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Cheap flights from Australia to Ontario from $818

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 29/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
20 Jun — 27 Jun1
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 21 May 2026.

Thu 15/1020:45
SYD
-
ONT
1 stop18h 37m
Multiple Airlines
Thu 29/1007:00
ONT
-
SYD
1 stop18h 45m
Multiple Airlines
Deal found 18/5$1,261
Thu 21/520:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Tue 23/609:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 19/5$1,267
Sun 7/620:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Sun 21/609:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 18/5$1,279
Tue 16/620:45
SYD
-
ONT
1 stop18h 00m
Multiple Airlines
Tue 23/609:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 18/5$1,281
Tue 2/620:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Sun 28/609:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 16/5$1,284
Fri 28/820:45
SYD
-
ONT
1 stop18h 25m
Multiple Airlines
Fri 4/909:31
ONT
-
SYD
1 stop40h 19m
Multiple Airlines
Deal found 20/5$1,295
Sat 31/1021:40
SYD
-
ONT
1 stop17h 21m
Multiple Airlines
Tue 24/1109:00
ONT
-
SYD
1 stop39h 45m
Multiple Airlines
Deal found 17/5$1,307
Fri 5/620:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Fri 12/609:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 17/5$1,320
Tue 2/620:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Tue 9/609:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 17/5$1,340
Tue 16/609:15
SYD
-
ONT
2 stops31h 34m
Delta
Tue 23/606:00
ONT
-
SYD
2 stops31h 50m
Delta
Deal found 18/5$1,348
Sun 7/620:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Wed 29/709:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 19/5$1,351
Thu 28/520:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Fri 29/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 20/5$1,352

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 21 May 2026.

Round-trip from

$1,261

One-way from

$818

Popular in

December

Cheapest in

August

Average price

$1,181
15/10-29/10
  • 15/10-29/10
  • 2 total stops
  • 37h 22m total
  • Australia to Ontario
Search Deals
Delta
  • Delta
  • 29/5
  • 2 total stops
  • 23h 17m total
  • Australia to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($127 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($37 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 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 21 May 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

Wed 3/6

10:20-12:12

1 stop18h 52m

Ontario

Wed 22/7

05:00-06:55

2 stops32h 55m

$1,371

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Mon 1/6

10:55-17:56

1 stop24h 01m

Ontario

Mon 8/6

18:39-08:15

1 stop20h 36m

$1,415

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 7/8

10:55-12:12

1 stop18h 17m

Ontario

Fri 14/8

19:13-08:15

1 stop20h 02m

$1,417

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Fri 12/6

10:55-12:12

1 stop18h 17m

Ontario

Sat 20/6

18:39-08:15

1 stop20h 36m

$1,418

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Tue 8/9

10:55-14:01

1 stop20h 06m

Ontario

Tue 15/9

13:18-08:15

2 stops25h 57m

$1,436

MelbourneOntario

MEL - ONT

MELONT

Melbourne

Tue 13/10

11:55-17:51

1 stop23h 56m

Ontario

Fri 23/10

18:32-09:15

1 stop20h 43m

$1,436

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 26/7

10:20-22:37

1 stop29h 17m

Ontario

Tue 18/8

05:00-06:55

2 stops32h 55m

$1,441

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 6/8

10:20-12:12

1 stop18h 52m

Ontario

Fri 21/8

05:00-06:55

2 stops32h 55m

$1,441

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sat 3/10

10:20-12:12

1 stop18h 52m

Ontario

Tue 3/11

18:53-09:15

1 stop19h 22m

$1,442

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 1/6

10:20-12:12

1 stop18h 52m

Ontario

Fri 5/6

18:39-06:55

1 stop19h 16m

$1,442

Flights are sorted by cheapest return flights first.

Deals found on 20/5

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 18h 52m. 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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