Cheap Flights from St. Louis (STL) to Montreal (YUL)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Montreal–Trudeau Intl. Airport (YUL)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save on select hotels after you book a flight*
    trophy illustration

    Find the right fit

    We search billions of combinations of flights to help you find your next adventure

Frequently asked questions

How long does it take to fly from Lambert Field to Montreal Airport?
Air Canada has a direct flight heading off from Lambert-St. Louis Intl. Airport (STL) at 11:00AM and reaching Pierre Elliott Trudeau Intl. Airport (YUL) at 2:23PM — a total travel time of 2 hours and 23 minutes. Pick your preferred seat, pack some things to keep you amused and the time will whiz by.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Pierre Elliott Trudeau Intl. Airport (YUL) last minute?
When it comes to booking your flights, being prepared pays dividends. While you could pick up a last-minute deal on a STL to YUL flight, fares usually don't get cheaper as the departure date nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to book a domestic flight is between 28 – 35 days ahead. For international travel it's between three and four months.
What airports do you fly into for Montreal from St. Louis?
Pierre Elliott Trudeau Intl. Airport (YUL) is where all St. Louis to Montreal flights come in to land. It's situated roughly 14 kilometers west of central Montreal. You can score the best deals on flights, activities, hotels and more when you book your Montreal trip with Expedia.
What are the most popular departure times for flights from Lambert-St. Louis Intl. Airport (STL) to Montréal–Trudeau?
For Air Canada flights jetting out from Lambert Field to Pierre Elliott Trudeau Intl. Airport (YUL), the busiest period is between 11:00 AM - 12:00 PM. If you want to avoid holdups, book the earliest flight. This way you're more likely to dodge the air traffic that accumulates later in the day.
Can I change the date of my flight from Lambert Field to YUL?
Plans don't always work out, so Expedia is here to help make things easier. To start, access your STL to Pierre Elliott Trudeau Intl. Airport (YUL) itinerary through the Expedia Trips portal and check the ticket rules about what changes are allowed. If you booked in the last 24 hours, some airlines will allow you to cancel for free and book new flights. If you bought your ticket more than 24 hours ago, connect with us through our Customer Service portal to learn more about your options.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Pierre Elliott Trudeau Intl.
Distance
1547 km
Average flight time
2 hours 30 mins

Book with confidence

St. Louis to Montreal Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from St. Louis to Montreal offer the perfect respite. Not only does exploring Montreal provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from St. Louis to Montreal may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Montreal are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Montreal more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Montreal is now!

St. Louis to Montreal Flights

Explore a world of travel with Expedia