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Cheap flights from St. Louis to Toronto from C$ 200

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 17/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Toronto

Cheap round-trip flights

American Airlines Logo
8:01 p.m. - 12:32 p.m.STL-YYZ
15h 31m1 stop
American Airlines Logo
3:11 p.m. - 9:53 p.m.YYZ-STL
7h 42m1 stop
C$ 476American Airlines
Find Deal
Tue, 2 Sep - Wed, 10 Sep
Logo
12:05 p.m. - 11:35 a.m.STL-YYZ
22h 30m2 stops
Logo
7:00 a.m. - 10:50 a.m.YYZ-STL
28h 50m3 stops
C$ 490
Find Deal
Thu, 4 Sep - Sat, 6 Sep
Logo
9:50 a.m. - 9:07 p.m.STL-YYZ
10h 17m2 stops
Logo
6:30 a.m. - 5:55 p.m.YYZ-STL
12h 25m1 stop
C$ 501
Find Deal
Fri, 17 Oct - Sat, 25 Oct
American Airlines Logo
7:23 a.m. - 5:41 p.m.STL-YYZ
9h 18m1 stop
American Airlines Logo
6:30 a.m. - 12:54 p.m.YYZ-STL
7h 24m1 stop
C$ 506American Airlines
Find Deal
Tue, 26 Aug - Tue, 2 Sep
Air Canada Logo
4:05 p.m. - 7:00 p.m.STL-YYZ
1h 55mdirect
Air Canada Logo
6:35 p.m. - 7:38 p.m.YYZ-STL
2h 03mdirect
C$ 603Air Canada
Find Deal
Thu, 4 Sep - Sun, 7 Sep
United Airlines Logo
3:20 p.m. - 11:58 p.m.STL-YYZ
7h 38m1 stop
United Airlines Logo
9:00 a.m. - 3:44 p.m.YYZ-STL
7h 44m1 stop
C$ 610United Airlines
Find Deal
Wed, 3 Sep - Tue, 9 Sep
Delta Logo
9:16 a.m. - 8:43 p.m.STL-YYZ
10h 27m1 stop
Delta Logo
6:44 p.m. - 7:56 a.m.YYZ-STL
14h 12m1 stop
C$ 643Delta
Find Deal
Wed, 3 Sep - Thu, 11 Sep
Air Canada Logo
1:30 p.m. - 11:14 p.m.STL-YYZ
8h 44m1 stop
Air Canada Logo
6:35 p.m. - 7:38 p.m.YYZ-STL
2h 03mdirect
C$ 655Air Canada
Find Deal
Thu, 4 Sep - Sun, 7 Sep
Delta Logo
6:00 a.m. - 11:43 p.m.STL-YYZ
16h 43m1 stop
Delta Logo
6:44 p.m. - 7:56 a.m.YYZ-STL
14h 12m1 stop
C$ 663Delta
Find Deal
Thu, 4 Sep - Thu, 11 Sep
United Airlines Logo
6:35 a.m. - 3:46 p.m.STL-YYZ
8h 11m1 stop
United Airlines Logo
9:00 a.m. - 6:23 p.m.YYZ-STL
10h 23m1 stop
C$ 669United Airlines
Find Deal
Tue, 26 Aug - Tue, 2 Sep

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 Sep
STL4:05 p.m.Lambert-St Louis
1h 55m
YYZ7:00 p.m.Toronto Pearson Intl
7 Sep
YYZ6:35 p.m.Toronto Pearson Intl
2h 03m
STL7:38 p.m.Lambert-St Louis
C$ 603
Find similar
Air Canada
4 Sep
STL1:30 p.m.Lambert-St Louis
8h 44m
1 stop
YYZ11:14 p.m.Toronto Pearson Intl
7 Sep
YYZ6:35 p.m.Toronto Pearson Intl
2h 03m
STL7:38 p.m.Lambert-St Louis
C$ 655
Find similar
Air Canada
4 Sep
STL4:05 p.m.Lambert-St Louis
1h 55m
YYZ7:00 p.m.Toronto Pearson Intl
6 Sep
YYZ2:15 p.m.Toronto Pearson Intl
2h 03m
STL3:18 p.m.Lambert-St Louis
C$ 692
Find similar

