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

Air Canada is the most popular carrier operating from Lambert-St Louis to Toronto Pearson Intl

What airlines fly to Toronto Pearson Intl Airport?

Air Canada, American Airlines and United Airlines are the top three most popular airlines that fly to Toronto Pearson Intl Airport from St. Louis according to our data. Air Canada is the first choice among our users, with 72% of people opting to fly with this airline when traveling to Toronto Pearson Intl Airport. Keep in mind that there are 3 different airlines that fly to Toronto Pearson Intl Airport on a routine basis, so you have a few additional options to choose from.

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?

As of June 2026, there are 3 operators available to choose from 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?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Toronto Pearson Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Toronto Pearson Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$196 Cheap Flights from St. Louis to Toronto Pearson Intl Airport in 2026

Q: How many flights depart from St. Louis to Toronto Pearson Intl Airport on average per week?

As of June 2026, 28 flights take off from St. Louis and land in Toronto Pearson Intl Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

Q: How many flights depart from St. Louis to Toronto Pearson Intl Airport on average per day?

The number of flights available between St. Louis and Toronto Pearson Intl Airport is 4 per day as of June 2026. The most frequent departure time is 7:00AM, with 50% of daily flights leaving at noon.

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Find the cheapest flights from St. Louis to Toronto

Round-trip

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Enter your travel dates to find the best prices.

