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$141+ Cheap flights from St. Louis (STL) to Canada

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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYZ
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from St. Louis to Canada

Keep the following information in mind while searching for St. Louis to Canada flight deals. Data was last updated June 12, 2025.

Round-trip from

$283
(Mytrip)

One-way from

$141
(American Airlines)

Popular in

March

Cheapest in

January

Average price

$397

Good round-trip deal

$692 or less

Good one-way deal

$177 or less
From Lambert-St Louis to Canada
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One-way flight from Lambert-St Louis to Canada
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Canada.
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Price to beat on a one-way flight from Lambert-St Louis to Canada.
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Find flight deals from St. Louis to Canada

Cheapest flights from St. Louis to Canada
Explore the most affordable flight options available from St. Louis to Canada. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/11. 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.
Thu 9/48:44 amSTL - YYC
1 stop10h 40mMultiple Airlines
Sat 9/139:15 amYYC - STL
1 stop21h 34mMultiple Airlines
Deal found 6/11$283
This Kiwi.com deal was found by Cheapflights users on 6/10. 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.
Mon 7/77:13 pmSTL - YVR
1 stop17h 22mMultiple Airlines
Wed 7/161:15 pmYVR - STL
1 stop18h 37mMultiple Airlines
Deal found 6/10$302
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Wed 7/911:24 amSTL - YYZ
2 stops25h 41mMultiple Airlines
Tue 7/156:30 amYYZ - STL
1 stop11h 01mMultiple Airlines
Deal found 6/10$302
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 9/155:55 amSTL - YYZ
1 stop10h 54mAmerican Airlines
Wed 9/1711:44 amYYZ - STL
1 stop11h 09mAmerican Airlines
Deal found 6/11$337
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 9/187:23 amSTL - YUL
1 stop8h 07mAmerican Airlines
Tue 9/235:15 pmYUL - STL
1 stop17h 11mAmerican Airlines
Deal found 6/11$340
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 8/121:24 pmSTL - YYC
1 stop11h 05mAmerican Airlines
Tue 8/196:29 amYYC - STL
1 stop14h 48mAmerican Airlines
Deal found 6/11$344
This Sun Country Air deal was found by Cheapflights users on 6/9. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/296:12 amSTL - YYZ
1 stop9h 38mSun Country Air
Thu 7/311:40 amYYZ - STL
1 stop24h 50mSun Country Air
Deal found 6/9$362
This Air Canada deal was found by Cheapflights users on 6/10. 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.
Sun 6/227:30 amSTL - YYZ
Nonstop1h 55mAir Canada
Thu 6/2611:30 amYYZ - STL
Nonstop2h 06mAir Canada
Deal found 6/10$372
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 6/205:20 amSTL - YYZ
1 stop8h 51mUnited Airlines
Fri 6/205:15 pmYYZ - STL
1 stop6h 30mUnited Airlines
Deal found 6/10$373
This Delta deal was found by Cheapflights users on 6/10. 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.
Fri 6/206:40 amSTL - YYZ
1 stop7h 01mDelta
Sat 6/213:31 pmYYZ - STL
1 stop5h 59mDelta
Deal found 6/10$397
This Mytrip deal was found by Cheapflights users on 6/10. 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.
Mon 7/1410:47 amSTL - YUL
2 stops30h 08mMultiple Airlines
Mon 7/218:55 amYUL - STL
3 stops32h 36mMultiple Airlines
Deal found 6/10$402
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Wed 7/911:24 amSTL - YOW
1 stop28h 42mMultiple Airlines
Wed 7/1611:00 amYOW - STL
2 stops23h 52mMultiple Airlines
Deal found 6/11$415

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Canada 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 June 12, 2025.
Use the filters below to find and compare flights from St. Louis to Canada that are best for you.

