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Cheap flights from Ontario to Australia from C$ 815

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 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SYD
15 Jan — 22 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Australia

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Australia
Explore the most affordable flight options available from Ontario to Australia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 December 2025.

Mon 29/121:55 p.m.YYZ - MEL
1 stop30h 35mCathay Pacific
Fri 23/18:40 a.m.MEL - YYZ
1 stop43h 35mCathay Pacific
Deal found 15/12C$ 1,863
Sun 28/121:55 p.m.YYZ - SYD
1 stop27h 40mCathay Pacific
Sun 1/210:20 p.m.SYD - YYZ
1 stop38h 40mCathay Pacific
Deal found 15/12C$ 1,907
Tue 23/1212:35 a.m.YYZ - SYD
1 stop43h 25mCathay Pacific
Tue 3/23:15 p.m.SYD - YYZ
1 stop37h 00mCathay Pacific
Deal found 16/12C$ 1,937
Fri 26/121:55 p.m.YYZ - SYD
1 stop27h 40mCathay Pacific
Tue 3/210:20 p.m.SYD - YYZ
1 stop29h 55mCathay Pacific
Deal found 15/12C$ 1,977
Sat 27/121:55 p.m.YYZ - SYD
1 stop30h 05mCathay Pacific
Tue 3/211:05 a.m.SYD - YYZ
1 stop41h 10mCathay Pacific
Deal found 15/12C$ 2,007
Sun 28/121:55 p.m.YYZ - SYD
1 stop27h 40mCathay Pacific
Fri 6/211:05 a.m.SYD - YYZ
1 stop41h 10mCathay Pacific
Deal found 15/12C$ 2,042
Fri 26/121:55 p.m.YYZ - SYD
1 stop30h 05mCathay Pacific
Wed 4/211:05 a.m.SYD - YYZ
1 stop25h 55mCathay Pacific
Deal found 15/12C$ 2,076
Sat 27/121:55 p.m.YYZ - SYD
1 stop27h 40mCathay Pacific
Wed 4/211:05 a.m.SYD - YYZ
1 stop25h 55mCathay Pacific
Deal found 15/12C$ 2,106
Fri 26/121:55 p.m.YYZ - SYD
1 stop27h 40mCathay Pacific
Thu 5/23:15 p.m.SYD - YYZ
1 stop37h 00mCathay Pacific
Deal found 15/12C$ 2,112
Sat 27/121:55 p.m.YYZ - SYD
1 stop27h 40mCathay Pacific
Thu 5/23:15 p.m.SYD - YYZ
1 stop37h 00mCathay Pacific
Deal found 15/12C$ 2,142
Wed 31/1210:00 a.m.YYZ - SYD
1 stop29h 25mMultiple Airlines
Sun 18/112:35 p.m.SYD - YYZ
2 stops41h 05mMultiple Airlines
Deal found 15/12C$ 2,149
Sun 28/121:55 p.m.YYZ - SYD
1 stop27h 40mMultiple Airlines
Sun 1/212:35 p.m.SYD - YYZ
2 stops33h 35mMultiple Airlines
Deal found 15/12C$ 2,157

Find flight deals from Ontario to Australia

Keep the following information in mind while searching for Ontario to Australia flight deals. Data was last updated 16 December 2025.

Round-trip from

C$ 1,331

One-way from

C$ 815

Popular in

December

Cheapest in

April

Average price

C$ 2,751

Good round-trip deal

C$ 1,769 or less
Delta
  • Delta
  • 2/5-27/5
  • 4 total stops
  • 79h 45m total
  • Ontario to Australia
Search Deals
Delta
  • Delta
  • 21/1
  • 2 total stops
  • 33h 30m total
  • Ontario to Australia
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 314 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 73 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Ontario to Australia.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Australia 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 629,999 searches. Data last updated 16 December 2025.
Use the filters below to find and compare flights from Ontario to Australia that are best for you.

Fly from

Ontario

Fly to

Australia

Route

Depart

Return

Price

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 4/5

12:45 p.m.-6:35 a.m.

2 stops27h 50m

Sydney Kingsford Smith

Tue 26/5

9:15 a.m.-11:34 p.m.

2 stops28h 19m

C$ 1,331

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 12/4

12:42 p.m.-6:35 a.m.

2 stops27h 53m

Sydney Kingsford Smith

Sun 26/4

9:15 a.m.-11:58 p.m.

2 stops28h 43m

C$ 1,331

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sat 2/5

12:45 p.m.-6:35 a.m.

