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$447+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — ONT
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$941
(oojo)

One-way from

$447
(Kiwi.com)

Popular in

July

Cheapest in

May

Average price

$836
Provider with most accurate pricing for Osaka (OSA)-Los Angeles flight deals.
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Provider most trusted by Cheapflights users for Osaka (OSA)-Los Angeles flights.
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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. 16% potential increase in price ($198 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This oojo deal was found by Cheapflights users on 5/1. 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 6/43:10 pmKIX - ONT
1 stop17h 55mSTARLUX Airlines
Wed 6/2511:10 pmONT - KIX
1 stop21h 05mSTARLUX Airlines
Deal found 5/1$941
This China Airlines deal was found by Cheapflights users on 4/29. 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.
Mon 10/131:10 pmKIX - ONT
1 stop20h 50mChina Airlines
Mon 11/1010:45 pmONT - KIX
1 stop19h 50mChina Airlines
Deal found 4/29$1,028
This United Airlines deal was found by Cheapflights users on 5/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/34:50 pmKIX - ONT
2 stops19h 43mUnited Airlines
Mon 10/276:00 amONT - KIX
1 stop18h 35mUnited Airlines
Deal found 5/1$1,110
This EVA Air deal was found by Cheapflights users on 5/1. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/231:10 pmKIX - ONT
2 stops27h 03mMultiple Airlines
Mon 7/76:58 pmONT - KIX
2 stops25h 12mMultiple Airlines
Deal found 5/1$1,239
This Hawaiian Airlines deal was found by Cheapflights users on 5/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/38:45 pmKIX - ONT
1 stop17h 05mHawaiian Airlines
Sat 5/109:45 amONT - KIX
1 stop17h 00mHawaiian Airlines
Deal found 5/1$1,545
This Korean Air deal was found by Cheapflights users on 5/1. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/512:35 pmKIX - ONT
2 stops21h 45mKorean Air
Tue 6/106:25 amONT - KIX
2 stops22h 35mKorean Air
Deal found 5/1$1,747
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1412:00 pmITM - ONT
2 stops16h 24mUnited Airlines
Wed 5/216:00 amONT - ITM
2 stops19h 05mUnited Airlines
Deal found 4/30$2,126
This Qatar Airways deal was found by Cheapflights users on 5/1. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/16:55 pmKIX - ONT
2 stops34h 46mQatar Airways
Tue 8/512:00 pmONT - KIX
2 stops37h 25mQatar Airways
Deal found 5/1$3,054
This oojo deal was found by Cheapflights users on 5/1. 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.
Sat 7/197:10 pmKIX - ONT
2 stops43h 20mEtihad Airways
Sat 8/211:45 pmONT - KIX
2 stops43h 55mEtihad Airways
Deal found 5/1$3,075

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 May 1, 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 6/4

3:10 pm-5:05 pm

1 stop17h 55m

Ontario

Wed 6/25

11:10 pm-12:15 pm

1 stop21h 05m

$941

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Mon 10/13

1:10 pm-6:00 pm

1 stop20h 50m

Ontario

Mon 11/10

10:45 pm-11:35 am

1 stop19h 50m

$1,028

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Wed 9/3

4:50 pm-8:33 pm

2 stops19h 43m

Ontario

Mon 10/27

6:00 am-4:35 pm

1 stop18h 35m

$1,110

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Mon 6/23

1:10 pm-12:13 am

2 stops27h 03m

Ontario

Mon 7/7

6:58 pm-12:10 pm

2 stops25h 12m

$1,239

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Thu 6/5

12:35 pm-6:20 pm

2 stops21h 45m

Ontario

Tue 6/10

6:25 am-9:00 pm

2 stops22h 35m

$1,747

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Thu 6/5

8:45 pm-9:55 pm

1 stop17h 10m

Ontario

Tue 6/10

9:50 am-6:45 pm

1 stop16h 55m

$1,922

OsakaOntario

ITM - ONT

ITMONT

Osaka Itami

Wed 5/14

12:00 pm-12:24 pm

2 stops16h 24m

Ontario

Wed 5/21

6:00 am-5:05 pm

2 stops19h 05m

$2,126

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Fri 8/1

6:55 pm-1:41 pm

2 stops34h 46m

Ontario

Tue 8/5

12:00 pm-5:25 pm

2 stops37h 25m

$3,054

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Sat 7/19

7:10 pm-10:30 pm

2 stops43h 20m

Ontario

Sat 8/2

11:45 pm-11:40 am

2 stops43h 55m

$3,075

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

Tue 5/13

7:55 pm-10:02 am

2 stops54h 07m

$447

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 24 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 $328). 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.

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ontario, 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 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated May 1, 2025.
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
162 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,186 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,069 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Alaska Airlines
8.0
Very good
9,972 reviews
STARLUX Airlines
9.1
Wonderful
162 reviews

Boarding

9.0

Crew

9.3

Entertainment

9.0

Food

8.9

Comfort

9.0

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

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.

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

    To fly one-way, consider booking your trip with China Airlines, which is currently one of the cheapest options available, starting at $630. EVA Air flights start at $680 while deals on United Airlines start at $702 one-way.

  • 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 $328). 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.

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