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Incheon Intl

$452+ Cheap flights from Washington to Incheon Intl (ICN)

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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheap flight deals from Washington to Incheon Intl

Keep the following information in mind while searching for Washington to Incheon Intl flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$861
(Kiwi.com)

One-way from

$452
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,078

Good round-trip deal

$787 or less

Good one-way deal

$516 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Seoul (SEL) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Seoul (SEL) flights.
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From Washington to Incheon Intl
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One-way flight from Washington to Incheon Intl
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Highest demand for flights based on searches. 19% potential increase in price ($296 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($38 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 Washington to Incheon Intl.
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Price to beat on a one-way flight from Washington to Incheon Intl.
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Find flight deals from Washington to Incheon Intl

Cheapest flights from Washington to Incheon Intl
Explore the most affordable flight options available from Washington to Incheon Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/236:50 amPDX - ICN
1 stop21h 40mMultiple Airlines
Mon 5/198:30 amICN - PDX
2 stops42h 46mMultiple Airlines
Deal found 3/26$861
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.
Thu 4/2411:00 amSEA - ICN
2 stops42h 30mMultiple Airlines
Thu 5/18:45 pmICN - SEA
1 stop15h 43mMultiple Airlines
Deal found 3/27$949
This Ovago 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/51:10 amSEA - ICN
1 stop26h 25mChina Airlines
Mon 5/1912:35 pmICN - SEA
1 stop22h 55mChina Airlines
Deal found 3/27$951
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/237:05 amSEA - ICN
1 stop19h 40mWestJet
Sun 5/258:45 pmICN - SEA
2 stops33h 24mWestJet
Deal found 3/27$959
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/141:30 amSEA - ICN
1 stop17h 30mEVA Air
Tue 5/612:00 pmICN - SEA
1 stop23h 30mEVA Air
Deal found 3/26$974
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/317:10 pmSEA - ICN
1 stop30h 30mTurkish Airlines
Tue 4/811:20 pmICN - SEA
1 stop33h 55mTurkish Airlines
Deal found 3/27$1,024
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/311:00 amSEA - ICN
2 stops42h 30mHainan Airlines
Wed 4/1610:35 pmICN - SEA
2 stops26h 25mHainan Airlines
Deal found 3/26$1,047
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/226:05 amPDX - ICN
2 stops37h 50mChina Eastern
Wed 5/218:55 amICN - PDX
2 stops23h 13mChina Eastern
Deal found 3/26$1,055
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:30 pmPDX - ICN
2 stops26h 35mCathay Pacific
Wed 9/171:40 pmICN - PDX
2 stops22h 51mCathay Pacific
Deal found 3/26$1,062
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/236:25 pmSEA - ICN
2 stops26h 15mCathay Pacific
Sun 4/271:40 pmICN - SEA
2 stops34h 25mCathay Pacific
Deal found 3/26$1,070
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.
Mon 9/110:10 amPDX - ICN
1 stop13h 55mAir Canada
Wed 9/105:45 pmICN - PDX
1 stop13h 01mAir Canada
Deal found 3/27$1,126
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/66:04 pmGEG - ICN
1 stop34h 26mMultiple Airlines
Tue 4/1512:45 pmICN - GEG
1 stop26h 17mMultiple Airlines
Deal found 3/26$1,131

Cheapflights Fare Finder

Customize your flight search to find flights from Washington to Incheon Intl 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 Washington to Incheon Intl Airport that are best for you.

Fly from

Washington

Fly to

Incheon Intl

Route

Depart

Return

Price

PortlandIncheon

PDX - ICN

PDXICN

Portland

Wed 4/23

6:50 am-8:30 pm

1 stop21h 40m

Incheon Intl

Mon 5/19

8:30 am-11:16 am

2 stops42h 46m

$861

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 4/24

11:00 am-9:30 pm

2 stops42h 30m

Incheon Intl

Thu 5/1

8:45 pm-8:28 pm

1 stop15h 43m

$949

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 4/5

1:10 am-7:35 pm

1 stop26h 25m

Incheon Intl

Mon 5/19

12:35 pm-7:30 pm

1 stop22h 55m

$951

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Fri 5/23

7:05 am-6:45 pm

1 stop19h 40m

Incheon Intl

Sun 5/25

8:45 pm-2:09 pm

2 stops33h 24m

$959

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/14

1:30 am-11:00 am

1 stop17h 30m

Incheon Intl

Tue 5/6

12:00 pm-7:30 pm

1 stop23h 30m

$974

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 3/31

7:10 pm-5:40 pm

1 stop30h 30m

Incheon Intl

Tue 4/8

11:20 pm-5:15 pm

1 stop33h 55m

$1,024

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 4/3

11:00 am-9:30 pm

2 stops42h 30m

Incheon Intl

Wed 4/16

10:35 pm-9:00 am

2 stops26h 25m

$1,047

PortlandIncheon

PDX - ICN

PDXICN

Portland

Tue 4/22

6:05 am-11:55 am

2 stops37h 50m

Incheon Intl

Wed 5/21

8:55 am-4:08 pm

2 stops23h 13m

$1,055

PortlandIncheon

PDX - ICN

PDXICN

Portland

Tue 9/9

7:30 pm-2:05 pm

2 stops26h 35m

Incheon Intl

Wed 9/17

1:40 pm-8:31 pm

2 stops22h 51m

$1,062

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 4/23

6:25 pm-12:40 pm

2 stops26h 15m

Incheon Intl

Sun 4/27

1:40 pm-8:05 am

2 stops34h 25m

$1,070

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 52 results
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Best time to book a flight from Washington to Incheon Intl

