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Osaka

$407+ Cheap flights from Washington to Osaka (OSA)

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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSA
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Washington to Osaka

Keep the following information in mind while searching for Washington to Osaka flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$651
(Bravofly)

One-way from

$407
(FlightHub)

Popular in

December

Cheapest in

February

Average price

$1,080
Provider with most accurate pricing for Seattle/Tacoma Intl-Osaka (OSA) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Osaka (OSA) flights.
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From Washington to Osaka (OSA)
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One-way flight from Washington to Osaka (OSA)
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Highest demand for flights based on searches. 6% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Washington to Osaka

Cheapest flights from Washington to Osaka
Explore the most affordable flight options available from Washington to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Bravofly deal was found by Cheapflights users on 4/30. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/99:10 amPDX - KIX
2 stops19h 50mKorean Air
Tue 9/169:05 amKIX - PDX
2 stops20h 14mKorean Air
Deal found 4/30$651
This Bravofly deal was found by Cheapflights users on 4/30. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/910:40 amPDX - KIX
1 stop16h 05mHawaiian Airlines
Tue 9/168:45 pmKIX - PDX
1 stop35h 30mHawaiian Airlines
Deal found 4/30$660
This Bravofly deal was found by Cheapflights users on 4/30. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:45 amPDX - ITM
2 stops32h 20mANA
Tue 9/162:05 pmITM - PDX
2 stops16h 37mANA
Deal found 4/30$673
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:45 amPDX - KIX
1 stop15h 05mANA
Tue 9/164:50 pmKIX - PDX
1 stop13h 52mANA
Deal found 5/1$689
This Gurufare deal was found by Cheapflights users on 4/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/95:10 pmPDX - UKB
2 stops32h 20mKorean Air
Tue 9/1611:00 amUKB - PDX
2 stops18h 19mKorean Air
Deal found 4/30$690
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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.
Tue 9/97:35 amPDX - KIX
1 stop19h 10mAlaska Airlines
Tue 9/168:45 pmKIX - PDX
1 stop17h 55mAlaska Airlines
Deal found 4/30$701
This United Airlines deal was found by Cheapflights users on 5/1. 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 9/165:30 amPDX - KIX
1 stop17h 20mUnited Airlines
Tue 9/238:25 amKIX - PDX
2 stops32h 20mUnited Airlines
Deal found 5/1$704
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Sun 9/77:45 amPDX - ITM
2 stops17h 20mUnited Airlines
Sat 9/2712:00 pmITM - PDX
2 stops16h 43mUnited Airlines
Deal found 4/29$707
This Delta deal was found by Cheapflights users on 5/1. 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.
Tue 9/97:10 amPDX - KIX
2 stops21h 50mDelta
Tue 9/1612:35 pmKIX - PDX
2 stops22h 38mDelta
Deal found 5/1$715
This oojo deal was found by Cheapflights users on 4/29. 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.
Tue 10/212:15 pmSEA - KIX
1 stop27h 35mAsiana Airlines
Wed 10/2911:10 amKIX - SEA
1 stop17h 25mAsiana Airlines
Deal found 4/29$723
This Air Canada deal was found by Cheapflights users on 4/30. 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.
Mon 9/155:30 amSEA - KIX
1 stop18h 55mAir Canada
Mon 9/296:05 pmKIX - SEA
1 stop20h 11mAir Canada
Deal found 4/30$750
This Trip.com deal was found by Cheapflights users on 4/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/211:55 pmSEA - KIX
1 stop26h 15mPhilippine Airlines
Sun 11/169:55 amKIX - SEA
1 stop26h 40mPhilippine Airlines
Deal found 4/29$754

Cheapflights Fare Finder

Customize your flight search to find flights from Washington to Osaka 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 May 1, 2025.
Use the filters below to find and compare flights from Washington to Osaka that are best for you.

