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Cheap flights from St. Louis to Toronto from C$ 139

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 departing on 4/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:11 p.m. - 12:11 a.m.
STL
-
YYZ
30h 00m1 stop
Multiple Airlines Logo
3:40 p.m. - 6:51 a.m.
YYZ
-
STL
16h 11m2 stops
C$ 359Multiple Airlines
Sun, 18 Jan - Tue, 20 Jan
Multiple Airlines Logo
6:41 p.m. - 6:20 a.m.
STL
-
YYZ
10h 39m1 stop
Multiple Airlines Logo
8:20 p.m. - 12:27 a.m.
YYZ
-
STL
29h 07m1 stop
C$ 390Multiple Airlines
Sat, 14 Feb - Thu, 19 Feb
Multiple Airlines Logo
5:42 p.m. - 11:46 a.m.
STL
-
YYZ
17h 04m1 stop
Multiple Airlines Logo
7:10 a.m. - 11:33 p.m.
YYZ
-
STL
17h 23m1 stop
C$ 406Multiple Airlines
Sat, 24 Jan - Mon, 26 Jan
Multiple Airlines Logo
1:59 p.m. - 6:43 a.m.
STL
-
YYZ
15h 44m2 stops
Multiple Airlines Logo
7:10 a.m. - 10:27 p.m.
YYZ
-
STL
16h 17m1 stop
C$ 410Multiple Airlines
Fri, 20 Feb - Wed, 25 Feb
Multiple Airlines Logo
5:42 p.m. - 11:46 a.m.
STL
-
YYZ
17h 04m1 stop
Multiple Airlines Logo
7:15 a.m. - 11:33 p.m.
YYZ
-
STL
17h 18m2 stops
C$ 420Multiple Airlines
Sat, 24 Jan - Mon, 26 Jan
Multiple Airlines Logo
10:11 p.m. - 1:40 p.m.
STL
-
YYZ
38h 29m2 stops
Multiple Airlines Logo
5:15 p.m. - 11:59 p.m.
YYZ
-
STL
7h 44m1 stop
C$ 453Multiple Airlines
Fri, 13 Feb - Thu, 19 Feb
Multiple Airlines Logo
8:32 p.m. - 11:20 p.m.
STL
-
YYZ
49h 48m2 stops
Multiple Airlines Logo
7:10 a.m. - 11:33 p.m.
YYZ
-
STL
17h 23m1 stop
C$ 456Multiple Airlines
Sat, 17 Jan - Sat, 24 Jan
Multiple Airlines Logo
9:50 a.m. - 9:09 p.m.
STL
-
YYZ
10h 19m2 stops
Multiple Airlines Logo
8:00 p.m. - 9:13 p.m.
YYZ
-
STL
26h 13m1 stop
C$ 458Multiple Airlines
Thu, 26 Feb - Sun, 1 Mar
Multiple Airlines Logo
5:11 p.m. - 2:16 p.m.
STL
-
YYZ
20h 05m1 stop
Multiple Airlines Logo
7:15 a.m. - 11:33 p.m.
YYZ
-
STL
17h 18m1 stop
C$ 463Multiple Airlines
Sun, 18 Jan - Tue, 20 Jan
Multiple Airlines Logo
3:49 p.m. - 2:20 p.m.
STL
-
YYZ
21h 31m1 stop
Multiple Airlines Logo
8:20 p.m. - 12:27 a.m.
YYZ
-
STL
29h 07m1 stop
C$ 479Multiple Airlines
Fri, 13 Feb - Thu, 19 Feb

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
14 Feb
STL6:35 p.m.Lambert-St Louis
15h 21m
1 stop
YYZ10:56 a.m.Toronto Pearson Intl
21 Feb
YYZ11:38 a.m.Toronto Pearson Intl
7h 24m
1 stop
STL6:02 p.m.Lambert-St Louis
C$ 489
Find similar
American Airlines
5 Feb
STL6:00 a.m.Lambert-St Louis
11h 20m
1 stop
YYZ6:20 p.m.Toronto Pearson Intl
12 Feb
YYZ4:43 p.m.Toronto Pearson Intl
7h 45m
1 stop
STL11:28 p.m.Lambert-St Louis
C$ 588
Find similar
American Airlines
12 Feb
STL9:13 a.m.Lambert-St Louis
12h 31m
1 stop
YYZ10:44 p.m.Toronto Pearson Intl
14 Feb
YYZ6:29 p.m.Toronto Pearson Intl
16h 05m
1 stop
STL9:34 a.m.Lambert-St Louis
C$ 691
Find similar

Air Canada flights from St. Louis to Toronto Pearson Intl Airport

Our best Air Canada deals on St. Louis to Toronto Pearson Intl Airport flight tickets
Air Canada
14 Feb
STL4:05 p.m.Lambert-St Louis
2h 01m
YYZ7:06 p.m.Toronto Pearson Intl
21 Feb
YYZ2:00 p.m.Toronto Pearson Intl
2h 29m
STL3:29 p.m.Lambert-St Louis
C$ 661
Find similar
Air Canada
12 Feb
STL4:05 p.m.Lambert-St Louis
2h 01m
YYZ7:06 p.m.Toronto Pearson Intl
14 Feb
YYZ2:00 p.m.Toronto Pearson Intl
2h 29m
STL3:29 p.m.Lambert-St Louis
C$ 709
Find similar
Air Canada
25 Mar
STL4:05 p.m.Lambert-St Louis
2h 01m
YYZ7:06 p.m.Toronto Pearson Intl
1 Apr
YYZ2:10 p.m.Toronto Pearson Intl
2h 14m
STL3:24 p.m.Lambert-St Louis
C$ 719
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Toronto Pearson Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 23 December 2025.
Use the filters below to find and compare flights from St. Louis to Toronto Pearson Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 18/1

5:11 p.m.-12:11 a.m.

