$122 Find Cheap Flights from St. Louis to Toronto - Compare and Save

Among airlines operating St. Louis to Toronto Pearson Intl Airport flights:

• Air Canada: offers free seat selection
• United Airlines: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only Air Canada operates flights between St. Louis and Toronto Pearson Intl Airport.

Flights from St. Louis to Toronto Pearson Intl Airport usually depart from Lambert-St Louis (STL) and arrive at Toronto Pearson Intl (YYZ).

Here are some options for this route, based on selected ticket types and cabin classes:

• Air Canada: a cabin bag and a checked bag in Economy Class
• United Airlines: a cabin bag and a checked bag in First Class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Two cabin classes are available on flights from St. Louis to Toronto Pearson Intl Airport:

• Economy Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $430 round-trip via Orlando (MCO), compared to $654 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$84 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Canadair (Bombardier) Regional Jet 900 family is used most often on this route, operated mainly by United Airlines and Air Canada. Other aircraft seen on the route include Embraer 175 variants.

One-stop flights from St. Louis to Toronto Pearson Intl Airport most commonly connect through:

• Chicago O'Hare Intl (ORD) - 56% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 27% of one-stop connections
• Washington, D.C. Reagan-National (DCA) - 8% of one-stop connections
• Charlotte Douglas (CLT) - 3% of one-stop connections

Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

On the St. Louis to Toronto Pearson Intl Airport route, being flexible with your departure day can save you up to 14%. Sunday is the cheapest day at $573 round-trip on average, while Friday is the most expensive at $665: a $92 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Afternoon is the busiest departure period on St. Louis to Toronto Pearson Intl Airport flights, with 100% of flights leaving in that window. Morning departures account for 0%, evening flights for 0%, and night flights for 0%.

Some of the most popular sights in Toronto Pearson Intl Airport are Rogers Centre, Union Station and Scotiabank Arena. These are among the most viewed places in Toronto Pearson Intl Airport on KAYAK.

These are the earliest and latest flight times available from St. Louis to Toronto Pearson Intl Airport:

• Earliest: departs at 8:55 am and lands at 10:51 am
• Latest: departs at 4:05 pm and lands at 6:01 pm.

The flight takes about 1h 56m.

Last-minute fares on this route - booked within 2 weeks of departure - run 63% above the route average of $643. Book 14 weeks before departure for the lowest fares.

A nonstop flight from St. Louis to Toronto Pearson Intl Airport takes 1h 56m, covering 653 miles.

Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $353 to $1,712. That means the highest observed fare was about 5x higher than the lowest one.

One-way fares from St. Louis to Toronto Pearson Intl Airport are currently lower than usual. Average one-way flight prices are about $220, which is 29% below the typical average for this route.

Flying via Detroit Metropolitan Wayne County (DTW) gives the shortest average 1-stop total travel time at 4h 05m, compared with 5h 01m via Atlanta Hartsfield-Jackson (ATL) and 5h 06m via Washington, D.C. Reagan-National (DCA).

Toronto Pearson Intl Airport is 1 hour ahead of St. Louis (Eastern Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Toronto Pearson Intl Airport (YYZ) hosts 5 major car rental companies, with daily rates starting from around $8 for economy cars. Top options include:
• Ace
• Routes Car & Truck Rentals
• City Car & Truck Rental
• Zoom Rent A Car
• Hertz

Round-trip flights from St. Louis to Toronto Pearson Intl Airport range from $546 to $739, with an average of $643 over the past 12 months. Anything below $546 counts as a good deal.

Air Canada is the only airline on the St. Louis to Toronto Pearson Intl Airport route offering in-flight Wi-Fi. Pricing depends on fare class.