8.4
Very good
1,186 reviews

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

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

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Crew

8.7

Entertainment

8.2

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 South Korea 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 South Korea to State of Washington flight route?

    This flight path from South Korea to Washington was viewed by 1 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Airlines like United Airlines, Hawaiian Airlines, and Delta fly from South Korea to State of Washington in about 14h 24m. The time it takes to get you to your destination can typically vary by up to 8h 18m. The distance from South Korea to State of Washington is about 5273 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $245 on Hawaiian Airlines. Other airlines that offer cheap prices include Alaska Airlines from $264 and Air Canada from $351 one-way.

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

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

  • How can I find direct flights from South Korea to Washington?

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

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

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

    Currently, November is the cheapest month in which you can book a flight from South Korea to State of Washington (average of $338). Flying from South Korea 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 South Korea 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 South Korea to Washington

Discover the top 6 airlines that operate flights from South Korea 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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