HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$382+ Cheap flights from Osaka (OSA) to Ontario (ONT)

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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — ONT
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Osaka to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Osaka to Ontario

Cheapest flights from Osaka to Ontario
Explore the most affordable flight options available from Osaka to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This FlightHub deal was found by Cheapflights users on 12/15. 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 12/2212:45 pmKIX - ONT
1 stop21h 05mChina Airlines
Tue 12/3010:50 pmONT - KIX
1 stop26h 00mChina Airlines
Deal found 12/15$827
This STARLUX Airlines deal was found by Cheapflights users on 12/16. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2012:20 pmKIX - ONT
1 stop20h 30mSTARLUX Airlines
Sat 5/911:10 pmONT - KIX
1 stop22h 50mSTARLUX Airlines
Deal found 12/16$830
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/186:35 pmKIX - ONT
1 stop21h 06mUnited Airlines
Mon 1/56:00 amONT - KIX
1 stop17h 40mUnited Airlines
Deal found 12/15$832
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Fri 12/266:35 pmKIX - ONT
2 stops19h 32mUnited Airlines
Fri 1/26:39 pmONT - KIX
1 stop29h 01mUnited Airlines
Deal found 12/16$844
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/186:35 pmKIX - ONT
1 stop16h 08mUnited Airlines
Mon 12/2910:42 amONT - KIX
1 stop36h 58mUnited Airlines
Deal found 12/15$845
This United Airlines deal was found by Cheapflights users on 12/15. 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 12/166:35 pmKIX - ONT
2 stops19h 07mUnited Airlines
Tue 12/236:04 amONT - KIX
2 stops41h 36mUnited Airlines
Deal found 12/15$857
This United Airlines deal was found by Cheapflights users on 12/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:35 pmKIX - ONT
1 stop16h 08mUnited Airlines
Wed 12/316:00 amONT - KIX
1 stop17h 40mUnited Airlines
Deal found 12/18$860
This Kiwi.com deal was found by Cheapflights users on 12/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/222:30 pmKIX - ONT
1 stop19h 20mChina Airlines
Sun 12/2810:50 pmONT - KIX
1 stop19h 45mChina Airlines
Deal found 12/15$861
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Mon 12/226:35 pmKIX - ONT
1 stop16h 08mUnited Airlines
Tue 12/306:00 amONT - KIX
1 stop17h 40mUnited Airlines
Deal found 12/17$863
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/216:35 pmKIX - ONT
1 stop16h 08mUnited Airlines
Mon 12/296:39 pmONT - KIX
1 stop29h 01mUnited Airlines
Deal found 12/16$865
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Sat 12/206:35 pmKIX - ONT
1 stop21h 06mUnited Airlines
Sat 1/101:24 pmONT - KIX
2 stops34h 16mUnited Airlines
Deal found 12/16$866
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Fri 12/196:35 pmKIX - ONT
1 stop16h 08mUnited Airlines
Sat 1/36:00 amONT - KIX
1 stop17h 40mUnited Airlines
Deal found 12/17$867

Find flight deals from Osaka to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Osaka (OSA) to Ontario (ONT). 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$761
(Kissandfly.com)

One-way from

$382
(Delta)

Popular in

September

Cheapest in

October

Average price

$1,067
Provider with most accurate pricing for Osaka (OSA)-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Osaka (OSA)-Ontario flights.
Search Deals
From Osaka (OSA) to Ontario
Search Deals
One-way flight from Osaka (OSA) to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Osaka to Ontario 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 December 18, 2025.
Use the filters below to find and compare flights from Osaka to Ontario that are best for you.

Fly from

Osaka

Fly to

Ontario

Route

Depart

Return

Price

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Thu 2/5

9:00 am-1:56 pm

2 stops21h 56m

Ontario

Wed 2/18

3:30 pm-8:45 pm

2 stops36h 15m

$761

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Mon 4/20

1:25 pm-5:05 pm

1 stop19h 40m

Ontario

Mon 4/27

11:10 pm-12:15 pm

1 stop21h 05m

$775

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Fri 2/13

6:35 pm-12:43 pm

2 stops35h 08m

Ontario

Wed 2/18

1:50 pm-4:40 pm

1 stop33h 50m

$791

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Fri 2/13

6:35 pm-12:43 pm

2 stops35h 08m

Ontario

Fri 2/20

1:45 pm-4:40 pm

2 stops57h 55m

$791

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 1/28

6:35 pm-12:47 pm

2 stops35h 12m

Ontario

Sun 2/1

6:00 am-4:40 pm

1 stop17h 40m

$791

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 3/4

2:00 pm-3:50 pm

1 stop18h 50m

Ontario

Wed 3/11

10:45 pm-11:10 am

1 stop20h 25m

$798

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 3/11

2:00 pm-4:50 pm

1 stop18h 50m

Ontario

Wed 3/11

10:45 pm-12:50 pm

1 stop22h 05m

$798

OsakaOntario

ITM - ONT

ITMONT

Osaka Itami

Sun 2/1

2:40 pm-3:08 pm

2 stops17h 28m

Ontario

Thu 2/5

6:00 am-7:55 pm

2 stops20h 55m

$1,042

OsakaOntario

ITM - ONT

ITMONT

Osaka Itami

Sat 2/7

1:00 pm-12:17 pm

2 stops16h 17m

Ontario

Tue 2/17

6:10 am-6:10 pm

2 stops19h 00m

$1,722

OsakaOntario

ITM - ONT

ITMONT

Osaka Itami

Sat 4/25

2:35 pm-6:19 pm

2 stops19h 44m

Ontario

Sat 5/9

6:55 pm-7:50 pm

2 stops32h 55m

$1,830

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 36 results
1
2
3
4

Compare providers for flights from Osaka to Ontario

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 Osaka to Ontario in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Osaka-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Osaka-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Osaka-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Osaka-Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Osaka-Ontario 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 Osaka to Ontario

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

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

Currently, November is the cheapest month in which you can book a flight from Osaka to Ontario (average of $373). Flying from Osaka to Ontario in January is currently the most expensive (average of $1,042). 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.

Related info for your journey

Find useful and relevant information for your journey from Osaka to Ontario. 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 into for flights to Ontario from Osaka?

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

  • How long is the flight from Osaka to Ontario?

    For as low as $775, Korean Air can have you in Ontario from Osaka in 19h 40m. The distance between Osaka and Ontario is about 5759 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Osaka to Ontario (average of $373). Flying from Osaka to Ontario in January is currently the most expensive (average of $1,042). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.