£108 Cheap Flights from St. Louis (STL) to Toronto (YYZ)

View £108 flight on Sat, 18 Oct 2025Opens 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 £108 for one-way flights and £418 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, 17 Sep - Wed, 24 Sep
STL
St. Louis
YYZ
Toronto
£418 Return, found 3 days ago
£418
Return
found 3 days ago
Select Air Canada flight, departing Wed, 17 Sep from St. Louis to Toronto, returning Wed, 24 Sep, priced at £418 found 3 days ago
WestJet
Fri, 12 Sep - Fri, 19 Sep
STL
St. Louis
YYZ
Toronto
£425 Return, found 3 days ago
£425
Return
found 3 days ago
Select WestJet flight, departing Fri, 12 Sep from St. Louis to Toronto, returning Fri, 19 Sep, priced at £425 found 3 days ago
Air Canada
Mon, 15 Sep - Mon, 22 Sep
STL
St. Louis
YYZ
Toronto
£429 Return, found 3 days ago
£429
Return
found 3 days ago
Select Air Canada flight, departing Mon, 15 Sep from St. Louis to Toronto, returning Mon, 22 Sep, priced at £429 found 3 days ago
Air Canada
Wed, 17 Sep - Wed, 24 Sep
STL
St. Louis
YYZ
Toronto
£432 Return, found 3 days ago
£432
Return
found 3 days ago
Select Air Canada flight, departing Wed, 17 Sep from St. Louis to Toronto, returning Wed, 24 Sep, priced at £432 found 3 days ago
Air Canada
Wed, 17 Sep - Wed, 24 Sep
STL
St. Louis
YYZ
Toronto
£433 Return, found 3 days ago
£433
Return
found 3 days ago
Select Air Canada flight, departing Wed, 17 Sep from St. Louis to Toronto, returning Wed, 24 Sep, priced at £433 found 3 days ago
Air Canada
Mon, 15 Sep - Mon, 22 Sep
STL
St. Louis
YYZ
Toronto
£439 Return, found 3 days ago
£439
Return
found 3 days ago
Select Air Canada flight, departing Mon, 15 Sep from St. Louis to Toronto, returning Mon, 22 Sep, priced at £439 found 3 days ago
WestJet
Thu, 18 Dec - Tue, 30 Dec
STL
St. Louis
YYZ
Toronto
£441 Return, found 2 days ago
£441
Return
found 2 days ago
Select WestJet flight, departing Thu, 18 Dec from St. Louis to Toronto, returning Tue, 30 Dec, priced at £441 found 2 days ago
Air Canada
Sun, 14 Sep - Sun, 21 Sep
STL
St. Louis
YYZ
Toronto
£443 Return, found 3 days ago
£443
Return
found 3 days ago
Select Air Canada flight, departing Sun, 14 Sep from St. Louis to Toronto, returning Sun, 21 Sep, priced at £443 found 3 days ago
Air Canada
Mon, 15 Sep - Mon, 22 Sep
STL
St. Louis
YYZ
Toronto
£448 Return, found 3 days ago
£448
Return
found 3 days ago
Select Air Canada flight, departing Mon, 15 Sep from St. Louis to Toronto, returning Mon, 22 Sep, priced at £448 found 3 days ago
WestJet
Fri, 12 Sep - Fri, 19 Sep
STL
St. Louis
YYZ
Toronto
£450 Return, found 3 days ago
£450
Return
found 3 days ago
Select WestJet flight, departing Fri, 12 Sep from St. Louis to Toronto, returning Fri, 19 Sep, priced at £450 found 3 days ago

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

October is typically the cheapest month to fly

From £265 - £532 per traveller.

Graph displaying average flight prices per month

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Flight from St. Louis to Toronto route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Pearson Intl.
Return price
£417
Distance
1046 km

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 £418 and range up to £450.  

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.  

Frequently asked questions

How much is a flight from Lambert Field to Pearson Intl. Airport (YYZ)?
The lowest price advertised for a round-trip journey from Lambert-St. Louis Intl. Airport (STL) to Pearson Intl. Airport (YYZ) is £418. But you better move fast. This price is taken from fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from St. Louis Lambert International Airport to Toronto Pearson Airport?
Most flights can be cancelled online, but each airline has its own terms and conditions. If you do have to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from Lambert-St. Louis Intl. Airport (STL) to Toronton Pearson that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Lambert Field to Toronton Pearson flights, you'll see a "no change fees" filter for you to select.
How far is the flight from STL to Toronto Pearson Airport?
With a flight distance of 1,050 kilometres, it's only a short hop from St. Louis Lambert International Airport to Pearson Intl. Airport (YYZ). It might be a quick flight, but it's still worth packing a book to read.
Which airlines fly direct from Lambert Field to Toronton Pearson?
Offering 30 monthly flights, Air Canada (AC) is a great choice when flying straight from Lambert Field to YYZ.
Are STL to Pearson Intl. Airport (YYZ) flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes nab a bargain, with some of the cheapest airfares from Lambert Field to Toronto Pearson Airport showing up a few weeks before the departure date. If you'd rather plan ahead, Expedia compares and updates all the best flight deals continuously — as early as 12 months in advance in some cases. It depends on the carrier though, as not all airlines issue prices that far in advance.

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