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St. Louis

$173+ 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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
août 5 — août 121
mar. 8/5
mar. 8/12
1 adult, Economy
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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 juillet 31, 2025.

Round-trip from

$281
(Kiwi.com)

One-way from

$173
(Kiwi.com)

Popular in

August

Cheapest in

June

Average price

$493

Good round-trip deal

$576 or less

Good one-way deal

$279 or less
From Canada to Lambert-St Louis
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One-way flight from Canada to Lambert-St Louis
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Highest demand for flights based on searches. 4% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Canada to Lambert-St Louis.
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Price to beat on a one-way flight from Canada to Lambert-St Louis.
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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 juillet 31, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
dim. 9/148:55 amYYC - STL
1 stop23h 11mMultiple Airlines
dim. 9/217:55 pmSTL - YYC
1 stop19h 50mMultiple Airlines
Deal found 7/31$281
This Kiwi.com deal was found by Cheapflights users on 7/29. 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.
jeu. 8/2811:00 pmYVR - STL
1 stop11h 56mMultiple Airlines
mer. 9/107:55 pmSTL - YVR
2 stops22h 41mMultiple Airlines
Deal found 7/29$309
This American Airlines deal was found by Cheapflights users on 7/30. 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.
ven. 9/56:29 amYYC - STL
1 stop28h 01mAmerican Airlines
sam. 9/136:10 amSTL - YYC
1 stop18h 09mAmerican Airlines
Deal found 7/30$320
This Air Canada deal was found by Cheapflights users on 7/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 9/2411:25 pmYVR - STL
1 stop13h 53mAir Canada
sam. 9/279:15 amSTL - YVR
1 stop8h 49mAir Canada
Deal found 7/29$320
This American Airlines deal was found by Cheapflights users on 7/29. 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.
sam. 11/84:44 pmYYZ - STL
1 stop8h 12mAmerican Airlines
sam. 11/156:00 amSTL - YYZ
1 stop9h 04mAmerican Airlines
Deal found 7/29$321
This American Airlines deal was found by Cheapflights users on 7/29. 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.
jeu. 8/286:00 amYVR - STL
1 stop10h 29mAmerican Airlines
mer. 9/105:18 amSTL - YVR
1 stop7h 27mAmerican Airlines
Deal found 7/29$323
This American Airlines deal was found by Cheapflights users on 7/30. 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.
sam. 9/1312:31 pmYUL - STL
1 stop10h 22mAmerican Airlines
sam. 9/202:01 pmSTL - YUL
1 stop20h 45mAmerican Airlines
Deal found 7/30$326
This United Airlines deal was found by Cheapflights users on 7/30. 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.
sam. 9/137:00 amYVR - STL
1 stop7h 53mUnited Airlines
sam. 9/205:30 pmSTL - YVR
1 stop6h 48mUnited Airlines
Deal found 7/30$331
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/95:17 pmYEG - STL
1 stop23h 17mAlaska Airlines
mer. 9/243:35 pmSTL - YEG
1 stop20h 14mAlaska Airlines
Deal found 7/31$345
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 9/241:17 pmYVR - STL
2 stops23h 22mAlaska Airlines
sam. 9/276:00 amSTL - YVR
2 stops14h 17mAlaska Airlines
Deal found 7/29$346
This United Airlines deal was found by Cheapflights users on 7/31. 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.
mar. 9/93:17 pmYEG - STL
2 stops23h 27mUnited Airlines
sam. 9/275:28 pmSTL - YEG
2 stops21h 40mUnited Airlines
Deal found 7/31$349
This Air Canada deal was found by Cheapflights users on 7/29. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/122:15 pmYYZ - STL
Nonstop2h 03mAir Canada
dim. 9/144:05 pmSTL - YYZ
Nonstop1h 55mAir Canada
Deal found 7/29$352

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 juillet 31, 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

dim. 9/14

8:55 am-9:06 am

1 stop23h 11m

Lambert-St Louis

dim. 9/21

7:55 pm-2:45 pm

1 stop19h 50m

$281

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

jeu. 8/28

11:00 pm-12:56 pm

1 stop11h 56m

Lambert-St Louis

mer. 9/10

7:55 pm-4:36 pm

2 stops22h 41m

$309

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

ven. 9/5

6:29 am-11:30 am

1 stop28h 01m

Lambert-St Louis

sam. 9/13

6:10 am-11:19 pm

1 stop18h 09m

$320

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

mer. 9/24

11:25 pm-3:18 pm

1 stop13h 53m

Lambert-St Louis

sam. 9/27

9:15 am-4:04 pm

1 stop8h 49m

$320

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

jeu. 8/28

6:00 am-6:29 pm

1 stop10h 29m

Lambert-St Louis

mer. 9/10

5:18 am-10:45 am

1 stop7h 27m

$323

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

sam. 9/13

12:31 pm-9:53 pm

1 stop10h 22m

Lambert-St Louis

sam. 9/20

2:01 pm-11:46 am

1 stop20h 45m

$326

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

sam. 9/13

7:00 am-4:53 pm

1 stop7h 53m

Lambert-St Louis

sam. 9/20

5:30 pm-10:18 pm

1 stop6h 48m

$331

EdmontonSt. Louis

YEG - STL

YEGSTL

Edmonton

mar. 9/9

5:17 pm-5:34 pm

1 stop23h 17m

Lambert-St Louis

mer. 9/24

3:35 pm-10:49 am

1 stop20h 14m

$345

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

mer. 9/24

1:17 pm-2:39 pm

2 stops23h 22m

Lambert-St Louis

sam. 9/27

6:00 am-6:17 pm

2 stops14h 17m

$346

EdmontonSt. Louis

YEG - STL

YEGSTL

Edmonton

mar. 9/9

3:17 pm-3:44 pm

2 stops23h 27m

Lambert-St Louis

sam. 9/27

5:28 pm-2:08 pm

2 stops21h 40m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 60 results
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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 juillet 31, 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 juillet 31, 2025.

The most flights from CA0 to STL are scheduled on a Wednesday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 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 juillet 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and United 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave
WestJet
7.2
Good
2,978 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Crew

8.5

Boarding

8.1

Entertainment

7.1

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

YEG - SEA

Alaska airline excellent airline pilot smooth, landing, crew staff very nice friendly behave

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.

  • 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 $178 on Air Canada. Other airlines that offer cheap prices include American Airlines from $180 and Delta from $184 one-way.

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

    Most travelers choose Toronto Pearson Intl - Lambert-St Louis, Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis or Vancouver 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 Jazz (82%), Air Canada (81%) or United Airlines (72%) 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 $247. While the most popular route (Toronto Pearson Intl - Lambert-St Louis) can be booked for $375 on average our data indicates $497 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
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Alton
Chesterfield
Festus
Farmington

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Alternative routes for Canada to St. Louis

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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 juillet 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$294Average$443FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$309Average$516FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$324Average$517FlexibilityNo cancel feeOn-time67%
DeltaCheapest$452Average$511FlexibilityNo cancel feeOn-timeN/A

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