HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Kansai Intl

$294+ Cheap flights from Washington to Kansai Intl (KIX)

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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KIX
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Kansai Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington to Kansai Intl

Cheapest flights from Washington to Kansai Intl
Explore the most affordable flight options available from Washington to Kansai Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
Tue 12/3010:00 amSEA - KIX
1 stop33h 35mMultiple Airlines
Wed 1/149:10 pmKIX - SEA
2 stops34h 10mMultiple Airlines
Deal found 12/17$866
This Booking.com deal was found by Cheapflights users on 12/17. 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 12/303:40 pmSEA - KIX
1 stop23h 55mANA
Wed 1/149:10 pmKIX - SEA
1 stop33h 10mANA
Deal found 12/17$882
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/305:05 pmSEA - KIX
2 stops30h 35mUnited Airlines
Wed 1/148:20 amKIX - SEA
2 stops24h 24mUnited Airlines
Deal found 12/17$1,010
This KAYAK deal was found by Cheapflights users on 12/17. 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.
Wed 12/247:12 pmSEA - KIX
1 stop28h 28mANA
Sat 12/276:45 amKIX - SEA
1 stop23h 35mANA
Deal found 12/17$1,072
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/247:12 pmSEA - KIX
1 stop28h 28mUnited Airlines
Mon 12/296:35 pmKIX - SEA
2 stops21h 33mUnited Airlines
Deal found 12/17$1,216
This Alaska Airlines deal was found by Cheapflights users on 12/16. 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.
Fri 12/265:40 pmPDX - KIX
1 stop32h 05mMultiple Airlines
Sat 1/108:45 pmKIX - PDX
1 stop25h 46mMultiple Airlines
Deal found 12/16$1,287
This FlightHub deal was found by Cheapflights users on 12/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/267:30 amPDX - KIX
1 stop16h 10mANA
Sat 1/107:00 pmKIX - PDX
2 stops36h 48mANA
Deal found 12/15$1,295
This Travelocity deal was found by Cheapflights users on 12/17. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:30 amPDX - KIX
1 stop16h 10mMultiple Airlines
Thu 1/112:20 pmKIX - PDX
2 stops27h 39mMultiple Airlines
Deal found 12/17$1,323
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Fri 12/267:45 pmPDX - KIX
1 stop27h 55mUnited Airlines
Sat 1/106:35 pmKIX - PDX
1 stop17h 20mUnited Airlines
Deal found 12/17$1,421
This Mytrip deal was found by Cheapflights users on 12/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/169:30 pmSEA - KIX
1 stop41h 50mMultiple Airlines
Tue 12/232:30 pmKIX - SEA
1 stop20h 40mMultiple Airlines
Deal found 12/15$1,429
This KAYAK deal was found by Cheapflights users on 12/17. 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.
Wed 12/245:54 pmSEA - KIX
1 stop29h 46mANA
Fri 12/269:10 pmKIX - SEA
1 stop33h 10mANA
Deal found 12/17$1,481
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/241:35 pmSEA - KIX
1 stop34h 05mUnited Airlines
Tue 12/308:20 amKIX - SEA
2 stops25h 32mUnited Airlines
Deal found 12/17$1,522

Find flight deals from Washington to Kansai Intl

Keep the following information in mind while searching for Washington to Kansai Intl flight deals. Data was last updated December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$608
(Air Canada)

One-way from

$294
(Air Canada)

Popular in

December

Cheapest in

January

Average price

$1,273
Provider with most accurate pricing for Seattle/Tacoma Intl-Osaka (OSA) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Osaka (OSA) flights.
Search Deals
From Washington to Osaka Kansai Intl
Search Deals
One-way flight from Washington to Osaka Kansai Intl
Search Deals
Highest demand for flights based on searches. 2% potential increase in price ($22 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Kansai 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 December 18, 2025.
Use the filters below to find and compare flights from Washington to Osaka Kansai Intl Airport that are best for you.

