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$372+ Cheap flights from Ontario (ONT) 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OSA
Jan 27 — Feb 31
Mon 1/27
Mon 2/3
1 adult, Economy
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Cheap flight deals from Ontario to Osaka

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Osaka (OSA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$766
(United Airlines)

One-way from

$372
(Japan Airlines)

Popular in

September

Cheapest in

February

Average price

$1,360
Provider with most accurate pricing for Ontario-Osaka (OSA) flight deals.
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Provider most trusted by Cheapflights users for Ontario-Osaka (OSA) flights.
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From Ontario to Osaka (OSA)
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One-way flight from Ontario to Osaka (OSA)
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Highest demand for flights based on searches. 7% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Ontario to Osaka

Cheapest flights from Ontario to Osaka
Explore the most affordable flight options available from Ontario to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 22, 2025.

This United Airlines deal was found by Cheapflights users on 1/21. 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.
Thu 2/206:00 amONT - KIX
1 stop17h 35mUnited Airlines
Wed 3/56:30 pmKIX - ONT
1 stop12h 59mUnited Airlines
Deal found 1/21$766
This American Airlines deal was found by Cheapflights users on 1/22. 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.
Sat 11/111:59 pmONT - KIX
2 stops26h 51mAmerican Airlines
Sun 11/95:50 pmKIX - ONT
2 stops22h 55mAmerican Airlines
Deal found 1/22$781
This United deal was found by Cheapflights users on 1/20. 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.
Wed 4/237:05 amONT - KIX
2 stops22h 50mMultiple Airlines
Wed 5/78:25 amKIX - ONT
2 stops46h 00mMultiple Airlines
Deal found 1/20$824
This United Airlines deal was found by Cheapflights users on 1/21. 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 9/36:00 amONT - ITM
2 stops19h 05mUnited Airlines
Wed 9/1712:00 pmITM - ONT
2 stops19h 46mUnited Airlines
Deal found 1/21$831
This United deal was found by Cheapflights users on 1/20. 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.
Mon 10/66:00 amONT - ITM
2 stops20h 55mMultiple Airlines
Tue 10/2112:00 pmITM - ONT
2 stops22h 00mMultiple Airlines
Deal found 1/20$832
This KAYAK deal was found by Cheapflights users on 1/21. 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.
Sun 2/96:00 amONT - KIX
2 stops22h 00mKorean Air
Mon 2/176:10 pmKIX - ONT
2 stops45h 22mKorean Air
Deal found 1/21$889
This Delta deal was found by Cheapflights users on 1/22. 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.
Mon 3/105:40 amONT - KIX
2 stops39h 10mDelta
Mon 3/249:15 amKIX - ONT
2 stops29h 07mDelta
Deal found 1/22$937
This oojo deal was found by Cheapflights users on 1/21. 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 2/1710:45 pmONT - KIX
1 stop21h 35mChina Airlines
Wed 2/2612:45 pmKIX - ONT
1 stop21h 05mChina Airlines
Deal found 1/21$981
This Hawaiian Airlines deal was found by Cheapflights users on 1/21. 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.
Mon 1/279:35 amONT - KIX
1 stop40h 10mHawaiian Airlines
Wed 2/128:45 pmKIX - ONT
1 stop18h 05mHawaiian Airlines
Deal found 1/21$1,050
This Ovago deal was found by Cheapflights users on 1/21. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:00 amONT - ITM
2 stops22h 30mJapan Airlines
Sun 8/179:30 amITM - ONT
2 stops21h 42mJapan Airlines
Deal found 1/21$1,672
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2311:59 pmONT - ITM
2 stops26h 41mAmerican Airlines
Tue 4/17:25 amITM - ONT
2 stops22h 35mAmerican Airlines
Deal found 1/20$1,880
This oojo deal was found by Cheapflights users on 1/20. 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.
Mon 2/2410:45 pmONT - ITM
2 stops28h 15mChina Airlines
Mon 3/37:35 pmITM - ONT
2 stops38h 15mChina Airlines
Deal found 1/20$5,483

Find flights from Ontario to Osaka within your budget

Customize your flight search to find flights from Ontario 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 January 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Thu 2/20

