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Cheap flights from Ontario to Cairns from $807

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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — CNS
15 Jul — 22 Jul1
1 adult

Cheap flight deals from Ontario to Cairns

Keep the following information in mind while searching for Ontario to Cairns flight deals. Data was last updated 10 July 2025.

Round-trip from

$2,709

One-way from

$807
29/7-6/8
  • 29/7-6/8
  • 5 total stops
  • 70h 48m total
  • Ontario to Cairns
Search Deals
27/8
  • 27/8
  • 3 total stops
  • 58h 25m total
  • Ontario to Cairns
Search Deals

Find flight deals from Ontario to Cairns

Cheapest flights from Ontario to Cairns
Explore the most affordable flight options available from Ontario to Cairns. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 July 2025.

Tue 29/707:00YUL - CNS
2 stops31h 25mMultiple Airlines
Wed 6/805:45CNS - YUL
3 stops39h 23mMultiple Airlines
Deal found 9/7$2,709
Mon 28/718:30YUL - CNS
2 stops26h 40mUnited Airlines
Wed 6/806:00CNS - YUL
2 stops40h 16mUnited Airlines
Deal found 9/7$3,283
Mon 28/713:05YUL - CNS
2 stops34h 05mAir Canada
Sat 9/816:35CNS - YUL
2 stops42h 15mAir Canada
Deal found 9/7$3,314
Mon 21/706:30YYZ - CNS
2 stops31h 55mMultiple Airlines
Thu 31/709:20CNS - YYZ
2 stops50h 15mMultiple Airlines
Deal found 8/7$3,605
Tue 8/715:59YYZ - CNS
2 stops28h 46mAir New Zealand
Sat 26/711:55CNS - YYZ
2 stops27h 32mAir New Zealand
Deal found 8/7$4,653
Tue 8/715:30YYZ - CNS
2 stops41h 20mCathay Pacific
Sun 27/718:35CNS - YYZ
2 stops57h 15mCathay Pacific
Deal found 8/7$4,785
Mon 21/710:44YYZ - CNS
3 stops46h 06mQantas Airways
Thu 31/710:15CNS - YYZ
3 stops49h 15mQantas Airways
Deal found 8/7$5,154
Mon 28/707:00YUL - CNS
3 stops40h 00mQantas Airways
Sat 9/810:15CNS - YUL
3 stops52h 28mQantas Airways
Deal found 9/7$5,480
Tue 8/708:05YYZ - CNS
2 stops45h 40mUnited Airlines
Wed 23/706:00CNS - YYZ
3 stops30h 36mUnited Airlines
Deal found 8/7$5,518
Tue 8/722:50YYZ - CNS
2 stops51h 05mAir Canada
Mon 28/706:00CNS - YYZ
3 stops48h 28mAir Canada
Deal found 8/7$8,093

Cheapflights Fare Finder

Customise your flight search to find flights from Ontario to Cairns 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 10 July 2025.
Use the filters below to find and compare flights from Ontario to Cairns that are best for you.

