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$305+ Cheap flights from Incheon Intl (ICN) 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 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Incheon Intl to Washington

Cheapest flights from Incheon Intl to Washington
Explore the most affordable flight options available from Incheon Intl to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Trip.com deal was found by Cheapflights users on 10/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/308:35 pmICN - SEA
Nonstop10h 20mHawaiian Airlines
Wed 11/121:45 pmSEA - ICN
Nonstop11h 50mHawaiian Airlines
Deal found 10/29$344
This WhyPayMore deal was found by Cheapflights users on 10/29. 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.
Fri 11/78:35 pmICN - SEA
Nonstop10h 20mHawaiian Airlines
Sat 11/151:45 pmSEA - ICN
Nonstop11h 50mHawaiian Airlines
Deal found 10/29$349
This WhyPayMore deal was found by Cheapflights users on 10/30. 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.
Mon 11/38:35 pmICN - SEA
Nonstop10h 20mHawaiian Airlines
Fri 11/71:45 pmSEA - ICN
Nonstop11h 50mHawaiian Airlines
Deal found 10/30$351
This Jetabroad deal was found by Cheapflights users on 10/30. 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 12/268:35 pmICN - SEA
Nonstop10h 10mHawaiian Airlines
Fri 1/161:40 pmSEA - ICN
Nonstop11h 55mHawaiian Airlines
Deal found 10/30$353
This Jetabroad deal was found by Cheapflights users on 10/29. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/268:35 pmICN - SEA
Nonstop10h 10mHawaiian Airlines
Wed 12/311:40 pmSEA - ICN
Nonstop11h 55mHawaiian Airlines
Deal found 10/29$354
This Jetabroad deal was found by Cheapflights users on 10/29. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/59:25 pmICN - SEA
1 stop17h 32mHawaiian Airlines
Wed 11/121:45 pmSEA - ICN
Nonstop11h 50mHawaiian Airlines
Deal found 10/29$358
This WhyPayMore deal was found by Cheapflights users on 10/29. 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.
Fri 11/78:35 pmICN - SEA
Nonstop10h 20mHawaiian Airlines
Wed 11/1212:45 pmSEA - ICN
1 stop37h 40mHawaiian Airlines
Deal found 10/29$366
This Hanatour deal was found by Cheapflights users on 10/30. 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.
Fri 12/198:35 pmICN - PDX
1 stop20h 37mHawaiian Airlines
Fri 12/261:51 pmPDX - ICN
1 stop35h 44mHawaiian Airlines
Deal found 10/30$441
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Sat 11/228:35 pmICN - GEG
1 stop20h 43mMultiple Airlines
Sat 11/297:00 amGEG - ICN
1 stop18h 35mMultiple Airlines
Deal found 10/30$580
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Thu 11/278:35 pmICN - GEG
1 stop13h 18mMultiple Airlines
Sat 11/297:00 amGEG - ICN
1 stop18h 35mMultiple Airlines
Deal found 10/30$591
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Sun 11/238:35 pmICN - GEG
1 stop19h 09mMultiple Airlines
Sat 11/295:30 amGEG - ICN
1 stop20h 05mMultiple Airlines
Deal found 10/30$609
This FlightHub deal was found by Cheapflights users on 10/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/266:55 pmICN - PDX
1 stop31h 20mAir Canada
Fri 12/59:50 amPDX - ICN
1 stop14h 20mAir Canada
Deal found 10/30$613

Cheap flight deals from Incheon Intl to Washington

Keep the following information in mind while searching for Incheon Intl to Washington flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$349
(WhyPayMore)

One-way from

$305
(Kiwi.com)

Popular in

August

Cheapest in

September

Average price

$704

Good round-trip deal

$560 or less

Good one-way deal

$403 or less
Provider with most accurate pricing for Seoul (SEL)-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Seoul (SEL)-Seattle/Tacoma Intl flights.
Search Deals
From Incheon Intl to Washington
Search Deals
One-way flight from Incheon Intl to Washington
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals
Price to beat on a round-trip flight from Incheon Intl to Washington.
Search Deals
Price to beat on a one-way flight from Incheon Intl to Washington.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Incheon Intl 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 October 30, 2025.
Use the filters below to find and compare flights from Incheon Intl Airport to Washington that are best for you.

