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Cheap flights from St. Louis to Toronto Pearson Intl Airport from $140

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Toronto Pearson Intl Airport departing on 4/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Toronto

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from St. Louis to Toronto.
10:10 am - 9:00 pmSTL-YYZ
9h 50m1 stop
4:00 pm - 6:41 pmYYZ-STL
27h 41m2 stops
Thu, May 8 - Mon, May 12
9:50 am - 9:08 pmSTL-YYZ
10h 18m2 stops
4:00 pm - 12:06 amYYZ-STL
9h 06m1 stop
Tue, May 6 - Wed, May 7
6:00 am - 4:10 pmSTL-YYZ
9h 10m1 stop
10:20 am - 6:02 pmYYZ-STL
8h 42m1 stop
$386Delta
Find Deal
Thu, May 8 - Mon, May 12
6:00 am - 2:30 pmSTL-YYZ
7h 30m1 stop
6:30 am - 3:21 pmYYZ-STL
9h 51m1 stop
$434American Airlines
Find Deal
Tue, May 6 - Wed, May 7
7:32 am - 6:35 pmSTL-YYZ
10h 03m1 stop
1:20 pm - 11:54 pmYYZ-STL
11h 34m1 stop
$441American Airlines
Find Deal
Tue, Jun 3 - Tue, Jun 10
6:00 am - 4:10 pmSTL-YYZ
9h 10m1 stop
6:10 pm - 11:38 pmYYZ-STL
6h 28m1 stop
$447Delta
Find Deal
Wed, May 21 - Sun, May 25
6:30 am - 11:49 amSTL-YYZ
4h 19m1 stop
1:40 pm - 2:49 pmYYZ-STL
2h 09mnonstop
$475Air Canada
Find Deal
Thu, Apr 24 - Wed, Apr 30
5:35 pm - 3:46 pmSTL-YYZ
21h 11m1 stop
7:00 am - 2:42 pmYYZ-STL
8h 42m1 stop
$487United Airlines
Find Deal
Tue, Apr 22 - Thu, Apr 24
9:15 am - 12:13 pmSTL-YYZ
1h 58mnonstop
2:15 pm - 3:21 pmYYZ-STL
2h 06mnonstop
$488United Airlines
Find Deal
Sat, Aug 2 - Fri, Aug 8
1:30 pm - 9:39 pmSTL-YYZ
7h 09m1 stop
11:30 am - 12:36 pmYYZ-STL
2h 06mnonstop
$494Air Canada
Find Deal
Sun, May 25 - Sat, May 31

Delta flights from St. Louis to Toronto Pearson Intl Airport

Our best Delta deals on St. Louis to Toronto Pearson Intl Airport flight tickets
Delta
May 8
STL6:00 amLambert-St Louis
9h 10m
1 stop
YYZ4:10 pmToronto Pearson Intl
May 12
YYZ10:20 amToronto Pearson Intl
8h 42m
1 stop
STL6:02 pmLambert-St Louis
Delta
May 21
STL6:00 amLambert-St Louis
9h 10m
1 stop
YYZ4:10 pmToronto Pearson Intl
May 25
YYZ6:10 pmToronto Pearson Intl
6h 28m
1 stop
STL11:38 pmLambert-St Louis
Delta
Apr 20
STL6:50 amLambert-St Louis
3h 35m
1 stop
YYZ11:25 amToronto Pearson Intl
Apr 24
YYZ7:55 amToronto Pearson Intl
11h 23m
1 stop
STL6:18 pmLambert-St Louis

American Airlines flights from St. Louis to Toronto Pearson Intl Airport

Our best American Airlines deals on St. Louis to Toronto Pearson Intl Airport flight tickets
American Airlines
May 6
STL6:00 amLambert-St Louis
7h 30m
1 stop
YYZ2:30 pmToronto Pearson Intl
May 7
YYZ6:30 amToronto Pearson Intl
9h 51m
1 stop
STL3:21 pmLambert-St Louis
American Airlines
Jun 3
STL7:32 amLambert-St Louis
10h 03m
1 stop
YYZ6:35 pmToronto Pearson Intl
Jun 10
YYZ1:20 pmToronto Pearson Intl
11h 34m
1 stop
STL11:54 pmLambert-St Louis
American Airlines
May 29
STL12:03 pmLambert-St Louis
8h 27m
1 stop
YYZ9:30 pmToronto Pearson Intl
Jun 1
YYZ6:00 amToronto Pearson Intl
7h 52m
1 stop
STL12:52 pmLambert-St Louis

See travel insights to Toronto from

How to get the cheapest flight ticket from St. Louis to Toronto Pearson Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Toronto Pearson Intl Airport?

What is the cheapest month to fly to Toronto Pearson Intl Airport?