Fly from

Washington

Fly to

Osaka

Route

Depart

Return

Price

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Tue 9/9

9:10 am-9:00 pm

2 stops19h 50m

Osaka Kansai Intl

Tue 9/16

9:05 am-1:19 pm

2 stops20h 14m

$651

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Tue 9/9

10:40 am-6:45 pm

1 stop16h 05m

Osaka Kansai Intl

Tue 9/16

8:45 pm-4:15 pm

1 stop35h 30m

$660

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Tue 9/9

7:45 am-2:50 pm

1 stop15h 05m

Osaka Kansai Intl

Tue 9/16

4:50 pm-2:42 pm

1 stop13h 52m

$689

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Tue 9/9

7:35 am-6:45 pm

1 stop19h 10m

Osaka Kansai Intl

Tue 9/16

8:45 pm-10:40 pm

1 stop17h 55m

$701

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Tue 9/16

5:30 am-2:50 pm

1 stop17h 20m

Osaka Kansai Intl

Tue 9/23

8:25 am-12:45 am

2 stops32h 20m

$704

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Tue 9/9

7:10 am-9:00 pm

2 stops21h 50m

Osaka Kansai Intl

Tue 9/16

12:35 pm-7:13 pm

2 stops22h 38m

$715

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Tue 10/7

7:40 pm-4:25 pm

1 stop28h 45m

Osaka Kansai Intl

Tue 10/14

6:05 pm-12:43 pm

2 stops34h 38m

$764

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 10/21

4:30 pm-7:25 am

1 stop22h 55m

Osaka Itami

Wed 11/5

6:00 pm-1:20 pm

1 stop12h 20m

$815

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Mon 9/1

7:15 pm-6:55 pm

2 stops31h 40m

Osaka Itami

Tue 9/16

2:05 pm-1:05 pm

2 stops15h 00m

$817

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 10/7

6:45 am-5:05 pm

2 stops42h 20m

Osaka Itami

Wed 10/22

12:00 pm-2:25 pm

1 stop18h 25m

$837

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Osaka

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

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

Currently, February is the cheapest month in which you can book a flight from State of Washington to Osaka (average of $893). Flying from State of Washington to Osaka in December is currently the most expensive (average of $1,336). 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 OSA?

Find hourly flight availability from Washington to Osaka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 1, 2025.

When flying from State of Washington to Osaka, 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 Osaka by month

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

In terms of precipitation, rainfall in Osaka ranges from 1.6 - 7.9 inches per month. June is typically the wettest month, when rainfall can reach 7.9 in. January is typically the driest time to visit Osaka when rainfall is around 1.6 in.

Temperature in Osaka by month

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

If weather is an important factor for your trip to Osaka, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

Reviews of airlines servicing Osaka

Get insights into the airlines that provide service to Osaka. 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 Osaka. Reviews last updated May 1, 2025.
To help decide which airline to fly from Washington to Osaka, see what other customers have to say about STARLUX Airlines, EVA Air and Korean Air. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
161 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,186 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,068 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Japan Airlines
8.3
Very good
1,464 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Food

8.9

Boarding

9.0

Crew

9.3

Entertainment

9.0

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Related info for your journey

Find useful and relevant information for your journey from Washington to Osaka. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    $407 is the cheapest one-way deal found within the past few days, from Asiana Airlines. You may also be able to find cheap deals on Air Canada and Japan Airlines, with prices starting from $437 and $469, respectively.

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

    Most travelers choose Seattle/Tacoma Intl - Osaka Kansai Intl, Seattle/Tacoma Intl - Osaka Itami or Seattle/Tacoma Intl - Kobe when deciding on the best route from State of Washington to Osaka.

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

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

  • How can I find direct flights from Washington to Osaka?

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

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

    Yes. Cheapflights offers flight deals from Washington to Osaka 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?

    Currently, February is the cheapest month in which you can book a flight from State of Washington to Osaka (average of $893). Flying from State of Washington to Osaka in December is currently the most expensive (average of $1,336). 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 Washington?

Book flights to Washington if you plan to visit one of these locations
Nara
Nishinomiya

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Alternative routes for Washington to Osaka

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Osaka

Discover the top 10 airlines that operate flights from Washington to Osaka. 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$648Average$922FlexibilityNo cancel feeOn-time76%
ANACheapest$672Average$1,059FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$716Average$1,228FlexibilityNo cancel feeOn-time81%
China EasternCheapest$719Average$756FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$797Average$905FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$802Average$1,132FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$850Average$1,243FlexibilityNo cancel feeOn-time79%
STARLUX AirlinesCheapest$918Average$1,105FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$931Average$1,140FlexibilityNo cancel feeOn-time70%
Hawaiian AirlinesCheapest$997Average$1,479FlexibilityNo cancel feeOn-time85%

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