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Osaka

$357+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSA
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
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 April 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$687
(Cheapflightsfares)

One-way from

$357
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$1,035
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 ($79 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 3, 2025.

This Justfly.com deal was found by Cheapflights users on 3/31. 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.
Wed 9/107:45 amPDX - KIX
1 stop15h 05mANA
Tue 9/166:45 amKIX - PDX
2 stops23h 57mANA
Deal found 3/31$564
This Alaska Airlines deal was found by Cheapflights users on 4/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/57:30 amPDX - KIX
1 stop18h 15mAlaska Airlines
Thu 11/278:45 pmKIX - PDX
1 stop16h 50mAlaska Airlines
Deal found 4/1$578
This United deal was found by Cheapflights users on 4/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/55:30 amPDX - KIX
1 stop17h 20mUnited Airlines
Fri 9/268:25 amKIX - PDX
2 stops31h 54mUnited Airlines
Deal found 4/1$580
This StudentUniverse deal was found by Cheapflights users on 3/31. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/910:29 amPDX - KIX
2 stops18h 31mKorean Air
Tue 9/1612:35 pmKIX - PDX
2 stops16h 44mKorean Air
Deal found 3/31$581
This Gotogate deal was found by Cheapflights users on 4/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:00 amPDX - KIX
1 stop19h 45mJapan Airlines
Tue 9/165:55 pmKIX - PDX
1 stop19h 35mJapan Airlines
Deal found 4/1$634
This American Airlines deal was found by Cheapflights users on 4/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/55:26 amPDX - KIX
2 stops21h 19mAmerican Airlines
Fri 9/265:55 pmKIX - PDX
2 stops21h 10mAmerican Airlines
Deal found 4/1$643
This Hawaiian Airlines deal was found by Cheapflights users on 3/31. 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.
Fri 9/197:35 amPDX - KIX
1 stop19h 10mHawaiian Airlines
Fri 9/268:45 pmKIX - PDX
1 stop25h 15mHawaiian Airlines
Deal found 3/31$654
This oojo deal was found by Cheapflights users on 4/1. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1512:50 pmSEA - UKB
1 stop36h 40mKorean Air
Mon 10/206:30 pmUKB - SEA
1 stop32h 10mKorean Air
Deal found 4/1$678
This Justfly.com deal was found by Cheapflights users on 4/1. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/237:45 amPDX - ITM
2 stops17h 20mANA
Tue 9/304:50 pmITM - PDX
2 stops37h 52mANA
Deal found 4/1$688
This United Airlines deal was found by Cheapflights users on 4/2. 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 9/95:30 amPDX - ITM
2 stops19h 35mMultiple Airlines
Tue 9/1610:00 amITM - PDX
2 stops18h 43mMultiple Airlines
Deal found 4/2$706
This KAYAK deal was found by Cheapflights users on 4/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/104:30 pmSEA - UKB
1 stop13h 15mANA
Wed 10/19:15 pmUKB - SEA
1 stop33h 10mANA
Deal found 4/1$707
This Gurufare deal was found by Cheapflights users on 4/1. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/75:10 pmPDX - UKB
2 stops24h 50mKorean Air
Thu 9/1111:00 amUKB - PDX
2 stops27h 20mKorean Air
Deal found 4/1$707

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 April 3, 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

Wed 4/30

9:12 am-9:00 pm

2 stops19h 48m

Osaka Kansai Intl

Wed 5/7

6:20 pm-4:08 pm

2 stops37h 48m

$621

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Sun 4/20

7:33 pm-2:50 pm

1 stop27h 17m

Osaka Kansai Intl

Mon 5/5

4:50 pm-2:54 pm

1 stop14h 04m

$690

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 4/8

2:15 pm-9:05 pm

1 stop14h 50m

Osaka Kansai Intl

Wed 5/7

11:10 am-12:30 pm

1 stop17h 20m

$733

PortlandOsaka

PDX - ITM

PDXITM

Portland

Fri 5/2

7:54 am-9:05 am

2 stops33h 11m

Osaka Itami

Sun 5/11

8:20 pm-6:17 pm

2 stops37h 57m

$741

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Thu 5/1

3:56 pm-2:50 pm

1 stop30h 54m

Osaka Kansai Intl

Thu 5/8

6:45 am-12:39 pm

2 stops21h 54m

$756

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 4/29

4:30 pm-8:05 am

1 stop23h 35m

Osaka Itami

Wed 5/14

6:00 pm-2:25 pm

1 stop12h 25m

$813

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Tue 4/29

4:30 pm-7:50 am

1 stop23h 20m

Kobe

Wed 5/14

7:05 am-2:25 pm

1 stop23h 20m

$820

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 4/23

7:15 am-2:50 pm

1 stop15h 35m

Osaka Kansai Intl

Wed 5/7

4:05 pm-9:31 pm

2 stops21h 26m

$824

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 4/29

12:50 pm-9:00 pm

1 stop16h 10m

Osaka Kansai Intl

Tue 5/13

9:05 am-8:49 pm

2 stops27h 44m

$832

PortlandOsaka

PDX - ITM

PDXITM

Portland

Sun 4/20

12:03 pm-11:35 am

2 stops31h 32m

Osaka Itami

Mon 5/5

8:30 am-6:41 pm

2 stops26h 11m

$865

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

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 $898). Flying from State of Washington to Osaka in December is currently the most expensive (average of $1,350). 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 April 3, 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 April 3, 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
147 reviews

Entertainment

9.0

Overall

9.1

Crew

9.3

Boarding

9.0

Food

8.9

Comfort

9.0

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
147 reviews
STARLUX Airlines
9.1
Wonderful
147 reviews

Entertainment

9.0

Overall

9.1

Crew

9.3

Boarding

9.0

Food

8.9

Comfort

9.0

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
1,170 reviews
STARLUX Airlines
9.1
Wonderful
147 reviews

Entertainment

9.0

Overall

9.1

Crew

9.3

Boarding

9.0

Food

8.9

Comfort

9.0

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
1,051 reviews
STARLUX Airlines
9.1
Wonderful
147 reviews

Entertainment

9.0

Overall

9.1

Crew

9.3

Boarding

9.0

Food

8.9

Comfort

9.0

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
147 reviews

Entertainment

9.0

Overall

9.1

Crew

9.3

Boarding

9.0

Food

8.9

Comfort

9.0

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
8.3
Very good
830 reviews
STARLUX Airlines
9.1
Wonderful
147 reviews

Entertainment

9.0

Overall

9.1

Crew

9.3

Boarding

9.0

Food

8.9

Comfort

9.0

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?

    $357 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Asiana Airlines and ANA, with prices starting from $401 and $405, 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 Portland - Osaka Kansai Intl 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 $898). Flying from State of Washington to Osaka in December is currently the most expensive (average of $1,350). 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 April 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$648Average$945FlexibilityNo cancel feeOn-time76%
China EasternCheapest$719Average$756FlexibilityNo cancel feeOn-time62%
ANACheapest$779Average$1,221FlexibilityNo cancel feeOn-time80%
United AirlinesCheapest$797Average$905FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$850Average$1,268FlexibilityNo cancel feeOn-time79%
China AirlinesCheapest$852Average$1,119FlexibilityNo cancel feeOn-time70%
Hawaiian AirlinesCheapest$886Average$1,479FlexibilityNo cancel feeOn-time85%
STARLUX AirlinesCheapest$918Average$1,075FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$971Average$1,242FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$975Average$1,273FlexibilityNo cancel feeOn-time81%

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