What is the cheapest airline that flies from Lambert-St Louis to Toronto?

Delta is the most popular carrier operating from Lambert-St Louis to Toronto

How many flights depart from St. Louis to Toronto on average per day?

As of March 2026, there are 1 flights per day flying from St. Louis to Toronto. The most common time of day flights depart is 4:00p.m., with 100% of flights taking off in the afternoon.

How many flights depart from St. Louis to Toronto on average per week?

12 flights are operational weekly from St. Louis to Toronto as of March 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

When did momondo last update prices for flights from Lambert-St Louis Airport to Toronto?

Prices for flights from Lambert-St Louis Airport to Toronto were last updated today.

How many operators does momondo search for flights from Lambert-St Louis Airport to Toronto?

As of March 2026, there is 1 operator available to choose from for flights from Lambert-St Louis Airport to Toronto.

How old do you have to be to fly from Lambert-St Louis Airport to Toronto?

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.

What documentation or ID do you need to fly to Toronto?

The necessary travel and health documents for your Toronto 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.

C$ 219 Cheap Flights from St. Louis to Toronto in 2026

Q: What is the typical price of a round-trip flight between St. Louis and Toronto?

Prices are currently typical for flights on this route. Typical prices usually range from C$ 396 to C$ 786. The lowest price recently found on this route was C$ 605.

1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Toronto

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

STL

YYZ

20h 17m

1 stop

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

YYZ

STL

25h 20m

2 stops

C$ 605Multiple Airlines

Tue, 21 Apr - Tue, 28 Apr

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

STL

YYZ

19h 38m

2 stops

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

YYZ

STL

15h 31m

1 stop

C$ 612Multiple Airlines

Wed, 27 May - Tue, 2 Jun

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

STL

YYZ

9h 45m

1 stop

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

YYZ

STL

8h 57m

1 stop

C$ 624American Airlines

Tue, 14 Apr - Wed, 15 Apr

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

STL

YYZ

9h 45m

1 stop

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

YYZ

STL

10h 00m

1 stop

C$ 629American Airlines

Tue, 21 Apr - Tue, 28 Apr

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

STL

YYZ

16h 42m

2 stops

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

YYZ

STL

7h 29m

1 stop

C$ 638Multiple Airlines

Wed, 29 Apr - Sun, 3 May

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

STL

YYZ

21h 15m

2 stops

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

YYZ

STL

6h 09m

1 stop

C$ 653WestJet

Tue, 14 Apr - Wed, 15 Apr

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

STL

YYZ

11h 05m

2 stops

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

YYZ

STL

15h 31m

1 stop

C$ 660Multiple Airlines

Thu, 28 May - Tue, 2 Jun

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

STL

YYZ

23h 26m

1 stop

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

YYZ

STL

26h 51m

2 stops

C$ 663Multiple Airlines

Wed, 3 Jun - Sun, 7 Jun

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

STL

YYZ

6h 28m

1 stop

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

YYZ

STL

10h 45m

1 stop

C$ 667American Airlines

Sun, 12 Apr - Wed, 15 Apr

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

STL

YYZ

17h 27m

1 stop

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

YYZ

STL

29h 00m

2 stops

C$ 671Multiple Airlines

Sun, 12 Apr - Wed, 15 Apr

WestJet flights from St. Louis to Toronto

Our best WestJet deals on St. Louis to Toronto 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$ 653

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$ 688

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$ 697

Air Canada flights from St. Louis to Toronto

Our best Air Canada deals on St. Louis to Toronto 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$ 728

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$ 732

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$ 734

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$ 605

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$ 612

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$ 624

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$ 629

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$ 638

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$ 653

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$ 660

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$ 663

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$ 667

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$ 671

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Toronto

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

Prices

Airlines

Other information

What is the typical price of a round-trip flight between St. Louis and Toronto?

What is the cheapest month to fly to Toronto?

The month of June is, on average, the cheapest month to fly to Toronto from St. Louis, with most prices found around C$ 459. The month of March is another great option to travel to Toronto, with average flight prices from St. Louis averaging around C$ 587.

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

According to our data, Sunday is the cheapest day to fly to Toronto from St. Louis. The lowest ticket price found for a Sunday departure recently was C$ 466. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from St. Louis to Toronto on a Tuesday will generally be more expensive and average around C$ 641. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Flying to Toronto from St. Louis in the morning is the least expensive time of day to depart. momondo users have found prices as low as C$ 577 when looking at flights departing in the morning. Try not to purchase tickets in the afternoon because they tend to be around C$ 641. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Lambert-St Louis to Toronto flight route?

