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Cheap flights from Ontario to Adelaide from $1,142

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — ADL
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Ontario to Adelaide

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Adelaide
Explore the most affordable flight options available from Ontario to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 November 2025.

Thu 4/1218:20YUL - ADL
2 stops30h 20mMultiple Airlines
Thu 15/106:10ADL - YUL
2 stops26h 20mMultiple Airlines
Deal found 6/11$2,245
Thu 4/1213:25YUL - ADL
2 stops30h 00mAir Canada
Thu 15/106:00ADL - YUL
3 stops32h 52mAir Canada
Deal found 6/11$2,267
Fri 5/1218:45YYZ - ADL
2 stops30h 05mMultiple Airlines
Fri 12/1219:55ADL - YYZ
2 stops35h 44mMultiple Airlines
Deal found 6/11$2,330
Mon 1/1218:20YUL - ADL
2 stops56h 20mAir Canada
Sun 7/1206:00ADL - YUL
2 stops30h 30mAir Canada
Deal found 6/11$2,350
Sun 9/1100:35YYZ - ADL
2 stops40h 25mMultiple Airlines
Tue 18/1107:45ADL - YYZ
2 stops44h 00mMultiple Airlines
Deal found 5/11$2,544
Mon 1/1220:50YUL - ADL
2 stops32h 20mQatar Airways
Sun 7/1222:00ADL - YUL
1 stop31h 35mQatar Airways
Deal found 6/11$2,650
Thu 13/1120:20YYZ - ADL
2 stops27h 35mMultiple Airlines
Wed 26/1106:00ADL - YYZ
2 stops30h 24mMultiple Airlines
Deal found 5/11$2,651
Wed 12/1100:35YYZ - ADL
2 stops39h 00mCathay Pacific
Wed 26/1112:00ADL - YYZ
1 stop39h 45mCathay Pacific
Deal found 5/11$2,801
Mon 10/1107:05YYZ - ADL
3 stops39h 10mQantas Airways
Tue 18/1109:00ADL - YYZ
2 stops29h 14mQantas Airways
Deal found 5/11$2,904
Mon 1/1210:35YUL - ADL
3 stops35h 40mMultiple Airlines
Sun 7/1220:55ADL - YUL
3 stops35h 35mMultiple Airlines
Deal found 6/11$3,272
Tue 16/1209:00YUL - ADL
2 stops34h 25mAir New Zealand
Wed 21/111:55ADL - YUL
2 stops34h 19mAir New Zealand
Deal found 6/11$3,604
Mon 15/1217:55YUL - ADL
2 stops50h 50mMultiple Airlines
Thu 15/113:15ADL - YUL
2 stops42h 42mMultiple Airlines
Deal found 6/11$3,619

Cheap flight deals from Ontario to Adelaide

Keep the following information in mind while searching for Ontario to Adelaide flight deals. Data was last updated 7 November 2025.

Round-trip from

$2,051

One-way from

$1,142

Popular in

December

Cheapest in

October

Average price

$2,725
United Airlines
  • United Airlines
  • 9/2-2/3
  • 3 total stops
  • 59h 20m total
  • Ontario to Adelaide
Search Deals
4/2
  • 4/2
  • 3 total stops
  • 51h 30m total
  • Ontario to Adelaide
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($467 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($107 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ontario to Adelaide 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 7 November 2025.
Use the filters below to find and compare flights from Ontario to Adelaide that are best for you.

Fly from

Ontario

Fly to

Adelaide

Route

Depart

Return

Price

TorontoAdelaide

YYZ - ADL

YYZADL

Toronto Pearson Intl

Mon 9/2

17:55-09:30

1 stop24h 05m

Adelaide

Mon 2/3

14:55-07:30

1 stop32h 05m

$2,051

MontrealAdelaide

YUL - ADL

YULADL

Montreal Pierre Elliott Trudeau Intl

Thu 4/12

13:25-10:55

2 stops30h 00m

Adelaide

Thu 15/1

06:00-23:22

3 stops32h 52m

$2,267

TorontoAdelaide

YYZ - ADL

YYZADL

Toronto Pearson Intl

Fri 5/12

18:45-16:20

2 stops30h 05m

Adelaide

Fri 12/12

19:55-16:09

2 stops35h 44m

$2,330

TorontoAdelaide

YYZ - ADL

YYZADL

Toronto Pearson Intl

Thu 15/1

17:55-09:30

1 stop24h 05m

Adelaide

Sat 24/1

14:55-16:52

1 stop41h 27m

$2,344

MontrealAdelaide

YUL - ADL

YULADL

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

18:20-18:10

2 stops56h 20m

Adelaide

Sun 7/12

06:00-21:00

2 stops30h 30m

$2,350

TorontoAdelaide

YYZ - ADL

YYZADL

Toronto Pearson Intl

Mon 9/2

22:15-12:15

3 stops46h 30m

Adelaide

Mon 2/3

11:30-17:41

3 stops45h 41m

$2,351

TorontoAdelaide

YYZ - ADL

YYZADL

Toronto Pearson Intl

Tue 3/2

14:10-10:55

2 stops29h 15m

Adelaide

Wed 26/8

11:55-05:40

2 stops31h 15m

$2,544

TorontoAdelaide

YYZ - ADL

YYZADL

Toronto Pearson Intl

Wed 28/1

16:55-15:45

3 stops31h 20m

Adelaide

Fri 20/2

07:45-22:28

3 stops30h 13m

$2,625

MontrealAdelaide

YUL - ADL

YULADL

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

20:50-20:40

2 stops32h 20m

Adelaide

Sun 7/12

22:00-14:05

1 stop31h 35m

$2,650

MontrealAdelaide

YUL - ADL

YULADL

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

10:35-13:45

3 stops35h 40m

Adelaide

Sun 7/12

20:55-17:00

3 stops35h 35m

$3,272

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 23 results
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Best time to book a flight from Ontario to Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide 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 Adelaide

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

Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Adelaide (average of $1,604). Flying from Region of Ontario to Adelaide in July is currently the most expensive (average of $2,802). 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 ADL?

Find hourly flight availability from Ontario to Adelaide. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 November 2025.

When flying from Region of Ontario to Adelaide, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 35% versus a flight in the evening.

How much does it cost for a return flight from Region of Ontario to Adelaide?

Related info for your journey

Find useful and relevant information for your journey from Ontario to Adelaide. 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 Adelaide from Ontario?

    Adelaide (ADL) is the airport you will fly into if you book a flight from Ontario to Adelaide. It is only a 6.6 km journey from Adelaide (ADL) to Adelaide’s city centre.

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

    Airlines like United Airlines and Air Canada fly from Region of Ontario to Adelaide in about 24h 05m. The time it takes to get you to your destination can typically vary by up to 5h 55m. Region of Ontario and Adelaide are separated by a distance of 16613 km. Both multi-stop and direct flights can be found to your destination and back.

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

    The most popular route from Region of Ontario to Adelaide is Montreal Pierre Elliott Trudeau Intl - Adelaide. You may also consider Toronto Pearson Intl - Adelaide or Ottawa - Adelaide.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Region of Ontario to Adelaide (average of $1,604). Flying from Region of Ontario to Adelaide in July is currently the most expensive (average of $2,802). 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 Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

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

Need flexible booking options for your flight to Adelaide from Ontario? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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