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Incheon Intl

$374+ 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
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 July 30, 2025.

Round-trip from

$720
(Air Canada)

One-way from

$377
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,334

Good round-trip deal

$739 or less

Good one-way deal

$379 or less
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. 12% potential increase in price ($165 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($33 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 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 July 30, 2025.

This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/157:40 pmPDX - ICN
1 stop28h 25mMultiple Airlines
Wed 10/159:45 amICN - PDX
2 stops25h 01mMultiple Airlines
Deal found 7/29$720
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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.
Thu 9/47:40 amPDX - ICN
1 stop19h 20mAlaska Airlines
Mon 9/89:25 pmICN - PDX
1 stop17h 15mAlaska Airlines
Deal found 7/30$786
This FlightHub deal was found by Cheapflights users on 7/30. 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.
Sat 8/302:30 pmSEA - ICN
Nonstop11h 25mAsiana Airlines
Sat 9/66:20 pmICN - SEA
Nonstop10h 10mAsiana Airlines
Deal found 7/30$823
This Air Canada deal was found by Cheapflights users on 7/30. 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 9/2510:00 amSEA - ICN
1 stop14h 05mMultiple Airlines
Wed 10/2210:35 amICN - SEA
2 stops19h 41mMultiple Airlines
Deal found 7/30$824
This oojo deal was found by Cheapflights users on 7/30. 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.
Thu 9/2512:50 pmSEA - ICN
Nonstop11h 50mKorean Air
Wed 10/224:40 pmICN - SEA
Nonstop10h 00mKorean Air
Deal found 7/30$825
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1510:00 amPDX - ICN
1 stop14h 05mAir Canada
Wed 10/155:45 pmICN - PDX
1 stop13h 01mAir Canada
Deal found 7/28$828
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/307:15 pmSEA - ICN
1 stop28h 50mAir Canada
Mon 9/85:45 pmICN - SEA
1 stop16h 51mAir Canada
Deal found 7/29$835
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.
Thu 9/182:50 pmSEA - ICN
Nonstop11h 45mAlaska Airlines
Sun 11/28:35 pmICN - SEA
Nonstop10h 20mAlaska Airlines
Deal found 7/28$842
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:20 amSEA - ICN
1 stop18h 00mDelta
Sun 11/24:10 pmICN - SEA
Nonstop9h 50mDelta
Deal found 7/29$846
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/17:35 pmPDX - ICN
1 stop16h 45mUnited Airlines
Sun 9/284:50 pmICN - PDX
1 stop23h 38mUnited Airlines
Deal found 7/29$861
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1511:42 amPDX - ICN
1 stop35h 48mAmerican Airlines
Wed 10/155:25 pmICN - PDX
1 stop18h 18mAmerican Airlines
Deal found 7/29$868
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/131:10 amSEA - ICN
1 stop26h 25mChina Airlines
Tue 10/288:15 pmICN - SEA
1 stop14h 55mChina Airlines
Deal found 7/29$870

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 July 30, 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

