HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$131+ Cheap flights from Canada to St. Louis (STL)

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
out 15 — out 221
qua 10/15
qua 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Canada to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Canada to St. Louis

Keep the following information in mind while searching for Canada to St. Louis flight deals. Data was last updated setembro 15, 2025.

Round-trip from

$261
(American Airlines)

One-way from

$131
(Kiwi.com)

Popular in

January

Cheapest in

June

Average price

$503

Good round-trip deal

$405 or less

Good one-way deal

$283 or less
From Canada to Lambert-St Louis
Search Deals
One-way flight from Canada to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals
Price to beat on a round-trip flight from Canada to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Canada to Lambert-St Louis.
Search Deals

Find flight deals from Canada to St. Louis

Cheapest flights from Canada to St. Louis
Explore the most affordable flight options available from Canada to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on setembro 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 10/101:29 pmYYC - STL
1 stop17h 40mAmerican Airlines
seg 10/134:34 pmSTL - YYC
1 stop21h 00mAmerican Airlines
Deal found 9/13$261
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 11/131:30 pmYVR - STL
2 stops22h 27mMultiple Airlines
seg 11/172:42 pmSTL - YVR
1 stop11h 33mMultiple Airlines
Deal found 9/14$267
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/309:45 amYYZ - STL
1 stop29h 12mMultiple Airlines
qui 11/66:22 pmSTL - YYZ
2 stops43h 18mMultiple Airlines
Deal found 9/14$287
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 10/2010:40 amYYZ - STL
2 stops23h 27mMultiple Airlines
qui 10/2310:57 amSTL - YYZ
1 stop26h 08mMultiple Airlines
Deal found 9/15$297
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/161:28 pmYVR - STL
1 stop16h 41mAmerican Airlines
qua 10/228:04 pmSTL - YVR
1 stop18h 26mAmerican Airlines
Deal found 9/14$300
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qua 10/153:17 pmYEG - STL
2 stops18h 32mUnited Airlines
qua 10/226:30 amSTL - YEG
2 stops16h 34mUnited Airlines
Deal found 9/15$302
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
qui 10/2312:30 amYYC - STL
1 stop8h 46mMultiple Airlines
dom 10/265:15 pmSTL - YYC
2 stops25h 00mMultiple Airlines
Deal found 9/13$310
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
seg 9/294:00 pmYYZ - STL
2 stops27h 36mMultiple Airlines
qui 10/210:35 amSTL - YYZ
1 stop9h 20mMultiple Airlines
Deal found 9/15$324
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 11/145:30 pmYVR - STL
2 stops13h 37mMultiple Airlines
seg 11/172:42 pmSTL - YVR
1 stop11h 33mMultiple Airlines
Deal found 9/14$326
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 11/169:10 amYVR - STL
1 stop24h 14mMultiple Airlines
ter 11/187:45 pmSTL - YVR
2 stops22h 46mMultiple Airlines
Deal found 9/14$327
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom 9/288:55 amYYC - STL
1 stop23h 11mMultiple Airlines
qua 10/17:55 pmSTL - YYC
2 stops22h 22mMultiple Airlines
Deal found 9/15$329
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ter 10/146:45 amYYC - STL
1 stop13h 08mAmerican Airlines
ter 10/218:04 pmSTL - YYC
1 stop17h 30mAmerican Airlines
Deal found 9/15$332

Cheapflights Fare Finder

 
Customize your flight search to find flights from Canada to St. Louis 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, Cheapflights users made 2,558,603 searches. Data last updated setembro 15, 2025.
Use the filters below to find and compare flights from Canada to St. Louis that are best for you.

Fly from

Canada

Fly to

St. Louis

Route

Depart

Return

Price

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

sex 10/10

1:29 pm-8:09 am

1 stop17h 40m

Lambert-St Louis

seg 10/13

4:34 pm-12:34 pm

1 stop21h 00m

$261

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

qui 11/13

5:30 pm-1:57 pm

1 stop18h 27m

Lambert-St Louis

seg 11/17

2:42 pm-12:15 am

1 stop11h 33m

$284

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

qui 10/30

9:45 am-1:57 pm

1 stop29h 12m

Lambert-St Louis

qui 11/6

6:22 pm-2:40 pm

2 stops43h 18m

$287

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

qui 10/16

1:28 pm-8:09 am

1 stop16h 41m

Lambert-St Louis

qua 10/22

8:04 pm-12:30 pm

1 stop18h 26m

$300

EdmontonSt. Louis

YEG - STL

YEGSTL

Edmonton

qua 10/15

3:17 pm-10:49 am

2 stops18h 32m

Lambert-St Louis

qua 10/22

6:30 am-10:04 pm

2 stops16h 34m

$302

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

qui 10/23

12:30 am-10:16 am

1 stop8h 46m

Lambert-St Louis

dom 10/26

5:15 pm-5:15 pm

2 stops25h 00m

$310

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

sex 11/14

5:30 pm-9:07 am

2 stops13h 37m

Lambert-St Louis

seg 11/17

2:42 pm-12:15 am

1 stop11h 33m

$326

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

dom 9/28

8:55 am-9:06 am

1 stop23h 11m

Lambert-St Louis

qua 10/1

7:55 pm-5:17 pm

2 stops22h 22m

$329

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

ter 10/14

6:45 am-8:53 pm

1 stop13h 08m

Lambert-St Louis

ter 10/21

8:04 pm-12:34 pm

1 stop17h 30m

$332

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

sáb 11/15

7:36 pm-9:46 am

2 stops12h 10m

Lambert-St Louis

ter 11/18

12:49 pm-11:59 pm

2 stops13h 10m

$342

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Canada to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Canada 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 from Canada to St. Louis

What is the cheapest month to book a flight from Canada to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Canada to St. Louis (average of $311). Flying from Canada to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CA to STL?

