$110 Cheap Flights from St. Louis (STL) to Toronto (YYZ)

View $110 flight on Tue, Mar 3, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $110 for one-way flights and $316 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, Jan 8 - Mon, Jan 12
STL
St. Louis
YYZ
Toronto
$316 Roundtrip, found 6 days ago
$316
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Jan 8 from St. Louis to Toronto, returning Mon, Jan 12, priced at $316 found 6 days ago
United
Sat, Jan 17 - Tue, Jan 20
STL
St. Louis
YYZ
Toronto
$335 Roundtrip, found 3 days ago
$335
Roundtrip
found 3 days ago
Select United flight, departing Sat, Jan 17 from St. Louis to Toronto, returning Tue, Jan 20, priced at $335 found 3 days ago
American Airlines
Tue, Dec 16 - Sat, Jan 17
STL
St. Louis
YYZ
Toronto
$335 Roundtrip, found 7 hours ago
$335
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, Dec 16 from St. Louis to Toronto, returning Sat, Jan 17, priced at $335 found 7 hours ago
American Airlines
Wed, Feb 18 - Thu, Feb 19
STL
St. Louis
YYZ
Toronto
$349 Roundtrip, found 2 days ago
$349
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Feb 18 from St. Louis to Toronto, returning Thu, Feb 19, priced at $349 found 2 days ago
American Airlines
Tue, Dec 16 - Mon, Jan 19
STL
St. Louis
YYZ
Toronto
$351 Roundtrip, found 7 hours ago
$351
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Tue, Dec 16 from St. Louis to Toronto, returning Mon, Jan 19, priced at $351 found 7 hours ago
American Airlines
Tue, Feb 17 - Wed, Feb 18
STL
St. Louis
YYZ
Toronto
$358 Roundtrip, found 2 days ago
$358
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Feb 17 from St. Louis to Toronto, returning Wed, Feb 18, priced at $358 found 2 days ago
United
Sat, Jan 17 - Tue, Jan 20
STL
St. Louis
YYZ
Toronto
$365 Roundtrip, found 3 days ago
$365
Roundtrip
found 3 days ago
Select United flight, departing Sat, Jan 17 from St. Louis to Toronto, returning Tue, Jan 20, priced at $365 found 3 days ago
Air Canada
Tue, Dec 23 - Thu, Jan 1
STL
St. Louis
YYZ
Toronto
$368 Roundtrip, found 6 hours ago
$368
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Tue, Dec 23 from St. Louis to Toronto, returning Thu, Jan 1, priced at $368 found 6 hours ago
Delta
Fri, Dec 5 - Thu, Dec 11
STL
St. Louis
YYZ
Toronto
$393 Roundtrip, found 5 days ago
$393
Roundtrip
found 5 days ago
Select Delta flight, departing Fri, Dec 5 from St. Louis to Toronto, returning Thu, Dec 11, priced at $393 found 5 days ago
Alaska Airlines
Tue, Mar 3 - Tue, Mar 10
STL
St. Louis
YYZ
Toronto
$462 Roundtrip, found 3 days ago
$462
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Tue, Mar 3 from St. Louis to Toronto, returning Tue, Mar 10, priced at $462 found 3 days ago

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

September is typically the cheapest month to fly

From $341 - $710 per traveler.

Alternative airports near Toronto

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Pearson Intl. YYZ. Cheapest option available. Average driving time to city center is 22 minutes. Flights from $473
YYZ
Pearson Intl.
Cheapest
Average driving time to city center22 min
Flights from $473

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ) cost?
Secure a cheap one-way flight from $110 or cheap return flight from $316 from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ)?
The cheapest month to fly from STL to YYZ is January, when demand is low. Off-peak season is often when airlines offer lower prices between these airports.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ)?
Take a direct flight with Air Canada and fly straight from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ).
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ)?
To find the cheapest airline flying from STL to YYZ, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and flight duration. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ)?
On average, just 1 direct flight departs each day from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ). Want additional options? Use our filter tool to discover flights with layovers and explore a new city along the way.
What are the most popular departure times for flights from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ)?
More travelers fly between STL and YYZ at 3 PM than at any other point in the day. Prefer a quieter experience? Pick a flight outside the busiest times and there's a chance you'll save on your fare as well.
What day of the week has the most flights from STL to YYZ?
If you jet off on a Friday, you'll get the biggest range of options for flights from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ).
What is the earliest flight from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ)?
Take the earliest flight at around 3:50PM UTC-6, departing from Lambert-St. Louis Intl. Airport (STL). You'll be flying for roughly 1h 55m, arriving at Pearson Intl. Airport (YYZ) at approximately 6:45PM UTC-5.
How long does it take to fly from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ)?
It takes around 1 hour and 55 minutes to travel the 650 mi from STL to YYZ.
What airline has the least delays from STL to YYZ?
Air Canada has the best performance for on-time direct flights from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ), with an on-time score of 85%. Use the Expedia App to look up your flight status before you take off and get notified of any trip changes.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ) route, aim to fly before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Toronto from Lambert-St. Louis Intl. Airport (STL)?
Explore your flight options from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ). This is the only Toronto airport you can land at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ) last-minute?
Booking your ticket from STL to YYZ shortly before your trip is usually more expensive. But if you're flexible with your departure times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a STL to YYZ flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to YYZ flight and hotel package with Expedia could result in significant savings. Better still, having everything in one easy place will take the stress out of planning your trip. Just pick your flights and choose from our wide range of stays, then tailor your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ)?
Typically, you can cancel or reschedule your STL to YYZ flight. However, additional fees may apply, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's fees and rules on flight changes, or if you'd like more information, go to our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Pearson Intl.
Airlines serving
Air Canada, Alaska Airlines, American Airlines, Delta, United, WestJet
Roundtrip price
$315
Distance
654 mi
Average flight time
2 hours 1 min

Book with confidence

St. Louis to Toronto Flights

The cheapest times to fly from St. Louis to Toronto

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Toronto are during the month of January. You can find some of the cheapest flights from St. Louis to Toronto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Toronto

Sunday is one of the best days to book for cheap flights from St. Louis to Toronto: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Toronto

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Toronto in 2025. You can also book with separate airlines for your outbound and return journeys, from $110 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Toronto flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Toronto airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

St. Louis to Toronto Flights

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*Available to One Key members.