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$604+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to Sydney (SYD)

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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SYD
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Sydney Kingsford Smith are usually found in May or April, booked 51 days in advance, depart on a Wednesday or Sunday and return on a Tuesday

Cheap flight deals from Pierre Elliott Trudeau Intl to Sydney

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) 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 September 16, 2025.

Round-trip from

$1,485
(Qatar Airways)

One-way from

$620
(Kiwi.com)

Popular in

December

Cheapest in

May

Average price

$1,560
From Montreal Pierre Elliott Trudeau Intl to Sydney Kingsford Smith
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One-way flight from Montreal Pierre Elliott Trudeau Intl to Sydney Kingsford Smith
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Highest demand for flights based on searches. 10% potential increase in price ($188 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Pierre Elliott Trudeau Intl to Sydney

Cheapest flights from Pierre Elliott Trudeau Intl to Sydney
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Sydney. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/12:20 pmYUL - SYD
2 stops26h 40mUnited Airlines
Mon 10/2011:20 amSYD - YUL
1 stop35h 56mUnited Airlines
Deal found 9/15$1,565
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/93:00 pmYUL - SYD
2 stops26h 15mUnited Airlines
Mon 11/2412:10 pmSYD - YUL
2 stops25h 07mUnited Airlines
Deal found 9/15$1,568
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/29:45 amYUL - SYD
2 stops31h 10mUnited Airlines
Tue 12/212:10 pmSYD - YUL
2 stops25h 07mUnited Airlines
Deal found 9/15$1,601
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/14:45 pmYUL - SYD
2 stops25h 20mUnited Airlines
Tue 11/1111:20 amSYD - YUL
2 stops26h 22mUnited Airlines
Deal found 9/15$1,613
This Qatar Airways deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/198:50 pmYUL - SYD
1 stop42h 00mQatar Airways
Mon 12/82:00 pmSYD - YUL
2 stops40h 05mQatar Airways
Deal found 9/14$1,618
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/26:30 pmYUL - SYD
1 stop22h 25mUnited Airlines
Fri 10/1711:20 amSYD - YUL
1 stop35h 56mUnited Airlines
Deal found 9/15$1,638
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/76:30 pmYUL - SYD
1 stop22h 25mUnited Airlines
Tue 10/2111:20 amSYD - YUL
1 stop35h 56mUnited Airlines
Deal found 9/15$1,656
This Air Canada deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/18:50 pmYUL - SYD
2 stops45h 45mAir Canada
Tue 11/1111:20 amSYD - YUL
1 stop21h 40mAir Canada
Deal found 9/14$1,681
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:30 pmYUL - SYD
1 stop22h 25mUnited Airlines
Sat 10/1811:20 amSYD - YUL
2 stops25h 09mUnited Airlines
Deal found 9/15$1,682
This Qatar Airways deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/168:50 pmYUL - SYD
1 stop42h 00mQatar Airways
Tue 12/93:50 pmSYD - YUL
1 stop38h 15mQatar Airways
Deal found 9/15$1,687
This Qatar Airways deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/168:50 pmYUL - SYD
1 stop42h 00mQatar Airways
Mon 12/157:15 amSYD - YUL
2 stops46h 50mQatar Airways
Deal found 9/15$1,691

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl 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 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Sydney that are best for you.

