$255 Cheap Flights from Montreal (YUL) to St. Thomas (STT)

View $255 flight on Sun, Sep 28, 2025Opens in a new window

Popular airlines from Montreal–Trudeau Intl. Airport (YUL) to Cyril E. King Airport (STT)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Montreal to St. Thomas (YUL-STT)

Prices were available within the past 7 days and start at $255 for one-way flights and $423 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, Nov 23 - Thu, Nov 27
YUL
Montreal
STT
St. Thomas
$423 Roundtrip, found 3 days ago
$423
Roundtrip
found 3 days ago
Select United flight, departing Sun, Nov 23 from Montreal to St. Thomas, returning Thu, Nov 27, priced at $423 found 3 days ago
Delta
Mon, Jan 12 - Tue, Jan 20
YUL
Montreal
STT
St. Thomas
$425 Roundtrip, found 5 days ago
$425
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Jan 12 from Montreal to St. Thomas, returning Tue, Jan 20, priced at $425 found 5 days ago
United
Fri, Jan 9 - Tue, Jan 20
YUL
Montreal
STT
St. Thomas
$437 Roundtrip, found 5 days ago
$437
Roundtrip
found 5 days ago
Select United flight, departing Fri, Jan 9 from Montreal to St. Thomas, returning Tue, Jan 20, priced at $437 found 5 days ago
United
Sun, Sep 28 - Sat, Oct 4
YUL
Montreal
STT
St. Thomas
$439 Roundtrip, found 6 days ago
$439
Roundtrip
found 6 days ago
Select United flight, departing Sun, Sep 28 from Montreal to St. Thomas, returning Sat, Oct 4, priced at $439 found 6 days ago
Delta
Thu, Jan 8 - Wed, Jan 14
YUL
Montreal
STT
St. Thomas
$448 Roundtrip, found 5 days ago
$448
Roundtrip
found 5 days ago
Select Delta flight, departing Thu, Jan 8 from Montreal to St. Thomas, returning Wed, Jan 14, priced at $448 found 5 days ago
Delta
Mon, Jan 12 - Wed, Jan 14
YUL
Montreal
STT
St. Thomas
$449 Roundtrip, found 5 days ago
$449
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Jan 12 from Montreal to St. Thomas, returning Wed, Jan 14, priced at $449 found 5 days ago
Delta
Fri, Sep 26 - Mon, Oct 6
YUL
Montreal
STT
St. Thomas
$451 Roundtrip, found 6 days ago
$451
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Sep 26 from Montreal to St. Thomas, returning Mon, Oct 6, priced at $451 found 6 days ago
United
Sun, Nov 2 - Thu, Nov 13
YUL
Montreal
STT
St. Thomas
$460 Roundtrip, found 3 days ago
$460
Roundtrip
found 3 days ago
Select United flight, departing Sun, Nov 2 from Montreal to St. Thomas, returning Thu, Nov 13, priced at $460 found 3 days ago
American Airlines
Sat, Aug 23 - Sat, Aug 30
YUL
Montreal
STT
St. Thomas
$535 Roundtrip, found 6 days ago
$535
Roundtrip
found 6 days ago
Select American Airlines flight, departing Sat, Aug 23 from Montreal to St. Thomas, returning Sat, Aug 30, priced at $535 found 6 days ago
Air Canada
Fri, Dec 12 - Sun, Dec 21
YUL
Montreal
STT
St. Thomas
$784 Roundtrip, found 3 days ago
$784
Roundtrip
found 3 days ago
Select Air Canada flight, departing Fri, Dec 12 from Montreal to St. Thomas, returning Sun, Dec 21, priced at $784 found 3 days ago

Find the cheapest month to fly from Montreal (YUL) to St. Thomas (STT)

January is typically the cheapest month to fly

From $372 - $858 per traveler.

Graph displaying average flight prices per month

Alternative airports near St. Thomas

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

Select flight to Cyril E. King STT. Cheapest option available. Flights from $535
STT
Cyril E. King
Cheapest
Flights from $535
Flights from Montreal (YUL) to St. Thomas (STT)
Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
Cyril E. King
Airlines serving
American Airlines, United
Roundtrip price
$423
Distance
1940 mi

Montreal to St. Thomas Flights

The cheapest times to fly from Montreal to St. Thomas

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

 

The best time to book a flight from Montreal to St. Thomas

Sunday is one of the best days to book for cheap flights from Montreal to St. Thomas: 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 St. Thomas

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 St. Thomas in 2025. You can also book with separate airlines for your outbound and return journeys, from $255 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 St. Thomas 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 St. Thomas 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 Cyril E. King Airport (STT) cost?
Lock in a cheap one-way flight from $255 or cheap return flight from $423 from Pierre Elliott Trudeau Intl. Airport (YUL) to Cyril E. King Airport (STT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Pierre Elliott Trudeau Intl. Airport (YUL) to Cyril E. King Airport (STT)?
November is the cheapest month to fly from YUL to STT. Timing your trip outside of the busy season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Pierre Elliott Trudeau Intl. Airport (YUL) to Cyril E. King Airport (STT)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll fly you from YUL to STT. Then, sort your results by "Price (lowest to highest)" to score the best deal available.
How many flights per day from Pierre Elliott Trudeau Intl. Airport (YUL) to Cyril E. King Airport (STT)?
There aren't any daily direct flights departing from Pierre Elliott Trudeau Intl. Airport (YUL) to Cyril E. King Airport (STT). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from YUL to STT?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on a range of factors, such as the airline and season.*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 Cyril E. King Airport (STT)?
To avoid possible delays on the Pierre Elliott Trudeau Intl. Airport (YUL) to Cyril E. King Airport (STT) route, aim to travel before 3 PM. Later departures have a 22% higher chance of being canceled.**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 Cyril E. King Airport (STT) last-minute?
Booking your flight from YUL to STT just before your trip is usually more expensive. But if there's some wiggle room with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a YUL to STT flight and hotel package?
Securing a YUL to STT flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Choose from our extensive range of accommodations and then add flights, car rentals and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Cyril E. King Airport (STT)?
If you booked your YUL to STT flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

Explore a world of travel with Expedia

*Available to One Key members.