Find flights
When to book
Airlines
FAQs

Cheap flights from Montreal to Sydney from C$ 748

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/2. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — SYD
26 Feb — 5 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Montreal to Sydney

Enter your travel dates to find the best prices.

Cheapest flights from Montreal to Sydney
Explore the most affordable flight options available from Montreal to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 January 2026.

Mon 13/46:45 a.m.
YUL
-
SYD
3 stops39h 00m
Multiple Airlines
Mon 27/41:15 p.m.
SYD
-
YUL
3 stops31h 45m
Multiple Airlines
Deal found 25/1C$ 1,776
Thu 12/29:00 a.m.
YUL
-
SYD
2 stops35h 35m
Multiple Airlines
Thu 26/22:00 p.m.
SYD
-
YUL
3 stops33h 10m
Multiple Airlines
Deal found 27/1C$ 1,796
Mon 9/36:20 p.m.
YUL
-
SYD
1 stop23h 15m
Air Canada
Wed 18/310:20 a.m.
SYD
-
YUL
2 stops40h 49m
Air Canada
Deal found 27/1C$ 1,801
Mon 3/88:40 a.m.
YUL
-
SYD
2 stops32h 40m
Air Canada
Mon 24/89:20 a.m.
SYD
-
YUL
2 stops25h 11m
Air Canada
Deal found 27/1C$ 1,810
Mon 21/96:00 p.m.
YUL
-
SYD
1 stop23h 20m
Air Canada
Wed 18/1111:20 a.m.
SYD
-
YUL
2 stops27h 59m
Air Canada
Deal found 27/1C$ 1,812
Wed 12/84:30 p.m.
YUL
-
SYD
2 stops24h 50m
Air Canada
Wed 26/89:20 a.m.
SYD
-
YUL
1 stop24h 04m
Air Canada
Deal found 27/1C$ 1,813
Sat 2/58:40 p.m.
YUL
-
SYD
2 stops44h 40m
Air Canada
Mon 18/59:20 a.m.
SYD
-
YUL
2 stops24h 27m
Air Canada
Deal found 27/1C$ 1,814
Wed 29/48:00 a.m.
YUL
-
SYD
2 stops33h 20m
Air Canada
Wed 20/59:20 a.m.
SYD
-
YUL
2 stops38h 34m
Air Canada
Deal found 27/1C$ 1,825
Wed 15/43:35 p.m.
YUL
-
SYD
2 stops25h 45m
Air Canada
Wed 13/57:00 a.m.
SYD
-
YUL
2 stops23h 58m
Air Canada
Deal found 27/1C$ 1,835

Find flight deals from Montreal to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to Sydney (SYD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 January 2026.

Round-trip from

C$ 1,602

One-way from

C$ 748

Popular in

December

Cheapest in

September

Average price

C$ 2,481
10/2-17/2
  • 10/2-17/2
  • 5 total stops
  • 63h 09m total
  • Montreal to Sydney
Search Deals
18/2
  • 18/2
  • 3 total stops
  • 37h 50m total
  • Montreal to Sydney
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 283 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights 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, Cheapflights users made 629,999 searches. Data last updated 27 January 2026.
Use the filters below to find and compare flights from Montreal to Sydney that are best for you.

Fly from

Montreal

Fly to

Sydney

Route

Depart

Return

Price

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 8/2

6:45 a.m.-6:55 a.m.

3 stops32h 10m

Sydney Kingsford Smith

Wed 18/3

8:30 p.m.-7:05 a.m.

2 stops25h 35m

C$ 1,877

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 27/4

6:45 a.m.-6:35 a.m.

3 stops33h 50m

Sydney Kingsford Smith

Thu 30/4

9:10 a.m.-11:45 p.m.

2 stops28h 35m

C$ 1,931

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Tue 24/2

6:45 a.m.-6:55 a.m.

3 stops32h 10m

Sydney Kingsford Smith

Tue 17/3

1:05 p.m.-12:38 a.m.

3 stops26h 33m

C$ 1,964

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 13/4

8:55 p.m.-6:15 a.m.

1 stop43h 20m

Sydney Kingsford Smith

Mon 27/4

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

1 stop37h 55m

C$ 1,968

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Fri 27/2

3:45 p.m.-9:00 a.m.

2 stops49h 15m

Sydney Kingsford Smith

Mon 9/3

8:30 p.m.-7:05 a.m.

2 stops49h 35m

C$ 2,022

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Tue 14/4

8:55 p.m.-5:10 p.m.

1 stop30h 15m

Sydney Kingsford Smith

Thu 7/5

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

1 stop37h 55m

C$ 2,024

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 2/3

7:10 p.m.-6:35 a.m.

2 stops43h 25m

Sydney Kingsford Smith

Tue 10/3

11:30 a.m.-4:20 p.m.

2 stops43h 50m

C$ 2,068

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 2/3

7:10 p.m.-7:25 a.m.

3 stops44h 15m

Sydney Kingsford Smith

Wed 11/3

4:15 p.m.-1:15 p.m.

2 stops36h 00m

C$ 2,068

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 2/3

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

1 stop42h 00m

Sydney Kingsford Smith

Sun 8/3

3:50 p.m.-2:05 p.m.

1 stop38h 15m

C$ 2,076

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Fri 10/4

9:35 p.m.-6:15 a.m.

1 stop42h 40m

Sydney Kingsford Smith

Sat 25/4

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

1 stop37h 55m

C$ 2,079

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/1

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Montreal to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Montreal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Montreal to Sydney?

Use this chart to determine the optimal time to book a round-trip flight from Montreal to Sydney. Price data was last updated on 23 January 2026.

