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Cheap flights from St. Louis to Toronto from C$ 246

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 27/4. 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
4:59 p.m. - 2:16 p.m.
STL
-
YYZ
20h 17m
1 stop
Multiple Airlines Logo
6:30 a.m. - 6:50 a.m.
YYZ
-
STL
25h 20m
2 stops
C$ 604Multiple Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
5:27 p.m. - 2:05 p.m.
STL
-
YYZ
19h 38m
2 stops
Multiple Airlines Logo
9:50 a.m. - 12:21 a.m.
YYZ
-
STL
15h 31m
1 stop
C$ 611Multiple Airlines
Wed, 27 May - Tue, 2 Jun
American Airlines Logo
6:00 a.m. - 4:45 p.m.
STL
-
YYZ
9h 45m
1 stop
American Airlines Logo
7:15 a.m. - 3:12 p.m.
YYZ
-
STL
8h 57m
1 stop
C$ 623American Airlines
Tue, 14 Apr - Wed, 15 Apr
American Airlines Logo
6:00 a.m. - 4:45 p.m.
STL
-
YYZ
9h 45m
1 stop
American Airlines Logo
10:59 a.m. - 7:59 p.m.
YYZ
-
STL
10h 00m
1 stop
C$ 627American Airlines
Tue, 21 Apr - Tue, 28 Apr
Multiple Airlines Logo
8:23 p.m. - 2:05 p.m.
STL
-
YYZ
16h 42m
2 stops
Multiple Airlines Logo
2:15 p.m. - 8:44 p.m.
YYZ
-
STL
7h 29m
1 stop
C$ 637Multiple Airlines
Wed, 29 Apr - Sun, 3 May
WestJet Logo
5:35 p.m. - 3:50 p.m.
STL
-
YYZ
21h 15m
2 stops
WestJet Logo
6:27 p.m. - 11:36 p.m.
YYZ
-
STL
6h 09m
1 stop
C$ 652WestJet
Tue, 14 Apr - Wed, 15 Apr
Multiple Airlines Logo
9:50 a.m. - 9:55 p.m.
STL
-
YYZ
11h 05m
2 stops
Multiple Airlines Logo
9:50 a.m. - 12:21 a.m.
YYZ
-
STL
15h 31m
1 stop
C$ 659Multiple Airlines
Thu, 28 May - Tue, 2 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$ 661Multiple Airlines
Wed, 3 Jun - Sun, 7 Jun
American Airlines Logo
7:05 a.m. - 2:33 p.m.
STL
-
YYZ
6h 28m
1 stop
American Airlines Logo
6:15 a.m. - 4:00 p.m.
YYZ
-
STL
10h 45m
1 stop
C$ 666American Airlines
Sun, 12 Apr - Wed, 15 Apr
Multiple Airlines Logo
4:59 p.m. - 11:26 a.m.
STL
-
YYZ
17h 27m
1 stop
Multiple Airlines Logo
6:30 a.m. - 10:30 a.m.
YYZ
-
STL
29h 00m
2 stops
C$ 670Multiple Airlines
Sun, 12 Apr - Wed, 15 Apr

WestJet flights from St. Louis to Toronto Pearson Intl Airport

Our best WestJet deals on St. Louis to Toronto Pearson Intl Airport flight tickets
WestJet
14 Apr
STL5:35 p.m.Lambert-St Louis
21h 15m
2 stops
YYZ3:50 p.m.Toronto Pearson Intl
15 Apr
YYZ6:27 p.m.Toronto Pearson Intl
6h 09m
1 stop
STL11:36 p.m.Lambert-St Louis
C$ 652
WestJet
17 Apr
STL5:35 p.m.Lambert-St Louis
21h 15m
2 stops
YYZ3:50 p.m.Toronto Pearson Intl
19 Apr
YYZ12:16 p.m.Toronto Pearson Intl
9h 28m
1 stop
STL8:44 p.m.Lambert-St Louis
C$ 686
WestJet
17 Jun
STL10:45 a.m.Lambert-St Louis
3h 33m
1 stop
YYZ3:18 p.m.Toronto Pearson Intl
25 Jun
YYZ1:30 p.m.Toronto Pearson Intl
11h 08m
1 stop
STL11:38 p.m.Lambert-St Louis
C$ 696

