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Incheon Intl

$333+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — ICN
Mar 18 — Mar 251
Wed 3/18
Wed 3/25
1 adult, Economy
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Cheap 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 February 16, 2026.

This CheapOair deal was found by Cheapflights users on 2/13. 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 3/309:50 am
PDX
-
ICN
1 stop14h 15m
Multiple Airlines
Mon 6/18:40 pm
ICN
-
PDX
2 stops28h 50m
Multiple Airlines
Deal found 2/13$636
This CheapOair deal was found by Cheapflights users on 2/13. 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.
Sun 4/263:40 pm
SEA
-
ICN
1 stop32h 25m
Multiple Airlines
Wed 5/68:40 pm
ICN
-
SEA
2 stops28h 35m
Multiple Airlines
Deal found 2/13$641
This CheapOair deal was found by Cheapflights users on 2/13. 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 3/237:05 pm
PDX
-
ICN
1 stop29h 10m
Multiple Airlines
Sun 5/108:40 pm
ICN
-
PDX
2 stops28h 50m
Multiple Airlines
Deal found 2/13$650
This Booking.com deal was found by Cheapflights users on 2/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/185:40 am
SEA
-
ICN
1 stop18h 35m
Air Canada
Mon 3/235:55 pm
ICN
-
SEA
1 stop21h 02m
Air Canada
Deal found 2/12$667
This Booking.com deal was found by Cheapflights users on 2/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/95:40 am
SEA
-
ICN
1 stop18h 25m
Air Canada
Tue 4/215:45 pm
ICN
-
SEA
1 stop21h 05m
Air Canada
Deal found 2/15$670
This Booking.com deal was found by Cheapflights users on 2/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/78:00 pm
SEA
-
ICN
1 stop28h 05m
Air Canada
Tue 4/215:45 pm
ICN
-
SEA
1 stop21h 05m
Air Canada
Deal found 2/12$672
This CheapOair deal was found by Cheapflights users on 2/15. 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.
Fri 4/108:00 pm
SEA
-
ICN
1 stop28h 05m
Multiple Airlines
Thu 4/238:40 pm
ICN
-
SEA
2 stops28h 55m
Multiple Airlines
Deal found 2/15$673
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Thu 3/1211:05 am
SEA
-
ICN
2 stops41h 30m
Hainan Airlines
Wed 3/259:40 pm
ICN
-
SEA
2 stops27h 25m
Hainan Airlines
Deal found 2/13$674
This CheapOair deal was found by Cheapflights users on 2/13. 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.
Thu 4/309:50 am
PDX
-
ICN
1 stop14h 15m
Multiple Airlines
Thu 5/288:40 pm
ICN
-
PDX
2 stops28h 50m
Multiple Airlines
Deal found 2/13$676
This Booking.com deal was found by Cheapflights users on 2/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:30 am
SEA
-
ICN
2 stops19h 10m
Multiple Airlines
Thu 11/56:55 pm
ICN
-
SEA
1 stop16h 31m
Multiple Airlines
Deal found 2/15$679
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2011:45 am
SEA
-
ICN
1 stop18h 40m
Cathay Pacific
Mon 5/48:00 am
ICN
-
SEA
1 stop18h 05m
Cathay Pacific
Deal found 2/12$683
This CheapOair deal was found by Cheapflights users on 2/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/127:05 pm
PDX
-
ICN
1 stop29h 00m
Multiple Airlines
Sat 4/258:40 pm
ICN
-
PDX
2 stops37h 50m
Multiple Airlines
Deal found 2/12$683

Find 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 February 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$636
(CheapOair)

One-way from

$333
(flugladen.de)

Popular in

July

Cheapest in

November

Average price

$870

Good round-trip deal

$675 or less

Good one-way deal

$358 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Seoul (SEL) flights.
Search Deals
From Washington to Incheon Intl
Search Deals
One-way flight from Washington to Incheon Intl
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($153 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Washington to Incheon Intl.
Search Deals
Price to beat on a one-way flight from Washington to Incheon Intl.
Search Deals

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 February 16, 2026.
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

