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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Sydney from C$ 911

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 9/3. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — SYD
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

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 Sunday or Thursday and return on a Thursday

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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 6 November 2025.

Sat 22/116:20 p.m.YUL - SYD
1 stop23h 15mAir Canada
Sat 6/1211:20 a.m.SYD - YUL
1 stop24h 06mAir Canada
Deal found 6/11C$ 2,043
Sat 29/119:00 a.m.YUL - SYD
1 stop32h 35mAir Canada
Sat 6/124:00 p.m.SYD - YUL
1 stop21h 00mAir Canada
Deal found 4/11C$ 2,054
Fri 21/119:30 p.m.YUL - SYD
2 stops44h 05mAir Canada
Sun 28/1211:20 a.m.SYD - YUL
2 stops40h 03mAir Canada
Deal found 5/11C$ 2,062
Fri 28/111:20 p.m.YUL - SYD
2 stops28h 15mAir Canada
Thu 4/1211:20 a.m.SYD - YUL
1 stop21h 40mAir Canada
Deal found 5/11C$ 2,088
Fri 21/119:30 p.m.YUL - SYD
2 stops44h 05mAir Canada
Fri 5/1211:20 a.m.SYD - YUL
1 stop24h 05mAir Canada
Deal found 5/11C$ 2,103
Mon 1/121:00 p.m.YUL - SYD
2 stops28h 35mAir Canada
Mon 15/124:00 p.m.SYD - YUL
2 stops23h 09mAir Canada
Deal found 5/11C$ 2,130
Mon 10/112:13 p.m.YUL - SYD
2 stops26h 52mUnited Airlines
Sun 7/122:00 p.m.SYD - YUL
2 stops40h 00mUnited Airlines
Deal found 5/11C$ 2,167

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 6 November 2025.

Round-trip from

C$ 2,043

One-way from

C$ 962

Popular in

December

Cheapest in

May

Average price

C$ 2,277
Air Canada
  • Air Canada
  • 22/11-6/12
  • 3 total stops
  • 54h 15m total
  • Montreal to Sydney
Search Deals
6/12
  • 6/12
  • 3 total stops
  • 52h 45m total
  • Montreal to Sydney
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 410 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 629,999 searches. Data last updated 6 November 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

Tue 24/2

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

1 stop42h 00m

Sydney Kingsford Smith

Tue 10/3

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

1 stop38h 15m

C$ 2,067

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 6/4

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

1 stop42h 40m

Sydney Kingsford Smith

Tue 14/4

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

1 stop37h 55m

C$ 2,136

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

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

1 stop42h 40m

Sydney Kingsford Smith

Tue 28/4

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

1 stop37h 55m

C$ 2,136

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Mon 26/1

2:13 p.m.-9:05 a.m.

2 stops26h 52m

Sydney Kingsford Smith

Tue 7/4

9:30 a.m.-9:40 p.m.

2 stops26h 10m

C$ 2,167

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Tue 14/4

11:00 a.m.-6:55 a.m.

2 stops29h 55m

Sydney Kingsford Smith

Sun 10/5

10:20 a.m.-9:01 p.m.

2 stops24h 41m

C$ 2,167

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 22/2

2:13 p.m.-9:05 a.m.

2 stops26h 52m

Sydney Kingsford Smith

Sun 8/3

10:20 a.m.-8:07 p.m.

2 stops25h 47m

C$ 2,167

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 1/2

3:00 p.m.-9:15 a.m.

2 stops26h 15m

Sydney Kingsford Smith

Sun 22/2

11:20 a.m.-2:00 p.m.

2 stops42h 40m

C$ 2,172

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 29/3

9:45 a.m.-8:00 a.m.

2 stops31h 15m

Sydney Kingsford Smith

Sun 5/4

10:20 a.m.-10:11 a.m.

2 stops37h 51m

C$ 2,178

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Tue 13/1

9:15 a.m.-6:20 a.m.

2 stops29h 05m

Sydney Kingsford Smith

Tue 27/1

12:10 p.m.-7:48 p.m.

2 stops23h 38m

C$ 2,178

MontrealSydney

YUL - SYD

YULSYD

Montreal Pierre Elliott Trudeau Intl

Sun 11/1

9:15 a.m.-9:05 a.m.