9:09 am - 5:44 pm

STL

YYZ

7h 35m

1 stop

1:15 pm - 12:16 am

YYZ

STL

12h 01m

1 stop

$407American Airlines

Wed, Jun 24 - Tue, Jun 30

2:32 pm - 11:29 pm

STL

YYZ

7h 57m

1 stop

7:17 am - 1:53 pm

YYZ

STL

7h 36m

1 stop

$429American Airlines

Tue, Jun 30 - Tue, Jul 7

11:01 am - 11:26 pm

STL

YYZ

11h 25m

1 stop

11:40 am - 8:44 pm

YYZ

STL

10h 04m

1 stop

$436American Airlines

Sat, Sep 12 - Tue, Sep 15

9:08 am - 5:34 pm

STL

YYZ

7h 26m

1 stop

1:17 pm - 12:16 am

YYZ

STL

11h 59m

1 stop

$450American Airlines

Tue, Jul 21 - Tue, Jul 28

4:17 pm - 4:45 pm

STL

YYZ

23h 28m

1 stop

12:55 pm - 7:23 pm

YYZ

STL

31h 28m

2 stops

$464Multiple Airlines

Wed, Jul 1 - Mon, Jul 6

8:40 am - 11:38 am

STL

YYZ

1h 58mnonstop

11:15 am - 12:21 pm

YYZ

STL

2h 06mnonstop

$465Air Canada

Wed, Jun 17 - Wed, Jun 24

8:40 am - 11:37 am

STL

YYZ

1h 57mnonstop

11:15 am - 12:21 pm

YYZ

STL

2h 06mnonstop

$470Air Canada

Sat, Jun 20 - Sun, Jun 21

1:20 pm - 7:55 pm

STL

YYZ

5h 35m

1 stop

11:15 am - 12:21 pm

YYZ

STL

2h 06mnonstop

$474Air Canada

Sat, Jun 20 - Sun, Jun 21

8:55 am - 11:52 am

STL

YYZ

1h 57mnonstop

2:15 pm - 3:30 pm

YYZ

STL

2h 15mnonstop

$482Air Canada

Thu, Sep 3 - Thu, Dec 3

6:00 am - 2:35 pm

STL

YYZ

7h 35m

1 stop

1:15 pm - 12:16 am

YYZ

STL

12h 01m

1 stop

$489American Airlines

Wed, Jun 17 - Wed, Jun 24

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

Jun 24

STL9:09 amLambert-St Louis

7h 35m

1 stop

YYZ5:44 pmToronto Pearson Intl

Jun 30

YYZ1:15 pmToronto Pearson Intl

12h 01m

1 stop

STL12:16 amLambert-St Louis

$407

American Airlines

Jun 30

STL2:32 pmLambert-St Louis

7h 57m

1 stop

YYZ11:29 pmToronto Pearson Intl

Jul 7

YYZ7:17 amToronto Pearson Intl

7h 36m

1 stop

STL1:53 pmLambert-St Louis

$429

American Airlines

Sep 12

STL11:01 amLambert-St Louis

11h 25m

1 stop

YYZ11:26 pmToronto Pearson Intl

Sep 15

YYZ11:40 amToronto Pearson Intl

10h 04m

1 stop

STL8:44 pmLambert-St Louis

$436

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

Aug 8

STL6:09 pmLambert-St Louis

3h 50m

1 stop

YYZ10:59 pmToronto Pearson Intl

Aug 11

YYZ4:10 pmToronto Pearson Intl

5h 32m

1 stop

STL8:42 pmLambert-St Louis

$516

Delta

Jun 16

STL6:30 amLambert-St Louis

6h 04m

1 stop

YYZ1:34 pmToronto Pearson Intl

Jun 23

YYZ6:59 pmToronto Pearson Intl

14h 10m

1 stop

STL8:09 amLambert-St Louis

$552

Delta

Jun 18

STL6:30 amLambert-St Louis

7h 49m

1 stop

YYZ3:19 pmToronto Pearson Intl

Jun 23

YYZ6:59 pmToronto Pearson Intl

14h 10m

1 stop

STL8:09 amLambert-St Louis

$617

momondo Fare Finder

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

Wed 6/24

9:09 am-5:44 pm

1 stop7h 35m

Toronto Pearson Intl

Tue 6/30

1:15 pm-12:16 am

1 stop12h 01m

$407

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 6/30

2:32 pm-11:29 pm

1 stop7h 57m

Toronto Pearson Intl

Tue 7/7

7:17 am-1:53 pm

1 stop7h 36m

$429

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 9/12

11:01 am-11:26 pm

1 stop11h 25m

Toronto Pearson Intl

Tue 9/15

11:40 am-8:44 pm

1 stop10h 04m

$436

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 7/21

9:08 am-5:34 pm

1 stop7h 26m

Toronto Pearson Intl

Tue 7/28

1:17 pm-12:16 am

1 stop11h 59m

$450

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 7/1

4:17 pm-4:45 pm

1 stop23h 28m

Toronto Pearson Intl

Mon 7/6

12:55 pm-7:23 pm

2 stops31h 28m

$464

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 6/17

8:40 am-11:38 am

Nonstop1h 58m

Toronto Pearson Intl

Wed 6/24

11:15 am-12:21 pm

Nonstop2h 06m

$465

Quickest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 6/20

8:40 am-11:37 am

Nonstop1h 57m

Toronto Pearson Intl

Sun 6/21

11:15 am-12:21 pm

Nonstop2h 06m

$470

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 6/20

1:20 pm-7:55 pm

1 stop5h 35m

Toronto Pearson Intl

Sun 6/21

11:15 am-12:21 pm

Nonstop2h 06m

$474

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 9/3

8:55 am-11:52 am

Nonstop1h 57m

Toronto Pearson Intl

Thu 12/3

2:15 pm-3:30 pm

Nonstop2h 15m

$482

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 6/17

6:00 am-2:35 pm

1 stop7h 35m

Toronto Pearson Intl

Wed 6/24

1:15 pm-12:16 am

1 stop12h 01m

$489

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 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

Prices

Airlines

Other information

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?

The cheapest month to fly to Toronto Pearson Intl Airport from St. Louis is in March. Flight prices, which tend to average around $272, are often lower during this time because this is during the off-season. If you don’t want to visit Toronto Pearson Intl Airport in March, then you should wait until December to fly from St. Louis, when ticket prices are also cheap, with an average price of $466.

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

The cheapest day to depart from St. Louis to Toronto Pearson Intl Airport is on a Sunday when prices can be found for as low as $812. The most expensive day to fly to Toronto Pearson Intl Airport is Saturday, with ticket prices averaging around $973.

