Cheap flights from Ontario to Sydney from $721

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 24/11. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SYD
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Ontario to Sydney

Keep the following information in mind while searching for Ontario to Sydney flight deals. Data was last updated 18 September 2025.

Round-trip from

$1,676

One-way from

$721

Popular in

December

Cheapest in

April

Average price

$2,304
Alaska Airlines
  • Alaska Airlines
  • 15/11-21/11
  • 4 total stops
  • 92h 55m total
  • Ontario to Sydney
24/11
  • 24/11
  • 3 total stops
  • 57h 35m total
  • Ontario to Sydney
Highest demand for flights based on searches. 10% potential increase in price ($409 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease ($87 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from Ontario to Sydney

Cheapest flights from Ontario to Sydney
Explore the most affordable flight options available from Ontario to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Sat 15/1116:45YYZ - SYD
2 stops59h 00mAlaska Airlines
Fri 21/1121:40SYD - YYZ
2 stops33h 55mAlaska Airlines
Deal found 16/9$1,676
Mon 17/1116:45YYZ - SYD
2 stops59h 00mAlaska Airlines
Fri 21/1121:40SYD - YYZ
2 stops33h 55mAlaska Airlines
Deal found 16/9$1,686
Sun 16/1116:45YYZ - SYD
2 stops35h 00mAlaska Airlines
Fri 21/1121:40SYD - YYZ
2 stops57h 55mAlaska Airlines
Deal found 16/9$1,704
Thu 16/1016:45YYZ - SYD
2 stops36h 00mAlaska Airlines
Tue 21/1021:40SYD - YYZ
2 stops32h 20mAlaska Airlines
Deal found 15/9$1,709
Thu 16/1016:45YYZ - SYD
2 stops36h 00mAlaska Airlines
Tue 28/1021:40SYD - YYZ
2 stops32h 55mAlaska Airlines
Deal found 16/9$1,724
Mon 20/1010:40YYZ - SYD
1 stop29h 50mMultiple Airlines
Wed 22/1017:20SYD - YYZ
2 stops38h 18mMultiple Airlines
Deal found 16/9$1,727
Thu 16/1016:45YYZ - SYD
2 stops36h 00mAlaska Airlines
Sun 2/1121:40SYD - YYZ
2 stops33h 55mAlaska Airlines
Deal found 16/9$1,734
Fri 17/1016:45YYZ - SYD
2 stops36h 00mAlaska Airlines
Tue 21/1021:40SYD - YYZ
2 stops32h 20mAlaska Airlines
Deal found 15/9$1,758
Tue 14/1008:30YYZ - SYD
2 stops33h 30mMultiple Airlines
Tue 21/1014:15SYD - YYZ
2 stops30h 31mMultiple Airlines
Deal found 16/9$1,767
Fri 31/1012:05YOW - SYD
3 stops33h 25mMultiple Airlines
Fri 7/1114:00SYD - YOW
3 stops35h 46mMultiple Airlines
Deal found 16/9$2,130
Mon 17/1106:20YKF - SYD
2 stops34h 40mMultiple Airlines
Fri 28/1117:45SYD - YKF
2 stops27h 43mMultiple Airlines
Deal found 16/9$2,160
Sun 9/1107:30YUL - SYD
3 stops33h 15mMultiple Airlines
Mon 24/1113:55SYD - YUL
3 stops34h 31mMultiple Airlines
Deal found 16/9$2,185

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ontario to Sydney 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 18 September 2025.
Use the filters below to find and compare flights from Ontario to Sydney that are best for you.

