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Osaka

$430+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — OSA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$880
(Alaska Airlines)

One-way from

$430
(FlightHub)

Popular in

June

Cheapest in

February

Average price

$1,169
From Ontario to Osaka (OSA)
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One-way flight from Ontario to Osaka (OSA)
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Highest demand for flights based on searches. 11% potential increase in price ($118 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Alaska Airlines deal was found by Cheapflights users on 6/9. 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.
Tue 9/3010:09 amONT - KIX
1 stop16h 36mAlaska Airlines
Thu 10/168:45 pmKIX - ONT
1 stop15h 52mAlaska Airlines
Deal found 6/9$880
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:47 amONT - KIX
2 stops19h 58mAmerican Airlines
Sat 10/255:55 pmKIX - ONT
2 stops19h 45mAmerican Airlines
Deal found 6/12$889
This oojo deal was found by Cheapflights users on 6/11. 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 11/129:45 pmONT - KIX
1 stop22h 05mSTARLUX Airlines
Wed 11/262:00 pmKIX - ONT
1 stop18h 50mSTARLUX Airlines
Deal found 6/11$932
This United Airlines deal was found by Cheapflights users on 6/10. 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 11/56:00 amONT - KIX
1 stop17h 35mUnited Airlines
Thu 11/206:30 pmKIX - ONT
1 stop16h 04mUnited Airlines
Deal found 6/10$935
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2511:59 pmONT - ITM
2 stops27h 26mAmerican Airlines
Thu 12/41:30 pmITM - ONT
2 stops21h 17mAmerican Airlines
Deal found 6/10$936
This oojo deal was found by Cheapflights users on 6/12. 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.
Sun 9/712:45 amONT - KIX
1 stop25h 20mChina Airlines
Mon 9/151:10 pmKIX - ONT
1 stop21h 30mChina Airlines
Deal found 6/12$937
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Mon 11/241:40 pmONT - ITM
2 stops35h 30mUnited Airlines
Sat 12/61:00 pmITM - ONT
2 stops22h 00mUnited Airlines
Deal found 6/10$941
This Delta deal was found by Cheapflights users on 6/10. 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.
Mon 11/36:45 amONT - KIX
2 stops21h 15mDelta
Wed 11/192:00 pmKIX - ONT
2 stops20h 17mDelta
Deal found 6/10$974
This Korean Air deal was found by Cheapflights users on 6/9. 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.
Mon 9/296:45 amONT - KIX
2 stops22h 15mKorean Air
Wed 10/1512:35 pmKIX - ONT
2 stops20h 42mKorean Air
Deal found 6/9$979
This Jetabroad deal was found by Cheapflights users on 6/12. 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 Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:10 amONT - KIX
2 stops19h 35mHawaiian Airlines
Thu 10/238:45 pmKIX - ONT
1 stop15h 52mHawaiian Airlines
Deal found 6/12$996
This Expedia deal was found by Cheapflights users on 6/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:45 amONT - KIX
2 stops21h 15mMultiple Airlines
Mon 11/102:30 pmKIX - ONT
1 stop19h 20mMultiple Airlines
Deal found 6/12$1,098
This Expedia deal was found by Cheapflights users on 6/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/1312:00 pmONT - ITM
2 stops29h 05mMultiple Airlines
Wed 7/236:00 pmITM - ONT
2 stops22h 13mMultiple Airlines
Deal found 6/10$1,118

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 June 12, 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

Tue 9/30

10:09 am-6:45 pm

1 stop16h 36m

Osaka Kansai Intl

Thu 10/16

8:45 pm-8:37 pm

1 stop15h 52m

$880

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Wed 10/15

6:47 am-6:45 pm

2 stops19h 58m

Osaka Kansai Intl

Sat 10/25

5:55 pm-9:40 pm

2 stops19h 45m

$889

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Wed 11/12

9:45 pm-12:50 pm

1 stop22h 05m

Osaka Kansai Intl

Wed 11/26

2:00 pm-3:50 pm

1 stop18h 50m

$932

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Wed 11/5

6:00 am-4:35 pm

1 stop17h 35m

Osaka Kansai Intl

Thu 11/20

6:30 pm-5:34 pm

1 stop16h 04m

$935

OntarioOsaka

ONT - ITM

ONTITM

Ontario

Tue 11/25

11:59 pm-8:25 pm

2 stops27h 26m

Osaka Itami

Thu 12/4

1:30 pm-5:47 pm

2 stops21h 17m

$936

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Sun 9/7

12:45 am-6:05 pm

1 stop25h 20m

Osaka Kansai Intl

Mon 9/15

1:10 pm-6:40 pm

1 stop21h 30m

$937

OntarioOsaka

ONT - ITM

ONTITM

Ontario

Mon 11/24

1:40 pm-6:10 pm

2 stops35h 30m

Osaka Itami

Sat 12/6

1:00 pm-6:00 pm

2 stops22h 00m

$941

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Mon 11/3

6:45 am-9:00 pm

2 stops21h 15m

Osaka Kansai Intl

Wed 11/19

2:00 pm-5:17 pm

2 stops20h 17m

$974

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Mon 9/29

6:45 am-11:20 am

2 stops36h 35m

Osaka Kansai Intl

Fri 10/17

12:35 pm-5:17 pm

2 stops20h 42m

$979

OntarioOsaka

ONT - KIX

ONTKIX

Ontario

Thu 10/9

7:10 am-6:45 pm

2 stops19h 35m

Osaka Kansai Intl

Thu 10/23

8:45 pm-8:37 pm

1 stop15h 52m

$996

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 28 results
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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 $888). Flying from Ontario to Osaka in June is currently the most expensive (average of $1,324). 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 June 12, 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 June 12, 2025.
See what other customers who have flown with STARLUX Airlines, EVA Air and Korean Air 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
178 reviews

Overall

9.1

Entertainment

8.9

Comfort

9.0

Food

8.8

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
178 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Overall

9.1

Entertainment

8.9

Comfort

9.0

Food

8.8

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,202 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Overall

9.1

Entertainment

8.9

Comfort

9.0

Food

8.8

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,088 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Overall

9.1

Entertainment

8.9

Comfort

9.0

Food

8.8

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Japan Airlines
8.3
Very good
1,490 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Overall

9.1

Entertainment

8.9

Comfort

9.0

Food

8.8

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
738 reviews
STARLUX Airlines
9.1
Wonderful
178 reviews

Overall

9.1

Entertainment

8.9

Comfort

9.0

Food

8.8

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 Alaska Airlines. Our recent data shows that you can find tickets from as low as $880 on this airline. Additional options worth looking into are American Airlines and STARLUX Airlines, starting at $889 and $932 round-trip.

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

    The cheapest airline one-way is Korean Air, with whom users have recently found tickets for as low as $430. However, be on the lookout for offers from Japan Airlines and Delta, 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 $888). Flying from Ontario to Osaka in June is currently the most expensive (average of $1,324). 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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$826Average$1,087FlexibilityNo cancel feeOn-time69%
China AirlinesCheapest$1,039Average$1,176FlexibilityNo cancel feeOn-time70%

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