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
4 May
STL2:15 p.m.Lambert-St Louis
1h 58m
YYZ5:13 p.m.Toronto Pearson Intl
11 May
YYZ11:00 a.m.Toronto Pearson Intl
2h 06m
STL12:06 p.m.Lambert-St Louis
C$ 726
Air Canada
7 May
STL7:05 a.m.Lambert-St Louis
1h 51m
YYZ9:56 a.m.Toronto Pearson Intl
10 May
YYZ7:00 p.m.Toronto Pearson Intl
2h 09m
STL8:09 p.m.Lambert-St Louis
C$ 730
Air Canada
7 May
STL1:05 p.m.Lambert-St Louis
5h 53m
1 stop
YYZ7:58 p.m.Toronto Pearson Intl
14 May
YYZ11:00 a.m.Toronto Pearson Intl
2h 06m
STL12:06 p.m.Lambert-St Louis
C$ 733

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 24 March 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 21/4

4:59 p.m.-2:16 p.m.

1 stop20h 17m

Toronto Pearson Intl

Tue 28/4

6:30 a.m.-6:50 a.m.

2 stops25h 20m

C$ 604

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 27/5

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

2 stops19h 38m

Toronto Pearson Intl

Tue 2/6

9:50 a.m.-12:21 a.m.

1 stop15h 31m

C$ 611

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 14/4

6:00 a.m.-4:45 p.m.

1 stop9h 45m

Toronto Pearson Intl

Wed 15/4

7:15 a.m.-3:12 p.m.

1 stop8h 57m

C$ 623

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 21/4

6:00 a.m.-4:45 p.m.

1 stop9h 45m

Toronto Pearson Intl

Tue 28/4

10:59 a.m.-7:59 p.m.

1 stop10h 00m

C$ 627

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 29/4

8:23 p.m.-2:05 p.m.

2 stops16h 42m

Toronto Pearson Intl

Sun 3/5

2:15 p.m.-8:44 p.m.

1 stop7h 29m

C$ 637

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 14/4

5:35 p.m.-3:50 p.m.

2 stops21h 15m

Toronto Pearson Intl

Wed 15/4

6:27 p.m.-11:36 p.m.

1 stop6h 09m

C$ 652

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 28/5

9:50 a.m.-9:55 p.m.

2 stops11h 05m

Toronto Pearson Intl

Tue 2/6

9:50 a.m.-12:21 a.m.

1 stop15h 31m

C$ 659

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

Sun 7/6

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

2 stops26h 51m

C$ 661
Quickest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 12/4

7:05 a.m.-2:33 p.m.

1 stop6h 28m

Toronto Pearson Intl

Wed 15/4

6:15 a.m.-4:00 p.m.

1 stop10h 45m

C$ 666

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 12/4

4:59 p.m.-11:26 a.m.

1 stop17h 27m

Toronto Pearson Intl

Wed 15/4

6:30 a.m.-10:30 a.m.

2 stops29h 00m

C$ 670

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

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 May instead. Flights to Toronto Pearson Intl Airport in May, while not as cheap as those in March, still average around C$ 576.

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$ 465. 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$ 639.

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$ 588. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 762 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

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 36% 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 March 2026, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 72% 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

C$ 325

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$ 325
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$ 325Free CancellationRating
7.1
10,836 reviews
Search Air Canada flights

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

    Air Canada 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 C$ 639, but momondo users have found Air Canada deals from St. Louis to Toronto Pearson Intl Airport from as low as C$ 325 round-trip. Air Canada has been scored 7.1/10 in 10,836 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
Vaughan
Barrie
Muskoka
Kitchener
Niagara-on-the-Lake
Burlington
Orillia
Cambridge
Brantford
Waterloo
Pickering
Oakville
Peterborough

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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