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Cheap flights from Montreal to Sydney from C$ 812

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal to Sydney departing on 18/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Montreal to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:00 a.m. - 6:50 a.m.
YUL
-
SYD
32h 50m2 stops
Delta Logo
1:15 p.m. - 11:13 p.m.
SYD
-
YUL
24h 58m2 stops
C$ 1,326Delta
Sun, 1 Mar - Tue, 24 Mar
Delta Logo
1:02 p.m. - 8:30 a.m.
YUL
-
SYD
27h 28m2 stops
Delta Logo
2:15 p.m. - 11:59 a.m.
SYD
-
YUL
37h 44m2 stops
C$ 1,370Delta
Tue, 27 Jan - Sat, 28 Feb
Delta Logo
12:52 p.m. - 6:50 a.m.
YUL
-
SYD
25h 58m2 stops
Delta Logo
1:15 p.m. - 11:13 p.m.
SYD
-
YUL
24h 58m2 stops
C$ 1,376Delta
Thu, 5 Mar - Tue, 24 Mar
Delta Logo
12:52 p.m. - 6:50 a.m.
YUL
-
SYD
25h 58m2 stops
Delta Logo
9:40 a.m. - 11:59 a.m.
SYD
-
YUL
41h 19m2 stops
C$ 1,425Delta
Thu, 5 Mar - Fri, 27 Mar
Delta Logo
6:02 p.m. - 6:50 a.m.
YUL
-
SYD
68h 48m2 stops
Delta Logo
10:40 a.m. - 11:10 p.m.
SYD
-
YUL
28h 30m2 stops
C$ 1,601Delta
Fri, 6 Feb - Sun, 15 Feb
Multiple Airlines Logo
8:55 a.m. - 9:35 a.m.
YUL
-
SYD
32h 40m3 stops
Multiple Airlines Logo
11:20 a.m. - 1:53 a.m.
SYD
-
YUL
30h 33m3 stops
C$ 1,637Multiple Airlines
Mon, 16 Feb - Tue, 3 Mar
Multiple Airlines Logo
8:55 a.m. - 9:35 a.m.
YUL
-
SYD
32h 40m3 stops
Multiple Airlines Logo
11:20 a.m. - 9:42 p.m.
SYD
-
YUL
26h 22m2 stops
C$ 1,689Multiple Airlines
Mon, 16 Feb - Tue, 3 Mar
Qatar Airways Logo
8:50 p.m. - 6:50 a.m.
YUL
-
SYD
42h 00m1 stop
Qatar Airways Logo
9:40 p.m. - 2:05 p.m.
SYD
-
YUL
32h 25m1 stop
C$ 1,716Qatar Airways
Mon, 16 Feb - Tue, 3 Mar
Qatar Airways Logo
9:50 p.m. - 6:50 a.m.
YUL
-
SYD
42h 00m1 stop
Qatar Airways Logo
2:50 p.m. - 2:45 p.m.
SYD
-
YUL
37h 55m1 stop
C$ 1,738Qatar Airways
Wed, 18 Mar - Tue, 21 Apr
Qatar Airways Logo
8:50 p.m. - 6:50 a.m.
YUL
-
SYD
42h 00m1 stop
Qatar Airways Logo
3:50 p.m. - 3:05 p.m.
SYD
-
YUL
38h 15m1 stop
C$ 1,742Qatar Airways
Sun, 1 Mar - Mon, 16 Mar

Delta flights from Montreal to Sydney

Our best Delta deals on Montreal to Sydney flight tickets
Delta
1 Mar
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
32h 50m
2 stops
SYD6:50 a.m.Sydney Kingsford Smith
24 Mar
SYD1:15 p.m.Sydney Kingsford Smith
24h 58m
2 stops
YUL11:13 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,326
Find similar
Delta
27 Jan
YUL1:02 p.m.Montreal Pierre Elliott Trudeau Intl
27h 28m
2 stops
SYD8:30 a.m.Sydney Kingsford Smith
28 Feb
SYD2:15 p.m.Sydney Kingsford Smith
37h 44m
2 stops
YUL11:59 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,370
Find similar
Delta
5 Mar
YUL12:52 p.m.Montreal Pierre Elliott Trudeau Intl
25h 58m
2 stops
SYD6:50 a.m.Sydney Kingsford Smith
24 Mar
SYD1:15 p.m.Sydney Kingsford Smith
24h 58m
2 stops
YUL11:13 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,376
Find similar

