$358 Cheap Flights from Great Falls (GTF) to Montreal (YUL)

View $358 flight on Tue, Oct 7, 2025Opens in a new window

Popular airlines from Great Falls, MT (GTF-Great Falls Intl.) to Montreal–Trudeau Intl. Airport (YUL)

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Cheap Flights from Great Falls to Montreal (GTF-YUL)

Prices were available within the past 7 days and start at $358 for one-way flights and $887 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Jul 18 - Sat, Aug 2
GTF
Great Falls
YUL
Montreal
$887 Roundtrip, found 2 days ago
$887
Roundtrip
found 2 days ago
Select United flight, departing Fri, Jul 18 from Great Falls to Montreal, returning Sat, Aug 2, priced at $887 found 2 days ago
Flights from Great Falls (GTF) to Montreal (YUL)
Origin airport
Great Falls Intl.
Destination airport
Pierre Elliott Trudeau Intl.
Roundtrip price
$887
Distance
1777 mi

Great Falls to Montreal Flights

The cheapest times to fly from Great Falls to Montreal

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 Great Falls to Montreal are during the month of July. You can find some of the cheapest flights from Great Falls to Montreal with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Great Falls to Montreal

Sunday is one of the best days to book for cheap flights from Great Falls to Montreal: 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 Great Falls to Montreal

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 Great Falls to Montreal in 2025. You can also book with separate airlines for your outbound and return journeys, from $358 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 Great Falls to Montreal 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 Great Falls to Montreal 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 Great Falls Intl. Airport (GTF) to Pierre Elliott Trudeau Intl. Airport (YUL) cost?
Discover the latest flight deals from GTF to YUL 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 GTF to YUL?
The cheapest flights from GTF to YUL 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 GTF to YUL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from GTF to YUL. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Great Falls Intl. Airport (GTF) to Pierre Elliott Trudeau Intl. Airport (YUL)?
There are no daily direct flights available from Great Falls Intl. Airport (GTF) to Pierre Elliott Trudeau Intl. Airport (YUL). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from GTF to YUL?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary based on various factors, such as the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Great Falls Intl. Airport (GTF) to Pierre Elliott Trudeau Intl. Airport (YUL)?
To land at Pierre Elliott Trudeau Intl. Airport (YUL) without delays, opt for a flight that takes off from Great Falls Intl. Airport (GTF) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Great Falls Intl. Airport (GTF) to Pierre Elliott Trudeau Intl. Airport (YUL) last-minute?
Holding off until right before your break to book a ticket from GTF to YUL often results in higher prices. Although you may find some last-minute deals, they aren't always guaranteed. Be flexible with your itinerary to maximize your chances of landing a bargain.
Is it cheaper to book a GTF to YUL flight and hotel package?
You'll typically save money by booking a GTF to YUL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've chosen your preferred flights and accommodations, consider adding extras including activities, car rentals and tours.
Can I cancel or change the date of my flight from Great Falls Intl. Airport (GTF) to Pierre Elliott Trudeau Intl. Airport (YUL)?
Typically, you can cancel or modify your GTF to YUL flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you'd like more details, go to our Customer Service portal.

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*Available to One Key members.