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£239 Cheap Flights from St. Louis (STL) to Toronto (YYZ)

View £239 flight on Sun, 27 Sept 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 £239 for one-way flights and £466 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

WestJet
Fri, 18 Sept - Mon, 21 Sept
STL
St. Louis
YYZ
Toronto
£466 Return, found 4 days ago
£466
Return
found 4 days ago
Select WestJet flight, departing Fri, 18 Sept from St. Louis to Toronto, returning Mon, 21 Sept, priced at £466 found 4 days ago
Air Canada
Fri, 23 Oct - Sun, 1 Nov
STL
St. Louis
YYZ
Toronto
£470 Return, found 4 days ago
£470
Return
found 4 days ago
Select Air Canada flight, departing Fri, 23 Oct from St. Louis to Toronto, returning Sun, 1 Nov, priced at £470 found 4 days ago
Air Canada
Thu, 10 Sept - Thu, 17 Sept
STL
St. Louis
YYZ
Toronto
£470 Return, found 1 day ago
£470
Return
found 1 day ago
Select Air Canada flight, departing Thu, 10 Sept from St. Louis to Toronto, returning Thu, 17 Sept, priced at £470 found 1 day ago
Air Canada
Fri, 23 Oct - Sun, 1 Nov
STL
St. Louis
YYZ
Toronto
£472 Return, found 4 days ago
£472
Return
found 4 days ago
Select Air Canada flight, departing Fri, 23 Oct from St. Louis to Toronto, returning Sun, 1 Nov, priced at £472 found 4 days ago
WestJet
Sat, 26 Sept - Sat, 3 Oct
STL
St. Louis
YYZ
Toronto
£487 Return, found 5 days ago
£487
Return
found 5 days ago
Select WestJet flight, departing Sat, 26 Sept from St. Louis to Toronto, returning Sat, 3 Oct, priced at £487 found 5 days ago
WestJet
Thu, 10 Sept - Thu, 17 Sept
STL
St. Louis
YYZ
Toronto
£490 Return, found 1 day ago
£490
Return
found 1 day ago
Select WestJet flight, departing Thu, 10 Sept from St. Louis to Toronto, returning Thu, 17 Sept, priced at £490 found 1 day ago
Air Canada
Sat, 26 Sept - Sat, 3 Oct
STL
St. Louis
YYZ
Toronto
£493 Return, found 5 days ago
£493
Return
found 5 days ago
Select Air Canada flight, departing Sat, 26 Sept from St. Louis to Toronto, returning Sat, 3 Oct, priced at £493 found 5 days ago
WestJet
Fri, 23 Oct - Sun, 1 Nov
STL
St. Louis
YYZ
Toronto
£494 Return, found 4 days ago
£494
Return
found 4 days ago
Select WestJet flight, departing Fri, 23 Oct from St. Louis to Toronto, returning Sun, 1 Nov, priced at £494 found 4 days ago
WestJet
Thu, 10 Sept - Thu, 17 Sept
STL
St. Louis
YYZ
Toronto
£499 Return, found 1 day ago
£499
Return
found 1 day ago
Select WestJet flight, departing Thu, 10 Sept from St. Louis to Toronto, returning Thu, 17 Sept, priced at £499 found 1 day ago
WestJet
Fri, 18 Sept - Mon, 21 Sept
STL
St. Louis
YYZ
Toronto
£502 Return, found 4 days ago
£502
Return
found 4 days ago
Select WestJet flight, departing Fri, 18 Sept from St. Louis to Toronto, returning Mon, 21 Sept, priced at £502 found 4 days ago

Find the cheapest month to fly from St. Louis (STL) to Toronto (YYZ)

September is typically the cheapest month to fly

From £255 - £583 per traveller.

Frequently asked questions

How much does a flight from St. Louis, MO (STL) to Toronto, ON (YYZ) cost?
You can find one-way and return flights from St. Louis, MO (STL) to Toronto, ON (YYZ) with Expedia. 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 our cheapest fares first, and use the Price Tracking tool to receive alerts when STL to YYZ ticket fares go up or down.
What is the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
If you're looking for the cheapest time to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.), June is typically your best bet! You can expect average return flights to be around £356 during this month. June often offers lower prices as it's just before the peak summer travel season, making it a great time to find a deal. Other budget-friendly months to consider for this route include January and May.
Which airlines fly direct from St. Louis, MO (STL) to Toronto, ON (YYZ)?
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) to Toronto, ON (YYZ)?
To find a cheap flight from St. Louis, MO (STL) to Toronto, ON (YYZ), 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, Air Canada offers early morning flights. If price is the most important factor, United typically offers the lowest fares. United 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.)?
The cheapest months to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.) are typically May and June, with average return flights around £356. The most popular months for this route are July and November, meaning you'll find plenty of flight options during these times. While there isn't a single month that is both the cheapest and most popular, you can balance cost and availability by considering May or June for better prices, or July and November for more flight choices.
How many flights per day from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
You'll find around 3 nonstop flights per day from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.). For even more choices, look at flights that include layovers, as there are approximately 75 connecting flights per day. Some common connection points include O'Hare Intl., Hartsfield-Jackson Atlanta Intl., and LaGuardia.
What is the earliest flight from St. Louis, MO (STL) to Toronto, ON (YYZ)?
Sort flights by "Departure (earliest)" on Expedia to find the earliest flight from St. Louis, MO (STL) to Toronto, ON (YYZ). To compare more early flights, use 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 61 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Delta, United, and American Airlines. Flight options are notably more plentiful on Fridays compared to other days of the week, offering you greater flexibility.
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 early morning, from 6am to 9am. Many major carriers, including Delta, American Airlines and Air Canada, offer flights during this window. Many travellers prefer this because it allows for an early arrival at your destination, giving you more time to settle in or start your day in Toronto.
How long does it take to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Toronto, ON (YYZ-Pearson Intl.)?
Direct flights from STL to YYZ usually take about 2 hours, traveling roughly 1,053 kilometers. If you opt for a connecting flight, expect to add around 3 hours to your journey. 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.)?
Yes, you can fly business class or first class between STL and YYZ. Airlines that offer business class service on this route include:
  • Air Canada
  • United
  • Delta
  • American Airlines
First class cabins are available on Air Canada, United, and Delta.
How do I earn miles on a St. Louis, MO (STL) to Toronto, ON (YYZ) flight with Expedia?
It's easy to earn miles on a St. Louis, MO (STL) to Toronto, ON (YYZ) 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.
Is it cheaper to buy a plane ticket from St. Louis, MO (STL) to Toronto, ON (YYZ) at the last minute?
Typically, booking a last minute flight from St. Louis, MO (STL) to Toronto, ON (YYZ) 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) to Toronto, ON (YYZ) flight and hotel package?
Securing a St. Louis, MO (STL) to Toronto, ON (YYZ) 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.
Roundtrip price
£465
Distance
1046 km
Average flight time
4 hours 9 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 £466 and range up to £502.  

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 September, 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.