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$410+ 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$518
(United Airlines)

One-way from

$458
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$678

Good round-trip deal

$645 or less

Good one-way deal

$604 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. 21% potential increase in price ($240 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Trip.com deal was found by Cheapflights users on 6/11. 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 6/134:50 pmICN - SEA
1 stop24h 09mUnited Airlines
Sun 6/295:10 amSEA - ICN
1 stop31h 10mUnited Airlines
Deal found 6/11$509
This WhyPayMore deal was found by Cheapflights users on 6/12. 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 9/198:35 pmICN - SEA
Nonstop10h 10mHawaiian Airlines
Sat 9/272:50 pmSEA - ICN
Nonstop11h 45mHawaiian Airlines
Deal found 6/12$547
This WhyPayMore deal was found by Cheapflights users on 6/11. 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 10/105:45 pmICN - PDX
1 stop13h 01mAir Canada
Sun 10/197:40 pmPDX - ICN
1 stop28h 25mAir Canada
Deal found 6/11$549
This Gotogate deal was found by Cheapflights users on 6/10. 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.
Thu 9/115:45 pmICN - SEA
1 stop31h 36mAir Canada
Sun 9/281:45 pmSEA - ICN
1 stop34h 20mAir Canada
Deal found 6/10$558
This FlightHub deal was found by Cheapflights users on 6/12. 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.
Fri 9/126:20 pmICN - SEA
Nonstop10h 10mAsiana Airlines
Tue 3/1012:10 amSEA - ICN
Nonstop12h 10mAsiana Airlines
Deal found 6/12$571
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Sun 11/28:35 pmICN - SEA
Nonstop10h 20mAlaska Airlines
Thu 11/68:05 amSEA - ICN
1 stop18h 20mAlaska Airlines
Deal found 6/10$588
This Gotogate deal was found by Cheapflights users on 6/12. 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.
Wed 12/244:10 pmICN - SEA
Nonstop9h 50mKorean Air
Mon 12/2911:00 amSEA - ICN
Nonstop11h 55mKorean Air
Deal found 6/12$590
This deal was found by Cheapflights users on 6/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/278:05 pmICN - SEA
Nonstop10h 15mDelta
Tue 11/411:15 amSEA - ICN
Nonstop12h 15mDelta
Deal found 6/12$600
This Hanatour deal was found by Cheapflights users on 6/10. 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.
Mon 12/228:05 pmICN - PDX
1 stop20h 46mDelta
Mon 1/55:10 pmPDX - ICN
1 stop30h 20mDelta
Deal found 6/10$620
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 9/911:30 amICN - PDX
2 stops19h 35mUnited Airlines
Fri 9/1912:53 pmPDX - ICN
2 stops23h 27mUnited Airlines
Deal found 6/10$651
This Gotogate deal was found by Cheapflights users on 6/11. 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.
Thu 6/269:10 amICN - SEA
2 stops21h 06mMultiple Airlines
Thu 7/37:15 pmSEA - ICN
1 stop28h 50mMultiple Airlines
Deal found 6/11$661
This Gotogate deal was found by Cheapflights users on 6/10. 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.
Fri 9/58:30 amICN - PDX
2 stops22h 16mMultiple Airlines
Thu 9/1110:00 amPDX - ICN
1 stop14h 05mMultiple Airlines
Deal found 6/10$703

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 June 12, 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

Wed 8/27

11:30 am-10:59 pm

1 stop27h 29m

Seattle/Tacoma Intl

Sat 9/27

11:10 am-4:20 am

2 stops25h 10m

$518

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 9/19

8:35 pm-2:45 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Sat 9/27

2:50 pm-6:35 pm

Nonstop11h 45m

$547

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Fri 10/10

5:45 pm-2:46 pm

1 stop13h 01m

Portland

Sun 10/19

7:40 pm-4:05 pm

1 stop28h 25m

$549

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 9/11

5:45 pm-9:21 am

1 stop31h 36m

Seattle/Tacoma Intl

Sun 9/28

1:45 pm-4:05 pm

1 stop34h 20m

$558

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Fri 9/12

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Tue 3/10

12:10 am-4:20 am

Nonstop12h 10m

$571

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 11/2

8:35 pm-1:55 pm

Nonstop10h 20m

Seattle/Tacoma Intl

Thu 11/6

8:05 am-7:25 pm

1 stop18h 20m

$588

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 10/27

8:05 pm-2:20 pm

Nonstop10h 15m

Seattle/Tacoma Intl

Tue 11/4

11:15 am-4:30 pm

Nonstop12h 15m

$600

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 7/7

4:40 pm-10:50 am

Nonstop10h 10m

Seattle/Tacoma Intl

Mon 7/21

1:20 pm-4:40 pm

Nonstop11h 20m

$604

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 9/23

4:50 pm-9:01 pm

2 stops20h 11m

Portland

Tue 11/25

7:00 am-5:40 am

2 stops29h 40m

$649

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 6/26

9:10 am-2:16 pm

2 stops21h 06m

Seattle/Tacoma Intl

Thu 7/3

7:15 pm-4:05 pm

1 stop28h 50m

$661

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 51 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 July is currently the most expensive (average of $391). 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 June 12, 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 June 12, 2025.

The most flights from ICN to USWA are scheduled on a Monday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 June 12, 2025.
See what other customers who have flown with EVA Air, Korean Air and Japan Airlines from Seoul to Washington have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

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
1,202 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

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
1,088 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

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
Japan Airlines
8.3
Very good
1,490 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

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
China Airlines
8.3
Very good
738 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

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
440 reviews
EVA Air
8.4
Very good
1,202 reviews

Overall

8.4

Entertainment

8.0

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

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 EVA Air ($541), WestJet ($546), and Hawaiian Airlines ($583).

  • 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: Thai Airways (67%), Asiana Airlines (67%), United Airlines (67%).

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

    On average you can expect to pay $1,568 for a flight from Incheon Intl Airport to State of Washington. The cheapest flight overall is $471 while the most popular route, (Incheon Intl - Seattle/Tacoma Intl) is currently priced at $509.

  • 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 July is currently the most expensive (average of $391). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$474Average$752FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$515Average$880FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$516Average$681FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$549Average$838FlexibilityNo cancel feeOn-time76%
DeltaCheapest$646Average$1,003FlexibilityNo cancel feeOn-timeN/A

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