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Cheap flights from Sydney to Ontario from $692

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 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
23 Aug — 30 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Sydney to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Sydney to Ontario
Explore the most affordable flight options available from Sydney to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 24 July 2026.

Thu 3/909:15
SYD
-
ONT
2 stops31h 19m
Delta
Thu 10/913:04
ONT
-
SYD
2 stops24h 46m
Delta
Deal found 20/7$1,175
Wed 2/910:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Wed 9/913:56
ONT
-
SYD
1 stop23h 59m
United Airlines
Deal found 19/7$1,202
Wed 2/910:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Wed 16/907:00
ONT
-
SYD
2 stops30h 55m
United Airlines
Deal found 20/7$1,203
Thu 23/710:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Wed 5/818:39
ONT
-
SYD
1 stop19h 16m
United Airlines
Deal found 20/7$1,205
Sun 6/909:15
SYD
-
ONT
2 stops30h 08m
Delta
Sun 13/906:00
ONT
-
SYD
2 stops31h 50m
Delta
Deal found 23/7$1,248
Sun 27/1209:15
SYD
-
ONT
1 stop31h 30m
United Airlines
Mon 18/111:20
ONT
-
SYD
1 stop24h 00m
United Airlines
Deal found 19/7$1,253
Fri 7/820:45
SYD
-
ONT
1 stop18h 00m
Multiple Airlines
Fri 21/809:31
ONT
-
SYD
1 stop40h 19m
Multiple Airlines
Deal found 20/7$1,271
Wed 22/710:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Wed 29/718:39
ONT
-
SYD
1 stop19h 16m
United Airlines
Deal found 21/7$1,279
Mon 27/710:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Mon 3/818:39
ONT
-
SYD
1 stop19h 16m
United Airlines
Deal found 21/7$1,281

Find flight deals from Sydney to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Sydney (SYD) to Ontario (ONT). 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 24 July 2026.

Round-trip from

$1,175

One-way from

$692

Popular in

December

Cheapest in

August

Average price

$1,238
Delta
  • Delta
  • 3/9-10/9
  • 4 total stops
  • 56h 05m total
  • Sydney to Ontario
Search Deals
United Airlines
  • United Airlines
  • 4/11
  • 2 total stops
  • 28h 06m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($130 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($39 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 Sydney 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 24 July 2026.
Use the filters below to find and compare flights from Sydney to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 7/12

11:50-12:20

1 stop19h 30m

Ontario

Sun 3/1

16:00-06:20

1 stop19h 20m

$1,203

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 19/11

11:50-17:55

1 stop25h 05m

Ontario

Tue 5/1

18:53-09:20

1 stop19h 27m

$1,203

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Wed 30/9

10:20-10:23

1 stop17h 03m

Ontario

Wed 14/10

16:03-07:55

1 stop21h 52m

$1,205

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Wed 30/9

10:20-20:58

2 stops27h 38m

Ontario

Thu 8/10

05:00-07:55

2 stops32h 55m

$1,329

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 3/8

10:20-12:12

1 stop18h 52m

Ontario

Fri 21/8

05:00-06:55

2 stops32h 55m

$1,331

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 3/9

20:45-22:10

1 stop18h 25m

Ontario

Wed 16/9

09:31-18:50

1 stop40h 19m

$1,375

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 6/9

20:45-22:10

1 stop18h 25m

Ontario

Wed 16/9

09:31-18:50

1 stop40h 19m

$1,375

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 30/10

11:50-12:01

1 stop18h 11m

Ontario

Fri 6/11

16:04-09:20

1 stop22h 16m

$1,381

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 6/9

20:45-22:10

1 stop18h 25m

Ontario

Sun 13/9

09:31-18:50

1 stop40h 19m

$1,457

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 8/9

20:45-11:16

2 stops31h 31m

Ontario

Tue 15/9

09:31-18:50

1 stop40h 19m

$1,716

Flights are sorted by cheapest return flights first.

Deals found on 19/7

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Sydney to Ontario

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

What’s the top stopover airport for flights from Sydney to Ontario?

Share of one-stop return flights from Sydney to Ontario chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Taipei City (TPE) – chosen by Cheapflights users on 50% of one-stop itineraries from Sydney to Ontario on Cheapflights.

What’s the cheapest stopover airport for flights from Sydney to Ontario?

Average return fare for one-stop flights from Sydney to Ontario, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

San Francisco (SFO) is the most affordable one-stop option, with an average return flight price of $1,484.

What’s the fastest stopover option from Sydney to Ontario?

Shortest average travel time for one-stop one-way flights from Sydney to Ontario, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via San Francisco (SFO) have the shortest average one-way travel time for one-stop routes: 18h 52m.

Which airport typically offers the quickest stopover for flights from Sydney to Ontario?

Average stopover duration for one-stop one-way flights from Sydney to Ontario, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via San Francisco (SFO) offer the fastest connection on this route, with an average stopover time of 2h 56m.

Related info for your journey

Find useful and relevant information for your journey from Sydney to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Sydney to Ontario?

    United Airlines can get you from Sydney to Ontario in just under 19h 30m. Your travel time can differ by up to . There are 12125 km between Sydney and Ontario.

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

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

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

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

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

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

Cheapflights makes it easy to find Sydney 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 Sydney to Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Sydney to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

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

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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