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Ontario

$439+ 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 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — ONT
Mar 4 — Mar 111
Wed 3/4
Wed 3/11
1 adult, Economy
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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 February 2, 2026.

This Gotogate deal was found by Cheapflights users on 1/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:05 pm
KIX
-
ONT
1 stop38h 55m
China Airlines
Thu 9/2412:10 am
ONT
-
KIX
1 stop20h 40m
China Airlines
Deal found 1/31$786
This Gotogate deal was found by Cheapflights users on 2/1. 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.
Fri 9/187:05 pm
KIX
-
ONT
1 stop38h 55m
China Airlines
Wed 9/2312:10 am
ONT
-
KIX
1 stop25h 55m
China Airlines
Deal found 2/1$794
This Gotogate deal was found by Cheapflights users on 1/30. 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 4/281:10 pm
KIX
-
ONT
1 stop20h 50m
China Airlines
Mon 5/412:10 am
ONT
-
KIX
1 stop19h 50m
China Airlines
Deal found 1/30$809
This Gotogate deal was found by Cheapflights users on 1/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:25 pm
KIX
-
ONT
1 stop19h 40m
STARLUX Airlines
Sat 9/1911:10 pm
ONT
-
KIX
1 stop21h 05m
STARLUX Airlines
Deal found 1/31$816
This oojo deal was found by Cheapflights users on 1/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2612:45 pm
KIX
-
ONT
1 stop21h 05m
China Airlines
Wed 4/812:10 am
ONT
-
KIX
1 stop25h 55m
China Airlines
Deal found 1/31$826
This Gotogate deal was found by Cheapflights users on 1/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/12:00 pm
KIX
-
ONT
1 stop20h 40m
China Airlines
Thu 7/912:45 am
ONT
-
KIX
1 stop25h 20m
China Airlines
Deal found 1/31$841
This Gotogate deal was found by Cheapflights users on 1/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/11:25 pm
KIX
-
ONT
1 stop20h 15m
STARLUX Airlines
Fri 7/1011:45 pm
ONT
-
KIX
1 stop22h 15m
STARLUX Airlines
Deal found 1/31$857
This oojo deal was found by Cheapflights users on 1/31. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/182:00 pm
KIX
-
ONT
1 stop18h 50m
STARLUX Airlines
Sat 3/2110:45 pm
ONT
-
KIX
1 stop20h 25m
STARLUX Airlines
Deal found 1/31$988
This oojo deal was found by Cheapflights users on 2/1. 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.
Wed 3/182:30 pm
KIX
-
ONT
1 stop19h 20m
China Airlines
Wed 3/2511:50 pm
ONT
-
KIX
1 stop26h 00m
China Airlines
Deal found 2/1$1,005
This FlightHub deal was found by Cheapflights users on 1/31. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1912:45 pm
KIX
-
ONT
1 stop21h 05m
China Airlines
Sun 3/2211:50 pm
ONT
-
KIX
1 stop19h 45m
China Airlines
Deal found 1/31$1,011
This Alaska Airlines deal was found by Cheapflights users on 2/1. 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.
Sat 9/192:35 pm
ITM
-
ONT
2 stops24h 04m
Multiple Airlines
Sun 9/276:58 pm
ONT
-
ITM
2 stops32h 52m
Multiple Airlines
Deal found 2/1$1,142
This United Airlines deal was found by Cheapflights users on 1/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1712:50 pm
ITM
-
ONT
2 stops20h 57m
United Airlines
Fri 9/256:00 am
ONT
-
ITM
2 stops19h 05m
United Airlines
Deal found 1/31$1,807

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 February 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$809
(Gotogate)

One-way from

$439
(Korean Air)

Popular in

August

Cheapest in

October

Average price

$935
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. 7% potential increase in price ($77 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 2, 2026.
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

Tue 4/28

1:10 pm-6:00 pm

1 stop20h 50m

Ontario

Mon 5/4

12:10 am-12:00 pm

1 stop19h 50m

$809

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 7/1

2:00 pm-6:40 pm

1 stop20h 40m

Ontario

Thu 7/9

12:45 am-6:05 pm

1 stop25h 20m

$841

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 7/1

1:25 pm-5:40 pm

1 stop20h 15m

Ontario

Fri 7/10

11:45 pm-2:00 pm

1 stop22h 15m

$857

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Thu 3/19

12:45 pm-5:50 pm

1 stop21h 05m

Ontario

Sun 3/22

11:50 pm-11:35 am

1 stop19h 45m

$1,011

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Tue 3/3

8:45 pm-10:15 pm

1 stop18h 30m

Ontario

Mon 3/30

12:10 am-12:50 pm

1 stop20h 40m

$1,079

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 3/18

12:45 pm-8:15 pm

2 stops23h 30m

Ontario

Wed 3/25

11:50 pm-5:50 pm

1 stop26h 00m

$1,211

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Fri 3/20

12:45 pm-5:50 pm

1 stop21h 05m

Ontario

Mon 3/23

11:50 pm-5:50 pm

1 stop26h 00m

$1,391

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Thu 3/19

6:35 pm-5:41 pm

1 stop15h 06m

Ontario

Sun 3/22

5:15 am-4:40 pm

2 stops43h 25m

$1,395

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 3/18

6:35 pm-10:57 pm

1 stop20h 22m

Ontario

Sat 3/21

1:50 pm-4:40 pm

2 stops34h 50m

$1,457

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Tue 4/28

4:55 pm-12:38 pm

2 stops35h 43m

Ontario

Tue 5/5

6:59 pm-2:50 pm

1 stop27h 51m

$1,532

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 33 results
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  • Most accurate provider: When it comes to deals on Osaka-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Osaka-Ontario flight deals on Cheapflights vs. FlightHub >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 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 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, January is the cheapest month in which you can book a flight from Osaka to Ontario (average of $345). Flying from Osaka to Ontario in July is currently the most expensive (average of $872). 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 $857, China Airlines can have you in Ontario from Osaka in 20h 15m. 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, January is the cheapest month in which you can book a flight from Osaka to Ontario (average of $345). Flying from Osaka to Ontario in July is currently the most expensive (average of $872). 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

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