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C$ 270+ Cheap flights to St. Louis

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/4. Fares are subject to change and may not be available on all flights or dates of travel.
— STL
14 Apr — 21 Apr1
1 adult
1 adult, Economy, 0 bags

Flights to St. Louis in 2026

Enter your travel dates to find the best prices.

Cheapest flights to St. Louis
Explore the most affordable flight options available to St. Louis. Find the lowest fares based on data from user searches, with prices last updated on 15 March 2026.

Wed 27/57:20 a.m.
YYZ
-
STL
1 stop10h 10m
American Airlines
Wed 10/62:36 p.m.
STL
-
YYZ
1 stop7h 53m
American Airlines
Deal found 10/3C$ 490
Wed 15/411:33 a.m.
YYZ
-
STL
1 stop11h 44m
American Airlines
Wed 29/412:27 p.m.
STL
-
YYZ
1 stop10h 02m
American Airlines
Deal found 10/3C$ 513
Mon 6/46:00 a.m.
YYZ
-
STL
1 stop8h 43m
American Airlines
Wed 8/45:51 a.m.
STL
-
YYZ
1 stop7h 42m
American Airlines
Deal found 11/3C$ 549
Mon 13/47:10 a.m.
YYZ
-
STL
1 stop17h 15m
Multiple Airlines
Mon 20/48:23 p.m.
STL
-
YYZ
2 stops16h 42m
Multiple Airlines
Deal found 13/3C$ 550
Wed 25/37:10 a.m.
YYZ
-
STL
1 stop17h 09m
Multiple Airlines
Fri 27/34:51 p.m.
STL
-
YYZ
1 stop20h 29m
Multiple Airlines
Deal found 10/3C$ 553
Tue 7/47:10 a.m.
YYZ
-
STL
1 stop17h 15m
Multiple Airlines
Thu 16/49:55 p.m.
STL
-
YYZ
2 stops20h 41m
Multiple Airlines
Deal found 13/3C$ 554
Mon 20/411:33 a.m.
YYZ
-
STL
1 stop13h 13m
American Airlines
Wed 22/412:27 p.m.
STL
-
YYZ
1 stop10h 02m
American Airlines
Deal found 11/3C$ 556
Mon 23/37:10 a.m.
YYZ
-
STL
1 stop17h 09m
Multiple Airlines
Wed 25/34:51 p.m.
STL
-
YYZ
1 stop20h 25m
Multiple Airlines
Deal found 10/3C$ 561
Sat 25/46:15 a.m.
YYZ
-
STL
1 stop10h 45m
American Airlines
Mon 27/45:51 a.m.
STL
-
YYZ
1 stop10h 52m
American Airlines
Deal found 11/3C$ 569
Thu 26/37:10 a.m.
YYZ
-
STL
1 stop17h 09m
Multiple Airlines
Fri 27/34:51 p.m.
STL
-
YYZ
1 stop20h 29m
Multiple Airlines
Deal found 10/3C$ 571
Wed 15/47:10 a.m.
YYZ
-
STL
1 stop17h 09m
Multiple Airlines
Wed 29/48:23 p.m.
STL
-
YYZ
2 stops38h 12m
Multiple Airlines
Deal found 10/3C$ 572
Wed 25/37:10 a.m.
YYZ
-
STL
1 stop17h 09m
Multiple Airlines
Thu 26/34:51 p.m.
STL
-
YYZ
1 stop20h 25m
Multiple Airlines
Deal found 10/3C$ 573

Find flight deals to St. Louis

Find the latest flights to St. Louis in 2026, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 15 March 2026.

Round-trip from

C$ 490

One-way from

C$ 270

Popular in

March

Cheapest in

June

Average price

C$ 1,269

Good round-trip deal

C$ 694 or less
American Airlines
  • American Airlines
  • 27/5-10/6
  • 2 total stops
  • 18h 03m total
  • Toronto to St. Louis
Search Deals
23/4
  • 23/4
  • 2 total stops
  • 35h 50m total
  • Toronto to St. Louis
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 171 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (C$ 55 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Toronto to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Locate flights to St. Louis that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 629,999 searches and data was last updated on 15 March 2026.
Use the filters below to find and compare flights to St. Louis that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 14/4

10:15 a.m.-9:13 p.m.