Fly from

Pierre Elliott Trudeau Intl

Fly to

Sydney

Route

Depart

Return

Price

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 3/2

8:50 pm-6:50 am

1 stop42h 00m

Sydney Kingsford Smith

Tue 3/10

3:50 pm-3:05 pm

1 stop38h 15m

$1,531

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Wed 2/25

8:50 pm-6:50 am

1 stop42h 00m

Sydney Kingsford Smith

Tue 3/10

3:50 pm-3:05 pm

1 stop38h 15m

$1,531

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

8:50 pm-6:50 am

1 stop42h 00m

Sydney Kingsford Smith

Tue 3/10

3:50 pm-3:05 pm

1 stop38h 15m

$1,531

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 11/3

9:15 am-9:05 am

2 stops31h 50m

Sydney Kingsford Smith

Mon 11/24

12:10 pm-9:17 pm

2 stops25h 07m

$1,565

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

3:00 pm-9:05 am

2 stops26h 05m

Sydney Kingsford Smith

Tue 3/10

10:20 am-9:30 pm

2 stops26h 10m

$1,565

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Wed 2/25

9:15 am-7:00 am

2 stops29h 45m

Sydney Kingsford Smith

Sun 3/8

10:20 am-7:18 pm

2 stops24h 58m

$1,565

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Fri 3/6

6:30 am-7:00 am

2 stops32h 30m

Sydney Kingsford Smith

Sat 3/28

10:20 am-9:30 pm

2 stops26h 10m

$1,641

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sat 1/10

6:00 pm-7:00 am

1 stop45h 00m

Sydney Kingsford Smith

Mon 2/16

11:20 am-4:58 pm

1 stop21h 38m

$1,843

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sat 11/22

10:50 am-9:05 am

3 stops30h 15m

Sydney Kingsford Smith

Sat 12/20

11:20 am-9:42 pm

2 stops26h 22m

$1,890

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 1/11

6:00 am-7:00 am

2 stops33h 00m

Sydney Kingsford Smith

Mon 2/16

11:20 am-4:58 pm

1 stop21h 38m

$1,919

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 19 results
1
2

Best time to book a flight from Pierre Elliott Trudeau Intl to Sydney

Have a flexible travel schedule? Discover the best time to fly to Sydney from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to Sydney

How far ahead should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney?

Use this chart to determine the optimal time to book a round-trip flight from Pierre Elliott Trudeau Intl to Sydney. Price data was last updated on September 12, 2025.

To ensure you get the cheapest price possible for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney, you should look to book at least 51 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney?

Currently, March is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney (average of $1,032). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Sydney in December is currently the most expensive (average of $1,627). 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 is the cheapest time of day to fly from YUL to SYD?

Find hourly flight availability from Pierre Elliott Trudeau Intl to Sydney. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

It’s typically best to fly out from Montreal Pierre Elliott Trudeau Intl Airport to Sydney in the evening. Doing so could potentially save you 47% on the flight price compared to flying at noon, which is usually more expensive.

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 September 16, 2025.
Read reviews from past customers who have flown United Airlines and Air Canada from Montreal Pierre Elliott Trudeau Intl Airport to Sydney. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
United Airlines
7.4
Good
8,929 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.
Air Canada
7.1
Good
10,000 reviews
United Airlines
7.4
Good
8,929 reviews

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2024

YVR - SFO

It was a good experience. The flight took 45 minutes longer to fly and all passengers had to wait inside the plane till the technical issue was fixed. Overall it was a good experience.

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl?

    Sydney Kingsford Smith (SYD), located 4.6 mi from the city center, is the airport you fly into when you book flights from Montreal Pierre Elliott Trudeau Intl to Sydney. 2 airlines have flights to Kingsford Smith from Montreal Pierre Elliott Trudeau Intl on a regular basis. Booking flights from Montreal Pierre Elliott Trudeau Intl to Sydney Kingsford Smith should not be difficult; the airport handles an average of 0 inbound flights from Montreal Pierre Elliott Trudeau Intl per day.

  • How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney?

    A quick flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney can take about 31h 50m. Qatar Airways provides one of the quickest options available for as low as $1,565. Airlines will cover a distance of 9949 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Sydney round-trip?

    Currently priced at $1,259, Air Canada will fly you from Montreal Pierre Elliott Trudeau Intl Airport to Sydney and back. In addition to Air Canada, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $1,370. You may be able to fly from Montreal Pierre Elliott Trudeau Intl Airport to Sydney for 23% less than the average price by searching for these airlines.

  • Can I find deals for flights from Pierre Elliott Trudeau Intl to Sydney that include hotel bookings?

    Yes. In addition to deals on Pierre Elliott Trudeau Intl to Sydney flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pierre Elliott Trudeau Intl to Sydney?

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

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Sydney?

    Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport to Sydney?

    Currently, March is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney (average of $1,032). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Sydney in December is currently the most expensive (average of $1,627). 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

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Wollongong
Manly
Coogee

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Top 2 airlines flying from Pierre Elliott Trudeau Intl to Sydney

Discover the top 2 airlines that operate flights from Pierre Elliott Trudeau Intl 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 2,558,603 searches. Data last updated September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$1,259Average$1,704FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$1,370Average$1,557FlexibilityNo cancel feeOn-time69%

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