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Cheap flights from Sydney to Ontario from $663

SYD — ONT
25 Nov — 2 Dec1
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

Thu 29/1011:50 -
1 stop18h 39m
Wed 11/1116:17 -
1 stop22h 03m
Deal found 25/10$1,169
Mon 26/1011:50 -
1 stop18h 39m
Sun 8/1116:17 -
1 stop22h 03m
Deal found 24/10$1,172
Wed 11/1111:50 -
1 stop19h 39m
Wed 18/1106:00 -
1 stop30h 00m
Deal found 23/10$1,180
Thu 19/1111:50 -
1 stop29h 58m
Sun 13/1205:00 -
2 stops30h 20m
Deal found 26/10$1,183
Sun 1/1121:40 -
1 stop20h 03m
Sun 8/1109:55 -
1 stop38h 50m
Deal found 25/10$1,217

Find flight deals from Sydney to Ontario

Round-trip from

$1,144

One-way from

$663

Popular in

December

Cheapest in

August

Average price

$1,123
9/2-28/2
  • 9/2-28/2
  • 2 total stops
  • 58h 23m total
  • Sydney to Ontario
Search Deals
1/2-31/12
  • 1/2-31/12
  • 1 total stop
  • 18h 38m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($146 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($50 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
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 Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Tue 23/3

13:20-20:32

2 stops25h 12m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$678

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 16/11

09:15-21:40

1 stop31h 25m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$678

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 22/3

11:50-22:59

1 stop29h 09m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$678

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 15/3

11:50-12:42

2 stops42h 52m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$679
Fastest return journey

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sun 28/3

11:20-09:57

1 stop16h 37m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$762

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sun 4/4

10:20-17:47

1 stop24h 27m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$762

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Fri 13/11

11:50-17:56

1 stop25h 06m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$762

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sat 14/11

11:50-12:29

1 stop19h 39m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$762

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sun 6/12

11:50-20:38

1 stop27h 48m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$763

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sun 21/3

21:40-21:28

1 stop17h 48m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$797

Flights are sorted by cheapest return flights first.

Deals found on 24/10

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

Reviews of airlines servicing Ontario

Read reviews from past customers who have flown with United Airlines from Sydney to Ontario. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.3
Good
10,440 reviews
Check prices

Entertainment

7.1

Food

6.7

Overall

7.3

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.3
Good
10,440 reviews
United Airlines
7.3
Good
10,440 reviews
Check prices

Entertainment

7.1

Food

6.7

Overall

7.3

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

  • How long is the flight from Sydney to Ontario?

    United Airlines can get you from Sydney to Ontario in just under 18h 39m. Your travel time can differ by up to . There are 12125 km between Sydney and Ontario.

  • What is the cheapest airline to fly from Sydney to Ontario round-trip?

    United Airlines, at $1,050, was found to be the cheapest airline from Sydney to 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Sydney to Ontario

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,050Average$1,263FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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.

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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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