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

Our best United Airlines deals on St. Louis to Toronto Pearson Intl Airport flight tickets
United Airlines
3 Sep
STL3:20 p.m.Lambert-St Louis
7h 38m
1 stop
YYZ11:58 p.m.Toronto Pearson Intl
9 Sep
YYZ9:00 a.m.Toronto Pearson Intl
7h 44m
1 stop
STL3:44 p.m.Lambert-St Louis
C$ 610
Find similar
United Airlines
26 Aug
STL6:35 a.m.Lambert-St Louis
8h 11m
1 stop
YYZ3:46 p.m.Toronto Pearson Intl
2 Sep
YYZ9:00 a.m.Toronto Pearson Intl
10h 23m
1 stop
STL6:23 p.m.Lambert-St Louis
C$ 669
Find similar
United Airlines
26 Aug
STL9:17 a.m.Lambert-St Louis
13h 41m
1 stop
YYZ11:58 p.m.Toronto Pearson Intl
3 Sep
YYZ10:00 a.m.Toronto Pearson Intl
9h 23m
1 stop
STL6:23 p.m.Lambert-St Louis
C$ 681
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 31 July 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

Tue 2/9

8:01 p.m.-12:32 p.m.

1 stop15h 31m

Toronto Pearson Intl

Wed 10/9

3:11 p.m.-9:53 p.m.

1 stop7h 42m

C$ 476

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 4/9

12:05 p.m.-11:35 a.m.

2 stops22h 30m

Toronto Pearson Intl

Sat 6/9

7:00 a.m.-10:50 a.m.

3 stops28h 50m

C$ 490

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 17/10

9:50 a.m.-9:07 p.m.

2 stops10h 17m

Toronto Pearson Intl

Sat 25/10

6:30 a.m.-5:55 p.m.

1 stop12h 25m

C$ 501

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 26/8

7:23 a.m.-5:41 p.m.

1 stop9h 18m

Toronto Pearson Intl

Tue 2/9

6:30 a.m.-12:54 p.m.

1 stop7h 24m

C$ 506

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 4/9

4:05 p.m.-7:00 p.m.

Nonstop1h 55m

Toronto Pearson Intl

Sun 7/9

6:35 p.m.-7:38 p.m.

Nonstop2h 03m

C$ 603

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 3/9

3:20 p.m.-11:58 p.m.

1 stop7h 38m

Toronto Pearson Intl

Tue 9/9

9:00 a.m.-3:44 p.m.

1 stop7h 44m

C$ 610

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 3/9

9:16 a.m.-8:43 p.m.

1 stop10h 27m

Toronto Pearson Intl

Thu 11/9

6:44 p.m.-7:56 a.m.

1 stop14h 12m

C$ 643

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 4/9

1:30 p.m.-11:14 p.m.

1 stop8h 44m

Toronto Pearson Intl

Sun 7/9

6:35 p.m.-7:38 p.m.

Nonstop2h 03m

C$ 655

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 4/9

6:00 a.m.-11:43 p.m.

1 stop16h 43m

Toronto Pearson Intl

Thu 11/9

6:44 p.m.-7:56 a.m.

1 stop14h 12m

C$ 663

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 26/8

6:35 a.m.-3:46 p.m.

1 stop8h 11m

Toronto Pearson Intl

Tue 2/9

9:00 a.m.-6:23 p.m.

1 stop10h 23m

C$ 669

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 cheapest month to fly to Toronto Pearson Intl Airport?

If you aren’t able to travel during the month of January, then book flights to Toronto Pearson Intl Airport from St. Louis during October instead. Flights to Toronto Pearson Intl Airport in October, while not as cheap as those in January, still average around C$ 408.

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

Our data shows that Thursday 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$ 356. When flying out on a Sunday, 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$ 925.

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$ 591. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 779 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$ 628 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$ 305 on momondo.

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

There are 1 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.

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

You could potentially save up to 67% 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 July 2025, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 12% 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$ 200

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 C$ 200. The best round-trip flight deal from St. Louis to Toronto Pearson Intl Airport found on momondo in the last 72 hours is C$ 476.
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.
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 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?

    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$ 301Free CancellationRating
7.1
9,851 reviews
Search Air Canada flights

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

    Air Canada operates around 14 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$ 500, but momondo users have found Air Canada deals from St. Louis to Toronto Pearson Intl Airport from as low as C$ 218 round-trip. Air Canada has been scored 7.1/10 in 9,851 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
Markham
Muskoka
Barrie
Niagara-on-the-Lake
Vaughan
Guelph
Brantford
Kitchener
Burlington
Orillia
Peterborough
Cambridge
Gravenhurst
Oakville
St. Catharines

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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