YUL - SYD

$724 Find Cheap Flights from Montreal to Sydney – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Pierre Elliott Trudeau Intl to Sydney departing on 12/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest return fare
$1,554
Typical prices: $1,793-$2,559
Delta
Wed 19/8Wed 26/8
YUL - SYD • 2 stops
Cheapest one-way flight
$724
Typical prices: $1,287-$2,134
Delta
Wed 12/8
YUL - SYD • 2 stops
Top airlines
Delta
Cheapest • from $1,554 (return)
Air Canada
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
Not available
There are currently no direct flights between Pierre Elliott Trudeau Intl and Sydney. You’ll need at least 1 connection.
Insights
Insights
Insights
Insights
Top stopover airports
Atlanta (ATL)
Cheapest • Avg $628 (return)
Atlanta (ATL)
Shortest trip • 8h 58m (one-way)
Insights
Insights
Insights
Insights
When to book
2 weeks
in advance
Our data shows that travellers who book at least 2 weeks in advance save around 14% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 27% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Sydney!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Montreal to Sydney (YUL-SYD)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Montreal to Sydney that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Pierre Elliott Trudeau Intl to Sydney

Wed, 19 Aug - Wed, 26 Aug
Delta Logo
07:00 - 06:50
YUL
-
SYD
33h 50m
2 stops
Delta Logo
09:15 - 23:40
SYD
-
YUL
28h 25m
2 stops
$1,554Delta
Tue, 11 Aug - Tue, 25 Aug
Delta Logo
07:00 - 06:50
YUL
-
SYD
33h 50m
2 stops
Delta Logo
09:15 - 23:40
SYD
-
YUL
28h 25m
2 stops
$1,555Delta
Mon, 10 Aug - Mon, 17 Aug
Delta Logo
07:00 - 06:50
YUL
-
SYD
33h 50m
2 stops
Delta Logo
09:15 - 23:40
SYD
-
YUL
28h 25m
2 stops
$1,557Delta
Sun, 9 Aug - Wed, 19 Aug
Delta Logo
18:51 - 06:50
YUL
-
SYD
45h 59m
2 stops
Delta Logo
09:15 - 23:40
SYD
-
YUL
28h 25m
2 stops
$1,557Delta
Mon, 10 Aug - Tue, 18 Aug
Delta Logo
18:51 - 06:50
YUL
-
SYD
45h 59m
2 stops
Delta Logo
09:15 - 23:30
SYD
-
YUL
28h 15m
2 stops
$1,557Delta
Tue, 11 Aug - Wed, 19 Aug
Delta Logo
12:44 - 06:50
YUL
-
SYD
28h 06m
2 stops
Delta Logo
09:15 - 23:40
SYD
-
YUL
28h 25m
2 stops
$1,557Delta
Wed, 12 Aug - Wed, 19 Aug
Delta Logo
06:00 - 06:50
YUL
-
SYD
34h 50m
2 stops
Delta Logo
09:15 - 23:52
SYD
-
YUL
28h 37m
2 stops
$1,557Delta
Wed, 12 Aug - Wed, 26 Aug
Delta Logo
07:00 - 06:50
YUL
-
SYD
33h 50m
2 stops
Delta Logo
09:15 - 23:30
SYD
-
YUL
28h 15m
2 stops
$1,557Delta
Wed, 2 Sep - Wed, 16 Sep
Air Canada Logo
17:00 - 07:20
YUL
-
SYD
24h 20m
1 stop
Air Canada Logo
09:20 - 15:59
SYD
-
YUL
20h 39m
1 stop
$2,220Air Canada
Wed, 2 Sep - Wed, 16 Sep
Air Canada Logo
17:00 - 07:20
YUL
-
SYD
24h 20m
1 stop
Air Canada Logo
09:20 - 20:35
SYD
-
YUL
25h 15m
2 stops
$2,220Air Canada
Booking Insights

KAYAK's insights & trends for Pierre Elliott Trudeau Intl to Sydney flights

Get data-powered insights and trends into flights from Pierre Elliott Trudeau Intl to Sydney to help you find the cheapest flights, the best time to fly and much more.

How much is a return flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney departing in August.

Flight prices are below average for this route right now.

Flights to Sydney from Montreal Pierre Elliott Trudeau Intl Airport usually cost between $1,793 and $2,559 in August.
The lowest price found in the past 5 days was $1,554 on Delta (19 Aug–26 Aug).

