YUL - SYD

$641 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 11/30. 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

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
$1,433
Typical prices: $1,340-1721
Qatar Airways
Tue 2/24Tue 3/17
YUL - SYD • 1 stop
Cheapest one-way
$641
Typical prices: $1,014-1149
Multiple Airlines
Sun 11/30
YUL - SYD • 3 stops
Top airlines
Qatar Airways
Cheapest • from $1,433 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
5 weeks
in advance
Our data shows that travelers who book at least 5 weeks in advance save around 18% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
May
Cheapest • 11% price drop
October
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Tue, Feb 24 - Tue, Mar 17
Qatar Airways Logo
8:50 pm - 6:50 amYUL-SYD
42h 00m1 stop
Qatar Airways Logo
3:50 pm - 3:05 pmSYD-YUL
38h 15m1 stop
$1,433Qatar Airways
Find Deal
Sun, Mar 8 - Mon, Mar 30
Qatar Airways Logo
9:50 pm - 6:50 amYUL-SYD
42h 00m1 stop
Qatar Airways Logo
3:50 pm - 2:45 pmSYD-YUL
37h 55m1 stop
$1,477Qatar Airways
Find Deal
Sun, Mar 8 - Tue, Mar 31
Qatar Airways Logo
9:50 pm - 6:50 amYUL-SYD
42h 00m1 stop
Qatar Airways Logo
3:50 pm - 2:45 pmSYD-YUL
37h 55m1 stop
$1,494Qatar Airways
Find Deal
Fri, Mar 6 - Sat, Mar 28
Qatar Airways Logo
8:50 pm - 6:50 amYUL-SYD
42h 00m1 stop
Qatar Airways Logo
3:50 pm - 2:45 pmSYD-YUL
37h 55m1 stop
$1,512Qatar Airways
Find Deal
Fri, Mar 6 - Sat, Mar 28
Qatar Airways Logo
8:50 pm - 6:50 amYUL-SYD
42h 00m1 stop
Qatar Airways Logo
3:50 pm - 2:45 pmSYD-YUL
37h 55m1 stop
$1,513Qatar Airways
Find Deal
Tue, Oct 28 - Tue, Nov 25
United Airlines Logo
9:15 am - 9:15 amYUL-SYD
33h 00m2 stops
United Airlines Logo
12:10 pm - 7:48 pmSYD-YUL
23h 38m2 stops
$1,554United Airlines
Find Deal
Mon, Jan 19 - Sun, Feb 15
United Airlines Logo
6:00 am - 6:20 amYUL-SYD
32h 20m2 stops
United Airlines Logo
2:00 pm - 9:01 pmSYD-YUL
23h 01m2 stops
$1,555United Airlines
Find Deal
Fri, Nov 21 - Tue, Dec 9
Air New Zealand Logo
6:20 pm - 10:30 amYUL-SYD
48h 10m2 stops
Air New Zealand Logo
9:55 am - 6:44 amSYD-YUL
36h 49m2 stops
$1,593Air New Zealand
Find Deal
Wed, Nov 19 - Mon, Dec 8
Multiple Airlines Logo
6:45 am - 6:35 amYUL-SYD
31h 50m2 stops
Multiple Airlines Logo
2:05 pm - 10:40 pmSYD-YUL
24h 35m2 stops
$1,606Multiple Airlines
Find Deal
Wed, Dec 3 - Thu, Jan 15
Multiple Airlines Logo
6:45 am - 6:55 amYUL-SYD
32h 10m3 stops
Multiple Airlines Logo
8:30 pm - 7:05 amSYD-YUL
26h 35m2 stops
$1,642Multiple Airlines
Find Deal
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’s the cheapest day of the week to fly from Montreal to Sydney?

The average price of all round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Sydney clicked on KAYAK for each day over the last 12 months.

When flying from Montreal to Sydney, you should consider leaving on a Wednesday and avoid Fridays if you are looking for the best rates. For your return to Montreal, you’ll find the best rates on Wednesdays and the most expensive ones on Thursdays.

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 $1,467 (return) on average. On the other hand, the most expensive months are December and January, where the average cost of round-trip tickets is $1,992 and $1,903 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 5 weeks before departure, which saves you about 18% 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$641
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 1% 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 $641 for a one-way ticket and $1,433 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 $1,552 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 $1,706 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 8957 reviews
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

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

10.0 ExcellentPaulos, Aug 2025YUL - IAD
Read more United Airlines reviews

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.

The experience was great, the crew was very polite and hospitable. I will definitely make if my go to airlines.

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

Efficient, calm when things were delayed and kept us regularly informed of what was happening.

Airbus plane, nice and polite staff, entertainment even as it was a short flight.

Very nice and clean plane. Transit time between flights was tight though

Our flights got changed from United to Air Canada and our purchased seats did not get transferred so we had to pay for seats twice. I brought it up with Air Canada and they stated I had to go back and chase it with United. The united seats were $21 Canadian each and Air Canada were $56 each so we have paid $77 for each seat. Very unhappy

So far so good but food and entertainment are not available for this flight

Plane temperature was comfortable (not to hot) when boarding and waiting for takeoff.

The service to/from the airport/plane (wheelchair assistance for my mother in law) was exceptional. The staff was super friendly and courteous. The staff on the plane was also very nice. The food quality could have been better (mashed chicken sandwich).

The flight was great. I like it when airline capitalism give you information. For someone with flight jitters it really helps. And this captain was very cheery and reassuring. I had trouble understanding the head flight attendant because she spoke very fast. But overall staff were very helpful and kind.

1 hour late No hot drinks No restroom in the back of the plane

I did the posting for 45 years. I just retired. I’m the only seat in the plane but didn’t have any phone. It has to be mine so imagine seeing 13 hours on the flat seat with a belt that didn’t close all the rest was OK.

I had wonderful wheelchair assistance through the Montreal airport onto the flight. Air Canada was excellent in this both at the Fredericton airport and the Montreal one where an attendant helped us through customs as well as transport and baggage security.

Flight was cancelled last minute due to Air Canada strike leaving us stranded and having to stressfully find a way home that cost hundreds of dollars in excess cost added to the trip. Having just experienced our mother's funeral service, this was not a good way to end our trip.

They went on strike before time and screwed us big time. Which is not fair. We respect their planned strike but why they went on strike ahead of time ??? Poor garbage management

Premium Economy is best if you can't get upgraded to Business.. Not as good to sleep for red-eye flights, but does the job. More space for your legs and arms.. The food is also better and the service is almost like business.

Awful. As we were boarding we were told the flight was cancelled. Then had to stand in a queue for 3 hours to talk to someone at the kiosk of Air Canada. They were not helpful at all. No empathy. My issue is not with them striking but the total disregard for the chaos and distress late notice caused. No thought on the impact this has caused.

Horrible, experience, 5 hours delay, they changed gates 3 times, the last one we had to wait for 1::30 hre for the door to open to get to that gate. 0 apologies from Air Canada, they don’t care at all about their passengers

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

Information on your arrival and departure airports

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