Mon 9/15

7:40 pm-4:05 pm

1 stop28h 25m

Incheon Intl

Wed 10/15

9:45 am-6:46 pm

2 stops25h 01m

$720

PortlandIncheon

PDX - ICN

PDXICN

Portland

Thu 9/4

7:40 am-7:00 pm

1 stop19h 20m

Incheon Intl

Mon 9/8

9:25 pm-10:40 pm

1 stop17h 15m

$786

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 8/30

2:30 pm-5:55 pm

Nonstop11h 25m

Incheon Intl

Sat 9/6

6:20 pm-12:30 pm

Nonstop10h 10m

$823

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 9/25

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

Wed 10/22

10:35 am-2:16 pm

2 stops19h 41m

$824

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 9/25

12:50 pm-4:40 pm

Nonstop11h 50m

Incheon Intl

Wed 10/22

4:40 pm-10:40 am

Nonstop10h 00m

$825

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 9/15

10:00 am-4:05 pm

1 stop14h 05m

Incheon Intl

Wed 10/15

5:45 pm-2:46 pm

1 stop13h 01m

$828

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sat 8/30

7:15 pm-4:05 pm

1 stop28h 50m

Incheon Intl

Mon 9/8

5:45 pm-6:36 pm

1 stop16h 51m

$835

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Thu 9/18

2:50 pm-6:35 pm

Nonstop11h 45m

Incheon Intl

Mon 11/3

8:35 pm-1:55 pm

Nonstop10h 20m

$842

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Sun 9/21

7:20 am-5:20 pm

1 stop18h 00m

Incheon Intl

Sun 11/2

4:10 pm-10:00 am

Nonstop9h 50m

$846

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 9/1

7:35 pm-4:20 am

1 stop16h 45m

Incheon Intl

Sun 9/28

4:50 pm-12:28 am

1 stop23h 38m

$861

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 54 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 $998). Flying from State of Washington to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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 July 30, 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.

Weekly flight availability from State of Washington to Incheon Intl Airport

Explore weekly flight availability from Washington to Incheon Intl. 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 30, 2025.

The most flights from USWA to ICN are scheduled on a Monday (9 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (6 on average).

How much does it cost to fly round-trip from State of Washington to Incheon Intl Airport?

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 July 30, 2025.
See what other customers who have flown with EVA Air, Korean Air, and China Airlines from Washington to Incheon Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

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
1,222 reviews
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

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
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

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
China Airlines
8.3
Very good
754 reviews
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

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
467 reviews
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

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
Delta
8.0
Very good
7,980 reviews
EVA Air
8.4
Very good
1,222 reviews

Boarding

8.4

Comfort

8.3

Crew

8.6

Overall

8.4

Food

8.1

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 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 $388. Asiana Airlines flights start at $410 while deals on Delta start at $432 one-way.

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

    While some choose either Portland - Incheon Intl or Wenatchee Pangborn Field - 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: Delta (77%), Korean Air (71%), Thai Airways( 38%).

  • 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 $350. On average you can expect to pay $1,971. The most popular route, (Seattle/Tacoma Intl - Incheon Intl), can usually be booked for $739.

  • 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 $998). Flying from State of Washington to Incheon Intl Airport in December is currently the most expensive (average of $1,635). 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

Traveling to a place near Incheon Intl Airport?

Book flights to Incheon Intl Airport if you plan to visit one of these locations
Suwon
Seongnam
Daejeon

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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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Ontario to Incheon Intl flights
LaGuardia to Gimpo Intl flights
Dulles Intl to Gimpo Intl flights
Reagan-National to Incheon Intl flights
Baltimore to Incheon Intl flights
Dallas/Fort Worth to Gimpo Intl flights
Honolulu to Incheon Intl flights
San Jose to Incheon Intl flights
Las Vegas to Incheon Intl flights
Oakland to Incheon Intl flights
Minneapolis to Incheon Intl flights
George Bush Intcntl to Incheon Intl flights
O'Hare Intl to Gimpo Intl flights
Santa Ana to Incheon Intl flights
Orlando to Incheon Intl flights
Burbank to Incheon Intl flights
Detroit to Incheon Intl flights
Denver to Incheon Intl flights
Reagan-National to Gimpo Intl flights
Salt Lake City to Incheon Intl flights
Philadelphia to Incheon Intl flights
Baltimore to Gimpo Intl flights
Charlotte to Incheon Intl flights
Raleigh to Incheon Intl flights
Boston to Gimpo Intl flights
Atlanta to Gimpo Intl flights
Midway to Incheon Intl flights
George Bush Intcntl to Gimpo Intl flights
San Jose to Gimpo Intl flights
Honolulu to Gimpo Intl flights
Las Vegas to Gimpo Intl flights

Top 10 airlines flying from Washington to Incheon Intl

Discover the top 10 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 July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$167Average$1,242FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$182Average$1,099FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$282Average$865FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$763Average$1,550FlexibilityNo cancel feeOn-time85%
Air CanadaCheapest$812Average$907FlexibilityNo cancel feeOn-time67%
China AirlinesCheapest$886Average$1,070FlexibilityNo cancel feeOn-time70%
Asiana AirlinesCheapest$901Average$1,153FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$954Average$1,529FlexibilityNo cancel feeOn-time81%
EVA AirCheapest$978Average$1,090FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$1,007Average$1,217FlexibilityNo cancel feeOn-time77%

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