1 stop30h 00m

Toronto Pearson Intl

Tue 20/1

3:40 p.m.-6:51 a.m.

2 stops16h 11m

C$ 359

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 14/2

6:41 p.m.-6:20 a.m.

1 stop10h 39m

Toronto Pearson Intl

Thu 19/2

8:20 p.m.-12:27 a.m.

1 stop29h 07m

C$ 390

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 24/1

5:42 p.m.-11:46 a.m.

1 stop17h 04m

Toronto Pearson Intl

Mon 26/1

7:10 a.m.-11:33 p.m.

1 stop17h 23m

C$ 406

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 20/2

1:59 p.m.-6:43 a.m.

2 stops15h 44m

Toronto Pearson Intl

Wed 25/2

7:10 a.m.-10:27 p.m.

1 stop16h 17m

C$ 410

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 24/1

5:42 p.m.-11:46 a.m.

1 stop17h 04m

Toronto Pearson Intl

Mon 26/1

7:15 a.m.-11:33 p.m.

2 stops17h 18m

C$ 420

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 13/2

10:11 p.m.-1:40 p.m.

2 stops38h 29m

Toronto Pearson Intl

Thu 19/2

5:15 p.m.-11:59 p.m.

1 stop7h 44m

C$ 453

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 17/1

8:32 p.m.-11:20 p.m.

2 stops49h 48m

Toronto Pearson Intl

Sat 24/1

7:10 a.m.-11:33 p.m.

1 stop17h 23m

C$ 456

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 26/2

9:50 a.m.-9:09 p.m.

2 stops10h 19m

Toronto Pearson Intl

Sun 1/3

8:00 p.m.-9:13 p.m.

1 stop26h 13m

C$ 458

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 18/1

5:11 p.m.-2:16 p.m.

1 stop20h 05m

Toronto Pearson Intl

Tue 20/1

7:15 a.m.-11:33 p.m.

1 stop17h 18m

C$ 463

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 13/2

3:49 p.m.-2:20 p.m.

1 stop21h 31m

Toronto Pearson Intl

Thu 19/2

8:20 p.m.-12:27 a.m.

1 stop29h 07m

C$ 479

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

If you aren’t able to travel during the month of May, then book flights to Toronto Pearson Intl Airport from St. Louis during July instead. Flights to Toronto Pearson Intl Airport in July, while not as cheap as those in May, still average around C$ 599.

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

Our data shows that Friday is the least expensive day to fly to Toronto Pearson Intl Airport. Tickets to fly out on this day can be as low as C$ 578. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Toronto Pearson Intl Airport for around C$ 896.

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

Our data shows that the cheapest St. Louis to Toronto Pearson Intl Airport flights are usually those with departure times at noon. Our users have found flights to Toronto Pearson Intl Airport at noon for as low as C$ 590. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 764 on average. Flights to Toronto Pearson Intl Airport from St. Louis in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 weeks ahead of your departure date. In general, you can expect to find flights to Toronto Pearson Intl Airport for around C$ 699 when searching 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 C$ 304 on momondo.

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

There is only 1 cabin class 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.

Can stopping save me money on St. Louis to Toronto Pearson Intl Airport flights?

You could potentially save up to 10% on your flight if you consider stops on a St. Louis to Toronto Pearson Intl Airport flight.

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

As of December 2025, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 5% 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

Fastest flight time

1h 51m

Direct flights

Every day
The fastest flight from St. Louis to Toronto Pearson Intl Airport takes 1h 51m
Direct flights go from St. Louis to Toronto Pearson Intl Airport every day.
Search flight deals

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

    Lambert-St Louis and Toronto Pearson Intl are 1047.0 km apart from one another. By plane, this route typically takes 1h 51m.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify 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 necessary travel and health documents for your Toronto Pearson Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted 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 C$ 300Free CancellationRating
7.1
10,551 reviews
Search Air Canada flights

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

    Air Canada operates around 7 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 C$ 642, but momondo users have found Air Canada deals from St. Louis to Toronto Pearson Intl Airport from as low as C$ 300 round-trip. Air Canada has been scored 7.1/10 in 10,551 reviews.

Travelling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Niagara Falls
Mississauga
Brampton
Collingwood
Oshawa
Guelph
Muskoka
Markham
Barrie
Vaughan
Niagara-on-the-Lake
Kitchener
Burlington
Orillia
Brantford
Cambridge
Peterborough
Pickering
Oakville
Gravenhurst

Why use momondo?

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

It is quick and easy to find St. Louis to Toronto flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Toronto that suits you.

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

Yes. momondo enables you to select and highlight flights to Toronto from St. Louis with this policy.

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

Once you have performed a search for St. Louis to Toronto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for St. Louis to Toronto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Toronto Pearson Intl Airport trip

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