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Cheap flights from Australia to Ontario from $689

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
27 Aug — 3 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to Ontario

Enter your travel dates to find the best prices.

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 28 July 2026.

Thu 29/1021:40
SYD
-
ONT
1 stop17h 49m
Multiple Airlines
Sat 31/1007:00
ONT
-
SYD
1 stop18h 45m
Multiple Airlines
Deal found 27/7$1,086
Wed 11/1109:15
SYD
-
ONT
2 stops30h 36m
United Airlines
Wed 18/1106:00
ONT
-
SYD
2 stops32h 20m
United Airlines
Deal found 27/7$1,142
Wed 26/810:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Mon 31/805:00
ONT
-
SYD
2 stops32h 55m
United Airlines
Deal found 28/7$1,145
Wed 9/909:15
SYD
-
ONT
2 stops29h 49m
Delta
Wed 16/909:52
ONT
-
SYD
2 stops27h 58m
Delta
Deal found 23/7$1,196
Mon 27/710:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Sun 9/818:39
ONT
-
SYD
1 stop19h 16m
United Airlines
Deal found 25/7$1,201
Sun 20/910:20
SYD
-
ONT
2 stops52h 39m
United Airlines
Sun 4/1005:00
ONT
-
SYD
2 stops32h 55m
United Airlines
Deal found 27/7$1,219
Sun 2/810:20
SYD
-
ONT
1 stop31h 07m
United Airlines
Sun 9/806:10
ONT
-
SYD
2 stops55h 45m
United Airlines
Deal found 25/7$1,252
Wed 19/810:55
MEL
-
ONT
1 stop18h 17m
United Airlines
Mon 24/819:13
ONT
-
MEL
1 stop20h 02m
United Airlines
Deal found 27/7$1,318
Mon 3/810:55
MEL
-
ONT
1 stop18h 17m
United Airlines
Sun 16/819:13
ONT
-
MEL
1 stop20h 02m
United Airlines
Deal found 28/7$1,319
Wed 5/810:30
BNE
-
ONT
1 stop18h 42m
United Airlines
Thu 27/813:18
ONT
-
BNE
2 stops48h 12m
United Airlines
Deal found 28/7$1,323
Mon 2/1112:00
MEL
-
ONT
2 stops29h 02m
Delta
Mon 16/1117:05
ONT
-
MEL
2 stops21h 45m
Delta
Deal found 24/7$1,333
Thu 10/1211:40
BNE
-
ONT
1 stop16h 17m
United Airlines
Sun 31/116:03
ONT
-
BNE
1 stop21h 27m
United Airlines
Deal found 24/7$1,341

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 28 July 2026.

Round-trip from

$1,086

One-way from

$689

Popular in

December

Cheapest in

August

Average price

$1,245
29/10-31/10
  • 29/10-31/10
  • 2 total stops
  • 36h 34m total
  • Australia to Ontario
Search Deals
Delta
  • Delta
  • 9/9
  • 2 total stops
  • 29h 49m total
  • Australia to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($134 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($40 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 647,157 searches. Data last updated 28 July 2026.
Use the filters below to find and compare flights from Australia to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 29/10

11:50-20:51

2 stops27h 01m

Ontario

Sat 31/10

13:29-09:20

2 stops49h 51m

$1,202

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 18/8

10:20-12:12

1 stop18h 52m

Ontario

Fri 28/8

13:18-06:55

2 stops48h 37m

$1,219

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 17/8

10:20-21:59

2 stops28h 39m

Ontario

Fri 21/8

19:13-06:55

1 stop18h 42m

$1,253

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Thu 20/8

10:55-20:53

2 stops26h 58m

Ontario

Mon 24/8

05:00-08:15

2 stops58h 15m

$1,319

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Mon 17/8

10:55-18:11

1 stop24h 16m

Ontario

Mon 24/8

19:13-08:15

1 stop20h 02m

$1,319
Fastest return journey

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Wed 12/8

10:30-12:12

1 stop18h 42m

Ontario

Wed 19/8

13:56-06:30

1 stop23h 34m

$1,341

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Fri 4/9

10:30-12:12

1 stop18h 42m

Ontario

Sat 19/9

13:18-06:30

2 stops48h 12m

$1,341

BrisbaneOntario

BNE - ONT

BNEONT

Brisbane

Wed 11/11

11:40-15:33

1 stop21h 53m

Ontario

Thu 19/11

13:29-07:30

2 stops24h 01m

$1,341

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Thu 20/8

10:55-20:53

2 stops26h 58m

Ontario

Thu 17/9

19:13-08:15

1 stop20h 02m

$1,389

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 11/12

12:45-12:20

1 stop18h 35m

Ontario

Sun 13/12

05:00-10:30

2 stops34h 30m

$1,401

Flights are sorted by cheapest return flights first.

Deals found on 26/7

Showing 1-10 of 60 resultsSorted by cheapest first
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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 return 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

No data available for this route at this time. Please check back soon.

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?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Australia. Ontario is conveniently located just 4.9 km from Ontario’s city centre.

  • How long is the flight from Australia to Ontario?

    United Airlines can get you from Australia to Ontario in just under 27h 01m. Your travel time can differ by up to . The distance between Australia and Ontario is about 12125 km.

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

    While some choose either Melbourne - Ontario or Brisbane - Ontario, Sydney Kingsford Smith - Ontario is the most popular route from Australia to 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 holiday 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.

See more FAQs

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How does Cheapflights help users find flights from Australia to Ontario?

Cheapflights makes it easy to find Australia to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Australia to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from Australia.

Can Cheapflights find flights from Australia to Ontario with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Australia to Ontario, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Australia to Ontario become cheaper?

Not ready to book yet? You can track prices for flights from Australia to Ontario on Cheapflights with our Price Alert feature and get notified when better prices are available.

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