Fly from

Ontario

Fly to

Sydney

Route

Depart

Return

Price

TorontoSydney

YYZ - SYD

YYZSYD

Toronto Pearson Intl

Wed 15/10

16:45-19:45

2 stops60h 00m

Sydney Kingsford Smith

Tue 21/10

21:40-15:00

2 stops32h 20m

$1,799

TorontoSydney

YYZ - SYD

YYZSYD

Toronto Pearson Intl

Wed 15/10

16:45-19:45

2 stops60h 00m

Sydney Kingsford Smith

Thu 23/10

21:40-15:00

2 stops56h 20m

$1,877

TorontoSydney

YYZ - SYD

YYZSYD

Toronto Pearson Intl

Fri 17/10

16:45-19:45

2 stops36h 00m

Sydney Kingsford Smith

Sat 25/10

21:40-15:35

2 stops32h 55m

$1,884

TorontoSydney

YYZ - SYD

YYZSYD

Toronto Pearson Intl

Tue 14/10

16:45-19:45

2 stops60h 00m

Sydney Kingsford Smith

Sat 25/10

21:40-15:35

2 stops32h 55m

$2,088

TorontoSydney

YKF - SYD

YKFSYD

Toronto Region of Waterloo Intl

Mon 17/11

06:20-09:00

2 stops34h 40m

Sydney Kingsford Smith

Fri 28/11

17:45-05:28

2 stops27h 43m

$2,160

TorontoSydney

YYZ - SYD

YYZSYD

Toronto Pearson Intl

Mon 17/11

16:45-19:45

2 stops59h 00m

Sydney Kingsford Smith

Tue 2/12

21:40-15:35

2 stops33h 55m

$2,226

TorontoSydney

YTZ - SYD

YTZSYD

Toronto Island

Mon 22/9

15:25-11:45

3 stops30h 20m

Sydney Kingsford Smith

Thu 2/10

13:15-09:45

3 stops34h 30m

$2,335

OttawaSydney

YOW - SYD

YOWSYD

Ottawa

Sat 29/11

19:30-09:05

2 stops45h 35m

Sydney Kingsford Smith

Mon 16/3

10:20-18:42

2 stops23h 22m

$2,344

OttawaSydney

YOW - SYD

YOWSYD

Ottawa

Mon 24/11

14:15-09:15

2 stops27h 00m

Sydney Kingsford Smith

Tue 17/3

12:10-21:14

2 stops24h 04m

$2,344

OttawaSydney

YOW - SYD

YOWSYD

Ottawa

Tue 25/11

14:15-09:15

2 stops27h 00m

Sydney Kingsford Smith

Sun 15/3

14:00-10:07

2 stops35h 07m

$2,344

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 60 results
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Best time to book a flight from Ontario to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Ontario 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 Ontario to Sydney

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

Currently, May is the cheapest month in which you can book a flight from Region of Ontario to Sydney (average of $129). Flying from Region of Ontario to Sydney in October is currently the most expensive (average of $171). 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 SYD?

Find hourly flight availability from Ontario to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 September 2025.

When flying from Region of Ontario to Sydney, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Sydney from Ontario?

    For a flight from Ontario to Sydney, you will be flying into Kingsford Smith. Sydney Kingsford Smith (SYD) is just 7.5 km from the centre of the city.

  • How long is the flight from Region of Ontario to Sydney?

    For as low as $2,374, Alaska Airlines can have you in Sydney from Region of Ontario in 25h 55m. The distance from Region of Ontario to Sydney is about 15562 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    $1,303 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Air New Zealand and United Airlines, with prices starting from $1,367 and $1,806, respectively.

  • What are the most popular routes from Region of Ontario to Sydney?

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Ontario to Sydney 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 Sydney?

    Currently, May is the cheapest month in which you can book a flight from Region of Ontario to Sydney (average of $129). Flying from Region of Ontario to Sydney in October is currently the most expensive (average of $171). 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

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Katoomba
Penrith
Manly
Terrigal
Lithgow
Randwick
Bondi Beach
Coogee
Cronulla
Leura

Browse thousands of different options on Cheapflights for your next trip

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Top 4 airlines flying from Ontario to Sydney

Discover the top 4 airlines that operate flights from Ontario to Sydney. 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 647,157 searches. Data last updated 18 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,324Average$2,277FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapest$1,537Average$2,384FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapest$1,606Average$2,466FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapest$1,911Average$2,144FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights

Fly with Cheapflights

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

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

Cheapflights helps you search for flights from Ontario to Sydney via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sydney from Ontario.

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

Certainly. Search results for flights to Sydney 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 Sydney become cheaper?

Not ready to book yet? You can track prices for flights from Ontario to Sydney on Cheapflights with our Price Alert feature and get notified when better prices are available.

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