HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Osaka

$440+ Cheap flights from Ontario (ONT) to Osaka (OSA)

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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OSA
abr. 2 — abr. 91
mié. 4/2
mié. 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Osaka 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 Ontario to Osaka

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Osaka (OSA). 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 marzo 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$874
(United Airlines)

One-way from

$486
(United Airlines)

Popular in

June

Cheapest in

May

Average price

$983
Provider with most accurate pricing for Ontario-Osaka (OSA) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Osaka (OSA) flights.
Search Deals
From Ontario to Osaka (OSA)
Search Deals
One-way flight from Ontario to Osaka (OSA)
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Ontario to Osaka

Cheapest flights from Ontario to Osaka
Explore the most affordable flight options available from Ontario to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 28, 2025.

This United Airlines deal was found by Cheapflights users on 3/27. 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.
jue. 8/286:00 amONT - KIX
1 stop16h 50mUnited Airlines
jue. 9/114:50 pmKIX - ONT
1 stop16h 52mUnited Airlines
Deal found 3/27$808
This United Airlines deal was found by Cheapflights users on 3/27. 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.
mié. 10/226:00 amONT - ITM
2 stops19h 05mUnited Airlines
jue. 10/301:00 pmITM - ONT
2 stops25h 35mUnited Airlines
Deal found 3/27$817
This United deal was found by Cheapflights users on 3/26. 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.
lun. 9/16:00 amONT - KIX
2 stops21h 30mMultiple Airlines
jue. 9/118:25 amKIX - ONT
2 stops30h 28mMultiple Airlines
Deal found 3/26$818
This StudentUniverse deal was found by Cheapflights users on 3/25. 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 StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/297:00 amONT - KIX
2 stops22h 00mKorean Air
mié. 11/511:55 amKIX - ONT
2 stops18h 28mKorean Air
Deal found 3/25$823
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
lun. 9/298:35 amONT - KIX
1 stop18h 10mAlaska Airlines
mar. 10/288:45 pmKIX - ONT
1 stop17h 10mAlaska Airlines
Deal found 3/27$849
This United deal was found by Cheapflights users on 3/26. 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.
mar. 9/96:00 amONT - ITM
2 stops19h 05mMultiple Airlines
mar. 9/1612:00 pmITM - ONT
2 stops21h 42mMultiple Airlines
Deal found 3/26$880
This Hawaiian Airlines deal was found by Cheapflights users on 3/26. 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. 9/238:35 amONT - KIX
1 stop18h 10mHawaiian Airlines
vie. 10/178:45 pmKIX - ONT
1 stop17h 10mHawaiian Airlines
Deal found 3/26$919
This Gotogate deal was found by Cheapflights users on 3/27. 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.
dom. 5/412:10 amONT - KIX
1 stop19h 50mChina Airlines
mié. 5/141:10 pmKIX - ONT
1 stop20h 50mChina Airlines
Deal found 3/27$973
This Gurufare deal was found by Cheapflights users on 3/27. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/811:10 pmONT - KIX
1 stop21h 05mSTARLUX Airlines
vie. 9/121:25 pmKIX - ONT
1 stop19h 40mSTARLUX Airlines
Deal found 3/27$1,075
This Delta deal was found by Cheapflights users on 3/27. 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.
mié. 9/246:00 amONT - KIX
2 stops23h 00mDelta
jue. 10/99:05 amKIX - ONT
2 stops24h 17mDelta
Deal found 3/27$1,227
This Ovago deal was found by Cheapflights users on 3/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/86:00 amONT - ITM
2 stops21h 50mJapan Airlines
sáb. 8/232:35 pmITM - ONT
2 stops19h 48mJapan Airlines
Deal found 3/27$1,909
This oojo deal was found by Cheapflights users on 3/27. 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.
sáb. 4/1912:10 amONT - ITM
2 stops51h 40mChina Airlines
jue. 5/2910:20 amITM - ONT
2 stops23h 40mChina Airlines
Deal found 3/27$5,484

Cheapflights Fare Finder

Customize your flight search to find flights from Ontario to Osaka 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 marzo 28, 2025.
Use the filters below to find and compare flights from Ontario to Osaka that are best for you.

