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$352+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — SEA
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$471
(WhyPayMore)

One-way from

$352
(Kiwi.com)

Popular in

August

Cheapest in

March

Average price

$670

Good round-trip deal

$865 or less

Good one-way deal

$578 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. 23% potential increase in price ($283 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 March 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 March 28, 2025.

This WhyPayMore deal was found by Cheapflights users on 3/27. 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.
Mon 5/125:45 pmICN - SEA
1 stop12h 28mAir Canada
Thu 5/297:15 pmSEA - ICN
1 stop28h 50mAir Canada
Deal found 3/27$471
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Wed 5/75:45 pmICN - PDX
1 stop12h 55mAir Canada
Thu 5/157:40 pmPDX - ICN
1 stop28h 25mAir Canada
Deal found 3/27$483
This WhyPayMore deal was found by Cheapflights users on 3/27. 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.
Thu 5/227:20 pmICN - SEA
Nonstop10h 15mKorean Air
Fri 7/251:20 pmSEA - ICN
Nonstop11h 20mKorean Air
Deal found 3/27$487
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 4/1611:30 amICN - SEA
2 stops18h 29mUnited Airlines
Wed 4/238:50 amSEA - ICN
2 stops27h 30mUnited Airlines
Deal found 3/27$516
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Wed 5/75:45 pmICN - PDX
2 stops19h 15mMultiple Airlines
Thu 5/1510:10 amPDX - ICN
1 stop13h 55mMultiple Airlines
Deal found 3/27$580
This Delta deal was found by Cheapflights users on 3/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/34:00 pmICN - SEA
1 stop16h 05mDelta
Sun 4/1312:40 pmSEA - ICN
Nonstop11h 50mDelta
Deal found 3/26$617
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Thu 10/2310:40 amICN - SEA
2 stops19h 36mMultiple Airlines
Sat 10/255:45 amSEA - ICN
1 stop18h 20mMultiple Airlines
Deal found 3/27$623
This WhyPayMore deal was found by Cheapflights users on 3/27. 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.
Mon 4/146:20 pmICN - SEA
Nonstop10h 10mAsiana Airlines
Wed 5/72:15 pmSEA - ICN
Nonstop11h 40mAsiana Airlines
Deal found 3/27$637
This Gotogate deal was found by Cheapflights users on 3/27. 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.
Wed 5/710:35 pmICN - SEA
2 stops26h 25mHainan Airlines
Thu 5/2211:00 amSEA - ICN
2 stops42h 30mHainan Airlines
Deal found 3/27$775
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/27:20 pmICN - PDX
1 stop31h 25mDelta
Thu 4/247:23 amPDX - ICN
1 stop17h 07mDelta
Deal found 3/27$855
This Gotogate deal was found by Cheapflights users on 3/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/48:25 pmICN - PDX
1 stop16h 23mKorean Air
Wed 7/92:50 pmPDX - ICN
1 stop21h 40mKorean Air
Deal found 3/26$879
This United Airlines deal was found by Cheapflights users on 3/27. 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 4/311:30 amICN - PDX
2 stops27h 18mUnited Airlines
Thu 4/102:25 pmPDX - ICN
2 stops32h 35mUnited Airlines
Deal found 3/27$883

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 March 28, 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

Mon 5/12

5:45 pm-2:13 pm

1 stop12h 28m

Seattle/Tacoma Intl

Thu 5/29

7:15 pm-4:05 pm

1 stop28h 50m

$471

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Wed 5/7

5:45 pm-2:40 pm

1 stop12h 55m

Portland

Thu 5/15

7:40 pm-4:05 pm

1 stop28h 25m

$483

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Thu 5/22

7:20 pm-1:35 pm

Nonstop10h 15m

Seattle/Tacoma Intl

Fri 7/25

1:20 pm-4:40 pm

Nonstop11h 20m

$487

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Wed 4/16

11:30 am-6:07 pm

2 stops22h 37m

Seattle/Tacoma Intl

Sat 4/19

5:05 pm-3:00 pm

1 stop29h 55m

$516

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Wed 5/7

5:45 pm-9:00 pm

2 stops19h 15m

Portland

Thu 5/15

10:10 am-4:05 pm

1 stop13h 55m

$580

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 9/9

10:40 am-2:16 pm

2 stops19h 36m

Seattle/Tacoma Intl

Tue 9/23

10:00 am-4:05 pm

1 stop14h 05m

$592

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Tue 5/13

7:20 pm-1:35 pm

Nonstop10h 15m

Seattle/Tacoma Intl

Tue 7/1

6:15 am-5:20 pm

1 stop19h 05m

$615

IncheonSeattle

ICN - SEA

ICNSEA

Incheon Intl

Mon 4/14

6:20 pm-12:30 pm

Nonstop10h 10m

Seattle/Tacoma Intl

Wed 5/7

2:15 pm-5:55 pm

Nonstop11h 40m

$637

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Wed 4/16

7:20 pm-8:28 am

1 stop29h 08m

Portland

Thu 5/1

5:10 am-4:30 pm

1 stop19h 20m

$855

IncheonPortland

ICN - PDX

ICNPDX

Incheon Intl

Wed 6/4

8:25 pm-8:48 pm

1 stop16h 23m

Portland

Wed 7/9

2:50 pm-4:30 am

1 stop21h 40m

$879

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 38 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 $411). 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 March 28, 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.

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 March 28, 2025.
See what other customers who have flown with Korean Air, Japan Airlines and Asiana 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.
Korean Air
8.4
Very good
1,050 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Korean Air
8.4
Very good
1,050 reviews
Korean Air
8.4
Very good
1,050 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Japan Airlines
8.3
Very good
1,440 reviews
Korean Air
8.4
Very good
1,050 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Asiana Airlines
8.2
Very good
440 reviews
Korean Air
8.4
Very good
1,050 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Singapore Airlines
8.1
Very good
1,285 reviews
Korean Air
8.4
Very good
1,050 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.
Alaska Airlines
8.0
Very good
9,798 reviews
Korean Air
8.4
Very good
1,050 reviews

Food

8.1

Boarding

8.5

Entertainment

8.2

Crew

8.7

Overall

8.4

Comfort

8.3

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

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 Hainan Airlines ($405), WestJet ($409), and Air Canada ($479).

  • 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 (53%), Korean Air (53%), Etihad Airways (30%).

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

    On average you can expect to pay $2,101 for a flight from Incheon Intl Airport to State of Washington. The cheapest flight overall is $479 while the most popular route, (Incheon Intl - Seattle/Tacoma Intl) is currently priced at $487.

  • 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 $411). 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

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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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$538Average$718FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$595Average$779FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$615Average$887FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$643Average$998FlexibilityNo cancel feeOn-time76%
DeltaCheapest$668Average$1,140FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$684Average$1,188FlexibilityNo cancel feeOn-time81%
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