Cheap Flights from Montreal (YUL) to Posadas (PSS)

Popular airlines from Montreal–Trudeau Intl. Airport (YUL) to Posadas (PSS-Libertador General Jose de San Martin)

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Cheap Flights from Montreal to Posadas (YUL-PSS)

Prices were available within the past 7 days and start at for one-way flights and $1,791 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, Oct 2 - Sun, Oct 12
YUL
Montreal
PSS
Posadas
$1,791 Roundtrip, found 14 hours ago
$1,791
Roundtrip
found 14 hours ago
Select Air Canada flight, departing Thu, Oct 2 from Montreal to Posadas, returning Sun, Oct 12, priced at $1,791 found 14 hours ago
Air Canada
Fri, Oct 3 - Sun, Oct 12
YUL
Montreal
PSS
Posadas
$1,793 Roundtrip, found 1 day ago
$1,793
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 3 from Montreal to Posadas, returning Sun, Oct 12, priced at $1,793 found 1 day ago
Air Canada
Fri, Oct 3 - Fri, Oct 17
YUL
Montreal
PSS
Posadas
$1,887 Roundtrip, found 14 hours ago
$1,887
Roundtrip
found 14 hours ago
Select Air Canada flight, departing Fri, Oct 3 from Montreal to Posadas, returning Fri, Oct 17, priced at $1,887 found 14 hours ago
Air Canada
Fri, Oct 3 - Sun, Oct 12
YUL
Montreal
PSS
Posadas
$1,888 Roundtrip, found 1 day ago
$1,888
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Oct 3 from Montreal to Posadas, returning Sun, Oct 12, priced at $1,888 found 1 day ago
Flights from Montreal (YUL) to Posadas (PSS)
Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
Libertador General Jose de San Martin
Roundtrip price
$1,790
Distance
5155 mi

Montreal to Posadas Flights

The cheapest times to fly from Montreal to Posadas

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Montreal to Posadas are during the month of October. You can find some of the cheapest flights from Montreal to Posadas with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Montreal to Posadas

Sunday is one of the best days to book for cheap flights from Montreal to Posadas: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Montreal to Posadas

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Montreal to Posadas in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Montreal to Posadas flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Montreal to Posadas airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Libertador General Jose de San Martin Airport (PSS) cost?
Discover the latest flight deals from YUL to PSS by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from YUL to PSS?
The cheapest flights from YUL to PSS are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from YUL to PSS?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from YUL to PSS. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Pierre Elliott Trudeau Intl. Airport (YUL) to Libertador General Jose de San Martin Airport (PSS)?
You'll have to book a flight with a layover if you're traveling from Pierre Elliott Trudeau Intl. Airport (YUL) to Libertador General Jose de San Martin Airport (PSS). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from YUL to PSS?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change depending on the time of year, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Pierre Elliott Trudeau Intl. Airport (YUL) to Libertador General Jose de San Martin Airport (PSS)?
To reach Libertador General Jose de San Martin Airport (PSS) on schedule, choose a flight that leaves Pierre Elliott Trudeau Intl. Airport (YUL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Pierre Elliott Trudeau Intl. Airport (YUL) to Libertador General Jose de San Martin Airport (PSS) last-minute?
Waiting until just before your departure to book a ticket from YUL to PSS often results in higher prices. While it's possible to find some last-minute deals, there's no guarantee. Be flexible with your itinerary for a better chance of snagging a bargain.
Is it cheaper to book a YUL to PSS flight and hotel package?
You'll typically save money by booking a YUL to PSS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. After selecting your preferred flights and accommodations, consider adding extras such as activities, tours and car rentals.
Can I cancel or change the date of my flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Libertador General Jose de San Martin Airport (PSS)?
In most cases, you're able to reschedule or cancel your YUL to PSS flight. However, there may be additional charges, especially if you booked over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further information, visit our Customer Service portal.

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*Available to One Key members.