Fly from Lambert-St Louis to Toronto Pearson Intl for the best Lambert-St Louis - Toronto flight prices

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

There is only 1 cabin class available to choose from on Lambert-St Louis to Toronto 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 flights?

You could potentially save up to 36% on your flight if you consider stops on a St. Louis to Toronto flight.

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

As of March 2026, prices for St. Louis to Toronto flights are approximately 18% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Toronto

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Toronto according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Toronto (STL to YTO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Toronto

Best price found	C$ 326
Fastest flight time	1h 51m
Direct flights	Every day
Airports in Toronto	3 airports

The best flight deal from St. Louis to Toronto found on momondo in the last 72 hours is C$ 326

The fastest flight from St. Louis to Toronto takes 1h 51m

Direct flights go from St. Louis to Toronto every day.

There are 3 airports in Toronto. From St. Louis there are direct flights to Toronto Pearson Intl (YYZ).

Search flight deals

How far is Lambert-St Louis to Toronto by plane?
There are 1062.1 km between Lambert-St Louis and Toronto. In terms of flight time, this usually takes a little over 1h 51m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Toronto?
Prices for flights from Lambert-St Louis Airport to Toronto were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Toronto?
As of March 2026, there is 1 operator available to choose from for flights from Lambert-St Louis Airport to Toronto.
How old do you have to be to fly from Lambert-St Louis Airport to Toronto?
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.
What documentation or ID do you need to fly to Toronto?
The necessary travel and health documents for your Toronto 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from St. Louis to Toronto is Embraer 175 (29.85% of total bookings). The next most popular plane models are Boeing 787-8 Dreamliner (18.66%), Canadair (Bombardier) Regional Jet 900 (17.16%), and Airbus A220-300 (14.18%).

Best airlines flying from St. Louis to Toronto

Compare and see reviews for airlines that fly from St. Louis to Toronto with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom C$ 326	Free Cancellation	Rating 7.1 10,838 reviews		Search Air Canada flights

Air Canada Flights From St. Louis to Toronto
The lowest priced Air Canada flight from St. Louis to Toronto from the last 72 hours was C$ 326. Generally, Air Canada has 6 flights on this route every week with an average price of C$ 641. Air Canada is rated 7.1/10 by our users.

Apsley

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Toronto . Millions of users trust and use momondo every year so you are in good hands.

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 in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Toronto from St. Louis.

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

If you are simply researching potential flights to Toronto, momondo offers a useful price alert feature which will track prices for flights to Toronto from St. Louis and alert you when they change.

An easier way to manage your Toronto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Fri 24/4

Fri 1/5

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada

Nearby airports

Airlines

Cabin classes

Other Canada destinations

Other flights from St. Louis

Complete your trip

Feeling lucky

Fly into one of these airports located in Toronto

Toronto Region of Waterloo Intl Airport

Toronto Island Airport

Toronto Pearson Intl Airport

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.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from St. Louis to Toronto

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

WestJet flights from St. Louis to Toronto

Our best WestJet deals on St. Louis to Toronto flight tickets

Air Canada flights from St. Louis to Toronto

Our best Air Canada deals on St. Louis to Toronto flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Toronto that are best for you.

See travel insights to Toronto from

How to get the cheapest flight ticket from St. Louis to Toronto

What is the typical price of a round-trip flight between St. Louis and Toronto?

What is the cheapest month to fly to Toronto?

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

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

What is the cheapest Lambert-St Louis to Toronto flight route?

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

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

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

What is the cheapest airline that flies from Lambert-St Louis to Toronto?

How many flights depart from St. Louis to Toronto on average per day?

How many flights depart from St. Louis to Toronto on average per week?

When to book flights from St. Louis to Toronto

Cheap St. Louis to Toronto (STL to YTO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Toronto

Best price found

Fastest flight time

Direct flights

Airports in Toronto

Best airlines flying from St. Louis to Toronto

Compare and see reviews for airlines that fly from St. Louis to Toronto with momondo

Air Canada Flights From St. Louis to Toronto

Travelling to a place near Toronto?

Why use momondo?

An easier way to manage your Toronto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Canada

Fly into one of these airports located in Toronto

Airports listed have a maximum distance of 83.6 km from Toronto

Fly your favourite airline to Toronto

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Toronto

List of cabin classes available on flights landing in Toronto. Availability may vary depending on flight origin and airline.

Popular Cities in Canada

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from St. Louis

According to popular flight searches on momondo this year

Complete your trip to Toronto

Explore popular destinations other users love

According to popular flight searches on momondo this year