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Cheap flights from Sydney to Ontario from $720

SYD — ONT
11 Oct — 18 Oct1
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 10/920:45 -
1 stop18h 25m
Wed 23/909:31 -
1 stop40h 19m
Deal found 9/9$1,180
Thu 8/1011:20 -
1 stop18h 58m
Wed 21/1016:03 -
1 stop21h 52m
Deal found 11/9$1,184
Wed 23/910:20 -
1 stop18h 52m
Sun 18/1016:03 -
1 stop21h 52m
Deal found 10/9$1,197
Mon 14/910:20 -
1 stop18h 52m
Tue 29/916:03 -
1 stop21h 52m
Deal found 8/9$1,199
Mon 21/910:20 -
1 stop29h 31m
Tue 13/1011:10 -
1 stop26h 45m
Deal found 9/9$1,201
Thu 8/1011:20 -
1 stop18h 58m
Wed 21/1016:03 -
1 stop21h 52m
Deal found 11/9$1,202
Tue 8/1211:50 -
1 stop16h 48m
Sun 10/118:53 -
1 stop19h 27m
Deal found 10/9$1,255
Tue 8/1211:50 -
1 stop16h 48m
Mon 11/118:53 -
1 stop19h 27m
Deal found 10/9$1,261

Find flight deals from Sydney to Ontario

Round-trip from

$1,184

One-way from

$720

Popular in

December

Cheapest in

August

Average price

$1,106
Lufthansa
  • Lufthansa
  • 8/10-21/10
  • 2 total stops
  • 40h 50m total
  • Sydney to Ontario
Search Deals
Delta
  • Delta
  • 21/9-31/12
  • 2 total stops
  • 31h 32m total
  • Sydney to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($125 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($40 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2026
Search Deals

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 16/2

11:50-20:20

2 stops27h 30m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$757

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 9/11

11:50-15:33

1 stop22h 43m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$757

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Wed 7/10

11:20-12:46

2 stops43h 26m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$760
Fastest return journey

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Tue 19/1

11:50-15:27

1 stop22h 37m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$762

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sat 7/11

11:50-20:51

2 stops28h 01m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$842

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sun 1/11

09:15-22:41

1 stop31h 26m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$845

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Tue 15/12

13:20-17:36

1 stop23h 16m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$1,077

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sun 13/12

11:50-17:36

1 stop24h 46m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$1,160

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 21/9

10:20-12:50

2 stops43h 30m

Ontario

Tue 13/10

13:52-07:55

1 stop24h 03m

$1,201

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sat 31/10

11:50-12:29

1 stop18h 39m

Ontario

Sat 7/11

13:29-07:00

2 stops46h 31m

$1,278

Flights are sorted by cheapest return flights first.

Deals found on 11/9

Showing 1-10 of 22 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
7.4
Good
10,201 reviews
Check prices

Boarding

7.7

Overall

7.4

Crew

8.1

Food

6.7

Entertainment

7.1

Comfort

7.3

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
7.4
Good
10,201 reviews
United Airlines
7.4
Good
10,201 reviews
Check prices

Boarding

7.7

Overall

7.4

Crew

8.1

Food

6.7

Entertainment

7.1

Comfort

7.3

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 43h 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Sydney to Ontario

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,029Average$1,121FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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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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