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$559+ 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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — ONT
avr. 5 — avr. 121
sam. 4/5
sam. 4/12
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 mars 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$934
(China Airlines)

One-way from

$559
(China Airlines)

Popular in

July

Cheapest in

May

Average price

$1,159
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 ($204 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in March 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 mars 31, 2025.

This China Airlines deal was found by Cheapflights users on 3/31. 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 China Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 6/202:00 pmKIX - ONT
1 stop20h 00mChina Airlines
lun. 8/412:45 amONT - KIX
1 stop19h 15mChina Airlines
Deal found 3/31$934
This Trip.com deal was found by Cheapflights users on 3/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 7/301:25 pmKIX - ONT
1 stop20h 15mSTARLUX Airlines
ven. 8/2211:45 pmONT - KIX
1 stop20h 30mSTARLUX Airlines
Deal found 3/31$1,046
This United Airlines deal was found by Cheapflights users on 3/30. 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.
mer. 5/284:55 pmKIX - ONT
2 stops20h 09mUnited Airlines
mer. 9/246:38 pmONT - KIX
2 stops28h 12mUnited Airlines
Deal found 3/30$1,139
This Trip.com deal was found by Cheapflights users on 3/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 6/257:35 amKIX - ONT
2 stops26h 25mMultiple Airlines
lun. 7/712:45 amONT - KIX
2 stops29h 05mMultiple Airlines
Deal found 3/29$1,183
This Korean Air deal was found by Cheapflights users on 3/31. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 6/1912:35 pmKIX - ONT
2 stops20h 30mKorean Air
mar. 8/57:00 amONT - KIX
2 stops22h 00mKorean Air
Deal found 3/31$1,188
This Hawaiian Airlines deal was found by Cheapflights users on 3/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/298:45 pmKIX - ONT
1 stop17h 05mHawaiian Airlines
mar. 5/69:45 amONT - KIX
1 stop37h 55mHawaiian Airlines
Deal found 3/30$1,460
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 8/319:05 amKIX - ONT
2 stops29h 36mDelta
mar. 10/75:05 pmONT - KIX
2 stops56h 00mDelta
Deal found 3/31$1,587
This Alaska Airlines deal was found by Cheapflights users on 3/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/278:45 pmKIX - ONT
1 stop17h 10mAlaska Airlines
mar. 9/238:35 amONT - KIX
1 stop18h 10mAlaska Airlines
Deal found 3/30$1,602
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 9/712:00 pmITM - ONT
2 stops26h 53mMultiple Airlines
mer. 10/86:00 amONT - ITM
2 stops19h 05mMultiple Airlines
Deal found 3/31$1,691
This United Airlines deal was found by Cheapflights users on 3/30. 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.
jeu. 5/1512:00 pmITM - ONT
2 stops16h 24mUnited Airlines
jeu. 5/226:00 amONT - ITM
2 stops19h 05mUnited Airlines
Deal found 3/30$1,926

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 mars 31, 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

ven. 6/20

2:00 pm-6:00 pm

1 stop20h 00m

Ontario

lun. 8/4

12:45 am-12:00 pm

1 stop19h 15m

$934

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

mer. 7/30

1:25 pm-5:40 pm

1 stop20h 15m

Ontario

ven. 8/22

11:45 pm-12:15 pm

1 stop20h 30m

$1,046

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

mer. 5/28

4:55 pm-9:04 pm

2 stops20h 09m

Ontario

mer. 9/24

6:38 pm-2:50 pm

2 stops28h 12m

$1,139

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

mer. 6/25

7:35 am-6:00 pm

2 stops26h 25m

Ontario

lun. 7/7

12:45 am-9:50 pm

2 stops29h 05m

$1,183

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

jeu. 6/19

12:35 pm-5:05 pm

2 stops20h 30m

Ontario

mar. 8/5

7:00 am-9:00 pm

2 stops22h 00m

$1,188

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

mar. 4/29

8:45 pm-9:50 pm

1 stop17h 05m

Ontario

mar. 5/6

9:45 am-3:40 pm

1 stop37h 55m

$1,460

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

dim. 8/31

6:20 pm-8:58 am

2 stops54h 38m

Ontario

mer. 10/8

6:00 am-5:05 pm

2 stops43h 05m

$1,587

OsakaOntario

KIX - ONT

KIXONT

Osaka Kansai Intl

mar. 5/27

8:45 pm-9:55 pm

1 stop17h 10m

Ontario

mer. 9/24

8:35 am-6:45 pm

1 stop18h 10m

$1,602

OsakaOntario

ITM - ONT

ITMONT

Osaka Itami

dim. 9/7

12:00 pm-10:53 pm

2 stops26h 53m

Ontario

mer. 10/8

6:00 am-5:05 pm

2 stops19h 05m

$1,691

OsakaOntario

ITM - ONT

ITMONT

Osaka Itami

jeu. 5/15

12:00 pm-12:24 pm

2 stops16h 24m

Ontario

jeu. 5/22

6:00 am-5:05 pm

2 stops19h 05m

$1,926

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/29

Showing 1-10 of 23 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 $326). 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 mars 31, 2025.
Peruse reviews from past customers who have flown with STARLUX Airlines, Korean Air and Japan Airlines from Osaka to Ontario to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
146 reviews

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
STARLUX Airlines
9.1
Wonderful
146 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Korean Air
8.4
Very good
1,051 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
China Airlines
8.2
Very good
723 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.
Alaska Airlines
8.0
Very good
9,818 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Entertainment

9.0

Boarding

9.0

Reviews

1 / 5
10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

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 $559. Delta flights start at $578 while deals on Korean Air start at $664 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 $326). 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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