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$348+ 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 3/17. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
févr. 28 — mars 71
sam. 2/28
sam. 3/7
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 janvier 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.
jeu. 2/196:55 pm
ICN
-
SEA
1 stop12h 51m
Air Canada
mar. 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.
lun. 6/17:55 am
ICN
-
SEA
2 stops41h 20m
Multiple Airlines
mer. 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.
mar. 4/285:45 pm
ICN
-
SEA
1 stop20h 25m
Air Canada
dim. 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.
ven. 4/175:45 pm
ICN
-
SEA
1 stop20h 25m
Multiple Airlines
lun. 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.
mer. 4/295:45 pm
ICN
-
SEA
1 stop17h 33m
Air Canada
lun. 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.
mar. 6/27:55 am
ICN
-
SEA
2 stops22h 25m
Multiple Airlines
ven. 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.
mar. 6/25:45 pm
ICN
-
SEA
1 stop12h 35m
Air Canada
mar. 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.
ven. 4/175:45 pm
ICN
-
SEA
1 stop17h 33m
Air Canada
lun. 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.
mar. 4/289:00 am
ICN
-
SEA
2 stops26h 18m
Multiple Airlines
dim. 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.
mer. 4/225:45 pm
ICN
-
SEA
1 stop13h 18m
Air Canada
ven. 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.
mar. 2/246:55 pm
ICN
-
PDX
1 stop31h 20m
Air Canada
mer. 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.
jeu. 3/52:10 pm
ICN
-
PDX
2 stops17h 30m
Multiple Airlines
lun. 3/239:50 am
PDX
-
ICN
1 stop14h 25m
Multiple Airlines
Deal found 1/28$530

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 janvier 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 South Korea to Washington
Search Deals
One-way flight from South Korea 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 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 janvier 29, 2026.
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

BusanSeattle

PUS - SEA

PUSSEA

Busan Gimhae

mer. 4/22

7:15 am-3:03 pm

2 stops23h 48m

Seattle/Tacoma Intl

jeu. 5/7

9:55 am-7:20 am

2 stops29h 25m

$558

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

mer. 2/25

12:45 pm-11:30 pm

1 stop27h 45m

Seattle/Tacoma Intl

mer. 3/4

5:20 pm-5:40 am

1 stop19h 20m

$572

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

jeu. 2/19

12:45 pm-6:26 pm

1 stop22h 41m

Seattle/Tacoma Intl

mar. 4/14

11:35 am-4:20 am

1 stop24h 45m

$572

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

jeu. 2/26

6:00 pm-10:13 pm

2 stops21h 13m

Seattle/Tacoma Intl

jeu. 3/5

8:45 am-5:40 am

2 stops27h 55m

$577

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 2/23

6:00 pm-11:30 pm

1 stop22h 30m

Seattle/Tacoma Intl

sam. 3/7

4:31 pm-3:15 pm

2 stops29h 44m

$584

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

lun. 2/23

8:35 pm-1:37 pm

2 stops34h 02m

Portland

ven. 3/6

3:52 pm-6:35 pm

1 stop33h 43m

$598

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

lun. 3/2

6:00 pm-9:49 am

2 stops32h 49m

Seattle/Tacoma Intl

dim. 3/8

5:00 am-4:40 am

2 stops31h 40m

$601

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

sam. 2/28

6:00 pm-9:49 am

2 stops32h 49m

Seattle/Tacoma Intl

sam. 3/7

4:31 pm-3:15 pm

2 stops29h 44m

$607

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

mar. 4/7

7:00 pm-11:59 pm

1 stop20h 59m

Portland

mar. 4/21

6:05 pm-4:50 pm

1 stop30h 45m

$611

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

mer. 3/4

7:15 pm-11:44 pm

2 stops21h 29m

Portland

dim. 3/15

11:59 pm-3:55 pm

1 stop23h 56m

$620

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 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 $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 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 janvier 29, 2026.

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

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 January 24, 2026.

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 janvier 29, 2026.

The most flights from KR0 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).

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 janvier 29, 2026.
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
1,188 reviews

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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
11,805 reviews
Korean Air
8.4
Very good
1,188 reviews

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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
8,128 reviews
Korean Air
8.4
Very good
1,188 reviews

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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

Comfort

8.3

Crew

8.7

Boarding

8.5

Overall

8.4

Entertainment

8.2

Food

8.1

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, Delta, and Korean Air fly from South Korea to State of Washington in about 18h 40m. The time it takes to get you to your destination can typically vary by up to 9h 05m. The distance from South Korea to State of Washington is about 5228 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 $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.

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 5 airlines flying from South Korea to Washington

Discover the top 5 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 janvier 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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