Fly from

Incheon Intl

Fly to

Washington

Route

Depart

Return

Price

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 11/22

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 11/24

12:10 am-5:20 am

Nonstop12h 10m

$524

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 11/24

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Sun 11/30

12:10 am-5:20 am

Nonstop12h 10m

$524

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 11/24

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Thu 11/27

12:10 am-5:20 am

Nonstop12h 10m

$524

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 11/24

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Mon 11/24

12:10 am-5:20 am

Nonstop12h 10m

$524

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 12/25

9:00 pm-1:55 pm

Nonstop9h 55m

Seattle/Tacoma Intl

Sat 1/17

12:10 am-5:20 am

Nonstop12h 10m

$524

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 12/25

12:45 pm-9:07 pm

1 stop25h 22m

Seattle/Tacoma Intl

Mon 1/5

9:06 am-5:40 am

2 stops27h 34m

$529

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 12/16

12:45 pm-4:09 pm

2 stops20h 24m

Seattle/Tacoma Intl

Mon 1/5

7:05 am-5:40 am

1 stop29h 35m

$529

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 12/29

8:35 pm-1:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Fri 1/16

1:40 pm-6:35 pm

Nonstop11h 55m

$578

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 12/27

8:35 pm-1:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Fri 1/16

1:40 pm-6:35 pm

Nonstop11h 55m

$578

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 12/28

8:35 pm-1:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Thu 1/8

1:40 pm-6:35 pm

Nonstop11h 55m

$578

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 46 results
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Best time to book a flight from Incheon Intl to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Incheon Intl 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 Incheon Intl Airport to Washington

What is the cheapest month to book a flight from Incheon Intl Airport to State of Washington?

Currently, November is the cheapest month in which you can book a flight from Incheon Intl Airport to State of Washington (average of $341). Flying from Incheon Intl Airport to State of Washington in August is currently the most expensive (average of $670). 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 ICN to WA?

Find hourly flight availability from Incheon Intl 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 October 30, 2025.

It’s typically best to fly out from Incheon Intl Airport to State of Washington in the afternoon. Doing so could potentially save you 48% on the flight price compared to flying at noon, which is usually more expensive.

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 October 30, 2025.
Read through reviews of airlines operating flights from Incheon Intl Airport to Washington, such as Korean Air, Asiana Airlines, and Alaska Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

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
1,155 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

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
484 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

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
11,218 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

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
7,998 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

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
2,798 reviews
Korean Air
8.4
Very good
1,155 reviews

Crew

8.7

Comfort

8.3

Food

8.1

Entertainment

8.2

Boarding

8.5

Overall

8.4

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 Incheon Intl 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 Incheon Intl Airport to State of Washington flight route?

    This flight path from Incheon Intl 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 Incheon Intl Airport to State of Washington?

    Airlines like Asiana Airlines, Alaska Airlines, and Air Canada fly from Incheon Intl Airport to State of Washington in about 9h 55m. The time it takes to get you to your destination can typically vary by up to 21h 25m. The distance from Incheon Intl Airport 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 most popular routes from Incheon Intl Airport to State of Washington?

    Most travelers choose Incheon Intl - Seattle/Tacoma Intl, Incheon Intl - Portland or Incheon Intl - Spokane when deciding on the best route from Incheon Intl Airport to State of Washington.

  • What are the most reliable airlines from Incheon Intl Airport to State of Washington?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Incheon Intl Airport to State of Washington on time: Alaska Airlines (55%), Hawaiian Airlines (55%), Delta (53%).

  • What are the cheapest flights from Incheon Intl Airport to State of Washington?

    On average you can expect to pay $1,385 for a flight from Incheon Intl Airport to State of Washington. The cheapest flight overall is $264 while the most popular route, (Incheon Intl - Seattle/Tacoma Intl) is currently priced at $340.

  • Can I find deals for flights from Incheon Intl to Washington that include hotel bookings?

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

  • How can I find direct flights from Incheon Intl to Washington?

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

  • Can I find deals for business class flights from Incheon Intl to Washington?

    Yes. Cheapflights offers flight deals from Incheon Intl 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 Incheon Intl Airport to State of Washington?

    Currently, November is the cheapest month in which you can book a flight from Incheon Intl Airport to State of Washington (average of $341). Flying from Incheon Intl Airport to State of Washington in August is currently the most expensive (average of $670). 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 Incheon Intl 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 Incheon Intl to Washington

Discover the top 6 airlines that operate flights from Incheon Intl 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$468Average$679FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$470Average$743FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$472Average$727FlexibilityNo cancel feeOn-time67%
Alaska AirlinesCheapest$476Average$556FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$485Average$866FlexibilityNo cancel feeOn-time85%
DeltaCheapest$618Average$721FlexibilityNo cancel feeOn-timeN/A

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