What is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to Sydney?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Sydney, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Montreal Pierre Elliott Trudeau Intl Airport to Sydney is May, where tickets cost $1,712 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is $2,671 and $2,593 respectively.

How far in advance should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Sydney, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney, you should book around 2 weeks before departure, which saves you about 14% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Find deals

Good to know

Low season

May

Cheapest flight

$724
Best time to beat the crowds (27% less expensive on average)
Most popular time to fly (11% more expensive on average)
Flight from Montreal to Sydney

When to book flights from Pierre Elliott Trudeau Intl to Sydney

Are your dates flexible? Find out the best times to travel from Pierre Elliott Trudeau Intl to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Montreal to Sydney flights

  • What is the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney?

    In the last 5 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney was $724 for a one-way ticket and $1,554 for a return.

  • Which airports will I be using when flying from Montreal to Sydney?

    Montreal and Sydney are both served by 1 main airport. You will leave Montreal from Montreal Pierre Elliott Trudeau Intl and will be arriving at Sydney Kingsford Smith.

  • Which aircraft models fly most regularly from Montreal to Sydney?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Montreal to Sydney?

    Star Alliance is the only airline alliance operating flights between Montreal and Sydney.

  • How does KAYAK find such low prices on flights from Montreal to Sydney?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Montreal to Sydney.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Montreal to Sydney?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Sydney from Montreal is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Montreal to Sydney?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Sydney with an airline and back to Montreal with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Montreal to Sydney?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Sydney from Montreal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Pierre Elliott Trudeau Intl to Sydney

 
See real verified KAYAK customer reviews for airlines flying from Montreal to Sydney. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Pierre Elliott Trudeau Intl to Sydney? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 11404 reviews
6.3Food
6.8Entertainment
7.1Comfort
7.8Crew
7.3Boarding
Airline reviews

Terrible! Our flight was cancelled. No other nonstop flights available. Had to rent a car and drive 7 hours!

2.0 MediocreAnonymous, July 2026
YUL - PHL
Read more Air Canada reviews

Terrible! Our flight was cancelled. No other nonstop flights available. Had to rent a car and drive 7 hours!

I really enjoyed the delicious food and the delicious breakfast; I also liked the seat—it was very comfortable—and the service was absolutely wonderful. The trip was smooth.

Not enough electronic outlets for charging in the Air Canada waiting to board area but the Most important thing….the plane was booked to only 40% capacity and my row of 2 other seats were empty. My row happened to be one of the few rows that did NOT have raising arm rests. The flight attendant made effort to seat me in a different row. I needed wheelchair assistance due to a cyst on my knee and struggled to move from seat to seat to get to the row. Those 2 empty seats tormented me the entire 15+ hour flight as I had to be upright the entire flight and was not able to elevate my knee. Lots of other passengers were laying down due to the arm rest being able to retract. It is a shame that he couldn’t be gracious and find a row that I could move to.

Terrible. My brother broke his leg and couldn’t board the flight and air Canada couldn’t do anything about rescheduling his flight. Poor customer service and help all around

I Teall staff was great and helpful and communicated needs and special care for my granddaughters and family as well as others. Well done

Terrible experience! All flights delayed, staff had no idea of what they were doing, and at the end luggage lost for 2 days!

Flight delayed 3 times and also delayed again and by the time I reached Sydney, I couldn't get my Virgin Air as my flight was delayed and I was asked to contact here and there and asked to go to this and that terminal and was told there's no other flight as flights are all full to Melbourne. Thank God, at the very last minute, I was put into Qantas and didn't arrive till 7.30 pm in Melbourne instead of 2 pm. Will never use Air Canada again. Besides, the sittings is so tight and can hardly stretch a bit and eat without elbowing my side passengers. It was indeed a very uncomfortable flight.

Crew helped to find more comfortable seats for passengers. We never got tea or coffee on this trip even when we asked. Not even with breakfast.

I could feel the knees of the person behind me in my lower back for 15 1/2 hours. The. Seats were small and space was tight. People were nice. Coffee in the morning was in a small cup and half full and they never came around again.

THEY LOST MY BAGS. I WILL NOT GET THEM BACK FOR 2 WEEKS. everything was delayed. boarding, take off, everything. it was horrible. i am now without luggage for 2 weeks and they have offered me 0 compensation or help. i will NEVER fly air canada again and i suggest you don’t either <3

Everything you need to know for your flight from Pierre Elliott Trudeau Intl to Sydney

Information on your arrival and departure airports

Montreal (YUL)
Sydney (SYD)