The cheapest month to fly to Toronto Pearson Intl Airport from St. Louis is in May. Flight prices, which tend to average around $259, are often lower during this time because this is during the off-season. If you don’t want to visit Toronto Pearson Intl Airport in May, then you should wait until January to fly from St. Louis, when ticket prices are also cheap, with an average price of $285.

What is the cheapest day to depart on your flight to Toronto Pearson Intl Airport?

The cheapest day to depart from St. Louis to Toronto Pearson Intl Airport is on a Thursday when prices can be found for as low as $897. The most expensive day to fly to Toronto Pearson Intl Airport is Wednesday, with ticket prices averaging around $1,049.

What is the cheapest time of day to depart on your flight to Toronto Pearson Intl Airport?

Flying to Toronto Pearson Intl Airport from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $981 when looking at flights departing in the afternoon. Flights at noon are often more expensive with an average ticket price of $1,121.

What is the cheapest Lambert-St Louis to Toronto Pearson Intl flight route?

Fly from Lambert-St Louis to Toronto Pearson Intl for the best Lambert-St Louis - Toronto Pearson Intl flight prices

How far in advance should I book a flight to Toronto Pearson Intl Airport?

You are more likely to see cheaper flights to Toronto Pearson Intl Airport from St. Louis when booking 24 weeks ahead of your departure date. In general, you can expect to find flights to Toronto Pearson Intl Airport for around $455 when searching 24 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto Pearson Intl Airport from St. Louis for as low as $214 on momondo.

What cabin class options are available on Lambert-St Louis to Toronto Pearson Intl flights?

There are 4 cabin classes available to choose from on Lambert-St Louis to Toronto Pearson Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have St. Louis to Toronto Pearson Intl Airport flight prices changed over time?

As of March 2025, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 1% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Toronto Pearson Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Toronto Pearson Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Toronto Pearson Intl Airport (STL to YYZ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Toronto Pearson Intl Airport

Best Price Found

$140

Fastest flight time

1h 55m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from St. Louis in the past 72 hours is $140. The best round-trip flight deal from St. Louis to Toronto Pearson Intl Airport found on momondo in the last 72 hours is $315.
The fastest flight from St. Louis to Toronto Pearson Intl Airport takes 1h 55m
Direct flights go from St. Louis to Toronto Pearson Intl Airport every day.

  • How far is Lambert-St Louis to Toronto Pearson Intl by plane?

    A flight from Lambert-St Louis to Toronto Pearson Intl will travel around 650.6 mi. In terms of flight time, this usually takes a little over 1h 55m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Toronto Pearson Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Toronto Pearson Intl Airport.

  • What documentation or ID do you need to fly to Toronto Pearson Intl Airport?

    The required travel and health documents for your Toronto Pearson Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Toronto Pearson Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from St. Louis to Toronto Pearson Intl Airport?

  • What is the most popular airline from St. Louis to Toronto Pearson Intl Airport?


Best airlines flying from St. Louis to Toronto Pearson Intl Airport

Compare and see reviews for airlines that fly from St. Louis to Toronto Pearson Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $223Free CancellationRating
7.0
8,973 reviews
Search Air Canada flights
United AirlinesPriceFrom $237Free CancellationRating
7.4
8,603 reviews
Search United Airlines flights
American AirlinesPriceFrom $304Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • United Airlines Flights From St. Louis to Toronto Pearson Intl Airport

    United Airlines operates around 6 flights from St. Louis to Toronto Pearson Intl Airport every week. The average price of these flights found in the last 72 hours has been $537, but momondo users have found United Airlines deals from St. Louis to Toronto Pearson Intl Airport from as low as $237 round-trip. United Airlines has been scored 7.4/10 in 8,603 reviews.

  • Air Canada Flights From St. Louis to Toronto Pearson Intl Airport

    Air Canada (7.0/10 from 8,981 reviews) operates around 3 flights from St. Louis to Toronto Pearson Intl Airport in any given week. The average Air Canada airfare for this route is around $502, with deals from around $223 rare but found on momondo. Referenced prices are for round-trip St. Louis to Toronto Pearson Intl Airport flight searches in the last 72 hours.


Traveling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Niagara Falls
Mississauga
Brampton
Niagara-on-the-Lake
Vaughan
Markham
Oakville
Burlington
Richmond Hill
Kitchener
St. Catharines
Barrie
Cambridge
Oshawa
Pickering
Guelph
Milton
Stratford
Brantford
Waterloo

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Toronto?

Finding the right flight to Toronto from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Toronto quick and easy, saving you time and money.

Can I find flights from St. Louis to Toronto with flexible booking policies on momondo?

All flight searches from St. Louis to Toronto on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from St. Louis to Toronto?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Toronto from St. Louis.

I’m not ready to book a flight from St. Louis to Toronto right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Toronto, momondo offers a useful price alert feature which will track prices for flights to Toronto from St. Louis and alert you when they change.


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