Cheap flights from Montreal to St. Louis from $209
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 to St. Louis departing on 5/20. 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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How to get the cheapest flight ticket from Montreal 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 typical price of a round-trip flight between Montreal and St. Louis?
What is the cheapest month to fly to St. Louis?
In general, July is the cheapest month to fly from Montreal to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $435. The month of August is another great option to travel to St. Louis, with average flight prices from Montreal averaging around $491.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $282. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $811. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Montreal in the evening is the least expensive time of day to depart. momondo users have found prices as low as $340 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $593 per ticket.
What is the cheapest Montreal to Lambert-St Louis flight route?
Fly from Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis for the best Montreal - Lambert-St Louis flight prices
When to book flights from Montreal to St. Louis
Cheap Montreal to St. Louis (YMQ to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Montreal to St. Louis
Best Price Found | $209 |
|---|---|
Fastest flight time | 2h 47m |
Direct flights | Wed, Thu, Fri, Sat and Sun |
Airports in St. Louis | 1 airport |
How far is Montreal to Lambert-St Louis by plane?
A flight from Montreal to Lambert-St Louis will travel around 973.0 mi. Typically, this will take 2h 48m by plane in normal conditions.
When did momondo last update prices for flights from Montreal to Lambert-St Louis Airport?
Prices for flights from Montreal to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from Montreal to Lambert-St Louis Airport?
As of April 2025, there are 2 operators available to choose from for flights from Montreal to Lambert-St Louis Airport.
How old do you have to be to fly from Montreal to Lambert-St Louis Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montreal 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 to St. Louis?
momondo data reveals that the most frequently booked plane model on the route from Montreal to St. Louis is Airbus A220-300, representing 63.16% of all bookings. The subsequent popular model is Canadair (Bombardier) Regional Jet 900 at 36.84%.
What is the most popular airline from Montreal to St. Louis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Montreal to St. Louis is Air Canada (100% of total bookings).
Best airlines flying from Montreal to St. Louis
Compare and see reviews for airlines that fly from Montreal to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $285 | Free Cancellation | Rating 7.0 9,085 reviews | |||
| PriceFrom $452 | Free Cancellation | Rating 8.0 7,911 reviews |
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Montreal to St. Louis?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Montreal to St. Louis. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Montreal to St. Louis with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for Montreal to St. Louis flights to just show those with flexible booking policies.
How can momondo help me find flights from Montreal to St. Louis?
Once all potential Montreal to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Montreal to St. Louis right now. Can momondo alert me if prices change?
If you are simply researching potential flights to St. Louis, momondo offers a useful price alert feature which will track prices for flights to St. Louis from Montreal and alert you when they change.