Qatar Airways flights from Montreal to Sydney

Our best Qatar Airways deals on Montreal to Sydney flight tickets
Qatar Airways
16 Feb
YUL8:50 p.m.Montreal Pierre Elliott Trudeau Intl
42h 00m
1 stop
SYD6:50 a.m.Sydney Kingsford Smith
3 Mar
SYD9:40 p.m.Sydney Kingsford Smith
32h 25m
1 stop
YUL2:05 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,716
Find similar
Qatar Airways
18 Mar
YUL9:50 p.m.Montreal Pierre Elliott Trudeau Intl
42h 00m
1 stop
SYD6:50 a.m.Sydney Kingsford Smith
21 Apr
SYD2:50 p.m.Sydney Kingsford Smith
37h 55m
1 stop
YUL2:45 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,738
Find similar
Qatar Airways
1 Mar
YUL8:50 p.m.Montreal Pierre Elliott Trudeau Intl
42h 00m
1 stop
SYD6:50 a.m.Sydney Kingsford Smith
16 Mar
SYD3:50 p.m.Sydney Kingsford Smith
38h 15m
1 stop
YUL3:05 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 1,742
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Montreal to Sydney 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, momondo users made 96,600 searches. Data last updated 26 December 2025.
Use the filters below to find and compare flights from Montreal to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 1/3

6:00 a.m.-6:50 a.m.

2 stops32h 50m

Sydney Kingsford Smith

Tue 24/3

1:15 p.m.-11:13 p.m.

2 stops24h 58m

C$ 1,326

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Tue 27/1

1:02 p.m.-8:30 a.m.

2 stops27h 28m

Sydney Kingsford Smith

Sat 28/2

2:15 p.m.-11:59 a.m.

2 stops37h 44m

C$ 1,370

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Thu 5/3

12:52 p.m.-6:50 a.m.

2 stops25h 58m

Sydney Kingsford Smith

Tue 24/3

1:15 p.m.-11:13 p.m.

2 stops24h 58m

C$ 1,376

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Thu 5/3

12:52 p.m.-6:50 a.m.

2 stops25h 58m

Sydney Kingsford Smith

Fri 27/3

9:40 a.m.-11:59 a.m.

2 stops41h 19m

C$ 1,425

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Fri 6/2

6:02 p.m.-6:50 a.m.

2 stops68h 48m

Sydney Kingsford Smith

Sun 15/2

10:40 a.m.-11:10 p.m.

2 stops28h 30m

C$ 1,601

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 16/2

8:55 a.m.-9:35 a.m.

3 stops32h 40m

Sydney Kingsford Smith

Tue 3/3

11:20 a.m.-1:53 a.m.

3 stops30h 33m

C$ 1,637

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 16/2

8:55 a.m.-9:35 a.m.

3 stops32h 40m

Sydney Kingsford Smith

Tue 3/3

11:20 a.m.-9:42 p.m.

2 stops26h 22m

C$ 1,689

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 16/2

8:50 p.m.-6:50 a.m.

1 stop42h 00m

Sydney Kingsford Smith

Tue 3/3

9:40 p.m.-2:05 p.m.

1 stop32h 25m

C$ 1,716

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Wed 18/3

9:50 p.m.-6:50 a.m.

1 stop42h 00m

Sydney Kingsford Smith

Tue 21/4

2:50 p.m.-2:45 p.m.

1 stop37h 55m

C$ 1,738

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 1/3

8:50 p.m.-6:50 a.m.

1 stop42h 00m

Sydney Kingsford Smith

Mon 16/3

3:50 p.m.-3:05 p.m.

