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C$ 248+ Cheap flights to St. Louis

— STL
25 Nov — 2 Dec1
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

Wed 9/1210:40 a.m. -
2 stops49h 37m
Wed 16/126:20 p.m. -
1 stop18h 20m
Deal found 24/10C$ 536
Thu 17/127:14 a.m. -
1 stop9h 37m
Mon 21/126:00 a.m. -
1 stop10h 40m
Deal found 21/10C$ 566
Mon 21/121:20 p.m. -
1 stop10h 12m
Mon 28/126:00 a.m. -
1 stop10h 40m
Deal found 22/10C$ 567
Wed 18/113:15 p.m. -
1 stop8h 00m
Wed 25/115:00 a.m. -
1 stop8h 33m
Deal found 21/10C$ 576
Sun 22/113:15 p.m. -
1 stop9h 46m
Wed 2/1211:37 a.m. -
1 stop11h 04m
Deal found 21/10C$ 581
Tue 10/1112:44 p.m. -
1 stop9h 54m
Thu 12/116:00 a.m. -
1 stop7h 34m
Deal found 21/10C$ 583
Tue 1/123:15 p.m. -
1 stop7h 59m
Thu 17/125:07 a.m. -
1 stop8h 37m
Deal found 26/10C$ 588
Thu 3/1211:36 a.m. -
1 stop8h 13m
Sun 6/126:02 a.m. -
1 stop7h 40m
Deal found 21/10C$ 590
Sun 6/121:22 p.m. -
1 stop9h 55m
Sun 13/125:02 a.m. -
1 stop8h 40m
Deal found 22/10C$ 597
Tue 24/113:15 p.m. -
1 stop9h 46m
Tue 1/126:00 a.m. -
1 stop7h 33m
Deal found 25/10C$ 599
Wed 18/116:25 p.m. -
2 stops25h 14m
Wed 25/116:05 p.m. -
1 stop20h 13m
Deal found 21/10C$ 601
Thu 12/116:30 a.m. -
1 stop17h 46m
Mon 16/116:34 p.m. -
2 stops21h 36m
Deal found 24/10C$ 604

Find flight deals to St. Louis

Round-trip from

C$ 536

One-way from

C$ 248

Popular in

March

Cheapest in

January

Average price

C$ 997

Good round-trip deal

C$ 811 or less
9/12-16/12
  • 9/12-16/12
  • 3 total stops
  • 67h 57m total
  • Toronto to St. Louis
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7/12-31/12
  • 7/12-31/12
  • 2 total stops
  • 45h 52m total
  • Toronto to St. Louis
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Highest demand for flights based on searches. 11% potential increase in price (C$ 99 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease (C$ 47 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Toronto to Lambert-St Louis.
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Cheapflights Fare Finder

 
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 Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Mon 7/12

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

1 stop18h 42m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 318

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sun 6/12

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

1 stop18h 42m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 319

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 12/12

3:22 p.m.-10:25 p.m.

1 stop8h 03m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 325

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Sat 5/12

2:25 p.m.-12:12 a.m.

3 stops34h 47m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 336

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Thu 19/11

1:16 p.m.-10:14 p.m.

1 stop9h 58m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 340

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Thu 19/11

6:25 p.m.-5:40 p.m.

2 stops24h 15m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 375

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Thu 24/12

7:44 p.m.-10:42 a.m.

2 stops15h 58m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 420
Quickest round-trip

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Tue 3/11

7:09 a.m.-10:53 a.m.

1 stop4h 44m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 427

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Fri 25/12

2:35 p.m.-11:38 p.m.

1 stop10h 03m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 441

TorontoSt. Louis

YYZ Toronto Pearson Intl - STL Lambert-St Louis

YYZSTL

Toronto Pearson Intl

Tue 3/11

3:25 p.m.-5:40 p.m.

2 stops27h 15m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 443

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/10

Showing 1-10 of 23 resultsSorted by cheapest first
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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

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 13 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.

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

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

Air Canada
Air Canada
From C$ 189
United Airlines
United Airlines
From C$ 349
WestJet
WestJet
From C$ 427
Delta
Delta
From C$ 212

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

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

Rainfall in St. Louis 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

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).

When is the best time to book a flight to St. Louis?

The best time to book flights to St. Louis is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing St. Louis

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
11,815 reviews
Check prices

Comfort

7.1

Crew

7.8

Food

6.3

Boarding

7.3

Overall

7.1

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Sylvia,Aug 2026

YYZ - PHL

Our flight from Kelowna was 5 hours delayed. We missed our connection. We were able to get to a hotel by 3:00 a.m. but the breakfast cost us $40. The hotel was good. We were rescheduled for the flight the next night when it was canceled. There were no hotel vouchers available which didn't matter because there were no hotel rooms available. We decided to just drive which was not easy doing a one-way rental to the United States. Worst possible trip I've ever had
Air Canada
7.1
Good
11,815 reviews
Air Canada
7.1
Good
11,815 reviews
Check prices

Comfort

7.1

Crew

7.8

Food

6.3

Boarding

7.3

Overall

7.1

Entertainment

6.8

Reviews

1 / 20
2.0
Mediocre

Sylvia,Aug 2026

YYZ - PHL

Our flight from Kelowna was 5 hours delayed. We missed our connection. We were able to get to a hotel by 3:00 a.m. but the breakfast cost us $40. The hotel was good. We were rescheduled for the flight the next night when it was canceled. There were no hotel vouchers available which didn't matter because there were no hotel rooms available. We decided to just drive which was not easy doing a one-way rental to the United States. Worst possible trip I've ever had

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.

  • 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$ 82, while round-trip flights cost around C$ 220.

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

    A round-trip flight to St. Louis will typically cost around C$ 599, however they can be found for as little as C$ 220.

  • 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 13 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. Hampton Inn St. Louis-Airport 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?

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Chesterfield

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