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Cheap flights from St. Louis to Toronto from C$ 197

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 3/3. 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
11:32 a.m. - 11:26 a.m.
STL
-
YYZ
22h 54m
2 stops
Multiple Airlines Logo
7:10 a.m. - 11:19 p.m.
YYZ
-
STL
17h 09m
1 stop
C$ 426Multiple Airlines
Wed, 11 Mar - Tue, 17 Mar
Multiple Airlines Logo
3:49 p.m. - 2:20 p.m.
STL
-
YYZ
21h 31m
1 stop
Multiple Airlines Logo
7:10 a.m. - 11:19 p.m.
YYZ
-
STL
17h 09m
1 stop
C$ 431Multiple Airlines
Tue, 3 Mar - Tue, 10 Mar
Multiple Airlines Logo
3:49 p.m. - 2:20 p.m.
STL
-
YYZ
21h 31m
1 stop
Multiple Airlines Logo
3:40 p.m. - 10:37 a.m.
YYZ
-
STL
19h 57m
2 stops
C$ 441Multiple Airlines
Tue, 3 Mar - Tue, 10 Mar
Multiple Airlines Logo
11:32 a.m. - 11:26 a.m.
STL
-
YYZ
22h 54m
2 stops
Multiple Airlines Logo
8:35 p.m. - 11:19 a.m.
YYZ
-
STL
15h 44m
1 stop
C$ 443Multiple Airlines
Wed, 11 Mar - Thu, 19 Mar
Multiple Airlines Logo
11:32 a.m. - 11:26 a.m.
STL
-
YYZ
22h 54m
2 stops
Multiple Airlines Logo
9:35 a.m. - 12:15 p.m.
YYZ
-
STL
27h 40m
1 stop
C$ 449Multiple Airlines
Wed, 11 Mar - Wed, 18 Mar
Multiple Airlines Logo
8:10 p.m. - 2:20 p.m.
STL
-
YYZ
17h 10m
1 stop
Multiple Airlines Logo
9:35 a.m. - 12:15 p.m.
YYZ
-
STL
27h 40m
1 stop
C$ 460Multiple Airlines
Mon, 16 Mar - Wed, 18 Mar
Multiple Airlines Logo
12:14 p.m. - 6:43 a.m.
STL
-
YYZ
17h 29m
1 stop
Multiple Airlines Logo
8:35 p.m. - 11:19 a.m.
YYZ
-
STL
15h 44m
1 stop
C$ 465Multiple Airlines
Mon, 23 Mar - Thu, 26 Mar
Multiple Airlines Logo
12:14 p.m. - 6:13 a.m.
STL
-
YYZ
16h 59m
2 stops
Multiple Airlines Logo
8:35 p.m. - 11:19 a.m.
YYZ
-
STL
15h 44m
1 stop
C$ 469Multiple Airlines
Mon, 23 Mar - Thu, 26 Mar
Multiple Airlines Logo
12:14 p.m. - 6:43 a.m.
STL
-
YYZ
17h 29m
1 stop
Multiple Airlines Logo
8:35 p.m. - 11:19 a.m.
YYZ
-
STL
15h 44m
1 stop
C$ 472Multiple Airlines
Mon, 23 Mar - Thu, 26 Mar
Multiple Airlines Logo
11:21 a.m. - 11:46 a.m.
STL
-
YYZ
23h 25m
2 stops
Multiple Airlines Logo
7:15 a.m. - 11:19 p.m.
YYZ
-
STL
17h 04m
1 stop
C$ 473Multiple Airlines
Sun, 26 Apr - Thu, 30 Apr

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
14 Feb
STL10:14 a.m.Lambert-St Louis
9h 21m
2 stops
YYZ8:35 p.m.Toronto Pearson Intl
21 Feb
YYZ6:10 a.m.Toronto Pearson Intl
5h 52m
1 stop
STL11:02 a.m.Lambert-St Louis
C$ 1,100
Delta
8 Feb
STL9:45 a.m.Lambert-St Louis
9h 41m
1 stop
YYZ8:26 p.m.Toronto Pearson Intl
14 Feb
YYZ6:05 a.m.Toronto Pearson Intl
11h 37m
2 stops
STL4:42 p.m.Lambert-St Louis
C$ 1,159
Delta
13 Feb
STL7:10 a.m.Lambert-St Louis
8h 52m
1 stop
YYZ5:02 p.m.Toronto Pearson Intl
15 Feb
YYZ7:50 a.m.Toronto Pearson Intl
10h 06m
1 stop
STL4:56 p.m.Lambert-St Louis
C$ 1,179