Find hourly flight availability from Canada to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated setembro 15, 2025.

When flying from Canada to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Canada to St. Louis

Explore weekly flight availability from Canada to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated setembro 15, 2025.

The most flights from CA0 to STL are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

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 setembro 15, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Canada to St. Louis. 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.
Delta
8.0
Very good
7,954 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
United Airlines
7.4
Good
8,929 reviews
Delta
8.0
Very good
7,954 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,954 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others
Air Canada
7.1
Good
10,000 reviews
Delta
8.0
Very good
7,954 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Boarding

8.2

Reviews

1 / 20
6.0
Good

Morgan Rae,Aug 2025

BRU - JFK

Typically I choose delta because they do a great job but this time the flight attendant in my zone was very rude and didnt offer the same treatment as she did to others

Related info for your journey

Find useful and relevant information for your journey from Canada to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Most people fly into Lambert-St Louis (STL) if they book a flight to St. Louis from Canada. Lambert-St Louis is conveniently located just 12.7 mi from St. Louis’s city center.

  • How long is the flight from Canada to St. Louis?

    There are many flights that can get you from Canada to St. Louis in 12h 10m. Fly via American Airlines, United Airlines, or Delta to get the fastest option. The distance from Canada to St. Louis is about 1765 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Canada to St. Louis one-way?

    One-way options have recently been found by users for as low as $160 on American Airlines. Other airlines that offer cheap prices include United Airlines from $195 and Air Canada from $313 one-way.

  • What are the most popular routes from Canada to St. Louis?

    Most travelers choose Toronto Pearson Intl - Lambert-St Louis, Vancouver Intl - Lambert-St Louis or Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis when deciding on the best route from Canada to St. Louis.

  • What are the most reliable airlines from Canada to St. Louis?

    Consider Air Canada (75%), Jazz (75%) or United Airlines (75%) when booking your flight. These represent the most reliable airlines when flying from Canada to St. Louis.

  • What are the cheapest flights from Canada to St. Louis?

    Looking at all options, your cheapest flight can be booked for $213. While the most popular route (Toronto Pearson Intl - Lambert-St Louis) can be booked for $284 on average, our data indicates $566 when flying from Canada to St. Louis.

  • Can I find deals for flights from Canada to St. Louis that include hotel bookings?

    Yes. In addition to deals on Canada to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Canada to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Canada to St. Louis.

  • Can I find deals for business class flights from Canada to St. Louis?

    Yes. Cheapflights offers flight deals from Canada to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Canada to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Canada to St. Louis (average of $311). Flying from Canada to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Canada to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Kansas City flights
Newark to Kansas City flights
John F Kennedy Intl to St. Louis flights
LaGuardia to St. Louis flights
Newark to St. Louis flights
LaGuardia to Kansas City flights
Los Angeles to Kansas City flights
Dallas/Fort Worth to St. Louis flights
Detroit to Kansas City flights
Dulles Intl to Kansas City flights
Dallas/Fort Worth to Kansas City flights
Boston to St. Louis flights
Seattle to Kansas City flights
O'Hare Intl to Kansas City flights
Denver to Kansas City flights
Boston to Kansas City flights
Seattle to St. Louis flights
Baltimore to Kansas City flights
Dulles Intl to St. Louis flights
Atlanta to Kansas City flights
Atlanta to St. Louis flights
Reagan-National to St. Louis flights
Denver to St. Louis flights
San Francisco to St. Louis flights
Baltimore to St. Louis flights
Reagan-National to Kansas City flights
Los Angeles to St. Louis flights
Philadelphia to Kansas City flights
Orlando to St. Louis flights
Philadelphia to St. Louis flights
Hobby to Kansas City flights
San Francisco to Kansas City flights
Minneapolis to St. Louis flights
Orlando to Kansas City flights
Sky Harbor Intl to Kansas City flights
Minneapolis to Kansas City flights
Hobby to St. Louis flights
George Bush Intcntl to Kansas City flights
Tampa to Kansas City flights
O'Hare Intl to St. Louis flights
Austin to Kansas City flights
Salt Lake City to Kansas City flights
Love Field to St. Louis flights
Charlotte to Kansas City flights
Ontario to Kansas City flights
Portland to St. Louis flights
Love Field to Kansas City flights
Sky Harbor Intl to St. Louis flights
Detroit to St. Louis flights
Midway to Kansas City flights

Top 4 airlines flying from Canada to St. Louis

Discover the top 4 airlines that operate flights from Canada to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated setembro 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$295Average$457FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$309Average$516FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$324Average$578FlexibilityNo cancel feeOn-time67%
DeltaCheapest$452Average$511FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.