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$323+ 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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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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 September 17, 2025.

Round-trip from

$330
(Trip.com)

One-way from

$323
(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 Incheon Intl to Washington
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One-way flight from Incheon Intl 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 Incheon Intl to Washington.
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Price to beat on a one-way flight from Incheon Intl to Washington.
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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 September 17, 2025.

This Trip.com deal was found by Cheapflights users on 9/16. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:35 pmICN - PDX
1 stop18h 10mHawaiian Airlines
Sun 10/197:20 amPDX - ICN
1 stop19h 15mHawaiian Airlines
Deal found 9/16$330
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.
Fri 10/249:25 pmICN - PDX
1 stop24h 35mHawaiian Airlines
Tue 11/47:09 amPDX - ICN
1 stop19h 16mHawaiian Airlines
Deal found 9/15$338
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:35 pmICN - PDX
1 stop28h 25mAlaska Airlines
Sun 10/196:00 amPDX - ICN
1 stop20h 35mAlaska Airlines
Deal found 9/16$339
This Trip.com 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 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 stop18h 10mHawaiian Airlines
Sat 10/255:50 pmPDX - ICN
1 stop33h 35mHawaiian Airlines
Deal found 9/15$342
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 stop18h 10mAlaska 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
Mon 11/310:25 amPDX - ICN
1 stop40h 00mAlaska Airlines
Deal found 9/14$380
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.
Fri 10/248:35 pmICN - PDX
2 stops28h 52mAlaska Airlines
Tue 11/47:09 amPDX - ICN
1 stop19h 16mAlaska Airlines
Deal found 9/15$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 9/17. 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 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 stop19h 43mAlaska Airlines
Wed 10/295:30 pmPDX - ICN
2 stops33h 55mAlaska Airlines
Deal found 9/17$433
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/39:25 pmICN - SEA
1 stop25h 10mAlaska Airlines
Fri 11/77:59 pmSEA - ICN
2 stops30h 26mAlaska Airlines
Deal found 9/16$458

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 September 17, 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

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Thu 10/16

8:35 pm-6:20 am

1 stop25h 45m

Portland

Thu 10/23

2:30 pm-6:35 pm

1 stop36h 05m

$339

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 10/25

8:35 pm-6:17 am

1 stop25h 42m

Portland

Sun 11/2

7:30 am-6:35 pm

1 stop18h 05m

$339

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-8:28 pm

1 stop15h 53m

Portland

Sat 10/25

10:00 pm-7:25 pm

2 stops29h 25m

$421

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 10/10

8:35 pm-9:27 am

2 stops28h 52m

Portland

Sun 10/19

6:00 am-6:35 pm

1 stop20h 35m

$442

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 10/24

8:35 pm-9:27 am

2 stops28h 52m

Portland

Mon 11/3

10:25 am-7:25 pm

1 stop40h 00m

$447

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

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 9/16

Showing 1-10 of 48 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, January is the cheapest month in which you can book a flight from Incheon Intl Airport to State of Washington (average of $238). Flying from Incheon Intl Airport 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 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 September 17, 2025.

When flying from Incheon Intl Airport to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Incheon Intl Airport to State of Washington

Explore weekly flight availability from Incheon Intl 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 17, 2025.

The most flights from ICN 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 17, 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
1,140 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

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
1,140 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

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
481 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

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
10,000 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

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
8.0
Very good
7,961 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

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!!
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,140 reviews

Comfort

8.3

Boarding

8.5

Food

8.1

Crew

8.7

Entertainment

8.2

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 Hawaiian Airlines, Alaska Airlines, and United Airlines fly from Incheon Intl Airport to State of Washington in about 18h 10m. The time it takes to get you to your destination can typically vary by up to 7h 35m. The distance from Incheon Intl Airport 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 Incheon Intl Airport to State of Washington one-way?

    The cheapest airlines for a one-way flight from Incheon Intl Airport to State of Washington are WestJet ($337), Air Canada ($410), and Asiana Airlines ($414).

  • 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: Delta (37%), Korean Air (37%), Alaska Airlines (33%).

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

    On average you can expect to pay $1,521 for a flight from Incheon Intl Airport to State of Washington. The cheapest flight overall is $245 while the most popular route, (Incheon Intl - Seattle/Tacoma Intl) is currently priced at $327.

  • 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, January is the cheapest month in which you can book a flight from Incheon Intl Airport to State of Washington (average of $238). Flying from Incheon Intl Airport 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.

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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 7 airlines flying from Incheon Intl to Washington

Discover the top 7 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 September 17, 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$795FlexibilityNo 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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