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$124+ 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 8/14. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYZ
ago. 3 — ago. 101
dom. 8/3
dom. 8/10
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 julio 29, 2025.

Round-trip from

$284
(Kiwi.com)

One-way from

$124
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$489

Good round-trip deal

$648 or less

Good one-way deal

$356 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 ($14 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 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 julio 29, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/27. 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. 8/233:02 pmSTL - YVR
1 stop22h 13mMultiple Airlines
mié. 9/38:30 pmYVR - STL
2 stops16h 34mMultiple Airlines
Deal found 7/27$284
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
jue. 9/47:55 pmSTL - YYC
1 stop19h 50mMultiple Airlines
dom. 9/74:20 pmYYC - STL
1 stop15h 46mMultiple Airlines
Deal found 7/27$297
This American Airlines deal was found by Cheapflights users on 7/28. 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.
mié. 9/39:56 amSTL - YYC
1 stop14h 23mAmerican Airlines
mié. 9/106:29 amYYC - STL
1 stop14h 24mAmerican Airlines
Deal found 7/28$327
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
jue. 8/212:02 pmSTL - YYZ
1 stop7h 42mMultiple Airlines
dom. 8/248:00 pmYYZ - STL
1 stop19h 21mMultiple Airlines
Deal found 7/27$328
This American Airlines deal was found by Cheapflights users on 7/27. 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.
mar. 8/266:06 amSTL - YYZ
1 stop10h 35mAmerican Airlines
mar. 9/23:14 pmYYZ - STL
1 stop8h 03mAmerican Airlines
Deal found 7/27$331
This American Airlines deal was found by Cheapflights users on 7/27. 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.
mié. 9/106:10 amSTL - YUL
1 stop9h 23mAmerican Airlines
mié. 9/1712:31 pmYUL - STL
1 stop10h 22mAmerican Airlines
Deal found 7/27$334
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.
mié. 11/54:05 pmSTL - YVR
1 stop10h 47mAir Canada
mar. 11/1111:00 pmYVR - STL
1 stop14h 29mAir Canada
Deal found 7/29$350
This Delta deal was found by Cheapflights users on 7/27. 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.
mar. 8/262:25 pmSTL - YVR
2 stops10h 33mDelta
mié. 9/36:20 amYVR - STL
2 stops12h 56mDelta
Deal found 7/27$353
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/275:15 amSTL - YVR
1 stop6h 36mUnited Airlines
sáb. 9/271:45 pmYVR - STL
1 stop6h 50mUnited Airlines
Deal found 7/29$386
This Mytrip deal was found by Cheapflights users on 7/27. 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.
dom. 9/710:35 amSTL - YUL
2 stops12h 52mMultiple Airlines
vie. 11/149:25 amYUL - STL
2 stops8h 10mMultiple Airlines
Deal found 7/27$387
This Alaska Airlines deal was found by Cheapflights users on 7/27. 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.
sáb. 8/236:00 amSTL - YVR
1 stop8h 48mAlaska Airlines
sáb. 8/306:00 amYVR - STL
1 stop6h 39mAlaska Airlines
Deal found 7/27$405
This Kiwi.com deal was found by Cheapflights users on 7/27. 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. 8/222:01 pmSTL - YEG
2 stops24h 56mMultiple Airlines
lun. 8/2511:15 amYEG - STL
1 stop11h 44mMultiple Airlines
Deal found 7/27$412

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 julio 29, 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. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

sáb. 8/23

3:02 pm-11:15 am

1 stop22h 13m

Vancouver Intl

mié. 9/3

8:30 pm-3:04 pm

2 stops16h 34m

$284

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

jue. 9/4

7:55 pm-2:45 pm

1 stop19h 50m

Calgary

dom. 9/7

4:20 pm-9:06 am

1 stop15h 46m

$297

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

mié. 9/3

9:56 am-11:19 pm

1 stop14h 23m

Calgary

mié. 9/10

6:29 am-9:53 pm

1 stop14h 24m

$327

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

jue. 8/21

2:02 pm-10:44 pm

1 stop7h 42m

Toronto Pearson Intl

dom. 8/24

8:00 pm-2:21 pm

1 stop19h 21m

$328

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

mar. 8/26

6:06 am-5:41 pm

1 stop10h 35m

Toronto Pearson Intl

mar. 9/2

3:14 pm-10:17 pm

1 stop8h 03m

$331

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

mié. 9/10

6:10 am-4:33 pm

1 stop9h 23m

Montreal Pierre Elliott Trudeau Intl

mié. 9/17

12:31 pm-9:53 pm

1 stop10h 22m

$334

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

mar. 8/26

2:25 pm-10:58 pm

2 stops10h 33m

Vancouver Intl

mié. 9/3

6:20 am-9:16 pm

2 stops12h 56m

$353

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

dom. 9/7

10:35 am-12:27 am

2 stops12h 52m

Montreal Pierre Elliott Trudeau Intl

vie. 11/14

9:25 am-4:35 pm

2 stops8h 10m

$387

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

sáb. 8/23

4:00 pm-12:55 am

1 stop10h 55m

Vancouver Intl

mié. 9/3

8:50 am-7:57 pm

1 stop9h 07m

$397

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

sáb. 8/23

6:00 am-12:48 pm

1 stop8h 48m

Vancouver Intl

sáb. 8/30

6:00 am-2:39 pm

1 stop6h 39m

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 August is currently the most expensive (average of $348). 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 julio 29, 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 julio 29, 2025.

The most flights from STL to CA0 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 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 julio 29, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United Airlines from St. Louis to Canada by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
WestJet
7.2
Good
2,973 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 $137 on American Airlines. Other airlines that offer cheap prices include Delta from $152 and Air Canada from $176 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 - Calgary.

  • 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 (80%), Air Canada (78%) or Jazz (75%) 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 $237. While the most popular route (Lambert-St Louis - Toronto Pearson Intl) can be booked for $374 on average our data indicates $1,845 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 August is currently the most expensive (average of $348). 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

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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 julio 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$165Average$604FlexibilityNo cancel feeOn-time67%
DeltaCheapest$168Average$598FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$214Average$640FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$330Average$589FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$360Average$508FlexibilityNo cancel feeOn-time75%
WestJetCheapest$408Average$587FlexibilityNo cancel feeOn-time60%

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