1 stop11h 58m

Lambert-St Louis

Wed 15/4

6:30 a.m.-6:58 p.m.

1 stop11h 28m

C$ 620

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 4/6

7:20 a.m.-2:06 p.m.

1 stop7h 46m

Lambert-St Louis

Mon 8/6

9:23 a.m.-6:45 p.m.

1 stop8h 22m

C$ 639

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 14/5

7:30 a.m.-4:39 p.m.

2 stops10h 09m

Lambert-St Louis

Sat 20/6

5:41 p.m.-11:59 p.m.

1 stop5h 18m

C$ 672

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 26/4

2:10 p.m.-3:25 p.m.

Nonstop2h 15m

Lambert-St Louis

Wed 29/4

9:10 a.m.-5:56 p.m.

1 stop7h 46m

C$ 737
Quickest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 17/5

6:55 p.m.-8:04 p.m.

Nonstop2h 09m

Lambert-St Louis

Sun 24/5

7:05 a.m.-9:56 a.m.

Nonstop1h 51m

C$ 766

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 3/4

2:10 p.m.-3:25 p.m.

Nonstop2h 15m

Lambert-St Louis

Sun 5/4

10:00 a.m.-4:43 p.m.

1 stop5h 43m

C$ 803

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 31/3

12:45 p.m.-9:08 p.m.

2 stops9h 23m

Lambert-St Louis

Mon 6/4

6:55 p.m.-11:59 p.m.

1 stop4h 04m

C$ 811
Cheapest one-way

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 28/4

11:33 a.m.-7:33 p.m.

1 stop9h 00m

C$ 340

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 24/4

6:10 a.m.-8:44 p.m.

1 stop15h 34m

C$ 359

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 14/4

2:10 p.m.-3:25 p.m.

Nonstop2h 15m

C$ 362

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/3

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

Best time to book a flight to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight to St. Louis

How long is the flight to St. Louis?

On average, a flight from Toronto to St. Louis takes 2 hours 6 minutes. Flights to St. Louis from other popular cities in Canada will vary in length. Below are a few examples of popular routes and their flight times.

Weekly flight availability to St. Louis

The most flights from Toronto to St. Louis are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

What are the most popular airlines that fly to St. Louis?

The most popular airlines flying from Toronto to St. Louis are Air Canada, United Airlines and American Airlines.

Air Canada
Air Canada
From C$ 211
United Airlines
United Airlines
From C$ 330
WestJet
WestJet
From C$ 554
American Airlines
American Airlines
From C$ 273

What are the cheapest airlines that fly to St. Louis?

The cheapest airlines flying from Toronto to St. Louis are United Airlines, American Airlines and Air Canada.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated 15 March 2026.
Read through reviews of airlines serving the United States, such as Air Canada. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,801 reviews
Check prices

Overall

7.1

Crew

7.8

Entertainment

6.8

Boarding

7.3

Food

6.3

Comfort

7.1

Reviews

1 / 20
2.0
Mediocre

Sugith,Jan 2026

YYZ - YSB

8 am flight cancelled at 2 am. Rebooked next day. Had to pay to rebook myself on Porter to leave same day.
Air Canada
7.1
Good
10,801 reviews
Air Canada
7.1
Good
10,801 reviews
Check prices

Overall

7.1

Crew

7.8

Entertainment

6.8

Boarding

7.3

Food

6.3

Comfort

7.1

Reviews

1 / 20
2.0
Mediocre

Sugith,Jan 2026

YYZ - YSB

8 am flight cancelled at 2 am. Rebooked next day. Had to pay to rebook myself on Porter to leave same day.

FAQs about flying to St. Louis

St. Louis climate

St Louis has moderate, seasonal weather, but storms can occur at any time of the year. July and August are the hottest and most humid months of the year, and January and February are cold, usually with snow. Winter temperatures range from below 0 to 13 degrees (C), while summers have daily temperatures of between 14 to 32 degrees. 

