YUL - SYD

$718 Find Cheap Flights from Montreal to Sydney

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to Sydney departing on 3/9. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Sydney

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Sydney, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Sydney, as well as popular online travel agencies
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41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$1,350
Typical prices: $1,259-$1,725
Multiple Airlines
Sun 2/8Wed 3/18
YUL - SYD • 2 stops
Cheapest one-way
$718
Typical prices: $592-$1,010
Qatar Airways
Mon 3/9
YUL - SYD • 1 stop
Top airlines
Qantas Airways
Cheapest • from $1,390 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
8 weeks
in advance
Our data shows that travelers who book at least 8 weeks in advance save around 20% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 11% 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 100s 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 round-trip 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 round-trip flight deals from Montreal to Sydney

Sun, Feb 8 - Wed, Mar 18
Multiple Airlines Logo
6:45 am - 6:55 am
YUL
-
SYD
32h 10m
2 stops
Multiple Airlines Logo
8:30 pm - 7:05 am
SYD
-
YUL
25h 35m
2 stops
$1,350Multiple Airlines
Sat, Mar 28 - Sun, Apr 12
Multiple Airlines Logo
6:45 am - 6:35 am
YUL
-
SYD
32h 50m
2 stops
Multiple Airlines Logo
9:25 pm - 11:44 am
SYD
-
YUL
28h 19m
2 stops
$1,375Multiple Airlines
Mon, Feb 16 - Mon, Feb 23
Qatar Airways Logo
8:50 pm - 6:50 am
YUL
-
SYD
42h 00m
1 stop
Qatar Airways Logo
3:50 pm - 2:05 pm
SYD
-
YUL
38h 15m
1 stop
$1,390Qatar Airways
Sun, May 10 - Wed, May 27
Qantas Airways Logo
6:45 am - 6:35 am
YUL
-
SYD
57h 50m
2 stops
Qantas Airways Logo
8:30 pm - 12:42 am
SYD
-
YUL
66h 12m
2 stops
$1,391Qantas Airways
Mon, Apr 13 - Mon, Apr 27
Qatar Airways Logo
8:55 pm - 6:15 am
YUL
-
SYD
43h 20m
1 stop
Qatar Airways Logo
2:50 pm - 2:45 pm
SYD
-
YUL
37h 55m
1 stop
$1,414Qatar Airways
Mon, Apr 13 - Mon, Apr 27
Qatar Airways Logo
8:55 pm - 6:15 am
YUL
-
SYD
43h 20m
1 stop
Qatar Airways Logo
2:50 pm - 2:45 pm
SYD
-
YUL
37h 55m
1 stop
$1,415Qatar Airways
Sun, May 3 - Sat, May 23
Qantas Airways Logo
6:45 am - 6:35 am
YUL
-
SYD
57h 50m
2 stops
Qantas Airways Logo
8:30 pm - 12:42 am
SYD
-
YUL
66h 12m
2 stops
$1,416Qantas Airways
Sat, May 9 - Wed, May 27
Qantas Airways Logo
6:45 am - 7:30 am
YUL
-
SYD
58h 45m
2 stops
Qantas Airways Logo
8:30 pm - 12:42 am
SYD
-
YUL
66h 12m
2 stops
$1,418Qantas Airways
Sat, May 9 - Mon, May 18
Qantas Airways Logo
6:45 am - 7:30 am
YUL
-
SYD
58h 45m
2 stops
Qantas Airways Logo
8:30 pm - 12:42 am
SYD
-
YUL
42h 12m
2 stops
$1,419Qantas Airways
Sat, May 9 - Mon, Jun 1
Qantas Airways Logo
6:45 am - 7:30 am
YUL
-
SYD
58h 45m
2 stops
Qantas Airways Logo
8:30 pm - 12:42 am
SYD
-
YUL
42h 12m
2 stops
$1,420Qantas Airways
Booking Insights

KAYAK's insights & trends for Montreal to Sydney flights

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

How much is a round-trip flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney?

