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$462+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — ONT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$774
(Delta)

One-way from

$462
(SmartFares)

Popular in

December

Cheapest in

October

Average price

$1,046
From Osaka (OSA) to Ontario
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One-way flight from Osaka (OSA) to Ontario
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Highest demand for flights based on searches. 4% potential increase in price ($40 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 17, 2025.

This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/192:00 pmKIX - ONT
2 stops25h 55mDelta
Sun 11/234:49 pmONT - KIX
2 stops55h 11mDelta
Deal found 9/16$774
This HIS deal was found by Cheapflights users on 9/16. 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 HIS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:55 amKIX - ONT
2 stops22h 14mKorean Air
Mon 11/246:45 amONT - KIX
2 stops21h 00mKorean Air
Deal found 9/16$780
This Korean Air deal was found by Cheapflights users on 9/16. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2111:55 amKIX - ONT
2 stops22h 14mKorean Air
Tue 11/256:45 amONT - KIX
2 stops21h 00mKorean Air
Deal found 9/16$781
This Korean Air deal was found by Cheapflights users on 9/16. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1911:55 amKIX - ONT
2 stops22h 14mKorean Air
Mon 11/246:45 amONT - KIX
2 stops21h 00mKorean Air
Deal found 9/16$784
This oojo deal was found by Cheapflights users on 9/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:20 pmKIX - ONT
1 stop21h 10mSTARLUX Airlines
Wed 12/109:45 pmONT - KIX
1 stop20h 25mSTARLUX Airlines
Deal found 9/16$821
This oojo deal was found by Cheapflights users on 9/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/153:10 pmKIX - ONT
1 stop17h 55mSTARLUX Airlines
Wed 10/2211:10 pmONT - KIX
1 stop22h 50mSTARLUX Airlines
Deal found 9/17$827
This China Airlines deal was found by Cheapflights users on 9/16. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/22:30 pmKIX - ONT
1 stop19h 20mChina Airlines
Tue 12/910:50 pmONT - KIX
1 stop19h 45mChina Airlines
Deal found 9/16$844
This China Airlines deal was found by Cheapflights users on 9/16. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/202:30 pmKIX - ONT
1 stop19h 20mChina Airlines
Mon 11/2410:50 pmONT - KIX
1 stop21h 30mChina Airlines
Deal found 9/16$845
This China Airlines deal was found by Cheapflights users on 9/16. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/82:30 pmKIX - ONT
1 stop19h 20mChina Airlines
Tue 11/1110:50 pmONT - KIX
1 stop21h 30mChina Airlines
Deal found 9/16$848
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 9/242:35 pmITM - ONT
2 stops20h 12mAlaska Airlines
Sun 9/286:00 amONT - ITM
2 stops21h 45mAlaska Airlines
Deal found 9/14$1,177
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/202:40 pmITM - ONT
2 stops25h 52mAlaska Airlines
Tue 11/256:00 amONT - ITM
2 stops20h 50mAlaska Airlines
Deal found 9/16$1,186
This Alaska Airlines deal was found by Cheapflights users on 9/16. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/202:40 pmITM - ONT
2 stops25h 52mAlaska Airlines
Mon 11/2410:49 amONT - ITM
2 stops40h 01mAlaska Airlines
Deal found 9/16$1,205

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 September 17, 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

Wed 11/19

11:55 am-11:06 am

2 stops40h 11m

Ontario

Tue 11/25

6:45 am-10:45 am

2 stops35h 00m

$774

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Fri 11/21

11:55 am-11:52 pm

2 stops28h 57m

Ontario

Sun 11/23

6:45 am-12:50 pm

2 stops37h 05m

$774

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 11/19

11:55 am-11:06 am

2 stops40h 11m

Ontario

Sun 11/23

6:45 am-12:50 pm

2 stops37h 05m

$777

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Thu 11/20

11:55 am-5:09 pm

2 stops22h 14m

Ontario

Tue 11/25

6:45 am-8:45 pm

2 stops21h 00m

$781

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Thu 12/4

11:55 am-5:08 pm

2 stops22h 13m

Ontario

Tue 12/9

6:40 am-8:45 pm

2 stops21h 05m

$781

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Fri 11/21

11:55 am-5:09 pm

2 stops22h 14m

Ontario

Mon 11/24

6:45 am-8:45 pm

2 stops21h 00m

$781

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 11/19

11:55 am-5:09 pm

2 stops22h 14m

Ontario

Mon 11/24

6:45 am-8:45 pm

2 stops21h 00m

$784

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Fri 11/21

11:55 am-5:09 pm

2 stops22h 14m

Ontario

Tue 11/25

6:45 am-8:45 pm

2 stops21h 00m

$784

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 11/19

11:55 am-5:09 pm

2 stops22h 14m

Ontario

Tue 11/25

6:45 am-8:45 pm

2 stops21h 00m

$784

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Thu 11/20

11:55 am-5:09 pm

2 stops22h 14m

Ontario

Mon 11/24

6:45 am-8:45 pm

2 stops21h 00m

$784

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 40 results
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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, August is the cheapest month in which you can book a flight from Osaka to Ontario (average of $246). Flying from Osaka to Ontario in March is currently the most expensive (average of $327). 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 $1,184, Delta can have you in Ontario from Osaka in 17h 37m. The distance between Osaka and Ontario is about 5734 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, August is the cheapest month in which you can book a flight from Osaka to Ontario (average of $246). Flying from Osaka to Ontario in March is currently the most expensive (average of $327). 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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