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$337+ 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 9/17. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 July 29, 2025.

Round-trip from

$506
(Alaska Airlines)

One-way from

$337
(Kiwi.com)

Popular in

August

Cheapest in

June

Average price

$844

Good round-trip deal

$623 or less

Good one-way deal

$621 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. 8% potential increase in price ($72 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:35 pmICN - SEA
Nonstop10h 10mHawaiian Airlines
Sat 11/291:45 pmSEA - ICN
Nonstop11h 50mHawaiian Airlines
Deal found 7/29$506
This WhyPayMore deal was found by Cheapflights users on 7/27. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/108:35 pmICN - PDX
1 stop14h 24mHawaiian Airlines
Sun 10/196:00 amPDX - ICN
1 stop20h 35mHawaiian Airlines
Deal found 7/27$508
This Alaska Airlines deal was found by Cheapflights users on 7/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:35 pmICN - SEA
Nonstop10h 00mAlaska Airlines
Sat 11/12:45 pmSEA - ICN
Nonstop11h 50mAlaska Airlines
Deal found 7/28$511
This WhyPayMore deal was found by Cheapflights users on 7/29. 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.
Mon 10/66:20 pmICN - SEA
Nonstop10h 10mAsiana Airlines
Sat 11/1512:10 amSEA - ICN
Nonstop12h 10mAsiana Airlines
Deal found 7/29$518
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2512:45 pmICN - SEA
1 stop23h 00mUnited Airlines
Sat 12/273:11 pmSEA - ICN
1 stop32h 04mUnited Airlines
Deal found 7/27$523
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/258:35 pmICN - PDX
2 stops25h 45mAlaska Airlines
Sun 11/27:30 amPDX - ICN
1 stop18h 05mAlaska Airlines
Deal found 7/27$530
This United Airlines deal was found by Cheapflights users on 7/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/812:45 pmICN - PDX
2 stops25h 30mUnited Airlines
Mon 1/53:54 pmPDX - ICN
1 stop20h 46mUnited Airlines
Deal found 7/27$557
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/117:20 pmICN - PDX
1 stop33h 40mDelta
Thu 9/187:15 amPDX - ICN
1 stop17h 15mDelta
Deal found 7/28$623
This Air Canada deal was found by Cheapflights users on 7/27. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/135:45 pmICN - PDX
1 stop13h 01mAir Canada
Mon 9/226:15 amPDX - ICN
1 stop17h 50mAir Canada
Deal found 7/27$652
This Gotogate deal was found by Cheapflights users on 7/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2910:40 pmICN - PDX
1 stop26h 41mMultiple Airlines
Thu 10/26:15 amPDX - ICN
1 stop19h 35mMultiple Airlines
Deal found 7/27$660
This Mytrip deal was found by Cheapflights users on 7/26. 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.
Tue 9/28:55 pmICN - PDX
1 stop15h 42mAsiana Airlines
Thu 10/27:35 pmPDX - ICN
1 stop16h 55mAsiana Airlines
Deal found 7/26$745
This United Airlines deal was found by Cheapflights users on 7/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1511:30 amICN - GEG
2 stops49h 33mUnited Airlines
Sat 8/231:38 pmGEG - ICN
2 stops33h 22mUnited Airlines
Deal found 7/28$892

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 July 29, 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

Thu 11/27

8:35 pm-1:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Sat 11/29

1:45 pm-6:35 pm

Nonstop11h 50m

$506

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sat 10/25

8:35 pm-2:35 pm

Nonstop10h 00m

Seattle/Tacoma Intl

Sat 11/15

1:45 pm-6:35 pm

Nonstop11h 50m

$507

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 10/10

8:35 pm-6:59 pm

1 stop14h 24m

Portland

Sun 10/19

6:00 am-6:35 pm

1 stop20h 35m

$508

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 10/6

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Sat 11/15

12:10 am-5:20 am

Nonstop12h 10m

$518

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 12/25

12:45 pm-12:27 pm

1 stop16h 42m

Seattle/Tacoma Intl

Fri 1/9

12:50 pm-5:40 am

1 stop23h 50m

$523

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 10/25

8:35 pm-6:20 am

2 stops25h 45m

Portland

Sun 11/2

7:30 am-6:35 pm

1 stop18h 05m

$530

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Mon 12/8

12:45 pm-9:15 pm

2 stops25h 30m

Portland

Mon 1/5

3:54 pm-5:40 am

1 stop20h 46m

$557

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Thu 9/11

7:20 pm-1:00 pm

1 stop33h 40m

Portland

Thu 9/18

7:15 am-4:30 pm

1 stop17h 15m

$623

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 9/13

5:45 pm-2:46 pm

1 stop13h 01m

Portland

Mon 9/22

6:15 am-4:05 pm

1 stop17h 50m

$652

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Mon 9/29

10:40 pm-9:21 am

1 stop26h 41m

Portland

Thu 10/2

6:15 am-5:50 pm

1 stop19h 35m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 31 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 $389). 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 July 29, 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 July 29, 2025.

The most flights from ICN to USWA are scheduled on a Monday (9 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (5 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 July 29, 2025.
Read through reviews of airlines operating flights from Incheon Intl Airport to Washington, such as EVA Air, Korean Air, and Asiana Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
EVA Air
8.4
Very good
1,221 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Korean Air
8.4
Very good
1,121 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Asiana Airlines
8.2
Very good
465 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Hainan Airlines
8.2
Very good
43 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount
Alaska Airlines
8.0
Very good
10,000 reviews
EVA Air
8.4
Very good
1,221 reviews

Food

8.1

Comfort

8.3

Overall

8.4

Crew

8.6

Boarding

8.4

Entertainment

8.0

Reviews

1 / 20
10.0
Excellent

Dale,May 2025

TPE - SFO

Flight staff were very courteous and efficient. Aircraft (seats, lavatories, etc) kept clean and replenished. Food service was timed perfectly and was delicious and had right amount

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.

  • 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 ($412), Hainan Airlines ($414), and Alaska Airlines ($526).

  • 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 (61%), Korean Air (61%), Thai Airways (43%).

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

    On average you can expect to pay $1,667 for a flight from Incheon Intl Airport to State of Washington. The cheapest flight overall is $485 while the most popular route, (Incheon Intl - Seattle/Tacoma Intl) is currently priced at $474.

  • 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 $389). 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 5 airlines flying from Incheon Intl to Washington

Discover the top 5 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$474Average$752FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$516Average$646FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$517Average$851FlexibilityNo cancel feeOn-time81%
Asiana AirlinesCheapest$536Average$777FlexibilityNo cancel feeOn-time76%
DeltaCheapest$638Average$896FlexibilityNo cancel feeOn-timeN/A

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