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Cheap flights from St. Louis to Toronto from C$ 221

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 10/6. 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.
American Airlines Logo
6:35 a.m. - 5:44 p.m.
STL
-
YYZ
10h 09m
1 stop
American Airlines Logo
3:13 p.m. - 12:16 a.m.
YYZ
-
STL
10h 03m
1 stop
C$ 533American Airlines
Tue, 2 Jun - Tue, 9 Jun
Multiple Airlines Logo
4:17 p.m. - 4:45 p.m.
STL
-
YYZ
23h 28m
1 stop
Multiple Airlines Logo
6:30 a.m. - 8:52 a.m.
YYZ
-
STL
27h 22m
2 stops
C$ 539Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
4:19 p.m. - 4:45 p.m.
STL
-
YYZ
23h 26m
1 stop
Multiple Airlines Logo
4:45 p.m. - 6:36 p.m.
YYZ
-
STL
26h 51m
2 stops
C$ 545Multiple Airlines
Wed, 3 Jun - Wed, 10 Jun
Multiple Airlines Logo
4:19 p.m. - 4:45 p.m.
STL
-
YYZ
23h 26m
1 stop
Multiple Airlines Logo
7:45 a.m. - 11:49 p.m.
YYZ
-
STL
17h 04m
1 stop
C$ 554Multiple Airlines
Wed, 3 Jun - Wed, 10 Jun
American Airlines Logo
9:09 a.m. - 5:44 p.m.
STL
-
YYZ
7h 35m
1 stop
American Airlines Logo
7:25 a.m. - 2:02 p.m.
YYZ
-
STL
7h 37m
1 stop
C$ 560American Airlines
Wed, 17 Jun - Wed, 24 Jun
Multiple Airlines Logo
5:27 p.m. - 2:05 p.m.
STL
-
YYZ
19h 38m
2 stops
Multiple Airlines Logo
7:45 a.m. - 11:49 p.m.
YYZ
-
STL
17h 04m
1 stop
C$ 566Multiple Airlines
Wed, 3 Jun - Wed, 10 Jun
American Airlines Logo
1:42 p.m. - 11:29 p.m.
STL
-
YYZ
8h 47m
1 stop
American Airlines Logo
7:25 a.m. - 2:02 p.m.
YYZ
-
STL
7h 37m
1 stop
C$ 567American Airlines
Tue, 9 Jun - Tue, 16 Jun
American Airlines Logo
1:42 p.m. - 11:29 p.m.
STL
-
YYZ
8h 47m
1 stop
American Airlines Logo
1:15 p.m. - 12:16 a.m.
YYZ
-
STL
12h 01m
1 stop
C$ 571American Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
4:17 p.m. - 4:45 p.m.
STL
-
YYZ
23h 28m
1 stop
Multiple Airlines Logo
4:45 p.m. - 6:36 p.m.
YYZ
-
STL
26h 51m
2 stops
C$ 589Multiple Airlines
Wed, 10 Jun - Sun, 14 Jun
Multiple Airlines Logo
4:52 p.m. - 2:05 p.m.
STL
-
YYZ
20h 13m
2 stops
Multiple Airlines Logo
9:50 a.m. - 11:59 p.m.
YYZ
-
STL
15h 09m
1 stop
C$ 595Multiple Airlines
Mon, 13 Jul - Fri, 17 Jul

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
21 May
STL7:05 a.m.Lambert-St Louis
1h 51m
YYZ9:56 a.m.Toronto Pearson Intl
25 May
YYZ11:00 a.m.Toronto Pearson Intl
2h 06m
STL12:06 p.m.Lambert-St Louis
C$ 646
Air Canada
21 May
STL7:05 a.m.Lambert-St Louis
1h 51m
YYZ9:56 a.m.Toronto Pearson Intl
25 May
YYZ4:00 p.m.Toronto Pearson Intl
5h 25m
1 stop
STL8:25 p.m.Lambert-St Louis
C$ 649
Air Canada
22 Jun
STL1:20 p.m.Lambert-St Louis
5h 35m
1 stop
YYZ7:55 p.m.Toronto Pearson Intl
29 Jun
YYZ11:15 a.m.Toronto Pearson Intl
2h 06m
STL12:21 p.m.Lambert-St Louis
C$ 659

