Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis from C$ 291
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis departing on 13/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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American Airlines flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis
Our best American Airlines deals on Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flight tickets
Air Canada flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis
Our best Air Canada deals on Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flight tickets
See travel insights to St. Louis from
How to get the cheapest flight ticket from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
The month of May is, on average, the cheapest month to fly to St. Louis from Montreal Pierre Elliott Trudeau Intl Airport, with most prices found around C$ 608. If you don’t want to visit St. Louis in May, then you should wait until April to fly from Montreal Pierre Elliott Trudeau Intl Airport, when ticket prices are also cheap, with an average price of C$ 659.
What is the cheapest day to depart on your flight to St. Louis?
Our data shows that Friday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 608. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 1,032.
What is the cheapest time of day to depart on your flight to St. Louis?
The cheapest time of day to fly to St. Louis is in the morning when flights can be purchased for as low as C$ 689. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are C$ 793 on average. Flights to St. Louis from Montreal Pierre Elliott Trudeau Intl Airport in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.
What is the cheapest Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis flight route?
Fly from Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis for the best Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis flight prices
What cabin class options are available on Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis flights?
There are 1 cabin classes available to choose from on Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flights?
You could potentially save up to 11% on your flight if you consider stops on a Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flight.
What is the cheapest airline that flies from Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis?
American Airlines, Delta, and Air Canada are the most popular carriers operating from Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis
Which airlines fly to St. Louis?
Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to St. Louis from Montreal Pierre Elliott Trudeau Intl Airport according to our data. Air Canada is the first choice among our users, with 57% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
How many flights depart from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis on average per day?
As of June 2025, there are 2 flights per day flying from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis. The most common time of day flights depart is 6:00p.m., with 100% of flights taking off in the evening.
How many flights depart from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis on average per week?
As of June 2025, there are 14 flights per week flying from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.
When to book flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis
Cheap Montreal Pierre Elliott Trudeau Intl Airport to St. Louis (YUL to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis
Best price found | C$ 291 |
|---|---|
Fastest flight time | 2h 47m |
Direct flights | Every day |
Airports in St. Louis | 1 airport |
How far is Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis by plane?
A flight from Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis will travel around 1551.0 km. By plane, this route typically takes 2h 47m.
When did momondo last update prices for flights from Montreal Pierre Elliott Trudeau Intl Airport to Lambert-St Louis Airport?
Prices for flights from Montreal Pierre Elliott Trudeau Intl Airport to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from Montreal Pierre Elliott Trudeau Intl Airport to Lambert-St Louis Airport?
There are 3 operators available for flights from Montreal Pierre Elliott Trudeau Intl Airport to Lambert-St Louis Airport as of June 2025.
How old do you have to be to fly from Montreal Pierre Elliott Trudeau Intl Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Montreal Pierre Elliott Trudeau Intl Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis is Canadair (Bombardier) Regional Jet 900 (62.50% of total bookings). The next most popular plane model is Airbus A220-300 (37.50%).
What is the most popular airline from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis is Air Canada (57% of total bookings). The next most popular airlines are WestJet (27%) and United Airlines (16%).
Best airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis
Compare and see reviews for airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 532 | Free Cancellation | Rating 7.1 9,553 reviews | |||
| PriceFrom C$ 582 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom C$ 728 | Free Cancellation | Rating 7.2 2,873 reviews |
United Airlines Flights From Montreal Pierre Elliott Trudeau Intl Airport to St. Louis
The lowest priced United Airlines flight from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis from the last 72 hours was C$ 429. Generally, United Airlines has 7 flights on this route every week with an average price of C$ 540. United Airlines is rated 7.4/10 by our users.
Air Canada Flights From Montreal Pierre Elliott Trudeau Intl Airport to St. Louis
Air Canada (7.1/10 from 9,554 reviews) operates around 7 flights from Montreal Pierre Elliott Trudeau Intl Airport to St. Louis in any given week. The average Air Canada airfare for this route is around C$ 536, with deals from around C$ 392 rare but found on momondo. Referenced prices are for round-trip Montreal Pierre Elliott Trudeau Intl Airport to St. Louis flight searches in the last 72 hours.
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Why should I use momondo to find a flight deal from Montreal to St. Louis?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Montreal to St. Louis. momondo saves you time and could save you money on your trip.
Can I find flights from Montreal to St. Louis with flexible booking policies on momondo?
momondo does allow users to show only those flights to St. Louis from Montreal which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Montreal to St. Louis?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Montreal.
I’m not ready to book a flight from Montreal to St. Louis right now. Can momondo alert me if prices change?
Price alerts on flights to St. Louis from Montreal are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.