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Cheap flights from Australia to Ontario from $663

SYD — ONT
20 Nov — 27 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Australia to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Australia to Ontario

Tue 3/1121:40 -
1 stop20h 03m
Tue 17/1109:55 -
1 stop38h 50m
Deal found 18/10$1,109
Mon 19/1011:20 -
1 stop18h 58m
Tue 3/1116:17 -
1 stop22h 03m
Deal found 17/10$1,161
Thu 22/1011:20 -
1 stop18h 58m
Wed 4/1116:17 -
1 stop22h 03m
Deal found 20/10$1,162
Mon 2/1111:50 -
1 stop19h 39m
Mon 9/1118:37 -
1 stop19h 43m
Deal found 16/10$1,171
Thu 22/1011:20 -
1 stop18h 58m
Wed 4/1116:17 -
1 stop22h 03m
Deal found 20/10$1,172
Mon 19/1011:20 -
1 stop18h 58m
Tue 3/1116:17 -
1 stop22h 03m
Deal found 18/10$1,174
Thu 29/1011:50 -
1 stop26h 25m
Mon 2/1106:00 -
1 stop32h 20m
Deal found 18/10$1,175
Tue 8/1211:20 -
1 stop16h 18m
Thu 24/1218:27 -
1 stop19h 03m
Deal found 16/10$1,282
Thu 24/1211:20 -
1 stop29h 33m
Thu 31/1205:00 -
2 stops32h 30m
Deal found 17/10$1,285
Fri 27/1111:20 -
1 stop26h 55m
Fri 1/106:00 -
1 stop31h 30m
Deal found 18/10$1,287
Mon 26/1011:45 -
1 stop18h 44m
Sun 8/1118:37 -
1 stop20h 53m
Deal found 20/10$1,288
Fri 30/1010:20 -
1 stop19h 09m
Fri 13/1118:37 -
1 stop18h 53m
Deal found 21/10$1,291

Find flight deals from Australia to Ontario

Round-trip from

$1,109

One-way from

$663

Popular in

December

Cheapest in

August

Average price

$1,129
3/11-17/11
  • 3/11-17/11
  • 2 total stops
  • 58h 53m total
  • Australia to Ontario
Search Deals
17/11-31/12
  • 17/11-31/12
  • 1 total stop
  • 20h 03m total
  • Australia to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($139 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($46 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 Australia 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

Mon 26/10

10:15-20:51

2 stops28h 36m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$675

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Wed 18/11

11:50-12:29

1 stop19h 39m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$675

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Mon 23/11

09:15-12:33

2 stops46h 18m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$675

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Wed 18/11

11:20-15:33

1 stop22h 13m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$742

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Mon 16/11

11:20-20:51

2 stops27h 31m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$742

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Mon 1/2

11:20-12:40

2 stops43h 20m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$743

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Wed 27/1

11:20-12:40

2 stops43h 20m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$743

BrisbaneOntario

BNE Brisbane - ONT Ontario

BNEONT

Brisbane

Sat 21/11

11:20-18:01

1 stop24h 41m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$748

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

$758

SydneyOntario

SYD Sydney Kingsford Smith - ONT Ontario

SYDONT

Sydney Kingsford Smith

Sat 31/10

11:50-18:01

1 stop24h 11m

Ontario

Wed 31/12

00:00-18:00

Nonstop0h 00m

$758

Flights are sorted by cheapest return flights first.

Deals found on 17/10

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Australia to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Australia with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Australia to Ontario

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Ontario

Check out reviews from past customers who have flown with United Airlines from Australia to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.3
Good
10,392 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Food

6.7

Boarding

7.7

Overall

7.3

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
10,392 reviews
United Airlines
7.3
Good
10,392 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Food

6.7

Boarding

7.7

Overall

7.3

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

  • What airport do you fly into for flights to Ontario from Australia?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Australia. Ontario is conveniently located just 4.9 km from Ontario’s city centre.

  • How long is the flight from Australia to Ontario?

    United Airlines can get you from Australia to Ontario in just under 42h 40m. Your travel time can differ by up to . The distance between Australia and Ontario is about 12125 km.

  • What are the most popular routes from Australia to Ontario?

    While some choose either Melbourne - Ontario or Perth - Ontario, Sydney Kingsford Smith - Ontario is the most popular route from Australia to Ontario.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Australia 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 Australia to Ontario

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$1,054Average$1,286FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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

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

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