1 stop38h 15m

C$ 1,742

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Sydney from

How to get the cheapest flight ticket from Montreal to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Montreal and Sydney?

What is the cheapest month to fly to Sydney?

If you aren’t able to travel to Sydney during the month of September, then flying in April is also cheap. Prices for this month can be found on momondo for an average of C$ 2,021.

What is the cheapest day to depart on your flight to Sydney?

The cheapest day to depart from Montreal to Sydney is on a Sunday when prices can be found for as low as C$ 2,161. The most expensive day to fly to Sydney is Friday, with ticket prices averaging around C$ 2,300.

What is the cheapest time of day to depart on your flight to Sydney?

The cheapest time of day to fly to Sydney is in the evening when flights can be purchased for as low as C$ 1,983. In contrast, the most expensive time of day to depart to Sydney is in the afternoon when prices are around C$ 2,264.

How far in advance should I book a flight to Sydney?

You are more likely to see cheaper flights to Sydney from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to Sydney for around C$ 2,239 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sydney from Montreal for as low as C$ 1,544 on momondo.

Can stopping save me money on Montreal to Sydney flights?

You could potentially save up to 24% on your flight if you consider stops on a Montreal to Sydney flight.

How have Montreal to Sydney flight prices changed over time?

As of December 2025, prices for Montreal to Sydney flights are approximately 4% cheaper when compared to flights at the same time last year.

When to book flights from Montreal to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Montreal to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Montreal to Sydney (YMQ to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to Sydney

Fastest flight time

25h 35m

Direct flights

None
The fastest flight from Montreal to Sydney takes 25h 35m
There are no direct flights from Montreal to Sydney. There are no popular flight routes from Montreal to Sydney.
Search flight deals

  • How far is Montreal to Sydney Kingsford Smith by plane?

    A flight from Montreal to Sydney Kingsford Smith will travel around 16019.1 km. By plane, this route typically takes 25h 35m.

  • When did momondo last update prices for flights from Montreal to Sydney Kingsford Smith Airport?

    Prices for flights from Montreal to Sydney Kingsford Smith Airport are updated daily.

  • How many operators does momondo search for flights from Montreal to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Montreal to Sydney Kingsford Smith Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The travel and health documents you'll need for your trip to Sydney Kingsford Smith Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Sydney Kingsford Smith Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Montreal to Sydney?

Best airlines flying from Montreal to Sydney

Compare and see reviews for airlines that fly from Montreal to Sydney with momondo
Airline
Rating
Free Cancellation
Price
Porter AirlinesPriceFrom C$ 293Free CancellationRating
8.0
401 reviews
Search Porter Airlines flights
WestJetPriceFrom C$ 326Free CancellationRating
7.2
3,219 reviews
Search WestJet flights
DeltaPriceFrom C$ 446Free CancellationRating
7.9
8,018 reviews
Search Delta flights
Qantas AirwaysPriceFrom C$ 1,094Free CancellationRating
7.5
955 reviews
Search Qantas Airways flights
United AirlinesPriceFrom C$ 1,533Free CancellationRating
7.4
9,116 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 1,665Free CancellationRating
7.1
10,562 reviews
Search Air Canada flights
Air New ZealandPriceFrom C$ 1,713Free CancellationRating
8.0
560 reviews
Search Air New Zealand flights
Qatar AirwaysPriceFrom C$ 2,056Free CancellationRating
7.4
3,692 reviews
Search Qatar Airways flights

Travelling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Wollongong
Parramatta
Penrith
Bondi Beach

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to Sydney?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montreal to Sydney . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Montreal to Sydney with flexible booking policies on momondo?

All flight searches from Montreal to Sydney on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Montreal to Sydney?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Sydney from Montreal.

I’m not ready to book a flight from Montreal to Sydney right now. Can momondo alert me if prices change?

Price alerts on flights to Sydney from Montreal are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Fly your favourite airline to Sydney

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Air Canada
United Airlines
Air New Zealand
Delta
Porter Airlines
WestJet
Qatar Airways
Qantas Airways