The best time to book flights from Montreal to Sydney is 21 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Montreal to Sydney?

Currently, July is the cheapest month in which you can book a flight from Montreal to Sydney (average of C$ 378). Flying from Montreal to Sydney in November is currently the most expensive (average of C$ 1,713). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What’s the top layover airport for flights from Montreal to Sydney?

Share of one-stop round-trip flights from Montreal to Sydney chosen by Cheapflights users in the past 12 months, using the same layover each way.

Vancouver (YVR) – chosen by Cheapflights users on 85% of one-stop itineraries from Montreal to Sydney on Cheapflights.

What’s the cheapest layover airport for flights from Montreal to Sydney?

Average round-trip fare for 1-stop flights from Montreal to Sydney, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 340.

What’s the fastest layover option from Montreal to Sydney?

Shortest average travel time for 1-stop one-way flights from Montreal to Sydney, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 8h 52m.

Which airport typically offers the quickest layover for flights from Montreal to Sydney?

Average layover duration for 1-stop one-way flights from Montreal to Sydney, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 1h 49m.

Reviews of airlines servicing Sydney

Get insights into the airlines that provide service to Sydney. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Sydney. Reviews last updated 27 January 2026.
Get a feel of what it's like to fly with Air New Zealand,Qantas Airways, andUnited Airlines from Montreal to Sydney by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air New Zealand
8.0
Very good
575 reviews
Check prices

Crew

8.5

Food

7.4

Entertainment

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air New Zealand
8.0
Very good
575 reviews
Air New Zealand
8.0
Very good
575 reviews
Check prices

Crew

8.5

Food

7.4

Entertainment

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Qantas Airways
7.5
Good
978 reviews
Air New Zealand
8.0
Very good
575 reviews
Check prices

Crew

8.5

Food

7.4

Entertainment

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
United Airlines
7.4
Good
9,205 reviews
Air New Zealand
8.0
Very good
575 reviews
Check prices

Crew

8.5

Food

7.4

Entertainment

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
American Airlines
7.2
Good
11,197 reviews
Air New Zealand
8.0
Very good
575 reviews
Check prices

Crew

8.5

Food

7.4

Entertainment

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane
Air Canada
7.1
Good
10,660 reviews
Air New Zealand
8.0
Very good
575 reviews
Check prices

Crew

8.5

Food

7.4

Entertainment

7.4

Overall

8.0

Boarding

8.2

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

David,Jan 2026

AKL - IAH

Couple of spare seats on this flight so people could spread a little. Much better than a full plane

Related info for your journey

Find useful and relevant information for your journey from Montreal to Sydney. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Sydney from Montreal?

    If you book a flight to Sydney from Montreal, you will be flying to Kingsford Smith, which is the city’s only airport. Sydney Kingsford Smith (SYD) is located 7.5 km from the centre of Sydney. There are 0 flights from Montreal to Kingsford Smith per day from 9 different airlines.

  • How long is the flight from Montreal to Sydney?

    For as low as C$ 1,968, Qatar Airways can have you in Sydney from Montreal in 43h 20m. The distance from Montreal to Sydney is about 16011 km.

  • What are the cheapest airlines flying from Montreal to Sydney round-trip?

    Currently priced at C$ 293, Porter Airlines will fly you from Montreal to Sydney and back. In addition to Porter Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from WestJet and Delta - these airlines can fly you to your destination from C$ 327 and C$ 447, respectively. These flights start at 86% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Montreal to Sydney one-way?

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as C$ 1,063. However, be on the lookout for offers from Qatar Airways and United Airlines, as they are both options that can get you from Montreal to Sydney for a low price.

  • Can I find deals for flights from Montreal to Sydney that include hotel bookings?

    Yes. In addition to deals on Montreal to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Montreal to Sydney?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to Sydney.

  • Can I find deals for business class flights from Montreal to Sydney?

    Yes. Cheapflights offers flight deals from Montreal to Sydney by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montreal to Sydney?

    Currently, July is the cheapest month in which you can book a flight from Montreal to Sydney (average of C$ 378). Flying from Montreal to Sydney in November is currently the most expensive (average of C$ 1,713). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Sydney?

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Montreal to Sydney on these airlines

Choose from the following airlines for your flight from Montreal to Sydney. Flights are based on user searches made on Cheapflights and were last updated on 27 January 2026.
Air Canada flights from Montreal to Sydney Kingsford Smith
United Airlines flights from Montreal to Sydney Kingsford Smith
Air New Zealand flights from Montreal to Sydney Kingsford Smith

Top 9 airlines flying from Montreal to Sydney

Discover the top 9 airlines that operate flights from Montreal to Sydney. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 27 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 293AverageC$ 378FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 327AverageC$ 504FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 447AverageC$ 1,292FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Fiji AirwaysCheapestC$ 980AverageC$ 1,108FlexibilityNo cancel feeOn-time74%
Search Fiji Airways flights
Qantas AirwaysCheapestC$ 1,096AverageC$ 1,809FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapestC$ 1,500AverageC$ 2,237FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 1,655AverageC$ 2,279FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Air New ZealandCheapestC$ 1,716AverageC$ 1,875FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Qatar AirwaysCheapestC$ 2,001AverageC$ 2,291FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Montreal to Sydney?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Montreal to Sydney. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Montreal to Sydney?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Sydney from Montreal.

Can Cheapflights find flights from Montreal to Sydney with no change fees?

Need flexible booking options for your flight to Sydney from Montreal? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Montreal to Sydney become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Sydney from Montreal today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.