2 stops31h 50m

Sydney Kingsford Smith

Wed 21/1

11:20 a.m.-7:48 p.m.

2 stops24h 28m

C$ 2,178

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/11

Showing 1-10 of 19 results
1
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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 31 October 2025.

The best time to book flights from Montreal Pierre Elliott Trudeau Intl Airport to Sydney is 51 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 Pierre Elliott Trudeau Intl Airport to Sydney?

Currently, July is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney (average of C$ 389). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Sydney in January is currently the most expensive (average of C$ 1,864). 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 6 November 2025.

When flying from Montreal Pierre Elliott Trudeau Intl Airport to Sydney, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 16% versus a flight in the afternoon.

What is the cheapest day to fly from Montreal Pierre Elliott Trudeau Intl Airport to Sydney?

Use this chart to determine the cheapest time to fly round-trip from Pierre Elliott Trudeau Intl to Sydney. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to Sydney flight should consider departing on Tuesday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 6 November 2025.
Read through reviews of airlines operating flights from Montreal Pierre Elliott Trudeau Intl Airport to Sydney, such as Porter Airlines,Air New Zealand, andDelta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
387 reviews
Check prices

Food

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Porter Airlines
8.0
Very good
387 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Food

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Air New Zealand
8.0
Very good
526 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Food

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Delta
7.9
Good
8,001 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Food

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
United Airlines
7.4
Good
9,007 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Food

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Air Canada
7.1
Good
10,416 reviews
Porter Airlines
8.0
Very good
387 reviews
Check prices

Food

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.6

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.

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?

    If you book a flight to Sydney from Montreal Pierre Elliott Trudeau Intl, 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 Pierre Elliott Trudeau Intl to Kingsford Smith per day from 8 different airlines.

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

    Airlines like Qatar Airways and United Airlines fly from Montreal Pierre Elliott Trudeau Intl Airport to Sydney in about 26h 52m. The time it takes to get you to your destination can typically vary by up to 15h 08m. Montreal Pierre Elliott Trudeau Intl Airport and Sydney are separated by a distance of 16011 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Flying on Porter Airlines is currently your cheapest option to Sydney, with prices starting at C$ 302. Additional round-trip tickets that might be worth considering are offered by WestJet and Delta, with the lowest prices starting at C$ 336 and C$ 460, respectively. Porter Airlines is priced at 86% lower than the current average price of a flight leaving 3 months from now.

  • 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, July is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Sydney (average of C$ 389). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Sydney in January is currently the most expensive (average of C$ 1,864). 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

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Fly from Pierre Elliott Trudeau Intl to Sydney on these airlines

Choose from the following airlines for your flight from Pierre Elliott Trudeau Intl to Sydney. Flights are based on user searches made on Cheapflights and were last updated on 6 November 2025.
Air Canada flights from Montreal Pierre Elliott Trudeau Intl to Sydney Kingsford Smith
United Airlines flights from Montreal Pierre Elliott Trudeau Intl to Sydney Kingsford Smith

Top 8 airlines flying from Pierre Elliott Trudeau Intl to Sydney

Discover the top 8 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 629,999 searches. Data last updated 6 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 302AverageC$ 390FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
WestJetCheapestC$ 336AverageC$ 571FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 460AverageC$ 900FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Qantas AirwaysCheapestC$ 1,129AverageC$ 1,864FlexibilityNo cancel feeOn-time74%
Search Qantas Airways flights
United AirlinesCheapestC$ 1,701AverageC$ 2,270FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air New ZealandCheapestC$ 1,768AverageC$ 1,872FlexibilityNo cancel feeOn-time78%
Search Air New Zealand flights
Air CanadaCheapestC$ 1,797AverageC$ 2,365FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Qatar AirwaysCheapestC$ 2,072AverageC$ 2,360FlexibilityNo cancel feeOn-time68%
Search Qatar Airways flights

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How does Cheapflights help users find flights from Pierre Elliott Trudeau Intl to Sydney?

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Can Cheapflights find flights from Pierre Elliott Trudeau Intl to Sydney with no change fees?

Yes, we can. To see specific flights from Pierre Elliott Trudeau Intl to Sydney with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl today and book when prices fit your budget.

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