Have a flexible travel schedule? Discover the best time to fly to Incheon Intl from Washington 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 Washington to Incheon Intl Airport

What is the cheapest month to book a flight from State of Washington to Incheon Intl Airport?

Currently, February is the cheapest month in which you can book a flight from State of Washington to Incheon Intl Airport (average of $1,002). Flying from State of Washington to Incheon Intl Airport in June is currently the most expensive (average of $1,661). 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 WA to ICN?

Find hourly flight availability from Washington to Incheon Intl. 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 State of Washington to Incheon Intl Airport, 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 Incheon Intl by month

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

In terms of precipitation, rainfall in Incheon Intl Airport ranges from 0.8 - 10.2 inches per month. July is typically the wettest month, when rainfall can reach 10.2 in. January is typically the driest time to visit Incheon Intl Airport when rainfall is around 0.8 in.

Temperature in Incheon Intl by month

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

If weather is an important factor for your trip to Incheon Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 28.4 F).

Reviews of airlines servicing Incheon Intl

Get insights into the airlines that provide service to Incheon Intl. 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 Incheon Intl. Reviews last updated March 28, 2025.
Read reviews from past customers who have flown EVA Air, Korean Air and China Airlines from Washington to Seoul. 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
1,169 reviews

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
EVA Air
8.4
Very good
1,169 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Korean Air
8.4
Very good
1,050 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
China Airlines
8.2
Very good
722 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Delta
8.0
Very good
7,897 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.
Alaska Airlines
8.0
Very good
9,798 reviews
EVA Air
8.4
Very good
1,169 reviews

Entertainment

8.0

Overall

8.4

Comfort

8.3

Food

8.1

Boarding

8.4

Crew

8.6

Reviews

1 / 20
6.0
Good

Anonymous,Feb 2025

SFO - TPE

Inside plane was clean and chair was comfortable, but flight attendants serving coffee without giving me cream and sugar, even I ask he escape my request.

Related info for your journey

Find useful and relevant information for your journey from Washington to Incheon Intl. 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 State of Washington to Incheon Intl Airport flight route?

    Within the past month, 200 users have taken a look at flights from Washington to Incheon Intl.

  • What are the cheapest airlines to fly from State of Washington to Incheon Intl Airport one-way?

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at $455. Hainan Airlines flights start at $530 while deals on China Airlines start at $565 one-way.

  • What are the most popular routes from State of Washington to Incheon Intl Airport?

    While some choose either Portland - Incheon Intl or Pasco Tri Cities - Incheon Intl, Seattle/Tacoma Intl - Incheon Intl is the most popular route from State of Washington to Incheon Intl Airport.

  • What are the most reliable airlines from State of Washington to Incheon Intl Airport?

    Before booking your flight to Incheon Intl Airport from State of Washington, check out the most reliable airlines to get you to your destination on time: Korean Air (86%), Delta (79%), Etihad Airways( 72%).

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

    The cheapest flight price from State of Washington to Incheon Intl Airport is $437. On average you can expect to pay $2,028. The most popular route, (Seattle/Tacoma Intl - Incheon Intl), can usually be booked for $787.

  • Can I find deals for flights from Washington to Incheon Intl that include hotel bookings?

    Yes. In addition to deals on Washington to Incheon Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Incheon Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Incheon Intl.

  • Can I find deals for business class flights from Washington to Incheon Intl?

    Yes. Cheapflights offers flight deals from Washington to Incheon Intl 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 State of Washington to Incheon Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from State of Washington to Incheon Intl Airport (average of $1,002). Flying from State of Washington to Incheon Intl Airport in June is currently the most expensive (average of $1,661). 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.

See more FAQs

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Alternative routes for Washington to Incheon Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Washington to Incheon Intl

Discover the top 9 airlines that operate flights from Washington to Incheon Intl. 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
Hawaiian AirlinesCheapest$600Average$881FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$769Average$1,477FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$832Average$971FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$862Average$955FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$926Average$1,263FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$966Average$1,621FlexibilityNo cancel feeOn-time81%
Turkish AirlinesCheapest$970Average$1,250FlexibilityNo cancel feeOn-time77%
DeltaCheapest$983Average$1,359FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$986Average$1,089FlexibilityNo cancel feeOn-time74%
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