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
2 Jun
STL6:35 a.m.Lambert-St Louis
10h 09m
1 stop
YYZ5:44 p.m.Toronto Pearson Intl
9 Jun
YYZ3:13 p.m.Toronto Pearson Intl
10h 03m
1 stop
STL12:16 a.m.Lambert-St Louis
C$ 533
American Airlines
17 Jun
STL9:09 a.m.Lambert-St Louis
7h 35m
1 stop
YYZ5:44 p.m.Toronto Pearson Intl
24 Jun
YYZ7:25 a.m.Toronto Pearson Intl
7h 37m
1 stop
STL2:02 p.m.Lambert-St Louis
C$ 560
American Airlines
9 Jun
STL1:42 p.m.Lambert-St Louis
8h 47m
1 stop
YYZ11:29 p.m.Toronto Pearson Intl
16 Jun
YYZ7:25 a.m.Toronto Pearson Intl
7h 37m
1 stop
STL2:02 p.m.Lambert-St Louis
C$ 567

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 9 May 2026.
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

Cheapest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 2/6

6:35 a.m.-5:44 p.m.

1 stop10h 09m

Toronto Pearson Intl

Tue 9/6

3:13 p.m.-12:16 a.m.

1 stop10h 03m

C$ 533

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 9/6

4:17 p.m.-4:45 p.m.

1 stop23h 28m

Toronto Pearson Intl

Tue 16/6

6:30 a.m.-8:52 a.m.

2 stops27h 22m

C$ 539

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 3/6

4:19 p.m.-4:45 p.m.

1 stop23h 26m

Toronto Pearson Intl

Wed 10/6

4:45 p.m.-6:36 p.m.

2 stops26h 51m

C$ 545

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 3/6

4:19 p.m.-4:45 p.m.

1 stop23h 26m

Toronto Pearson Intl

Wed 10/6

7:45 a.m.-11:49 p.m.

1 stop17h 04m

C$ 554
Quickest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 17/6

9:09 a.m.-5:44 p.m.

1 stop7h 35m

Toronto Pearson Intl

Wed 24/6

7:25 a.m.-2:02 p.m.

1 stop7h 37m

C$ 560

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 3/6

5:27 p.m.-2:05 p.m.

2 stops19h 38m

Toronto Pearson Intl

Wed 10/6

7:45 a.m.-11:49 p.m.

1 stop17h 04m

C$ 566

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 9/6

1:42 p.m.-11:29 p.m.

1 stop8h 47m

Toronto Pearson Intl

Tue 16/6

7:25 a.m.-2:02 p.m.

1 stop7h 37m

C$ 567

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 9/6

1:42 p.m.-11:29 p.m.

1 stop8h 47m

Toronto Pearson Intl

Tue 16/6

1:15 p.m.-12:16 a.m.

1 stop12h 01m

C$ 571

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 10/6

4:17 p.m.-4:45 p.m.

1 stop23h 28m

Toronto Pearson Intl

Sun 14/6

4:45 p.m.-6:36 p.m.

2 stops26h 51m

C$ 589

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 13/7

4:52 p.m.-2:05 p.m.

2 stops20h 13m

Toronto Pearson Intl

Fri 17/7

9:50 a.m.-11:59 p.m.

1 stop15h 09m

C$ 595

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 March, then book flights to Toronto Pearson Intl Airport from St. Louis during December instead. Flights to Toronto Pearson Intl Airport in December, while not as cheap as those in March, still average around C$ 637.

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

Our data shows that Sunday 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$ 463. When flying out on a Tuesday, 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$ 637.

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 in the morning. Our users have found flights to Toronto Pearson Intl Airport in the morning for as low as C$ 553. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 828 on average. Flights to Toronto Pearson Intl Airport from St. Louis at noon 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 from St. Louis 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$ 769 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$ 539 on momondo.

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

You could potentially save up to 27% 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 May 2026, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 6% cheaper 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

C$ 284

Fastest flight time

1h 51m

Direct flights

Every day
The best flight deal from St. Louis to Toronto Pearson Intl Airport found on momondo in the last 72 hours is C$ 284
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

Frequently asked questions about flying from St. Louis to Toronto Pearson Intl Airport

  • 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$ 324Free CancellationRating
7.1
11,008 reviews
Search Air Canada flights

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

    Air Canada operates around 13 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$ 637, but momondo users have found Air Canada deals from St. Louis to Toronto Pearson Intl Airport from as low as C$ 324 round-trip. Air Canada has been scored 7.1/10 in 11,008 reviews.

Travelling to a place near Toronto?

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

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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