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Ontario

$487+ Cheap flights from Australia 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 2/12. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
feb. 25 — mar. 41
mié. 2/25
mié. 3/4
1 adult, Economy
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Cheap flight deals from Australia to Ontario

Cheapest flights from Australia to Ontario
Explore the most affordable flight options available from Australia to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/24. 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.
vie. 1/3011:40 am
BNE
-
ONT
1 stop24h 03m
United Airlines
jue. 2/56:39 pm
ONT
-
BNE
1 stop18h 51m
United Airlines
Deal found 1/24$829
This United Airlines deal was found by Cheapflights users on 1/26. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/3011:40 am
BNE
-
ONT
1 stop17h 38m
United Airlines
vie. 2/136:37 pm
ONT
-
BNE
1 stop18h 53m
United Airlines
Deal found 1/26$832
This United Airlines deal was found by Cheapflights users on 1/26. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 1/2811:40 am
BNE
-
ONT
1 stop24h 03m
United Airlines
sáb. 2/76:32 pm
ONT
-
BNE
1 stop18h 58m
United Airlines
Deal found 1/26$833
This United Airlines deal was found by Cheapflights users on 1/26. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 1/3111:40 am
BNE
-
ONT
1 stop18h 37m
United Airlines
sáb. 2/71:24 pm
ONT
-
BNE
2 stops24h 06m
United Airlines
Deal found 1/26$834
This Kiwi.com deal was found by Cheapflights users on 1/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/59:40 pm
SYD
-
ONT
1 stop19h 48m
Hawaiian Airlines
mar. 2/108:13 am
ONT
-
SYD
1 stop40h 32m
Hawaiian Airlines
Deal found 1/25$986
This Flighttix deal was found by Cheapflights users on 1/25. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/51:05 pm
SYD
-
ONT
2 stops28h 23m
Multiple Airlines
mar. 2/108:13 am
ONT
-
SYD
1 stop40h 32m
Multiple Airlines
Deal found 1/25$1,049
This United Airlines deal was found by Cheapflights users on 1/24. 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. 2/267:05 am
BNE
-
ONT
2 stops28h 36m
United Airlines
lun. 3/21:45 pm
ONT
-
BNE
2 stops47h 45m
United Airlines
Deal found 1/24$1,057
This Alaska Airlines deal was found by Cheapflights users on 1/24. 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. 2/39:40 pm
SYD
-
ONT
1 stop19h 48m
Multiple Airlines
mié. 2/118:13 am
ONT
-
SYD
1 stop40h 32m
Multiple Airlines
Deal found 1/24$1,059
This United Airlines deal was found by Cheapflights users on 1/24. 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.
vie. 3/2012:00 pm
MEL
-
ONT
1 stop18h 18m
United Airlines
sáb. 3/281:50 pm
ONT
-
MEL
2 stops25h 25m
United Airlines
Deal found 1/24$1,062
This United Airlines deal was found by Cheapflights users on 1/24. 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.
lun. 1/2612:10 pm
SYD
-
ONT
1 stop18h 08m
United Airlines
dom. 2/81:53 pm
ONT
-
SYD
1 stop21h 27m
United Airlines
Deal found 1/24$1,063
This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 1/3111:40 am
BNE
-
ONT
1 stop18h 37m
United Airlines
sáb. 3/286:37 pm
ONT
-
BNE
2 stops22h 53m
United Airlines
Deal found 1/25$1,063
This United Airlines deal was found by Cheapflights users on 1/26. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/301:00 pm
MEL
-
ONT
1 stop17h 18m
United Airlines
vie. 2/136:37 pm
ONT
-
MEL
1 stop20h 23m
United Airlines
Deal found 1/26$1,066

Find flight deals from Australia to Ontario

Keep the following information in mind while searching for Australia to Ontario flight deals. Data was last updated enero 26, 2026.

Most accurate provider

oojo
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$833
(United Airlines)

One-way from

$487
(United Airlines)

Popular in

December

Cheapest in

August

Average price

$859
Provider with most accurate pricing for Sydney Kingsford Smith-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Sydney Kingsford Smith-Los Angeles flights.
Search Deals
From Australia to Ontario
Search Deals
One-way flight from Australia to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($73 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Australia 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 enero 26, 2026.
Use the filters below to find and compare flights from Australia to Ontario that are best for you.

Fly from

Australia

Fly to

Ontario

Route

Depart

Return

Price

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

jue. 3/5

11:40 am-5:41 pm

1 stop24h 01m

Ontario

dom. 3/15

6:37 pm-6:30 am

1 stop18h 53m

$833

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

lun. 2/16

11:40 am-12:38 pm

1 stop18h 58m

Ontario

jue. 2/19

1:50 pm-7:30 am

1 stop23h 40m

$833

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

jue. 3/12

10:40 am-5:41 pm

1 stop24h 01m

Ontario

jue. 3/19

1:40 pm-6:30 am

1 stop23h 50m

$834

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

mié. 2/18

11:40 am-12:48 pm

1 stop19h 08m

Ontario

dom. 2/22

6:37 pm-7:30 am

1 stop18h 53m

$834

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

mié. 2/11

11:40 am-5:43 pm

1 stop24h 03m

Ontario

mié. 2/18

1:45 pm-7:30 am

2 stops23h 45m

$834

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

jue. 2/26

7:05 am-10:57 pm

2 stops33h 52m

Ontario

lun. 3/2

6:10 am-7:30 am

1 stop31h 20m

$1,057

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

jue. 2/5

9:40 pm-10:28 pm

1 stop19h 48m

Ontario

mié. 2/11

8:13 am-7:45 pm

1 stop40h 32m

$1,059

MelbourneOntario

MEL - ONT

MELONT

Melbourne

vie. 3/20

12:00 pm-12:18 pm

1 stop18h 18m

Ontario

jue. 3/26

1:50 pm-9:00 am

2 stops49h 10m

$1,062

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

mié. 2/25

11:50 am-9:59 pm

1 stop29h 09m

Ontario

mié. 3/4

5:00 am-9:15 am

2 stops33h 15m

$1,066

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

mar. 4/28

10:20 am-6:02 pm

1 stop24h 42m

Ontario

lun. 5/4

7:00 am-6:55 am

2 stops54h 55m

$1,066

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/24

Showing 1-10 of 60 results
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Best time to book a flight from Australia to Ontario

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

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

Currently, March is the cheapest month in which you can book a flight from Australia to Ontario (average of $560). Flying from Australia to Ontario in December is currently the most expensive (average of $645). 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 Australia 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 Australia?

    Ontario (ONT) is the airport you will fly into if you book a flight from Australia to Ontario. It is only a 3.1 mi journey from Ontario (ONT) to Ontario’s city center.

  • How long is the flight from Australia to Ontario?

    There are many flights that can get you from Australia to Ontario in 24h 01m. Fly via United Airlines to get the fastest option. The distance from Australia to Ontario is about 7207 mi.

  • What are the most popular routes from Australia to Ontario?

    The most popular flight routes from Australia to Ontario are Sydney Kingsford Smith - Ontario, Melbourne - Ontario and Brisbane - Ontario.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Australia to Ontario (average of $560). Flying from Australia to Ontario in December is currently the most expensive (average of $645). 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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