Fly from

Ontario

Fly to

Osaka

Route

Depart

Return

Price

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

jue. 8/28

6:00 am-2:50 pm

1 stop16h 50m

Osaka Kansai Intl

mié. 9/10

4:50 pm-5:42 pm

1 stop16h 52m

$808

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

lun. 9/1

6:00 am-7:30 pm

2 stops21h 30m

Osaka Kansai Intl

jue. 9/11

8:25 am-10:53 pm

2 stops30h 28m

$818

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

dom. 9/21

7:00 am-9:00 pm

2 stops22h 00m

Osaka Kansai Intl

vie. 10/17

9:05 am-5:22 pm

2 stops24h 17m

$837

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

mar. 9/23

8:35 am-6:45 pm

1 stop18h 10m

Osaka Kansai Intl

vie. 10/17

8:45 pm-9:55 pm

1 stop17h 10m

$919

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

dom. 5/4

12:10 am-12:00 pm

1 stop19h 50m

Osaka Kansai Intl

mié. 5/14

1:10 pm-6:00 pm

1 stop20h 50m

$973

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

dom. 9/21

8:35 am-6:45 pm

1 stop18h 10m

Osaka Kansai Intl

sáb. 10/18

8:45 pm-9:55 pm

1 stop17h 10m

$974

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

lun. 9/8

11:10 pm-12:15 pm

1 stop21h 05m

Osaka Kansai Intl

vie. 9/12

1:25 pm-5:05 pm

1 stop19h 40m

$1,075

OntarioOsaka

ONT - ITM

ONTITM

Ontario

mar. 4/29

6:00 am-5:05 pm

2 stops19h 05m

Osaka Itami

jue. 5/8

12:00 pm-12:24 pm

2 stops16h 24m

$1,162

OntarioOsaka

ONT - ITM

ONTITM

Ontario

dom. 4/20

7:05 am-5:05 pm

2 stops42h 00m

Osaka Itami

lun. 4/28

12:00 pm-9:58 pm

2 stops49h 58m

$1,173

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

lun. 5/12

6:00 am-9:00 pm

2 stops23h 00m

Osaka Kansai Intl

jue. 5/29

12:35 pm-10:35 pm

2 stops26h 00m

$1,352

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 27 results
1
2
3

Compare providers for flights from Ontario to Osaka

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 Ontario to Osaka in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

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

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

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

Currently, February is the cheapest month in which you can book a flight from Ontario to Osaka (average of $898). Flying from Ontario to Osaka in December is currently the most expensive (average of $1,343). 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.

What is the cheapest time of day to fly from ONT to OSA?

Find hourly flight availability from Ontario to Osaka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated marzo 28, 2025.

A simple way to save on the total cost of your ticket is to fly from Ontario to Osaka in the morning. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight at noon.

Rainfall in Osaka by month

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

In terms of precipitation, rainfall in Osaka ranges from 1.6 - 7.9 inches per month. June is typically the wettest month, when rainfall can reach 7.9 in. January is typically the driest time to visit Osaka when rainfall is around 1.6 in.

Temperature in Osaka by month

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

If weather is an important factor for your trip to Osaka, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

Reviews of airlines servicing Osaka

Get insights into the airlines that provide service to Osaka. 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 Osaka. Reviews last updated marzo 28, 2025.
See what other customers who have flown with STARLUX Airlines, Korean Air and Japan Airlines from Ontario to Osaka have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Crew

9.3

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

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Crew

9.3

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
1,050 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Crew

9.3

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

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Crew

9.3

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
722 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Crew

9.3

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
9,798 reviews
STARLUX Airlines
9.1
Wonderful
146 reviews

Entertainment

9.0

Overall

9.1

Comfort

9.0

Food

8.9

Boarding

9.0

Crew

9.3

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 Ontario to Osaka. 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 from for flights from Ontario to Osaka?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to Osaka. On average, Ontario has 0 outbound flights to Osaka per day from 2 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • What are the cheapest airlines flying from Ontario to Osaka round-trip?

    Our cheapest airline available from Ontario to Osaka is United Airlines. Our recent data shows that you can find tickets from as low as $874 on this airline. Additional options worth looking into are China Airlines and Delta, starting at $973 and $1,352 round-trip. United Airlines is currently priced 24% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $486. However, be on the lookout for offers from Korean Air and China Airlines, as they are both options that can get you from Ontario to Osaka for a low price.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Ontario to Osaka (average of $898). Flying from Ontario to Osaka in December is currently the most expensive (average of $1,343). 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

Traveling to a place near Ontario?

Book flights to Ontario if you plan to visit one of these locations
Nara
Nishinomiya

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.

Top 2 airlines flying from Ontario to Osaka

Discover the top 2 airlines that operate flights from Ontario to Osaka. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated marzo 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$826Average$1,087FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$1,032Average$1,153FlexibilityNo cancel feeOn-time70%
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.