2 stops51h 50m

Sydney Kingsford Smith

Tue 26/5

9:15 a.m.-11:10 p.m.

2 stops27h 55m

C$ 1,331

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Wed 6/5

7:00 a.m.-6:35 a.m.

2 stops33h 35m

Sydney Kingsford Smith

Tue 26/5

9:15 a.m.-11:10 p.m.

2 stops27h 55m

C$ 1,331

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 26/1

6:00 a.m.-8:30 a.m.

2 stops34h 30m

Sydney Kingsford Smith

Tue 7/4

9:15 a.m.-11:37 a.m.

2 stops40h 22m

C$ 1,331

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 8/2

7:00 a.m.-6:50 a.m.

2 stops31h 50m

Sydney Kingsford Smith

Tue 24/2

10:40 a.m.-11:59 p.m.

2 stops29h 19m

C$ 1,331

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

6:00 a.m.-8:30 a.m.

2 stops34h 30m

Sydney Kingsford Smith

Wed 18/2

10:40 a.m.-11:59 p.m.

2 stops29h 19m

C$ 1,331

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 22/2

7:00 a.m.-6:50 a.m.

2 stops31h 50m

Sydney Kingsford Smith

Sun 8/3

10:40 a.m.-10:37 a.m.

2 stops39h 57m

C$ 1,331

OttawaSydney

YOW - SYD

YOWSYD

Ottawa

Sat 7/2

6:30 p.m.-9:35 a.m.

2 stops47h 05m

Sydney Kingsford Smith

Wed 18/2

11:20 a.m.-9:38 a.m.

2 stops38h 18m

C$ 1,439

TorontoMelbourne

YYZ - MEL

YYZMEL

Toronto Pearson Intl

Mon 2/2

5:55 p.m.-10:00 a.m.

1 stop24h 05m

Melbourne

Mon 16/2

1:00 p.m.-7:30 a.m.

1 stop34h 30m

C$ 1,463

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/12

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Best time to book a flight from Ontario to Australia

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

What is the cheapest month to book a flight from Region of Ontario to Australia?

Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Australia (average of C$ 302). Flying from Region of Ontario to Australia in November is currently the most expensive (average of C$ 763). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ON to AU?

Find hourly flight availability from Ontario to Australia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 December 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 8% on flights from Region of Ontario to Australia by exploring options for tickets in the evening.

What is the cheapest day to fly from Region of Ontario to Australia?

Use this chart to determine the cheapest time to fly round-trip from Ontario to Australia. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Region of Ontario to Australia flight should consider departing on Friday mornings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Australia. 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 Region of Ontario to Australia?

    There are many flights that can get you from Region of Ontario to Australia in 24h 05m. Fly via Delta, Air Canada, or United Airlines to get the fastest option. There are 16241 km between Region of Ontario and Australia. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Region of Ontario to Australia one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as C$ 612. However, be on the lookout for offers from WestJet and Air Canada, as they are both options that can get you from Region of Ontario to Australia for a low price.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Australia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Region of Ontario to Australia?

    Currently, September is the cheapest month in which you can book a flight from Region of Ontario to Australia (average of C$ 302). Flying from Region of Ontario to Australia in November is currently the most expensive (average of C$ 763). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Australia

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Ontario to Australia

Discover the top 10 airlines that operate flights from Ontario to Australia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 16 December 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 211AverageC$ 326FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Porter AirlinesCheapestC$ 246AverageC$ 374FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 347AverageC$ 2,309FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 373AverageC$ 1,307FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 437AverageC$ 1,486FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Fiji AirwaysCheapestC$ 935AverageC$ 1,165FlexibilityNo cancel feeOn-time74%
Search Fiji Airways flights
Cathay PacificCheapestC$ 1,077AverageC$ 2,246FlexibilityNo cancel feeOn-time72%
Search Cathay Pacific flights
China EasternCheapestC$ 1,175AverageC$ 2,412FlexibilityNo cancel feeOn-time62%
Search China Eastern flights
Alaska AirlinesCheapestC$ 1,220AverageC$ 1,574FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
China SouthernCheapestC$ 1,227AverageC$ 2,616FlexibilityNo cancel feeOn-time69%
Search China Southern flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Ontario to Australia?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Australia from Ontario today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ontario to Australia?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Australia.

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

Certainly. Search results for flights to Australia from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ontario to Australia become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Australia from Ontario today and book when prices fit your budget.

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