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

Our best Alaska Airlines deals on St. Louis to Toronto Pearson Intl Airport flight tickets
Alaska Airlines
3 Mar
STL7:00 a.m.Lambert-St Louis
31h 35m
1 stop
YYZ3:35 p.m.Toronto Pearson Intl
10 Mar
YYZ4:45 p.m.Toronto Pearson Intl
22h 06m
1 stop
STL1:51 p.m.Lambert-St Louis
C$ 577
Alaska Airlines
27 Feb
STL2:47 p.m.Lambert-St Louis
23h 48m
1 stop
YYZ3:35 p.m.Toronto Pearson Intl
1 Mar
YYZ4:45 p.m.Toronto Pearson Intl
32h 14m
1 stop
STL11:59 p.m.Lambert-St Louis
C$ 587

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 6 February 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

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 11/3

11:32 a.m.-11:26 a.m.

2 stops22h 54m

Toronto Pearson Intl

Tue 17/3

7:10 a.m.-11:19 p.m.

1 stop17h 09m

C$ 426

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 3/3

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

1 stop21h 31m

Toronto Pearson Intl

Tue 10/3

7:10 a.m.-11:19 p.m.

1 stop17h 09m

C$ 431

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 3/3

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

1 stop21h 31m

Toronto Pearson Intl

Tue 10/3

3:40 p.m.-10:37 a.m.

2 stops19h 57m

C$ 441

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 11/3

11:32 a.m.-11:26 a.m.

2 stops22h 54m

Toronto Pearson Intl

Thu 19/3

8:35 p.m.-11:19 a.m.

1 stop15h 44m

C$ 443

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 11/3

11:32 a.m.-11:26 a.m.

2 stops22h 54m

Toronto Pearson Intl

Wed 18/3

9:35 a.m.-12:15 p.m.

1 stop27h 40m

C$ 449

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 16/3

8:10 p.m.-2:20 p.m.

1 stop17h 10m

Toronto Pearson Intl

Wed 18/3

9:35 a.m.-12:15 p.m.

1 stop27h 40m

C$ 460

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 23/3

12:14 p.m.-6:43 a.m.

1 stop17h 29m

Toronto Pearson Intl

Thu 26/3

8:35 p.m.-11:19 a.m.

1 stop15h 44m

C$ 465

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 23/3

12:14 p.m.-6:13 a.m.

2 stops16h 59m

Toronto Pearson Intl

Thu 26/3

8:35 p.m.-11:19 a.m.

1 stop15h 44m

C$ 469

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 23/3

12:14 p.m.-6:43 a.m.

1 stop17h 29m

Toronto Pearson Intl

Thu 26/3

8:35 p.m.-11:19 a.m.

1 stop15h 44m

C$ 472

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 26/4

11:21 a.m.-11:46 a.m.

2 stops23h 25m

Toronto Pearson Intl

Thu 30/4

7:15 a.m.-11:19 p.m.

1 stop17h 04m

C$ 473

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$ 595.

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$ 464. 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$ 890.

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$ 574. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 638 on average. Flights to Toronto Pearson Intl Airport from St. Louis in the afternoon 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$ 728 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$ 302 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 21% 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 February 2026, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 176% 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

Mon, Tue, Thu, Fri, Sat and Sun
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 on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
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$ 298Free CancellationRating
7.1
10,697 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$ 638, but momondo users have found Air Canada deals from St. Louis to Toronto Pearson Intl Airport from as low as C$ 298 round-trip. Air Canada has been scored 7.1/10 in 10,697 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
Markham
Muskoka
Vaughan
Barrie
Kitchener
Niagara-on-the-Lake
Orillia
Burlington
Brantford
Cambridge
Pickering
Peterborough
Waterloo
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.

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