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$353+ 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 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$663
(Justfly.com)

One-way from

$353
(American Airlines)

Popular in

December

Cheapest in

February

Average price

$898
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. 7% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($44 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Alaska Airlines deal was found by Cheapflights users on 2/20. 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 10/147:30 amPDX - KIX
1 stop19h 15mAlaska Airlines
Mon 10/278:45 pmKIX - PDX
1 stop25h 15mAlaska Airlines
Deal found 2/20$647
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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.
Sun 9/145:45 amPDX - KIX
1 stop17h 05mANA
Tue 9/308:25 amKIX - PDX
2 stops22h 17mANA
Deal found 2/20$661
This Justfly.com deal was found by Cheapflights users on 2/20. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/177:47 amPDX - ITM
2 stops31h 38mANA
Thu 8/282:05 pmITM - PDX
2 stops16h 37mANA
Deal found 2/20$670
This United deal was found by Cheapflights users on 2/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/235:45 amPDX - KIX
1 stop17h 05mUnited Airlines
Thu 10/28:30 amKIX - PDX
2 stops31h 49mUnited Airlines
Deal found 2/20$674
This ANA deal was found by Cheapflights users on 2/20. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/126:30 pmPDX - KIX
2 stops22h 00mMultiple Airlines
Fri 5/164:50 pmKIX - PDX
1 stop17h 27mMultiple Airlines
Deal found 2/20$689
This Hawaiian Airlines deal was found by Cheapflights users on 2/19. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/2410:55 amPDX - KIX
1 stop15h 50mHawaiian Airlines
Sat 8/308:45 pmKIX - PDX
1 stop25h 15mHawaiian Airlines
Deal found 2/19$695
This Japan Airlines deal was found by Cheapflights users on 2/20. 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 Japan Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/261:30 pmSEA - ITM
2 stops27h 15mJapan Airlines
Tue 10/77:50 amITM - SEA
2 stops18h 35mJapan Airlines
Deal found 2/20$738
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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.
Wed 4/2311:30 pmSEA - KIX
1 stop28h 10mPhilippine Airlines
Wed 5/710:20 amKIX - SEA
1 stop25h 00mPhilippine Airlines
Deal found 2/20$740
This CrystalTravel deal was found by Cheapflights users on 2/19. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/227:33 pmSEA - KIX
2 stops20h 57mANA
Fri 5/24:50 pmKIX - SEA
1 stop15h 08mANA
Deal found 2/19$741
This oojo deal was found by Cheapflights users on 2/20. 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.
Sun 3/91:45 pmSEA - KIX
1 stop36h 00mAsiana Airlines
Wed 3/199:00 amKIX - SEA
1 stop18h 55mAsiana Airlines
Deal found 2/20$743
This Gotogate deal was found by Cheapflights users on 2/18. 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.
Tue 4/224:30 pmSEA - UKB
1 stop13h 15mANA
Thu 5/157:05 amUKB - SEA
1 stop23h 20mANA
Deal found 2/18$756
This United Airlines deal was found by Cheapflights users on 2/20. 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 10/143:41 pmPDX - ITM
2 stops33h 24mUnited Airlines
Tue 10/281:00 pmITM - PDX
2 stops23h 05mUnited Airlines
Deal found 2/20$757

Find flights from Washington to Osaka within your budget

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 February 20, 2025.

Fly from

Washington

Fly to

Osaka

Route

Depart

Return

Price

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Wed 4/23

7:54 am-2:50 pm

1 stop14h 56m

Osaka Kansai Intl

Wed 4/30

9:10 pm-2:58 pm

2 stops33h 48m

$663

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Wed 4/23

7:54 am-2:50 pm

1 stop14h 56m

Osaka Kansai Intl

Thu 5/8

4:50 pm-6:17 pm

1 stop17h 27m

$670

PortlandOsaka

PDX - ITM

PDXITM

Portland

Sun 8/17

7:47 am-7:25 am

2 stops31h 38m

Osaka Itami

Thu 8/28

2:05 pm-2:42 pm

2 stops16h 37m

$670

PortlandOsaka

PDX - ITM

PDXITM

Portland

Mon 4/21

6:00 am-6:40 pm

2 stops20h 40m

Osaka Itami

Thu 5/8

1:30 pm-4:19 pm

2 stops18h 49m

$672

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Mon 4/21

6:00 am-10:15 pm

2 stops24h 15m

Osaka Kansai Intl

Wed 5/7

6:45 am-4:19 pm

2 stops25h 34m

$688

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Mon 5/12

6:30 pm-8:30 am

2 stops22h 00m

Osaka Kansai Intl

Fri 5/16

4:50 pm-6:17 pm

1 stop17h 27m

$689

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 4/23

11:30 pm-7:40 pm

1 stop28h 10m

Osaka Kansai Intl

Wed 5/7

10:20 am-7:20 pm

1 stop25h 00m

$740

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 4/22

7:33 pm-8:30 am

2 stops20h 57m

Osaka Kansai Intl

Fri 5/2

4:50 pm-3:58 pm

1 stop15h 08m

$741

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 3/9

1:45 pm-5:45 pm

1 stop36h 00m

Osaka Kansai Intl

Wed 3/19

9:00 am-11:55 am

1 stop18h 55m

$743

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Tue 4/22

4:30 pm-9:45 pm

1 stop13h 15m

Kobe

Thu 5/15

7:05 am-2:25 pm

1 stop23h 20m

$756

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from Washington to Osaka

Get recent, data-driven insights about flights from Washington to Osaka including ideal travel times, pricing trends, and more.

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 $912). Flying from State of Washington to Osaka in December is currently the most expensive (average of $1,366). 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 February 20, 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 February 20, 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 ANA. 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
140 reviews

Comfort

9.0

Entertainment

9.1

Food

9.0

Overall

9.1

Crew

9.3

Boarding

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

STARLUX Airlines
9.1
Wonderful
140 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Comfort

9.0

Entertainment

9.1

Food

9.0

Overall

9.1

Crew

9.3

Boarding

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

EVA Air
8.4
Very good
1,200 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Comfort

9.0

Entertainment

9.1

Food

9.0

Overall

9.1

Crew

9.3

Boarding

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

ANA
8.4
Very good
842 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Comfort

9.0

Entertainment

9.1

Food

9.0

Overall

9.1

Crew

9.3

Boarding

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Korean Air
8.4
Very good
1,037 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Comfort

9.0

Entertainment

9.1

Food

9.0

Overall

9.1

Crew

9.3

Boarding

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Comfort

9.0

Entertainment

9.1

Food

9.0

Overall

9.1

Crew

9.3

Boarding

9.1

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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?

    $353 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Japan Airlines and United Airlines, with prices starting from $353 and $406, 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 $912). Flying from State of Washington to Osaka in December is currently the most expensive (average of $1,366). 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$648Average$958FlexibilityNo cancel feeOn-time76%
China EasternCheapest$719Average$756FlexibilityNo cancel feeOn-time62%
ANACheapest$780Average$1,356FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$837Average$964FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$850Average$1,274FlexibilityNo cancel feeOn-time79%
China AirlinesCheapest$864Average$1,061FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$918Average$1,053FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$930Average$1,058FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$975Average$1,327FlexibilityNo cancel feeOn-time81%
Hawaiian AirlinesCheapest$997Average$1,300FlexibilityNo cancel feeOn-time85%
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