Cheap flights from St. Louis to Toronto from $137
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Toronto departing on 9/25. 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 St. Louis to Toronto Pearson Intl Airport
Our best American Airlines deals on St. Louis to Toronto Pearson Intl Airport flight tickets
United Airlines flights from St. Louis to Toronto Pearson Intl Airport
Our best United Airlines deals on St. Louis to Toronto Pearson Intl Airport flight tickets
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How to get the cheapest flight ticket from St. Louis to Toronto Pearson Intl Airport
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 St. Louis and Toronto Pearson Intl Airport?
What is the cheapest month to fly to Toronto Pearson Intl Airport?
The cheapest month to fly to Toronto Pearson Intl Airport from St. Louis is in January. Flight prices, which tend to average around $285, are often lower during this time because this is during the off-season. If you don’t want to visit Toronto Pearson Intl Airport in January, then you should wait until October to fly from St. Louis, when ticket prices are also cheap, with an average price of $296.
What is the cheapest day to depart on your flight to Toronto Pearson Intl Airport?
The cheapest day to depart from St. Louis to Toronto Pearson Intl Airport is on a Thursday when prices can be found for as low as $856. The most expensive day to fly to Toronto Pearson Intl Airport is Friday, with ticket prices averaging around $1,003.
What is the cheapest time of day to depart on your flight to Toronto Pearson Intl Airport?
Flying to Toronto Pearson Intl Airport from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $922 when looking at flights departing in the afternoon. Flights at noon are often more expensive with an average ticket price of $1,180.
What is the cheapest Lambert-St Louis to Toronto Pearson Intl flight route?
Fly from Lambert-St Louis to Toronto Pearson Intl for the best Lambert-St Louis - Toronto Pearson Intl flight prices
How far in advance should I book a flight to Toronto Pearson Intl Airport?
You are more likely to see cheaper flights to Toronto Pearson Intl Airport from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Toronto Pearson Intl Airport for around $466 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto Pearson Intl Airport from St. Louis for as low as $221 on momondo.
What cabin class options are available on Lambert-St Louis to Toronto Pearson Intl flights?
There are 4 cabin classes available to choose from on Lambert-St Louis to Toronto Pearson Intl 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 St. Louis to Toronto Pearson Intl Airport flights?
You could potentially save up to 13% on your flight if you consider stops on a St. Louis to Toronto Pearson Intl Airport flight.
How have St. Louis to Toronto Pearson Intl Airport flight prices changed over time?
As of July 2025, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 12% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Lambert-St Louis to Toronto Pearson Intl?
American Airlines, Air Canada, and United Airlines are the most popular carriers operating from Lambert-St Louis to Toronto Pearson Intl
What airlines fly to Toronto Pearson Intl Airport?
Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Toronto Pearson Intl Airport from St. Louis according to our data. Air Canada is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Toronto Pearson Intl Airport. Keep in mind that there are 3 different airlines that fly to Toronto Pearson Intl Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from St. Louis to Toronto Pearson Intl Airport on average per day?
The number of flights available between St. Louis and Toronto Pearson Intl Airport is 3 per day as of July 2025. The most frequent departure time is 9:00AM, with 50% of daily flights leaving at noon.
How many flights depart from St. Louis to Toronto Pearson Intl Airport on average per week?
As of July 2025, 26 flights take off from St. Louis and land in Toronto Pearson Intl Airport each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.
When to book flights from St. Louis to Toronto Pearson Intl Airport
Cheap St. Louis to Toronto Pearson Intl Airport (STL to YYZ) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Toronto Pearson Intl Airport
How far is Lambert-St Louis to Toronto Pearson Intl by plane?
A flight from Lambert-St Louis to Toronto Pearson Intl will travel around 650.6 mi. In terms of flight time, this usually takes a little over 2h 00m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport?
Prices for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport?
As of July 2025, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Toronto Pearson Intl 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 Lambert-St Louis Airport to Toronto Pearson Intl Airport.
What documentation or ID do you need to fly to Toronto Pearson Intl Airport?
The required travel and health documents for your Toronto Pearson Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Toronto Pearson Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from St. Louis to Toronto Pearson Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Toronto Pearson Intl Airport is Canadair (Bombardier) Regional Jet 900, representing 59.21% of all bookings. The subsequent popular models are Airbus A220-300 at 30.26%, Airbus A321neo at 1.32%, and Boeing 777-300ER at 1.32%.
What is the most popular airline from St. Louis to Toronto Pearson Intl Airport?
Based on momondo bookings for flights between St. Louis and Toronto Pearson Intl Airport, the leading airline is Air Canada, making up 65% of the total bookings. Other popular airlines include United Airlines with 26% and American Airlines with 9%.
Best airlines flying from St. Louis to Toronto Pearson Intl Airport
Compare and see reviews for airlines that fly from St. Louis to Toronto Pearson Intl Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $214 | Free Cancellation | Rating 7.4 8,842 reviews | |||
| PriceFrom $220 | Free Cancellation | Rating 7.1 9,691 reviews | |||
| PriceFrom $395 | Free Cancellation | Rating 7.2 10,000 reviews |
United Airlines Flights From St. Louis to Toronto Pearson Intl Airport
United Airlines operates around 13 flights from St. Louis to Toronto Pearson Intl Airport every week. The average price of these flights found in the last 72 hours has been $489, but momondo users have found United Airlines deals from St. Louis to Toronto Pearson Intl Airport from as low as $214 round-trip. United Airlines has been scored 7.4/10 in 8,842 reviews.
Air Canada Flights From St. Louis to Toronto Pearson Intl Airport
Air Canada (7.1/10 from 9,691 reviews) operates around 13 flights from St. Louis to Toronto Pearson Intl Airport in any given week. The average Air Canada airfare for this route is around $480, with deals from around $220 rare but found on momondo. Referenced prices are for round-trip St. Louis to Toronto Pearson Intl Airport flight searches in the last 72 hours.
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Why should I use momondo to find a flight deal from St. Louis to Toronto?
Finding the right flight to Toronto from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Toronto quick and easy, saving you time and money.
Can I find flights from St. Louis to Toronto with flexible booking policies on momondo?
All flight searches from St. Louis to Toronto on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from St. Louis to Toronto?
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 Toronto from St. Louis.
I’m not ready to book a flight from St. Louis to Toronto right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Toronto, momondo offers a useful price alert feature which will track prices for flights to Toronto from St. Louis and alert you when they change.