Cheap flights from St. Louis to Toronto from $139
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 4/6. 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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Air Canada flights from St. Louis to Toronto
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United Airlines flights from St. Louis to Toronto
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How to get the cheapest flight ticket from St. Louis to Toronto
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?
What is the cheapest month to fly to Toronto?
The month of May is, on average, the cheapest month to fly to Toronto from St. Louis, with most prices found around $242. If you are unable to visit Toronto during the month of May, then departing from St. Louis during the month August is also very affordable. Most momondo users find prices during this month for around $288.
What is the cheapest day to depart on your flight to Toronto?
On average, the least expensive day to fly to Toronto from St. Louis is on a Thursday. momondo users have found tickets for Thursday departures for as low as $897. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Toronto is Wednesday, with ticket prices averaging around $1,049.
What is the cheapest time of day to depart on your flight to Toronto?
In the afternoon is the cheapest time of day to fly from St. Louis to Toronto when you can find flight prices for as low as $980. Flying to Toronto in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Toronto are more costly at noon, with an average ticket price of $1,121. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Lambert-St Louis to Toronto flight route?
Fly from Lambert-St Louis to Toronto Pearson Intl for the best Lambert-St Louis - Toronto flight prices
How far in advance should I book a flight to Toronto?
You are more likely to see cheaper flights to Toronto from St. Louis when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Toronto for around $455 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto from St. Louis for as low as $214 on momondo.
What cabin class options are available on Lambert-St Louis to Toronto flights?
There are 4 cabin classes available to choose from on Lambert-St Louis to Toronto flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Lambert-St Louis to Toronto?
Delta, Air Canada, and United Airlines are the most popular carriers operating from Lambert-St Louis to Toronto
What airlines fly to Toronto?
Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Toronto from St. Louis according to our data. Air Canada is the first choice among our users, with 67% of people opting to fly with this airline when traveling to Toronto. Keep in mind that there are 3 different airlines that fly to Toronto on a routine basis, so you have a few additional options to choose from.
How many flights depart from St. Louis to Toronto on average per day?
The number of flights available between St. Louis and Toronto is 1 per day as of March 2025. The most frequent departure time is 3:00PM, with 100% of daily flights leaving in the afternoon.
How many flights depart from St. Louis to Toronto on average per week?
As of March 2025, 9 flights take off from St. Louis and land in Toronto each week. The most common flight departure day for this route is Mon, with 22% of weekly flights taking off on this day.
When to book flights from St. Louis to Toronto
Cheap St. Louis to Toronto (STL to YTO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from St. Louis to Toronto
How far is Lambert-St Louis to Toronto by plane?
The straight-line distance from Lambert-St Louis to Toronto is 659.9 mi. A reasonable flight in good conditions will take 1h 55m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Toronto?
Prices for flights from Lambert-St Louis Airport to Toronto are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Toronto?
As of March 2025, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Toronto.
How old do you have to be to fly from Lambert-St Louis Airport to Toronto?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Toronto.
What documentation or ID do you need to fly to Toronto?
The required travel and health documents for your Toronto 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. 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?
Based on momondo bookings for flights between St. Louis and Toronto, the leading plane model is Canadair (Bombardier) Regional Jet 900, making up 49.35% of the total bookings. Other popular models include Airbus A220-300 with 33.77%, Boeing 777-300ER with 3.46%, and Boeing 777-200/200ER with 1.73%.
What is the most popular airline from St. Louis to Toronto?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Toronto is Air Canada, representing 77% of all bookings. The subsequent popular airlines are United Airlines at 16% and American Airlines at 7%.
Best airlines flying from St. Louis to Toronto
Compare and see reviews for airlines that fly from St. Louis to Toronto with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $223 | Free Cancellation | Rating 7.0 8,967 reviews | |||
| PriceFrom $237 | Free Cancellation | Rating 7.4 8,608 reviews | |||
| PriceFrom $304 | Free Cancellation | Rating 7.2 10,000 reviews |
United Airlines Flights From St. Louis to Toronto
United Airlines flight deals from St. Louis to Toronto start from $237 round-trip. Over the 6 United Airlines flights for this route in a normal week, average airfare is usually $537 round-trip - but some users have found much cheaper deals with momondo.
Air Canada Flights From St. Louis to Toronto
Air Canada is also a popular choice for this route. Air Canada flight deals for St. Louis to Toronto start from as low as $223 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $502. Air Canada operates 3 flights to Toronto from St. Louis in an average week. Users have rated it 7.0/10 across 8,972 reviews.
Why use momondo?
Why should I use momondo to find a flight deal from St. Louis to Toronto?
To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Toronto from St. Louis.
Can I find flights from St. Louis to Toronto with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for St. Louis to Toronto flights to just show those with flexible booking policies.
How can momondo help me find flights from St. Louis to Toronto?
Once you have performed a search for St. Louis to Toronto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from St. Louis to Toronto right now. Can momondo alert me if prices change?
Yes. momondo can track prices for St. Louis to Toronto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.