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Wed 4/15

11:45 am-12:25 am

1 stop20h 40m

Incheon Intl

Wed 4/29

8:00 am-10:05 am

1 stop18h 05m

$698

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sun 4/5

7:05 pm-4:05 pm

1 stop29h 00m

Incheon Intl

Wed 4/15

2:30 am-9:10 am

2 stops22h 40m

$728

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 4/13

9:50 am-4:05 pm

1 stop14h 15m

Incheon Intl

Wed 4/22

1:55 am-2:40 pm

2 stops28h 45m

$805

SeattleIncheon

SEA - ICN

SEAICN

Seattle/Tacoma Intl

Mon 4/27

7:40 am-12:25 am

2 stops24h 45m

Incheon Intl

Tue 5/5

1:40 pm-10:05 am

1 stop36h 25m

$820

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 3/30

7:05 pm-4:05 pm

1 stop29h 00m

Incheon Intl

Mon 6/1

5:45 pm-7:05 pm

1 stop17h 20m

$829

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 3/9

7:05 pm-4:15 pm

1 stop29h 10m

Incheon Intl

Mon 6/1

5:45 pm-2:45 pm

1 stop13h 00m

$829

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 4/20

9:50 am-4:05 pm

1 stop14h 15m

Incheon Intl

Mon 5/11

5:45 pm-7:05 pm

1 stop17h 20m

$829

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 3/7

6:00 am-6:35 pm

1 stop19h 35m

Incheon Intl

Sun 3/15

8:35 pm-9:10 pm

1 stop16h 35m

$837

PortlandIncheon

PDX - ICN

PDXICN

Portland

Sat 4/4

7:05 pm-4:05 pm

1 stop29h 00m

Incheon Intl

Thu 4/16

5:45 pm-6:30 pm

1 stop16h 45m

$873

PortlandIncheon

PDX - ICN

PDXICN

Portland

Mon 3/2

7:05 pm-5:10 pm

1 stop29h 05m

Incheon Intl

Fri 3/6

6:55 pm-2:40 pm

1 stop12h 45m

$873

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

Showing 1-10 of 60 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, April is the cheapest month in which you can book a flight from State of Washington to Incheon Intl Airport (average of $335). Flying from State of Washington to Incheon Intl Airport in December is currently the most expensive (average of $766). 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 February 16, 2026.

A simple way to save on the total cost of your ticket is to fly from State of Washington to Incheon Intl Airport in the evening. If you’re flexible enough to do this you can expect to save up to 49% on your trip compared to booking a flight in the afternoon.

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 February 16, 2026.

The most flights from USWA to ICN are scheduled on a Saturday (11 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (6 on average).

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 long is the flight from State of Washington to Incheon Intl Airport?

    Airlines like Cathay Pacific, Air Canada, and Delta fly from State of Washington to Incheon Intl Airport in about 11h 50m. The time it takes to get you to your destination can typically vary by up to 17h 10m. The distance between State of Washington and Incheon Intl Airport is about 5200 mi. This flight may include one or multiple stops.

  • 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 Hawaiian Airlines, which is currently one of the cheapest options available, starting at $160. Alaska Airlines flights start at $182 while deals on Asiana Airlines start at $414 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: Thai Airways (83%), Asiana Airlines (83%), United Airlines( 83%).

  • 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 $307. On average you can expect to pay $1,235. The most popular route, (Seattle/Tacoma Intl - Incheon Intl), can usually be booked for $613.

  • 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, April is the cheapest month in which you can book a flight from State of Washington to Incheon Intl Airport (average of $335). Flying from State of Washington to Incheon Intl Airport in December is currently the most expensive (average of $766). 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

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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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Dulles Intl to Gimpo Intl flights
Minneapolis to Incheon Intl flights
Las Vegas to Incheon Intl flights
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Dallas/Fort Worth to Gimpo Intl flights
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Portland to Incheon Intl flights
Baltimore to Gimpo Intl flights
O'Hare Intl to Gimpo Intl flights
Raleigh to Incheon Intl flights
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Salt Lake City to Incheon Intl flights
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Atlanta to Gimpo Intl flights
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Burbank to Incheon Intl flights
Miami to Incheon Intl flights
Philadelphia to Incheon Intl flights
LaGuardia to Gimpo Intl flights
Midway to Incheon Intl flights
Sky Harbor Intl to Incheon Intl flights
Boston to Gimpo Intl flights
Honolulu to Gimpo Intl flights
Tampa to Incheon Intl flights
Charlotte to Incheon 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 February 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$212Average$1,136FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$282Average$660FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$282Average$840FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$335Average$338FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$531Average$949FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$710Average$990FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$843Average$1,503FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$869Average$1,132FlexibilityNo cancel feeOn-time70%
EVA AirCheapest$978Average$1,089FlexibilityNo cancel feeOn-time74%
Turkish AirlinesCheapest$995Average$1,207FlexibilityNo cancel feeOn-time77%

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