YUL - SYD

$671 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 6/25. 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.
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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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Flights Deals

Cheap Flight Deals 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.

Recent round-trip flight deals from Montreal to Sydney

KAYAK's recommended round-trip deals from the most popular airlines that fly from Montreal to Sydney.
Discover the best prices for you by selecting your travel dates on KAYAK.
 Logo
7:00 am - 3:40 pmYUL-SYD
41h 40m3 stops
 Logo
5:25 pm - 4:40 pmSYD-YUL
38h 15m2 stops
$1,385
Find Deal
Thu, Oct 16 - Sun, Oct 26
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7:00 am - 3:40 pmYUL-SYD
41h 40m3 stops
 Logo
5:25 pm - 3:36 pmSYD-YUL
37h 11m3 stops
$1,393
Find Deal
Thu, Oct 16 - Sun, Oct 26
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7:00 am - 3:40 pmYUL-SYD
41h 40m2 stops
 Logo
5:25 pm - 4:40 pmSYD-YUL
38h 15m2 stops
$1,422
Find Deal
Thu, Oct 16 - Sun, Oct 26
Qatar Airways Logo
9:35 pm - 5:10 pmYUL-SYD
29h 35m1 stop
Qatar Airways Logo
9:45 pm - 2:45 pmSYD-YUL
32h 00m1 stop
$1,501Qatar Airways
Find Deal
Sun, Sep 7 - Tue, Oct 21
Air New Zealand Logo
6:00 pm - 8:45 amYUL-SYD
47h 45m2 stops
Air New Zealand Logo
9:55 am - 8:45 pmSYD-YUL
25h 50m2 stops
$1,537Air New Zealand
Find Deal
Thu, Oct 16 - Sun, Oct 26
Austrian Airlines Logo
6:35 pm - 10:20 amYUL-SYD
49h 45m2 stops
Austrian Airlines Logo
3:50 pm - 1:50 pmSYD-YUL
37h 00m2 stops
$1,547Austrian Airlines
Find Deal
Mon, Sep 8 - Tue, Oct 21
United Airlines Logo
9:45 am - 6:55 amYUL-SYD
31h 10m2 stops
United Airlines Logo
11:20 am - 6:58 pmSYD-YUL
22h 38m2 stops
$1,559United Airlines
Find Deal
Sun, Sep 7 - Tue, Oct 21
Qatar Airways Logo
9:35 pm - 5:10 pmYUL-SYD
29h 35m1 stop
Qatar Airways Logo
9:45 pm - 2:45 pmSYD-YUL
32h 00m1 stop
$1,560Qatar Airways
Find Deal
Sun, Sep 7 - Sat, Oct 18
United Airlines Logo
6:15 am - 7:00 amYUL-SYD
34h 45m2 stops
United Airlines Logo
10:20 am - 8:16 amSYD-YUL
35h 56m1 stop
$1,561United Airlines
Find Deal
Sun, Jun 1 - Sun, Jun 29
Air Canada Logo
6:00 pm - 8:20 amYUL-SYD
23h 20m1 stop
Air Canada Logo
10:20 am - 5:03 pmSYD-YUL
21h 43m1 stop
$1,774Air Canada
Find Deal
Thu, Oct 16 - Sun, Oct 26
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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.

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 September, where tickets cost $1,427 (return) on average. On the other hand, the most expensive months are January and December, where the average cost of round-trip tickets is $1,960 and $1,948 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 7 weeks before departure. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Good to know

Low seasonJune
High seasonDecember
Cheapest flight$671
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 20% 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 $671 for a one-way ticket and $1,385 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?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Montreal and Sydney, with Star Alliance being the most commonly used for this route.

  • 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 $1,536 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 $1,656 and an overall rating of 7.0.

  • 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.

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 8696 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

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

2.0 MediocreBrant, Apr 2025YHZ - EWR
Read more United Airlines reviews

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.

Michael, our FA was very attentive, even finding me a chocolate brownie from economy class when the dessert selections were all dairy based. ( intolerant, not allergic so don’t usually need to order dairy free)

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

It was my first time with United Airlines and I would say it was very good experience and best of all the flights were on time. Will definitely fly with United Airlines next time.

headphone jack didnt work for the first flight and not much variety

Plane 3 hours late. Missed connection. No help from gate staff. App horrible. Lost connection repeatedly. No service desk. Finally got help from young girl driving cart.

Not as good as expected Air Can needs to improve totally rated on internet as worst

Smooth flight. As always dinner could have been more generous. Breakfast was great.

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.

Crew was pleasant and efficient. The speaker system for instructions was hard to understand

My experience was poor with customer Services. Please consider flexibility with cancellation due to emergency health condition. Thank you.

Terrible. Flight was delayed for hours and we ended up arriving at our home at 4am after 20+ hours flying.

Disappointed my flight was delayed to TO as i had a connection to make. Ran through the airport I made my flight but I initially had 1.5 hours to connect. Unnecessary stress!

From my experience, I see there is room for a greater mixture of cultures, for example, a mix of the nationality of cabin crews, food, music, food, etc.

Flight was cancelled around 45 -1hr minutes before scheduled take off time due to mechanical issues we hadn’t even boarded yet. Had to reroute to Orlando so someone had to drive 2 1/2 to come and get me… the alternative was go through Toronto and get a later flight which didn’t work for my schedule. The flight attendants barely gave anyone a smile…not the same as flying when a client/passenger was important. Very disappointed. By the way I have never ever made a complaint online about any company with feedback…even when I probably should have. The only good experience was the boarding desk associates who were very professional and got me on another flight with my checked bags…very nice team.

Actually as my experience with air Canada from Canada to Newark it was crazy for me because it was a lot of delays which for me it shouldn’t be like that, but I was able to coup with it so that was my experience I hope next time they will do good on that thanks.

Delayed delayed delayed cancelled and all we got was $60 food or beverage Embarrassing I'd say

It was fine. There were a couple of mechanical delays prior to takeoff but it was overall a quick and pleasant flight.

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

Information on your arrival and departure airports

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