Getting around St. Louis

You won’t need a car in downtown St Louis. You can get almost anywhere downtown with the St Louis MetroLink, which hits most of the area’s tourist attractions. There are even some shuttle buses connecting the MetroLink stations to the attractions. MetroBus, which is part of the same system, can get you farther out into the city. Rent a car if you’d like. St Louis is easy to navigate and you can take the highways out to top tourist neighbourhoods like University City, Central West End and Clayton. Most hotels and tourist attractions have a taxi stand if you need a cab. You can also call for a taxi ahead of time. 

What is good to know if travelling to St. Louis?

  • Independence Day is celebrated with style in St. Louis. Grab a blanket and a couple chairs and head down to the riverfront for Fourth of July festivities. Grab a spot underneath the Arch and enjoy the spectacle. From people watching, to concerts and outdoor vendors and markets, there is much to do to celebrate America’s birthday. And of course, an amazing fireworks display happens on the riverfront.
  • St. Louis’ Soulard Market Place is home to the best outdoor markets in the city, and also one of the best Mardi Gras party’s in the Midwest.
  • The Butterfly Garden in St. Louis’ suburb, Chesterfield, is a must-see for travellers of any age. Located in Faust Park about 30 minutes west of St. Louis City, the Butterfly Garden is a delight for everyone.
  • You don’t have to be a baseball fan to appreciate Busch Stadium. Take a tour of the Stadium or take in a game.
  • Beer lovers know St. Louis as the home of Anheuser-Busch. Brewed right in the city center, the Anheuser-Busch Brewery offers daily tours, and of course, beer tastings. 

  • When is the best time to fly to St. Louis?

    Peak Season Summers in St. Louis are hot and humid, but this is also the best time to visit if you want to take part in the riverfront activities. St. Louis is a big baseball town, and the St. Louis Cardinals draw thousands of fans a year. If you’re planning to visit St. Louis during the spring and summer seasons, book flights early and make accommodations ahead of time. The city gets full fast. Off Season St. Louis is prone to long, cold winters.  The city all but shuts down during the wintertime and while many tourist attractions are open to the public, none of the outside activities are much fun in the snow. However, if you’re heading to St. Louis for some football time or to explore the excellent museums, you’re likely to find a cheap flight to St. Louis in the winter.

  • What airport do you fly into for flights to St. Louis?

    If you book a flight to St. Louis, you will be flying into Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 20.4 km from the centre of St. Louis. On average, Lambert-St Louis has 2 flights from Toronto per day from 5 airlines.

  • Can I find cheaper flights to St. Louis if I am willing to have layovers?

    Yes, flights with layovers are often cheaper than direct flights. Keep an eye out for flight deals to St. Louis on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to St. Louis?

    Based on reviews from Cheapflights users, Air Canada is rated the highest out of the airlines that fly to St. Louis.

  • What is the cheapest airport to fly to in St. Louis?

    Lambert-St Louis is currently the cheapest airport to fly to in St. Louis. One-way flights to Lambert-St Louis typically cost C$ 122, while round-trip flights cost around C$ 272.

  • How much is a round-trip flight to St. Louis?

    A round-trip flight to St. Louis will typically cost around C$ 484, however they can be found for as little as C$ 277.

  • Where does the fastest flight to St. Louis depart from?

    For those looking to save time traveling to St. Louis, Toronto offers the quickest one-way flight (2 hours 6 minutes).

  • Does Lambert-St Louis have rental cars?

    Yes. Those touching down at Lambert-St Louis can take advantage of the rental car services offered upon their arrival.

  • Are there hotels close to Lambert-St Louis?

    Yes. Lambert-St Louis has hotels nearby for those requiring accommodations. 3-bedroom building in serene Saint Ann with WiFi, AC is the closest property to Lambert-St Louis (0.0 km away from Lambert-St Louis).

See more FAQs

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Chesterfield

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