Fly from

St. Louis

Fly to

Canada

Route

Depart

Return

Price

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 9/4

8:44 am-6:24 pm

1 stop10h 40m

Calgary

Sat 9/13

9:15 am-7:49 am

1 stop21h 34m

$283

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Mon 7/7

7:13 pm-10:35 am

1 stop17h 22m

Vancouver Intl

Wed 7/16

1:15 pm-9:52 am

1 stop18h 37m

$302

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 7/9

11:24 am-2:05 pm

2 stops25h 41m

Toronto Pearson Intl

Tue 7/15

6:30 am-4:31 pm

1 stop11h 01m

$302

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 9/15

5:55 am-5:49 pm

1 stop10h 54m

Toronto Pearson Intl

Wed 9/17

11:44 am-9:53 pm

1 stop11h 09m

$337

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 8/12

1:24 pm-11:29 pm

1 stop11h 05m

Calgary

Tue 8/19

6:29 am-10:17 pm

1 stop14h 48m

$344

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 6/29

6:12 am-4:50 pm

1 stop9h 38m

Toronto Pearson Intl

Thu 7/3

11:40 am-11:30 am

1 stop24h 50m

$362

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 6/22

7:30 am-10:25 am

Nonstop1h 55m

Toronto Pearson Intl

Thu 6/26

11:30 am-12:36 pm

Nonstop2h 06m

$372

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 9/25

12:25 pm-9:02 pm

1 stop7h 37m

Toronto Pearson Intl

Sun 9/28

2:10 pm-2:27 pm

1 stop25h 17m

$394

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 7/14

10:47 am-5:55 pm

2 stops30h 08m

Montreal Pierre Elliott Trudeau Intl

Mon 7/21

8:55 am-4:31 pm

3 stops32h 36m

$402

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 7/9

11:24 am-5:06 pm

1 stop28h 42m

Ottawa

Wed 7/16

11:00 am-9:52 am

2 stops23h 52m

$415

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 60 results
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Best time to book a flight from St. Louis to Canada

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

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Canada (average of $243). Flying from St. Louis to Canada in July is currently the most expensive (average of $353). 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 STL to CA?

Find hourly flight availability from St. Louis to Canada. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

When flying from St. Louis to Canada, 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 St. Louis to Canada

Explore weekly flight availability from St. Louis to Canada. 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 June 12, 2025.

The most flights from STL to CA0 are scheduled on a Wednesday (4 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Canada by month

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

In terms of precipitation, rainfall in Canada ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Canada when rainfall is around 2.0 in.

Temperature in Canada by month

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

If weather is an important factor for your trip to Canada, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing Canada

Get insights into the airlines that provide service to Canada. 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 Canada. Reviews last updated June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and Finnair from St. Louis to Canada to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Finnair
7.6
Good
1,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Canada. 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 from for flights from St. Louis to Canada?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Canada.

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

    One-way options have recently been found by users for as low as $141 on American Airlines. Other airlines that offer cheap prices include Sun Country Air from $153 and Alaska Airlines from $177 one-way.

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

    The most popular flight routes from St. Louis to Canada are Lambert-St Louis - Toronto Pearson Intl, Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl and Lambert-St Louis - Vancouver Intl.

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

    No one likes to see their flight delayed. When booking a flight from St. Louis to Canada consider choosing United Airlines (73%), Air Canada (50%) or Jazz (37%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $177. While the most popular route (Lambert-St Louis - Toronto Pearson Intl) can be booked for $312 on average our data indicates $2,125 when flying from St. Louis to Canada.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Canada 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 St. Louis to Canada?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Canada (average of $243). Flying from St. Louis to Canada in July is currently the most expensive (average of $353). 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.

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Alternative routes for St. Louis to Canada

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from St. Louis to Canada

Discover the top 6 airlines that operate flights from St. Louis to Canada. 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$165Average$582FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$180Average$580FlexibilityNo cancel feeOn-time71%
DeltaCheapest$190Average$606FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$220Average$635FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$360Average$561FlexibilityNo cancel feeOn-time75%
WestJetCheapest$405Average$586FlexibilityNo cancel feeOn-time60%

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