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St. Louis

$154+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
abr. 22 — abr. 291
mar. 4/22
mar. 4/29
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 abril 17, 2025.

Round-trip from

$303
(Kiwi.com)

One-way from

$154
(Kiwi.com)

Popular in

January

Cheapest in

November

Average price

$516

Good round-trip deal

$370 or less

Good one-way deal

$310 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. 3% potential increase in price ($17 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in April 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 abril 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
mié. 5/77:00 amYYC - STL
2 stops16h 06mMultiple Airlines
lun. 5/129:55 pmSTL - YYC
1 stop14h 55mMultiple Airlines
Deal found 4/17$303
This American Airlines deal was found by Cheapflights users on 4/17. 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.
sáb. 5/316:45 amYYC - STL
1 stop11h 44mAmerican Airlines
sáb. 6/76:00 amSTL - YYC
1 stop18h 29mAmerican Airlines
Deal found 4/17$305
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
vie. 5/96:45 amYUL - STL
2 stops27h 30mMultiple Airlines
lun. 5/125:45 pmSTL - YUL
1 stop19h 35mMultiple Airlines
Deal found 4/16$305
This Air Canada deal was found by Cheapflights users on 4/17. 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.
mié. 5/76:15 amYYC - STL
1 stop5h 30mAir Canada
lun. 5/121:30 pmSTL - YYC
1 stop10h 36mAir Canada
Deal found 4/17$307
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
mié. 5/75:35 pmYVR - STL
1 stop25h 30mMultiple Airlines
sáb. 5/108:15 pmSTL - YVR
2 stops22h 03mMultiple Airlines
Deal found 4/16$323
This United Airlines deal was found by Cheapflights users on 4/16. 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.
mié. 5/77:00 amYVR - STL
1 stop7h 52mUnited Airlines
sáb. 5/107:00 amSTL - YVR
1 stop13h 56mUnited Airlines
Deal found 4/16$333
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/316:30 amYYC - STL
2 stops13h 09mDelta
sáb. 6/711:32 amSTL - YYC
2 stops12h 29mDelta
Deal found 4/17$340
This American Airlines deal was found by Cheapflights users on 4/16. 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.
sáb. 5/316:00 amYVR - STL
1 stop11h 29mAmerican Airlines
sáb. 6/73:08 pmSTL - YVR
1 stop9h 52mAmerican Airlines
Deal found 4/16$340
This Kiwi.com deal was found by Cheapflights users on 4/17. 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.
sáb. 5/243:50 pmYOW - STL
1 stop18h 25mMultiple Airlines
sáb. 5/3110:10 amSTL - YOW
1 stop30h 05mMultiple Airlines
Deal found 4/17$350
This Mytrip deal was found by Cheapflights users on 4/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 5/239:00 amYWG - STL
2 stops9h 41mMultiple Airlines
jue. 5/2910:10 amSTL - YWG
2 stops14h 03mMultiple Airlines
Deal found 4/15$372
This United Airlines deal was found by Cheapflights users on 4/17. 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.
mié. 5/2111:30 amYYZ - STL
Nonstop2h 06mUnited Airlines
mar. 5/278:10 amSTL - YYZ
1 stop9h 22mUnited Airlines
Deal found 4/17$375
This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/177:35 pmYVR - STL
2 stops10h 57mDelta
dom. 7/202:15 pmSTL - YVR
1 stop10h 09mDelta
Deal found 4/15$375

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 abril 17, 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

mié. 5/7

7:00 am-12:06 am

2 stops16h 06m

Lambert-St Louis

lun. 5/12

9:55 pm-11:50 am

1 stop14h 55m

$303

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

sáb. 5/31

6:45 am-7:29 pm

1 stop11h 44m

Lambert-St Louis

sáb. 6/7

6:00 am-11:29 pm

1 stop18h 29m

$305

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

vie. 5/9

6:45 am-9:15 am

2 stops27h 30m

Lambert-St Louis

lun. 5/12

5:45 pm-2:20 pm

1 stop19h 35m

$305

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

mié. 5/7

6:15 am-12:45 pm

1 stop5h 30m

Lambert-St Louis

lun. 5/12

1:30 pm-11:06 pm

1 stop10h 36m

$307

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

mié. 5/7

5:35 pm-9:05 pm

1 stop25h 30m

Lambert-St Louis

sáb. 5/10

8:15 pm-4:18 pm

2 stops22h 03m

$323

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

mié. 5/7

7:00 am-4:52 pm

1 stop7h 52m

Lambert-St Louis

sáb. 5/10

7:00 am-6:56 pm

1 stop13h 56m

$333

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

sáb. 5/31

6:30 am-8:39 pm

2 stops13h 09m

Lambert-St Louis

sáb. 6/7

11:32 am-11:01 pm

2 stops12h 29m

$340

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

sáb. 5/31

6:00 am-7:29 pm

1 stop11h 29m

Lambert-St Louis

sáb. 6/7

3:08 pm-11:00 pm

1 stop9h 52m

$340

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

sáb. 5/24

3:50 pm-9:15 am

1 stop18h 25m

Lambert-St Louis

sáb. 5/31

10:10 am-5:15 pm

1 stop30h 05m

$350

WinnipegSt. Louis

YWG - STL

YWGSTL

Winnipeg

vie. 5/23

9:00 am-6:41 pm

2 stops9h 41m

Lambert-St Louis

jue. 5/29

10:10 am-12:13 am

2 stops14h 03m

$372

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

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 abril 17, 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.

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 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 abril 17, 2025.
To help decide which airline to fly from Canada to St. Louis, see what other customers have to say about Alaska Airlines, Delta and United Airlines. 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
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,887 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,916 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,667 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
WestJet
7.2
Good
2,809 reviews
Alaska Airlines
8.0
Very good
9,887 reviews

Overall

8.0

Food

7.1

Boarding

8.1

Entertainment

7.1

Comfort

7.9

Crew

8.5

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 $175 on United Airlines. Other airlines that offer cheap prices include Delta from $180 and Air Canada from $184 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 Calgary - 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 (79%), Jazz (79%) or United Airlines (79%) 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 $308 on average our data indicates $395 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 Canada?

Book flights to Canada if you plan to visit one of these locations
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

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Alternative routes for Canada to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 abril 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$285Average$545FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$294Average$536FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$309Average$516FlexibilityNo cancel feeOn-time71%
DeltaCheapest$452Average$511FlexibilityNo cancel feeOn-timeN/A

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