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Osaka

$359+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$669
(Air Canada)

One-way from

$383
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,178
From Washington to Osaka (OSA)
Search Deals
One-way flight from Washington to Osaka (OSA)
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Highest demand for flights based on searches. 4% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/11. 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.
Wed 10/1510:00 amSEA - KIX
1 stop14h 25mAir Canada
Thu 11/67:10 pmKIX - SEA
1 stop16h 16mAir Canada
Deal found 6/11$669
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/317:40 pmPDX - KIX
1 stop28h 45mAir Canada
Sat 9/136:05 pmKIX - PDX
2 stops36h 37mAir Canada
Deal found 6/12$683
This FlightHub deal was found by Cheapflights users on 6/10. 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.
Mon 9/15:30 amSEA - ITM
2 stops21h 25mAir Canada
Wed 9/101:00 pmITM - SEA
2 stops16h 06mAir Canada
Deal found 6/10$688
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Tue 8/2610:05 amPDX - ITM
2 stops18h 10mAir Canada
Thu 9/111:00 pmITM - PDX
2 stops17h 46mAir Canada
Deal found 6/11$703
This Cheapflightsfares deal was found by Cheapflights users on 6/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/235:30 amPDX - KIX
1 stop17h 20mANA
Tue 9/306:45 amKIX - PDX
2 stops23h 57mANA
Deal found 6/12$704
This Trip.com deal was found by Cheapflights users on 6/11. 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.
Mon 9/1512:50 pmSEA - UKB
1 stop29h 10mKorean Air
Mon 10/276:30 pmUKB - SEA
1 stop31h 30mKorean Air
Deal found 6/11$705
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Tue 9/95:30 amPDX - ITM
2 stops19h 35mANA
Tue 9/162:05 pmITM - PDX
2 stops16h 37mANA
Deal found 6/11$705
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/267:45 amPDX - KIX
1 stop15h 05mUnited Airlines
Wed 9/104:50 pmKIX - PDX
1 stop19h 47mUnited Airlines
Deal found 6/10$707
This Trip.com deal was found by Cheapflights users on 6/11. 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.
Wed 11/1211:00 amSEA - KIX
1 stop17h 00mKorean Air
Wed 11/199:15 amKIX - SEA
1 stop16h 45mKorean Air
Deal found 6/11$707
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/267:45 amPDX - KIX
1 stop15h 05mMultiple Airlines
Wed 9/108:25 amKIX - PDX
2 stops22h 17mMultiple Airlines
Deal found 6/10$709
This Gurufare deal was found by Cheapflights users on 6/11. 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.
Wed 8/274:55 pmPDX - UKB
2 stops25h 05mKorean Air
Wed 9/1011:00 amUKB - PDX
2 stops25h 57mKorean Air
Deal found 6/11$718
This Gurufare deal was found by Cheapflights users on 6/11. 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.
Wed 8/2711:14 amPDX - KIX
2 stops17h 46mKorean Air
Thu 9/1112:35 pmKIX - PDX
2 stops16h 44mKorean Air
Deal found 6/11$720

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 June 12, 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

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 9/1

10:00 am-4:25 pm

1 stop14h 25m

Osaka Kansai Intl

Tue 9/16

6:05 pm-2:16 pm

1 stop12h 11m

$669

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Sun 8/31

7:40 pm-4:25 pm

1 stop28h 45m

Osaka Kansai Intl

Sat 9/13

6:05 pm-2:42 pm

2 stops36h 37m

$683

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Mon 9/1

5:30 am-6:55 pm

2 stops21h 25m

Osaka Itami

Wed 9/10

1:00 pm-1:06 pm

2 stops16h 06m

$688

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 7/29

10:00 am-7:30 pm

2 stops17h 30m

Osaka Kansai Intl

Thu 9/11

6:05 pm-6:36 pm

1 stop16h 31m

$698

PortlandOsaka

PDX - ITM

PDXITM

Portland

Tue 8/26

10:05 am-8:15 pm

2 stops18h 10m

Osaka Itami

Thu 9/11

1:00 pm-2:46 pm

2 stops17h 46m

$703

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Wed 9/3

7:45 am-2:50 pm

1 stop15h 05m

Osaka Kansai Intl

Tue 9/16

6:45 am-2:42 pm

2 stops23h 57m

$704

PortlandOsaka

PDX - ITM

PDXITM

Portland

Tue 9/9

5:30 am-5:05 pm

2 stops19h 35m

Osaka Itami

Tue 9/16

2:05 pm-2:42 pm

2 stops16h 37m

$705

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Tue 8/26

7:45 am-2:50 pm

1 stop15h 05m

Osaka Kansai Intl

Wed 9/10

4:50 pm-8:37 pm

1 stop19h 47m

$707

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Tue 8/26

7:45 am-2:50 pm

1 stop15h 05m

Osaka Kansai Intl

Wed 9/10

8:25 am-2:42 pm

2 stops22h 17m

$709

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Sun 9/7

7:00 am-5:30 pm

2 stops42h 30m

Kobe

Wed 9/17

11:00 am-8:37 pm

2 stops25h 37m

$710

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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 $888). Flying from State of Washington to Osaka in June is currently the most expensive (average of $1,324). 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 June 12, 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 June 12, 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
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
177 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,202 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,088 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very good
1,489 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
738 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Boarding

9.0

Comfort

9.0

Overall

9.1

Entertainment

8.9

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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?

    $383 is the cheapest one-way deal found within the past few days, from Korean Air. You may also be able to find cheap deals on Air Canada and ANA, with prices starting from $386 and $388, 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 $888). Flying from State of Washington to Osaka in June is currently the most expensive (average of $1,324). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$672Average$1,163FlexibilityNo cancel feeOn-time80%
Asiana AirlinesCheapest$688Average$905FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$716Average$1,133FlexibilityNo cancel feeOn-time81%
China EasternCheapest$719Average$756FlexibilityNo cancel feeOn-time62%
Air CanadaCheapest$749Average$1,066FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$794Average$1,029FlexibilityNo cancel feeOn-time69%
Japan AirlinesCheapest$850Average$1,128FlexibilityNo cancel feeOn-time79%
STARLUX AirlinesCheapest$918Average$1,105FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$963Average$1,159FlexibilityNo cancel feeOn-time74%
Hawaiian AirlinesCheapest$997Average$1,479FlexibilityNo cancel feeOn-time85%

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