6:00 am-4:35 pm

1 stop17h 35m

Osaka Kansai Intl

Tue 3/4

6:30 pm-6:31 pm

1 stop17h 01m

$766

OntarioOsaka

ONT - ITM

ONTITM

Ontario

Tue 4/22

7:05 am-5:05 pm

2 stops18h 00m

Osaka Itami

Thu 5/8

12:00 pm-2:25 pm

2 stops18h 25m

$831

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Tue 2/4

6:00 am-10:20 pm

2 stops23h 20m

Osaka Kansai Intl

Thu 2/13

5:50 pm-6:26 pm

2 stops17h 36m

$837

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sun 2/9

6:00 am-9:00 pm

2 stops22h 00m

Osaka Kansai Intl

Mon 2/17

6:10 pm-10:32 pm

2 stops45h 22m

$884

OntarioOsaka

ONT - ITM

ONTITM

Ontario

Sat 1/25

6:15 am-6:55 pm

2 stops19h 40m

Osaka Itami

Sat 2/1

1:00 pm-6:19 pm

2 stops22h 19m

$892

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sat 3/8

6:00 am-9:00 pm

2 stops22h 00m

Osaka Kansai Intl

Sat 3/15

9:15 am-4:42 pm

2 stops23h 27m

$937

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Wed 2/26

10:45 pm-11:35 am

1 stop19h 50m

Osaka Kansai Intl

Thu 3/6

12:45 pm-4:50 pm

1 stop21h 05m

$981

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Fri 2/7

9:45 am-6:45 pm

1 stop40h 00m

Osaka Kansai Intl

Thu 2/13

8:45 pm-9:50 pm

1 stop18h 05m

$1,040

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Wed 4/23

6:00 am-4:25 pm

2 stops18h 25m

Osaka Kansai Intl

Mon 5/5

6:05 pm-8:34 pm

2 stops18h 29m

$1,204

OntarioOsaka

ONT - ITM

ONTITM

Ontario

Sun 3/23

11:59 pm-6:40 pm

2 stops26h 41m

Osaka Itami

Tue 4/1

7:25 am-2:00 pm

2 stops22h 35m

$1,880

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/22

Showing 1-10 of 25 results
1
2
3

Compare providers for flights from Ontario to Osaka

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Osaka in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
ScholarTripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ontario-Osaka flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Osaka flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Osaka flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Osaka flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Osaka flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Osaka

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

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

What is the cheapest month to book a flight from Ontario to Osaka?

Currently, November is the cheapest month in which you can book a flight from Ontario to Osaka (average of $950). Flying from Ontario 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 ONT to OSA?

Find hourly flight availability from Ontario 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 January 22, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Osaka in the morning. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight at noon.

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 January 22, 2025.
See what other customers who have flown with United Airlines, Korean Air and China Airlines from Ontario to Osaka have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Korean Air
8.5
Very good
1,039 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Japan Airlines
8.3
Very good
1,447 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

China Airlines
8.2
Very good
737 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Alaska Airlines
8.0
Very good
9,707 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Delta
8.0
Very good
8,514 reviews
Korean Air
8.5
Very good
1,039 reviews

Crew

8.7

Overall

8.5

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 10

Flight was short, so we did not get food, but that is expected. Only have entertainment a fair rating because no wifi is provided onboard. Good flight overall.

Related info for your journey

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

  • What airport do you fly from for flights from Ontario to Osaka?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to Osaka. On average, Ontario has 0 outbound flights to Osaka per day from 1 airline. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • What are the cheapest airlines flying from Ontario to Osaka round-trip?

    Our cheapest airline available from Ontario to Osaka is United Airlines. Our recent data shows that you can find tickets from as low as $766 on this airline. Additional options worth looking into are Korean Air and China Airlines, starting at $889 and $981 round-trip. United Airlines is currently priced 34% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Ontario to Osaka one-way?

    The cheapest airline one-way is Japan Airlines, with whom users have recently found tickets for as low as $372. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from Ontario to Osaka for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario 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 Ontario to Osaka?

    Currently, November is the cheapest month in which you can book a flight from Ontario to Osaka (average of $950). Flying from Ontario 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 Ontario?

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

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Top airline flying from Ontario to Osaka

Discover the top airline that operate flights from Ontario 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 January 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
China AirlinesCheapest$1,032Average$1,153FlexibilityNo cancel feeOn-time70%
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