Fly from

Washington

Fly to

Kansai Intl

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 4/16

12:50 pm-9:00 pm

1 stop16h 10m

Osaka Kansai Intl

Thu 4/30

9:05 am-10:40 am

1 stop17h 35m

$662

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 1/10

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

Fri 1/23

6:35 pm-9:12 pm

1 stop19h 37m

$662

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 1/15

6:00 am-6:50 pm

1 stop19h 50m

Osaka Kansai Intl

Thu 1/22

7:00 am-9:55 am

1 stop19h 55m

$663

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 3/2

11:00 am-8:45 pm

1 stop16h 45m

Osaka Kansai Intl

Fri 3/13

11:55 am-10:00 am

1 stop14h 05m

$666

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 4/16

7:20 am-9:00 pm

2 stops21h 40m

Osaka Kansai Intl

Thu 4/23

9:05 am-10:40 am

1 stop17h 35m

$667

PascoOsaka

PSC - KIX

PSCKIX

Pasco Tri Cities

Fri 1/30

6:00 am-4:40 pm

1 stop17h 40m

Osaka Kansai Intl

Fri 2/6

6:35 pm-9:10 pm

1 stop19h 35m

$668

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 1/13

5:12 pm-4:40 pm

2 stops30h 28m

Osaka Kansai Intl

Wed 1/21

6:35 pm-6:27 pm

1 stop16h 52m

$673

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 4/10

7:20 am-9:00 pm

2 stops21h 40m

Osaka Kansai Intl

Sun 4/19

12:35 pm-4:18 pm

2 stops19h 43m

$673

PascoOsaka

PSC - KIX

PSCKIX

Pasco Tri Cities

Sat 1/31

6:05 am-4:40 pm

1 stop17h 35m

Osaka Kansai Intl

Sat 2/7

6:35 pm-9:13 pm

2 stops43h 38m

$675

PascoOsaka

PSC - KIX

PSCKIX

Pasco Tri Cities

Sat 1/31

5:05 am-8:45 pm

2 stops22h 40m

Osaka Kansai Intl

Sat 2/7

9:00 am-4:23 pm

2 stops24h 23m

$676

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 41 results
1
2
3
...
5

Best time to book a flight from Washington to Kansai Intl

Have a flexible travel schedule? Discover the best time to fly to Kansai 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 Osaka Kansai Intl Airport

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to Osaka Kansai Intl Airport (average of $370). Flying from State of Washington to Osaka Kansai Intl Airport in June is currently the most expensive (average of $983). 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 KIX?

Find hourly flight availability from Washington to Kansai Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

It’s optimal to fly from State of Washington to Osaka Kansai Intl Airport in the evening. By choosing this option you can save up to 31% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from State of Washington to Osaka Kansai Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Washington to Kansai Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their State of Washington to Osaka Kansai Intl Airport flight should consider departing on Thursday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Washington to Kansai 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 Osaka Kansai Intl Airport?

    A quick flight from State of Washington to Osaka Kansai Intl Airport can take about 16h 10m. Korean Air provides one of the quickest options available for as low as $662. Airlines will cover a distance of 5024 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The cheapest airline one-way is Asiana Airlines, with whom users have recently found tickets for as low as $304. However, be on the lookout for offers from ANA and Korean Air, as they are both options that can get you from State of Washington to Osaka Kansai Intl Airport for a low price.

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

    The most popular flight routes from State of Washington to Osaka Kansai Intl Airport are Seattle/Tacoma Intl - Osaka Kansai Intl, Portland - Osaka Kansai Intl and Pasco Tri Cities - Osaka Kansai Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington to Kansai 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 Osaka Kansai Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Osaka Kansai Intl Airport (average of $370). Flying from State of Washington to Osaka Kansai Intl Airport in June is currently the most expensive (average of $983). 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 Osaka Kansai Intl Airport?

Book flights to Osaka Kansai Intl Airport if you plan to visit one of these locations
Nara
Izumisano
Himeji

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Kansai Intl

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Kansai Intl flights
San Francisco to Kansai Intl flights
Los Angeles to Osaka Itami flights
Los Angeles to Kobe flights
Honolulu to Kansai Intl flights
John F Kennedy Intl to Kansai Intl flights
Seattle to Kansai Intl flights
San Francisco to Osaka Itami flights
John F Kennedy Intl to Osaka Itami flights
Ontario to Kansai Intl flights
Newark to Kansai Intl flights
Seattle to Osaka Itami flights
John F Kennedy Intl to Kobe flights
Newark to Osaka Itami flights
Dallas/Fort Worth to Kansai Intl flights
Seattle to Kobe flights
San Francisco to Kobe flights
LaGuardia to Kansai Intl flights
Honolulu to Osaka Itami flights
Dallas/Fort Worth to Osaka Itami flights
Hobby to Kansai Intl flights
Dulles Intl to Kansai Intl flights
LaGuardia to Osaka Itami flights
Boston to Kansai Intl flights
Denver to Kansai Intl flights
Santa Ana to Kansai Intl flights
Dulles Intl to Osaka Itami flights
Denver to Osaka Itami flights
Dallas/Fort Worth to Kobe flights
Portland to Kansai Intl flights
O'Hare Intl to Osaka Itami flights
Las Vegas to Kansai Intl flights
Love Field to Kansai Intl flights
Atlanta to Osaka Itami flights
Atlanta to Kansai Intl flights
Portland to Osaka Itami flights
George Bush Intcntl to Kansai Intl flights
Boston to Osaka Itami flights
Pittsburgh to Kansai Intl flights
San Jose to Kansai Intl flights
Reagan-National to Kansai Intl flights
San Diego to Osaka Itami flights
Baltimore to Kansai Intl flights
Pittsburgh to Osaka Itami flights
O'Hare Intl to Kansai Intl flights
Orlando to Kansai Intl flights
Honolulu to Kobe flights

Top 8 airlines flying from Washington to Kansai Intl

Discover the top 8 airlines that operate flights from Washington to Kansai 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$370Average$438FlexibilityNo cancel feeOn-time75%
Asiana AirlinesCheapest$595Average$762FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$647Average$983FlexibilityNo cancel feeOn-time69%
ANACheapest$657Average$824FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$669Average$802FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$716Average$976FlexibilityNo cancel feeOn-time81%
China AirlinesCheapest$1,056Average$1,167FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$1,095Average$1,294FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.