This analysis is based on the cheapest round-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 February.

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 $1,458 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,907 and $1,884 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 8 weeks before departure, which saves you about 20% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 22 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$718
Best time to beat the crowds with an average 3% drop in price.
Most popular time to fly with an average 16% increase in price.
Flight from Montreal to Sydney

When to book flights from Montreal to Sydney

Are your dates flexible? Find out the best times to travel from Montreal to Sydney based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 3 days, the lowest price for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney was $718 for a one-way ticket and $1,350 for a round-trip.

  • Do I need a passport to fly between Montreal and Sydney?

    A passport is required to fly from Montreal to Sydney.

  • 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.

  • Which is the best airline for flights from Montreal to Sydney, United Airlines or Air Canada?

    The two airlines most popular with KAYAK users for flights from Montreal to Sydney are United Airlines and Air Canada. With an average price for the route of $1,569 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $1,642 and an overall rating of 7.1.

  • 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 travelers 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 round-trip ticket. You could then fly to Sydney with an airline and back to Montreal with another airline. Booking your flights between Montreal and SYD can sometimes prove cheaper using this method.

  • 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 airlines flying from Montreal 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 Montreal 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.
7.4
United AirlinesOverall score based on 9175 reviews
8.1Crew
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
Airline reviews

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

4.0 OkayKhalid, Jan 2026
SFO - SYD
Read more United Airlines reviews

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

l really enjoy very much the flight was very pleasant

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

I dread trans-Pacific flights. They are very long. This was my first time on Universal, and it was my best crossing ever. The staff were professional, the hospitality was great, and the food was delicious. The entertainment system filled the long flight hours. I will seek out Universal flights from now onwards. 🙂

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

Air Canada’s problems are not staff related by and large, no. The problem is tiny jets between the U.S. and Canada - yes, believe it or not they are still “international” (just ask our own Mango Maniac in power in the U.S.). The little aisle is compounded by a design flaw of a “dog leg” starting at seat 12. Woe be unto you if you sit here as passengers and attendants do not have sufficient room to not hit you in the face with backpacks. One thing I will say very positively about Air Canada is you still provide pillows and blankets on transcontinental flights to all, not just the elites. Your tiny improperly designed jets are also a problem flying city to city within Canada also. One can only say you remind us of a “Jet Blue” or “Spirit” experience. Also your luggage space is downright Byzantine! We will endeavor to avoid you and use other U.S. carriers, albeit charging more.

Terrible canceled flight and lost my luggage. Flew me to Halifax. Tgat flight was delayed, had to spend night in airport chair.

The airplane has been replaced and late night layover have been extended from 3 to 7 and the only compensation was a $15 food voucher after most restaurants have been closed, not helping with children after a 18+ hour international flight

My seat was not comfortable. Flight was smooth. Regretfully we had two delays before takeoff

They are very proactive and made our boarding easy and always notified us about any changes well in advance.

This flight with a lot empty place , and I have more room, feeling comfortable.

Flight was good, breakfast could be much better. We had come from a domestic flight on the same aircraft and the domestic flight was much better regarding service compared to this international flight.

I accidentally touched a cabin steward as she passed by and she reacted harshly yelling in a loud voice “don’t touch me”. It was embarrassing and uncalled for. I would characterize a few of the cabin crew as pretentious and aloof. Not at all what is expected. That was the first leg of our trip from Montreal to Munich. The second leg from Munich to Nice was more in keeping with the service I expected.

The staff could not have been any friendlier. Lots of usb ports on our aircraft.

It was crazy, boarded over a hour late from scheduled departure. Then when arrived in BNA issued with getting off the plane…over 1/2 hour. Not looking forward to flying Air Canada, ever again.

Everything you need to know for your flight from Montreal to Sydney

Information on your arrival and departure airports