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$385+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
May 4 — May 111
Sun 5/4
Sun 5/11
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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$451
(WhyPayMore)

One-way from

$385
(American Airlines)

Popular in

August

Cheapest in

March

Average price

$760

Good round-trip deal

$662 or less

Good one-way deal

$585 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.
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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. 24% potential increase in price ($295 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 April 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 April 29, 2025.

This WhyPayMore deal was found by Cheapflights users on 4/29. 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.
Tue 5/136:20 pmICN - SEA
Nonstop10h 10mAsiana Airlines
Fri 6/62:15 pmSEA - ICN
Nonstop11h 40mAsiana Airlines
Deal found 4/29$451
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Wed 5/214:40 pmICN - SEA
Nonstop10h 00mKorean Air
Wed 6/111:20 pmSEA - ICN
Nonstop11h 20mKorean Air
Deal found 4/29$454
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/44:50 pmICN - SEA
1 stop20h 41mUnited Airlines
Wed 5/79:00 amSEA - ICN
1 stop27h 20mUnited Airlines
Deal found 4/29$483
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/144:50 pmICN - PDX
1 stop14h 04mUnited Airlines
Sun 7/201:37 pmPDX - ICN
1 stop33h 23mUnited Airlines
Deal found 4/29$512
This Delta deal was found by Cheapflights users on 4/28. 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.
Tue 5/134:00 pmICN - SEA
1 stop23h 18mDelta
Fri 6/61:20 pmSEA - ICN
Nonstop11h 20mDelta
Deal found 4/28$555
This Expedia deal was found by Cheapflights users on 4/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/125:45 pmICN - SEA
1 stop31h 36mAir Canada
Fri 9/1910:00 amSEA - ICN
1 stop14h 05mAir Canada
Deal found 4/27$559
This Tourvis deal was found by Cheapflights users on 4/28. 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 Tourvis is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/28:55 pmICN - SEA
1 stop15h 05mMultiple Airlines
Tue 6/32:15 pmSEA - ICN
Nonstop11h 40mMultiple Airlines
Deal found 4/28$561
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Thu 12/116:50 pmICN - PDX
1 stop16h 34mAir Canada
Mon 12/156:00 amPDX - ICN
1 stop18h 05mAir Canada
Deal found 4/29$588
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/145:25 pmICN - PDX
1 stop19h 56mMultiple Airlines
Wed 6/1110:31 pmPDX - ICN
1 stop24h 59mMultiple Airlines
Deal found 4/29$598
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Thu 5/84:40 pmICN - PDX
1 stop14h 35mKorean Air
Sat 5/175:06 pmPDX - ICN
1 stop32h 44mKorean Air
Deal found 4/29$629
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/134:40 pmICN - PDX
1 stop23h 30mDelta
Tue 6/107:15 amPDX - ICN
1 stop17h 25mDelta
Deal found 4/29$659
This Gotogate deal was found by Cheapflights users on 4/29. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1410:35 pmICN - SEA
2 stops26h 25mHainan Airlines
Thu 5/2211:00 amSEA - ICN
2 stops42h 30mHainan Airlines
Deal found 4/29$691

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 April 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

Tue 5/13

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Fri 6/6

2:15 pm-5:55 pm

Nonstop11h 40m

$451

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 5/21

4:40 pm-10:40 am

Nonstop10h 00m

Seattle/Tacoma Intl

Wed 6/11

1:20 pm-4:40 pm

Nonstop11h 20m

$454

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Sun 5/4

11:30 am-9:57 pm

2 stops26h 27m

Seattle/Tacoma Intl

Tue 5/6

5:13 pm-3:00 pm

2 stops29h 47m

$483

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Wed 5/14

11:30 am-1:01 pm

2 stops41h 31m

Portland

Thu 7/17

7:37 am-3:00 pm

1 stop15h 23m

$512

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 6/4

8:40 pm-9:36 pm

1 stop16h 56m

Seattle/Tacoma Intl

Wed 6/11

2:15 pm-5:55 pm

Nonstop11h 40m

$552

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 5/13

4:00 pm-11:18 pm

1 stop23h 18m

Seattle/Tacoma Intl

Fri 6/6

1:20 pm-4:40 pm

Nonstop11h 20m

$555

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Sat 10/25

5:45 pm-2:46 pm

1 stop13h 01m

Portland

Sun 11/2

7:05 pm-5:05 pm

1 stop29h 00m

$597

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Wed 5/14

5:25 pm-9:21 pm

1 stop19h 56m

Portland

Wed 6/11

10:31 pm-3:30 pm

1 stop24h 59m

$598

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Tue 5/13

4:40 pm-12:10 am

1 stop23h 30m

Portland

Tue 6/10

7:15 am-4:40 pm

1 stop17h 25m

$659

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Mon 5/12

8:25 pm-4:43 pm

1 stop36h 18m

Portland

Mon 5/19

5:06 pm-5:50 pm

1 stop32h 44m

$660

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 44 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 $405). 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 April 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 April 29, 2025.

The most flights from ICN to USWA are scheduled on a Monday (8 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (5 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 April 29, 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
1,186 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
EVA Air
8.4
Very good
1,186 reviews
EVA Air
8.4
Very good
1,186 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Korean Air
8.4
Very good
1,066 reviews
EVA Air
8.4
Very good
1,186 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Japan Airlines
8.3
Very good
1,459 reviews
EVA Air
8.4
Very good
1,186 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
China Airlines
8.3
Very good
732 reviews
EVA Air
8.4
Very good
1,186 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop
Asiana Airlines
8.2
Very good
442 reviews
EVA Air
8.4
Very good
1,186 reviews

Boarding

8.4

Comfort

8.3

Food

8.1

Entertainment

8.0

Crew

8.6

Overall

8.4

Reviews

1 / 20
10.0
Excellent

Dale,Apr 2025

SFO - TPE

Great experience. Check in process was excellent - both online and bag drop

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 American Airlines ($385), Asiana Airlines ($522), and Hainan Airlines ($531).

  • 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 (58%), Korean Air (58%), Thai Airways (34%).

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

    On average you can expect to pay $1,235 for a flight from Incheon Intl Airport to State of Washington. The cheapest flight overall is $455 while the most popular route, (Incheon Intl - Seattle/Tacoma Intl) is currently priced at $451.

  • 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 $405). 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$474Average$752FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$515Average$1,051FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$516Average$860FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$538Average$718FlexibilityNo cancel feeOn-time71%
Asiana AirlinesCheapest$641Average$985FlexibilityNo cancel feeOn-time76%
DeltaCheapest$667Average$1,078FlexibilityNo cancel feeOn-timeN/A

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