$146 Cheap Flights from Montreal (YUL) to Castries (SLU)

View $146 flight on Sat, Sep 13, 2025Opens in a new window

Popular airlines from Montreal–Trudeau Intl. Airport (YUL) to George F. L. Charles Airport (SLU)

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Cheap Flights from Montreal to Castries (YUL-SLU)

Prices were available within the past 7 days and start at $146 for one-way flights and $434 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Aug 19 - Sat, Aug 23
YUL
Montreal
UVF
Vieux Fort
$434 Roundtrip, found 3 days ago
$434
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Aug 19 from Montreal to Vieux Fort, returning Sat, Aug 23, priced at $434 found 3 days ago
American Airlines
Fri, Aug 15 - Sat, Aug 23
YUL
Montreal
UVF
Vieux Fort
$453 Roundtrip, found 3 days ago
$453
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Aug 15 from Montreal to Vieux Fort, returning Sat, Aug 23, priced at $453 found 3 days ago
American Airlines
Wed, Aug 20 - Sat, Aug 23
YUL
Montreal
UVF
Vieux Fort
$457 Roundtrip, found 3 days ago
$457
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Aug 20 from Montreal to Vieux Fort, returning Sat, Aug 23, priced at $457 found 3 days ago
American Airlines
Wed, Aug 20 - Fri, Aug 22
YUL
Montreal
UVF
Vieux Fort
$462 Roundtrip, found 3 days ago
$462
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Aug 20 from Montreal to Vieux Fort, returning Fri, Aug 22, priced at $462 found 3 days ago
WestJet
Wed, Nov 12 - Thu, Nov 20
YUL
Montreal
UVF
Vieux Fort
$473 Roundtrip, found 5 days ago
$473
Roundtrip
found 5 days ago
Select WestJet flight, departing Wed, Nov 12 from Montreal to Vieux Fort, returning Thu, Nov 20, priced at $473 found 5 days ago
Air Canada
Tue, Aug 19 - Tue, Aug 26
YUL
Montreal
UVF
Vieux Fort
$486 Roundtrip, found 4 days ago
$486
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Aug 19 from Montreal to Vieux Fort, returning Tue, Aug 26, priced at $486 found 4 days ago
American Airlines
Sat, Aug 16 - Sat, Aug 23
YUL
Montreal
UVF
Vieux Fort
$487 Roundtrip, found 3 days ago
$487
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Aug 16 from Montreal to Vieux Fort, returning Sat, Aug 23, priced at $487 found 3 days ago
American Airlines
Tue, Aug 19 - Tue, Aug 26
YUL
Montreal
UVF
Vieux Fort
$491 Roundtrip, found 4 days ago
$491
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Aug 19 from Montreal to Vieux Fort, returning Tue, Aug 26, priced at $491 found 4 days ago
Air Canada
Mon, Aug 18 - Mon, Aug 25
YUL
Montreal
UVF
Vieux Fort
$502 Roundtrip, found 3 days ago
$502
Roundtrip
found 3 days ago
Select Air Canada flight, departing Mon, Aug 18 from Montreal to Vieux Fort, returning Mon, Aug 25, priced at $502 found 3 days ago
Delta
Fri, Nov 14 - Tue, Nov 25
YUL
Montreal
UVF
Vieux Fort
$545 Roundtrip, found 5 days ago
$545
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Nov 14 from Montreal to Vieux Fort, returning Tue, Nov 25, priced at $545 found 5 days ago

Find the cheapest month to fly from Montreal (YUL) to Castries (SLU)

October is typically the cheapest month to fly

From $310 - $733 per traveler.

Graph displaying average flight prices per month

Alternative airports near Castries

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Hewanorra Intl. UVF. Cheapest option available. Average driving time to city center is 53 minutes. Flights from $1,250
UVF
Hewanorra Intl.
Cheapest
Average driving time to city center53 min
Flights from $1,250
Flights from Montreal (YUL) to Vieux Fort (UVF)
Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
Hewanorra Intl.
Roundtrip price
$434
Distance
2315 mi

Montreal to Castries Flights

The cheapest times to fly from Montreal to Castries

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

 

The best time to book a flight from Montreal to Castries

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

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 Castries in 2025. You can also book with separate airlines for your outbound and return journeys, from $146 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 Castries 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 Castries 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 George F. L. Charles Airport (SLU) cost?
Discover the latest flight deals from YUL to SLU 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 SLU?
The cheapest flights from YUL to SLU 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 SLU?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from YUL to SLU. 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 George F. L. Charles Airport (SLU)?
Direct flights from Pierre Elliott Trudeau Intl. Airport (YUL) to George F. L. Charles Airport (SLU) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from YUL to SLU?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary based on a range of factors, including 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 Pierre Elliott Trudeau Intl. Airport (YUL) to George F. L. Charles Airport (SLU)?
To land at George F. L. Charles Airport (SLU) on time, pick a flight that takes off from Pierre Elliott Trudeau Intl. Airport (YUL) 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 Pierre Elliott Trudeau Intl. Airport (YUL) to George F. L. Charles Airport (SLU) last-minute?
Booking your ticket from YUL to SLU shortly before your trip is generally more expensive. But if you're flexible with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a YUL to SLU flight and hotel package?
You'll typically save money by booking a YUL to SLU flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After selecting your preferred accommodations and flights, consider adding extras like activities, car rentals and tours.
Can I cancel or change the date of my flight from Pierre Elliott Trudeau Intl. Airport (YUL) to George F. L. Charles Airport (SLU)?
If you booked your YUL to SLU flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more details.

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*Available to One Key members.