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$313+ 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap 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 September 15, 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 South Korea to Washington
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One-way flight from South Korea 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 South Korea to Washington.
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Price to beat on a one-way flight from South Korea to Washington.
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Find 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 September 15, 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 9/13. 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 stop25h 45mHawaiian Airlines
Sat 10/256:00 amPDX - ICN
1 stop20h 35mHawaiian Airlines
Deal found 9/13$330
This Trip.com deal was found by Cheapflights users on 9/13. 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.
Thu 11/208:35 pmICN - PDX
1 stop21h 08mHawaiian Airlines
Thu 11/272:35 pmPDX - ICN
1 stop35h 00mHawaiian Airlines
Deal found 9/13$333
This SmartFares deal was found by Cheapflights users on 9/13. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/149:25 pmICN - PDX
1 stop16h 49mAlaska Airlines
Sat 11/155:40 pmPDX - ICN
1 stop32h 45mAlaska Airlines
Deal found 9/13$343
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 stop15h 53mAlaska Airlines
Mon 11/310:25 amPDX - ICN
1 stop40h 00mAlaska 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 9/14. 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.
Fri 10/248:35 pmICN - PDX
2 stops28h 52mAlaska Airlines
Tue 11/47:09 amPDX - ICN
1 stop19h 16mAlaska Airlines
Deal found 9/14$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 9/13. 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 11/68:35 pmICN - SEA
Nonstop10h 20mAlaska Airlines
Wed 12/241:40 pmSEA - ICN
Nonstop11h 55mAlaska Airlines
Deal found 9/13$476
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 10/1312:20 pmPUS - SEA
1 stop16h 10mMultiple Airlines
Sun 10/2612:10 amSEA - PUS
1 stop19h 20mMultiple Airlines
Deal found 9/14$481

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 September 15, 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

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-9:27 am

2 stops28h 52m

Portland

Tue 11/4

7:09 am-7:25 pm

1 stop19h 16m

$414

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 10/13

8:35 pm-10:45 pm

1 stop18h 10m

Portland

Mon 10/20

9:40 pm-7:00 pm

2 stops29h 20m

$442

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

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sun 10/26

8:35 pm-12:09 am

1 stop19h 34m

Portland

Sun 11/2

5:00 am-6:25 pm

2 stops20h 25m

$449

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Wed 10/22

9:25 pm-10:30 pm

1 stop17h 05m

Portland

Sun 11/2

5:00 am-6:25 pm

2 stops20h 25m

$449

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 10/24

8:35 pm-10:45 pm

1 stop18h 10m

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 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, January is the cheapest month in which you can book a flight from South Korea to State of Washington (average of $238). Flying from South Korea 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 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from South Korea to State of Washington as you normally would.

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 September 15, 2025.

The most flights from KR0 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).

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 15, 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
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

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
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

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
479 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

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
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

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
7,954 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

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
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

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 Alaska Airlines, Korean Air, and Delta fly from South Korea to State of Washington in about 10h 15m. The time it takes to get you to your destination can typically vary by up to 15h 30m. The distance from South Korea to State of Washington is about 5200 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 $364 on Alaska Airlines. Other airlines that offer cheap prices include Asiana Airlines from $369 and United Airlines from $419 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, January is the cheapest month in which you can book a flight from South Korea to State of Washington (average of $238). Flying from South Korea 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.

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 7 airlines flying from South Korea to Washington

Discover the top 7 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 September 15, 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$885FlexibilityNo 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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