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Cheap flights from Sydney to Ontario from $816

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
SYD — ONT
29 May — 5 Jun1
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 29 April 2026.

Tue 19/520:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Tue 26/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 25/4$1,237
Tue 28/420:45
SYD
-
ONT
1 stop17h 25m
Multiple Airlines
Tue 26/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 27/4$1,239
Tue 4/820:45
SYD
-
ONT
1 stop18h 00m
Multiple Airlines
Wed 19/807:20
ONT
-
SYD
1 stop18h 30m
Multiple Airlines
Deal found 28/4$1,297
Sun 24/520:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Sun 31/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 25/4$1,303
Tue 28/420:45
SYD
-
ONT
1 stop17h 25m
Multiple Airlines
Fri 29/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 26/4$1,304
Tue 26/509:15
SYD
-
ONT
2 stops31h 19m
Delta
Tue 2/613:29
ONT
-
SYD
2 stops24h 21m
Delta
Deal found 27/4$1,343
Thu 28/520:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Fri 5/609:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 27/4$1,346
Fri 31/720:45
SYD
-
ONT
1 stop18h 00m
Multiple Airlines
Wed 19/807:20
ONT
-
SYD
1 stop18h 30m
Multiple Airlines
Deal found 28/4$1,367
Fri 1/520:45
SYD
-
ONT
1 stop17h 25m
Multiple Airlines
Wed 29/709:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 25/4$1,368
Sat 6/620:45
SYD
-
ONT
1 stop18h 32m
Multiple Airlines
Thu 25/609:11
ONT
-
SYD
1 stop40h 39m
Multiple Airlines
Deal found 27/4$1,370
Fri 8/520:45
SYD
-
ONT
1 stop17h 25m
Multiple Airlines
Tue 19/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 24/4$1,372
Fri 8/520:45
SYD
-
ONT
1 stop17h 25m
Multiple Airlines
Fri 29/509:40
ONT
-
SYD
1 stop40h 10m
Multiple Airlines
Deal found 27/4$1,375

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 29 April 2026.

Round-trip from

$1,237

One-way from

$816

Popular in

December

Cheapest in

August

Average price

$1,271
19/5-26/5
  • 19/5-26/5
  • 2 total stops
  • 58h 42m total
  • Sydney to Ontario
Search Deals
14/5
  • 14/5
  • 1 total stop
  • 18h 32m total
  • Sydney 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 April 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 29 April 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

Wed 29/7

10:20-12:12

1 stop18h 52m

Ontario

Wed 5/8

18:39-06:55

1 stop19h 16m

$1,414

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Wed 10/6

10:20-12:12

1 stop18h 52m

Ontario

Wed 24/6

18:39-06:55

1 stop19h 16m

$1,421

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Sun 10/5

20:45-21:10

1 stop17h 25m

Ontario

Wed 27/5

09:40-18:50

1 stop40h 10m

$1,482

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 15/10

20:45-21:28

1 stop18h 43m

Ontario

Thu 5/11

12:00-19:45

2 stops36h 45m

$1,884

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 16/10

20:45-21:28

1 stop18h 43m

Ontario

Thu 12/11

16:00-19:45

2 stops32h 45m

$1,953

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 18/6

20:45-21:45

1 stop18h 00m

Ontario

Wed 15/7

09:11-18:50

1 stop40h 39m

$1,995

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Mon 8/6

10:20-12:12

1 stop18h 52m

Ontario

Wed 22/7

18:39-06:55

1 stop19h 16m

$2,037

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Fri 8/5

20:45-21:10

1 stop17h 25m

Ontario

Mon 11/5

19:59-18:50

2 stops53h 51m

$2,346

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 9/7

20:45-21:45

1 stop18h 00m

Ontario

Thu 30/7

17:26-18:50

2 stops32h 24m

$2,382

SydneyOntario

SYD - ONT

SYDONT

Sydney Kingsford Smith

Thu 15/10

22:10-18:00

1 stop37h 50m

Ontario

Sun 18/10

00:10-11:45

1 stop41h 35m

$2,490

Flights are sorted by cheapest return flights first.

Deals found on 25/4

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 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 $1,318.

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 Honolulu (HNL) have the shortest average one-way travel time for one-stop routes: 18h 02m.

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 Honolulu (HNL) offer the fastest connection on this route, with an average stopover time of 2h 08m.

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 18h 52m. 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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