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Cheap flights from Sydney to Ontario from $696

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 20/10. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
11 Jul — 18 Jul1
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 11 June 2026.

Tue 20/1020:45
SYD
-
ONT
1 stop18h 37m
Multiple Airlines
Wed 21/1007:00
ONT
-
SYD
1 stop17h 50m
Multiple Airlines
Deal found 9/6$1,197
Thu 10/910:20
SYD
-
ONT
2 stops27h 33m
United Airlines
Mon 14/905:00
ONT
-
SYD
2 stops32h 55m
United Airlines
Deal found 9/6$1,209
Thu 11/610:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Wed 24/618:39
ONT
-
SYD
1 stop19h 16m
United Airlines
Deal found 9/6$1,210
Mon 13/710:20
SYD
-
ONT
1 stop18h 52m
United Airlines
Wed 29/718:39
ONT
-
SYD
1 stop19h 16m
United Airlines
Deal found 10/6$1,212
Tue 18/820:45
SYD
-
ONT
1 stop18h 00m
Multiple Airlines
Tue 1/909:31
ONT
-
SYD
1 stop40h 19m
Multiple Airlines
Deal found 9/6$1,215
Tue 20/1020:45
SYD
-
ONT
1 stop18h 37m
Multiple Airlines
Wed 28/1007:00
ONT
-
SYD
1 stop18h 45m
Multiple Airlines
Deal found 9/6$1,230
Thu 13/820:45
SYD
-
ONT
1 stop18h 00m
Multiple Airlines
Tue 18/809:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 6/6$1,233
Thu 11/610:20
SYD
-
ONT
2 stops27h 26m
United Airlines
Thu 18/618:30
ONT
-
SYD
2 stops43h 25m
United Airlines
Deal found 10/6$1,259
Wed 21/1011:20
SYD
-
ONT
1 stop17h 03m
United Airlines
Thu 29/1018:53
ONT
-
SYD
1 stop20h 22m
United Airlines
Deal found 9/6$1,260
Tue 14/720:45
SYD
-
ONT
1 stop18h 00m
Multiple Airlines
Thu 30/709:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 5/6$1,267
Tue 21/709:15
SYD
-
ONT
2 stops31h 33m
Delta
Tue 28/713:00
ONT
-
SYD
2 stops24h 50m
Delta
Deal found 6/6$1,277
Tue 20/1020:45
SYD
-
ONT
1 stop18h 37m
Multiple Airlines
Sat 31/1007:00
ONT
-
SYD
1 stop18h 45m
Multiple Airlines
Deal found 9/6$1,280

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 11 June 2026.

Round-trip from

$1,197

One-way from

$696

Popular in

December

Cheapest in

August

Average price

$1,307
20/10-21/10
  • 20/10-21/10
  • 2 total stops
  • 36h 27m total
  • Sydney to Ontario
Search Deals
United Airlines
  • United Airlines
  • 16/7
  • 1 total stop
  • 29h 17m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($116 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 June 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 11 June 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

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 1/10

10:20-12:18

1 stop18h 58m

Ontario

Sat 10/10

13:52-07:55

1 stop24h 03m

$1,259

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 21/7

09:15-23:48

2 stops31h 33m

Ontario

Tue 28/7

13:00-06:50

2 stops24h 50m

$1,277

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 23/6

10:20-12:12

1 stop18h 52m

Ontario

Tue 30/6

13:50-06:55

1 stop24h 05m

$1,351

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Tue 21/7

10:20-15:29

1 stop22h 09m

Ontario

Tue 28/7

06:00-06:55

1 stop31h 55m

$1,359

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 24/7

20:45-21:45

1 stop18h 00m

Ontario

Fri 31/7

09:11-18:50

1 stop40h 39m

$1,394
Fastest return journey

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 3/8

10:20-12:12

1 stop18h 52m

Ontario

Fri 7/8

18:39-06:55

1 stop19h 16m

$1,401

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 31/7

10:20-20:42

2 stops27h 22m

Ontario

Sun 2/8

05:00-06:55

2 stops56h 55m

$1,417

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 9/7

10:20-20:42

2 stops27h 22m

Ontario

Sat 25/7

05:45-06:55

2 stops56h 10m

$1,428

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Wed 8/7

10:20-22:37

1 stop29h 17m

Ontario

Wed 22/7

06:00-06:55

1 stop31h 55m

$1,438

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sat 1/8

10:20-12:12

1 stop18h 52m

Ontario

Sat 8/8

16:20-06:55

1 stop21h 35m

$1,451

Flights are sorted by cheapest return flights first.

Deals found on 10/6

Showing 1-10 of 21 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.

San Francisco (SFO) – chosen by Cheapflights users on 75% 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 $1,392.

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: 19h 00m.

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 3h 17m.

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 and Delta can get you from Sydney to Ontario in just under 18h 58m. Your travel time can differ by up to 12h 35m. There are 12125 km between Sydney and Ontario. This flight may include one or multiple stops.

  • 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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