£183 Cheap Flights from St. Louis (STL) to Toronto (YYZ)

View £183 flight on Fri, 5 Jun 2026Opens in a new window

Popular airlines from Lambert-St. Louis International Airport (STL) to Toronto Pearson Intl. Airport (YYZ)

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Cheap Flights from St. Louis (STL) to Toronto (YYZ)

Prices were available within the past 7 days and start at £183 for one-way flights and £374 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, 19 Jun - Fri, 10 Jul
STL
St. Louis
YYZ
Toronto
£374 Return, found 1 day ago
£374
Return
found 1 day ago
Select American Airlines flight, departing Fri, 19 Jun from St. Louis to Toronto, returning Fri, 10 Jul, priced at £374 found 1 day ago
Delta
Fri, 19 Jun - Fri, 10 Jul
STL
St. Louis
YYZ
Toronto
£378 Return, found 1 day ago
£378
Return
found 1 day ago
Select Delta flight, departing Fri, 19 Jun from St. Louis to Toronto, returning Fri, 10 Jul, priced at £378 found 1 day ago
United
Fri, 19 Jun - Fri, 10 Jul
STL
St. Louis
YYZ
Toronto
£378 Return, found 1 day ago
£378
Return
found 1 day ago
Select United flight, departing Fri, 19 Jun from St. Louis to Toronto, returning Fri, 10 Jul, priced at £378 found 1 day ago
American Airlines
Fri, 19 Jun - Fri, 10 Jul
STL
St. Louis
YYZ
Toronto
£378 Return, found 1 day ago
£378
Return
found 1 day ago
Select American Airlines flight, departing Fri, 19 Jun from St. Louis to Toronto, returning Fri, 10 Jul, priced at £378 found 1 day ago
American Airlines
Fri, 19 Jun - Fri, 10 Jul
STL
St. Louis
YYZ
Toronto
£396 Return, found 1 day ago
£396
Return
found 1 day ago
Select American Airlines flight, departing Fri, 19 Jun from St. Louis to Toronto, returning Fri, 10 Jul, priced at £396 found 1 day ago
American Airlines
Fri, 19 Jun - Fri, 10 Jul
STL
St. Louis
YYZ
Toronto
£400 Return, found 1 day ago
£400
Return
found 1 day ago
Select American Airlines flight, departing Fri, 19 Jun from St. Louis to Toronto, returning Fri, 10 Jul, priced at £400 found 1 day ago
American Airlines
Fri, 19 Jun - Fri, 10 Jul
STL
St. Louis
YYZ
Toronto
£403 Return, found 1 day ago
£403
Return
found 1 day ago
Select American Airlines flight, departing Fri, 19 Jun from St. Louis to Toronto, returning Fri, 10 Jul, priced at £403 found 1 day ago
American Airlines
Tue, 16 Jun - Tue, 7 Jul
STL
St. Louis
YYZ
Toronto
£404 Return, found 1 day ago
£404
Return
found 1 day ago
Select American Airlines flight, departing Tue, 16 Jun from St. Louis to Toronto, returning Tue, 7 Jul, priced at £404 found 1 day ago
Air Canada
Tue, 23 Jun - Tue, 30 Jun
STL
St. Louis
YYZ
Toronto
£412 Return, found 1 day ago
£412
Return
found 1 day ago
Select Air Canada flight, departing Tue, 23 Jun from St. Louis to Toronto, returning Tue, 30 Jun, priced at £412 found 1 day ago
WestJet
Mon, 8 Jun - Sun, 14 Jun
STL
St. Louis
YYZ
Toronto
£420 Return, found 12 hours ago
£420
Return
found 12 hours ago
Select WestJet flight, departing Mon, 8 Jun from St. Louis to Toronto, returning Sun, 14 Jun, priced at £420 found 12 hours ago

Frequently asked questions

How much does a flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) cost?
One-way flights typically cost between $596 and $2,267 and return flights often range between $1,392 and $3,409. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Anaa (AAA) to Toronto, ON (YYZ-Pearson Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
June is typically the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.), with average round-trip fares of approximately 1158 CAD. This is about 14% lower than the average price throughout the year. June can be cheaper as it's often before the peak summer travel season fully kicks in, offering a sweet spot for good weather and lower demand. Other cheap months to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) include January and May.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
Enter STL to YYZ and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
To find a cheap flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
The best airline to fly with from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) will differ from traveler to traveler. If you like to fly early, AC offers early morning flights. If price is the most important factor, UA typically offers the lowest fares. UA offers the most daily flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
Based on booking data from the past year, there isn't a single month that is both the cheapest and most popular for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.).If you're looking for the best value, May and June are typically the cheapest months to fly, with average round-trip flight prices around 1158 CAD. These months can be a great option if you're flexible with your travel dates.However, if you prefer to travel when there are plenty of flight options and higher demand, December and August are the most popular months. While these might not offer the lowest fares, you'll likely find a wider selection of flight times and carriers to choose from.*Prices based on flights available on Expedia in the last year.
How many flights per day from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
There are approximately 3 nonstop flights per day from Lambert-St. Louis Intl. (STL) to Pearson Intl. (YYZ). For even more choice, look at flights that include layovers. You'll find around 75 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and LaGuardia (LGA).
What is the earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
The earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) (STL) to Toronto, ON (YYZ-Pearson Intl.) (YYZ) typically departs at approximately 5:00 AM local time. This service is operated by American Airlines and is seasonal, active in November and December. An early departure like this can help you maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
You'll typically find the most flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) on a Friday, with around 58 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Delta Air Lines, United Airlines, and American Airlines. Friday offers notably more flight options compared to other days of the week.
What are the most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
The most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) are in the morning, from 6am to 9am. About 37% of passengers prefer this time. Many major carriers, including Delta, American Airlines and United, offer flights during this window. This timing works well because it allows you to get an early start on your travel day and arrive in Toronto with plenty of time to settle in.
How long does it take to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
Flying nonstop from STL to YYZ takes around 2 hours, with the route covering approximately 654 miles. Flights with a layover typically take 3 hours 30 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
Select the "Business class" and "First class" filters when looking for STL to YYZ flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How much is a business class flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
A non-stop, one-way business class flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) is usually around 1470 CAD - 1628 CAD. You may also be able to find a cheaper business class journey between St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Anaa (AAA) (AAA) to Toronto, ON (YYZ-Pearson Intl.) (YYZ) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) flight with Expedia?
It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Toronto from Lambert-St. Louis Intl. (STL)?
When traveling from Lambert-St. Louis Intl. (STL) to Toronto, you can fly into Billy Bishop Toronto City (YTZ) and Pearson Intl. (YYZ). Some flights may connect through major hubs like O'Hare Intl. (ORD), Washington Dulles Intl. (IAD), Liberty Intl. (EWR) before reaching Toronto. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) at the last minute?
Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) flight and hotel package?
Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
If you booked your St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Pearson Intl.
Airlines serving
Air Canada, American Airlines, Delta, United, WestJet
Return price
£374
Distance
1046 km
Average flight time
2 hours 54 mins

Book with confidence

Compare flights from St. Louis to Toronto easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from St. Louis to Toronto. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Pearson Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Lambert-St. Louis Intl. to Pearson Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Lambert-St. Louis Intl. (STL) to Pearson Intl. (YYZ)

The easiest way to view the best deals on flights from St. Louis to Toronto today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Lambert-St. Louis Intl. to Pearson Intl. start at just £374 and range up to £420.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near St. Louis and Toronto
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your St. Louis to Toronto flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Lambert-St. Louis Intl. to Pearson Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from St. Louis to Toronto easily and book with confidence

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*Available to Expedia members.