Fly from

Ontario

Fly to

Cairns

Route

Depart

Return

Price

MontrealCairns

YUL - CNS

YULCNS

Montreal Pierre Elliott Trudeau Intl

Tue 29/7

07:00-04:25

2 stops31h 25m

Cairns

Wed 6/8

05:45-07:08

3 stops39h 23m

$2,709

MontrealCairns

YUL - CNS

YULCNS

Montreal Pierre Elliott Trudeau Intl

Mon 28/7

18:30-11:10

2 stops26h 40m

Cairns

Wed 6/8

06:00-08:16

2 stops40h 16m

$3,283

MontrealCairns

YUL - CNS

YULCNS

Montreal Pierre Elliott Trudeau Intl

Mon 28/7

13:05-13:10

2 stops34h 05m

Cairns

Sat 9/8

16:35-20:50

2 stops42h 15m

$3,314

TorontoCairns

YYZ - CNS

YYZCNS

Toronto Pearson Intl

Mon 21/7

06:30-04:25

2 stops31h 55m

Cairns

Thu 31/7

09:20-21:35

2 stops50h 15m

$3,605

TorontoCairns

YYZ - CNS

YYZCNS

Toronto Pearson Intl

Mon 21/7

10:44-22:50

3 stops46h 06m

Cairns

Thu 31/7

10:15-21:30

3 stops49h 15m

$5,154

MontrealCairns

YUL - CNS

YULCNS

Montreal Pierre Elliott Trudeau Intl

Mon 28/7

07:00-13:00

3 stops40h 00m

Cairns

Sat 9/8

10:15-00:43

3 stops52h 28m

$5,480

TorontoCairns

YYZ - CNS

YYZCNS

Toronto Pearson Intl

Wed 27/8

22:25-22:50

3 stops58h 25m

$807

Flights are sorted by cheapest return flights first.

Deals found on 9/7

Best time to book a flight from Ontario to Cairns

Have a flexible travel schedule? Discover the best time to fly to Cairns 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 Cairns
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Cairns

Get insights into the airlines that provide service to Cairns. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cairns. Reviews last updated 10 July 2025.
Check out reviews from past customers who have flown with Qantas Airways, United Airlines, andAir Canada from Ontario to Cairns to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
873 reviews
Check prices

Entertainment

7.2

Boarding

7.7

Comfort

7.4

Crew

8.2

Overall

7.5

Food

6.9

Reviews

1 / 20
4.0
Okay

Hendrik Bernardus,May 2025

SYD - PER

These economy class seats must be as cramped as they can possibly get? It's almost impossible for two adults to sit next to each other. The blonde Australian air hostess at the back was rude. Despite Qantas' bad service overall I've now had a few experiences where the attitude of the team on board just makes up for their flights always being late. This was not one of those flights. The ice cream is a nice touch!
Qantas Airways
7.5
Good
873 reviews
Qantas Airways
7.5
Good
873 reviews
Check prices

Entertainment

7.2

Boarding

7.7

Comfort

7.4

Crew

8.2

Overall

7.5

Food

6.9

Reviews

1 / 20
4.0
Okay

Hendrik Bernardus,May 2025

SYD - PER

These economy class seats must be as cramped as they can possibly get? It's almost impossible for two adults to sit next to each other. The blonde Australian air hostess at the back was rude. Despite Qantas' bad service overall I've now had a few experiences where the attitude of the team on board just makes up for their flights always being late. This was not one of those flights. The ice cream is a nice touch!
United Airlines
7.4
Good
8,846 reviews
Qantas Airways
7.5
Good
873 reviews
Check prices

Entertainment

7.2

Boarding

7.7

Comfort

7.4

Crew

8.2

Overall

7.5

Food

6.9

Reviews

1 / 20
4.0
Okay

Hendrik Bernardus,May 2025

SYD - PER

These economy class seats must be as cramped as they can possibly get? It's almost impossible for two adults to sit next to each other. The blonde Australian air hostess at the back was rude. Despite Qantas' bad service overall I've now had a few experiences where the attitude of the team on board just makes up for their flights always being late. This was not one of those flights. The ice cream is a nice touch!
Air Canada
7.1
Good
9,692 reviews
Qantas Airways
7.5
Good
873 reviews
Check prices

Entertainment

7.2

Boarding

7.7

Comfort

7.4

Crew

8.2

Overall

7.5

Food

6.9

Reviews

1 / 20
4.0
Okay

Hendrik Bernardus,May 2025

SYD - PER

These economy class seats must be as cramped as they can possibly get? It's almost impossible for two adults to sit next to each other. The blonde Australian air hostess at the back was rude. Despite Qantas' bad service overall I've now had a few experiences where the attitude of the team on board just makes up for their flights always being late. This was not one of those flights. The ice cream is a nice touch!

Related info for your journey

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

    Most people fly into Cairns (CNS) if they book a flight to Cairns from Ontario. Cairns is conveniently located just 4.4 km from Cairns’s city centre.

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

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

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

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

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

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

    Currently, March is the cheapest month in which you can book a flight from Region of Ontario to Cairns (average of $166). Flying from Region of Ontario to Cairns in October is currently the most expensive (average of $233). 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 Ontario?

Book flights to Ontario if you plan to visit one of these locations
Trinity Beach
Mission Beach

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