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

Flying to Toronto Pearson Intl Airport from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $787 when looking at flights departing in the afternoon. Flights at noon are often more expensive with an average ticket price of $1,077.

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 $576 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 $419 on momondo.

What cabin class options are available on St. Louis to Toronto Pearson Intl Airport flights?

There are 4 cabin classes available to choose from on St. Louis to Toronto Pearson Intl Airport 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?

No. A direct flight is the cheapest option for a flight between St. Louis to Toronto Pearson Intl Airport.

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

As of June 2026, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 27% 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	$451
Fastest flight time	1h 51m
Direct flights	Every day

The best one-way flight to Toronto Pearson Intl Airport from St. Louis in the past 72 hours is $451. The best round-trip flight deal from St. Louis to Toronto Pearson Intl Airport found on momondo in the last 72 hours is $443.

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?
A flight from Lambert-St Louis to Toronto Pearson Intl will travel around 650.6 mi. 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 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?
As of June 2026, there are 3 operators available to choose from 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?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Toronto Pearson Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Toronto Pearson Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from St. Louis to Toronto Pearson Intl Airport?
momondo data reveals that the most frequently booked plane model on the route from St. Louis to Toronto Pearson Intl Airport is Canadair (Bombardier) Regional Jet 900, representing 36.57% of all bookings. The subsequent popular models are Airbus A220-300 at 24.07%, Embraer 175 at 11.57%, and Boeing 787-8 Dreamliner at 11.57%.
What is the most popular airline from St. Louis to Toronto Pearson Intl Airport?
Based on momondo bookings for flights between St. Louis and Toronto Pearson Intl Airport, the leading airline is Air Canada, making up 72% of the total bookings. Other popular airlines include American Airlines with 14% and United Airlines with 14%.

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
United Airlines	PriceFrom $218	Free Cancellation	Rating 7.4 9,773 reviews	Search United Airlines flights
Air Canada	PriceFrom $236	Free Cancellation	Rating 7.1 11,126 reviews	Search Air Canada flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.1 11,641 reviews	Search American Airlines flights

United Airlines Flights From St. Louis to Toronto Pearson Intl Airport
United Airlines 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 $556, but momondo users have found United Airlines deals from St. Louis to Toronto Pearson Intl Airport from as low as $218 round-trip. United Airlines has been scored 7.4/10 in 9,773 reviews.
Air Canada Flights From St. Louis to Toronto Pearson Intl Airport
Air Canada (7.1/10 from 11,126 reviews) operates around 14 flights from St. Louis to Toronto Pearson Intl Airport in any given week. The average Air Canada airfare for this route is around $586, with deals from around $236 rare but found on momondo. Referenced prices are for round-trip St. Louis to Toronto Pearson Intl Airport flight searches in the last 72 hours.

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Why use momondo?

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

Finding the right flight to Toronto from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Toronto quick and easy, saving you time and money.

Can I find flights from St. Louis to Toronto with flexible booking policies on momondo?

All flight searches from St. Louis to Toronto on momondo can be filtered to show those which offer flexible booking policies.

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 Pearson Intl Airport trip

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Cheap flights from St. Louis to Toronto from $196

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 8/11. 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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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

Delta flights from St. Louis to Toronto Pearson Intl Airport

Our best Delta deals on St. Louis to Toronto Pearson Intl Airport flight tickets

momondo Fare Finder

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

See travel insights to Toronto from

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

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?

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

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

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

How far in advance should I book a flight from St. Louis to Toronto Pearson Intl Airport?

What cabin class options are available on St. Louis to Toronto Pearson Intl Airport flights?

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

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

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

What airlines fly to Toronto Pearson Intl Airport?

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

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

When to book flights from St. Louis to Toronto Pearson Intl Airport

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

Fastest flight time

Direct flights

Frequently asked questions about flying 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

United Airlines Flights From St. Louis to Toronto Pearson Intl Airport

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

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An easier way to manage your Toronto Pearson Intl Airport trip

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