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 $146 on American Airlines. Other airlines that offer cheap prices include Air Canada from $155 and Delta from $157 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 - Montreal Pierre Elliott Trudeau Intl, Lambert-St Louis - Toronto Pearson Intl and Lambert-St Louis - Vancouver Intl.

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

Looking at all options, your cheapest flight can be booked for $205. While the most popular route (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl) can be booked for $419 on average our data indicates $2,330 when flying from St. Louis to Canada.

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 Air Canada (78%), Jazz (78%) or United Airlines (78%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from St. Louis to Canada?

American Airlines, Air Canada and United Airlines are the most popular airlines when flying from St. Louis to Canada.

How far in advance should I book a flight from St. Louis to Canada?

To save on the cost of your flight from St. Louis to Canada, book at least 53 days before your planned departure. Booking around this time can save you about 400% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $314 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $909.

What is the cheapest month to fly from St. Louis to Canada?

Flights from St. Louis to Canada lean towards being more expensive in March. Prices are generally better when you fly from St. Louis to Canada in May, with the cheapest ticket starting at $223.

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.

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.

$326+ Flights from St. Louis to Canada

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Cheap flight deals from St. Louis to Canada

Most accurate provider	FlightHub 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$258 (Kiwi.com)
One-way from	$89 (Trip.com)
Popular in	March
Cheapest in	May
Average price	$314
Good round-trip deal	$798 or less
Good one-way deal	$241 or less

Provider with most accurate pricing for Lambert-St Louis-Toronto (YTO) flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Toronto (YTO) flights.

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From Lambert-St Louis to Canada

Search Deals

One-way flight from Lambert-St Louis to Canada

Search Deals

Highest demand for flights based on searches. 3% potential increase in price ($13 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

Price to beat on a round-trip flight from Lambert-St Louis to Canada.

Search Deals

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 April 17, 2025.

Mon 5/129:55 pmSTL - YVR

1 stop26h 30mMultiple Airlines

Wed 5/215:35 pmYVR - STL

1 stop18h 05mMultiple Airlines

Deal found 4/17

$258

Thu 6/510:10 amSTL - YYZ

1 stop9h 50mMultiple Airlines

Mon 6/94:00 pmYYZ - STL

1 stop8h 37mMultiple Airlines

Deal found 4/17

$317

Tue 5/1312:15 pmSTL - YYC

2 stops9h 04mMultiple Airlines

Tue 5/2010:05 amYYC - STL

1 stop12h 39mMultiple Airlines

Deal found 4/16

$329

Wed 9/36:00 amSTL - YYC

1 stop18h 29mAmerican Airlines

Wed 9/106:29 amYYC - STL

1 stop12h 54mAmerican Airlines

Deal found 4/17

$333

Mon 10/276:59 pmSTL - YVR

2 stops15h 24mDelta

Mon 11/37:35 pmYVR - STL

2 stops11h 09mDelta

Deal found 4/16

$347

Tue 6/171:21 pmSTL - YVR

1 stop11h 37mAmerican Airlines

Mon 6/2311:54 pmYVR - STL

1 stop18h 36mAmerican Airlines

Deal found 4/17

$350

Tue 9/231:30 pmSTL - YHZ

1 stop6h 33mAir Canada

Wed 10/151:30 pmYHZ - STL

1 stop8h 03mAir Canada

Deal found 4/17

$359

Sun 9/211:30 pmSTL - YYC

1 stop10h 36mAir Canada

Sun 9/286:00 amYYC - STL

1 stop8h 16mAir Canada

Deal found 4/16

$363

Tue 5/136:00 amSTL - YYC

1 stop7h 53mUnited Airlines

Tue 5/201:30 pmYYC - STL

1 stop6h 31mUnited Airlines

Deal found 4/16

$367

Tue 7/296:03 amSTL - YHZ

1 stop6h 17mAmerican Airlines

Thu 8/74:45 pmYHZ - STL

1 stop18h 16mAmerican Airlines

Deal found 4/17

$367

Mon 9/84:05 pmSTL - YHZ

1 stop7h 44mMultiple Airlines

Fri 9/127:15 amYHZ - STL

2 stops10h 01mMultiple Airlines

Deal found 4/16

$371

Fri 5/169:55 pmSTL - YEG

1 stop27h 42mMultiple Airlines

Fri 5/237:10 amYEG - STL

2 stops15h 42mMultiple Airlines

Deal found 4/16

$373

Best flights from St. Louis to Canada
Discover carefully curated flight deals from St. Louis to Canada that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 17, 2025.

Mon 5/129:55 pmSTL - YVR

1 stop26h 30mMultiple Airlines

Wed 5/215:35 pmYVR - STL

1 stop18h 05mMultiple Airlines

Deal found 4/17

$258

Wed 9/36:00 amSTL - YYC

1 stop18h 29mAmerican Airlines

Wed 9/106:29 amYYC - STL

1 stop12h 54mAmerican Airlines

Deal found 4/17

$333

Tue 9/231:30 pmSTL - YHZ

1 stop6h 33mAir Canada

Wed 10/151:30 pmYHZ - STL

1 stop8h 03mAir Canada

Deal found 4/17

$359

Tue 6/1711:48 amSTL - YVR

2 stops11h 14mDelta

Tue 6/247:45 pmYVR - STL

2 stops12h 48mDelta

Deal found 4/17

$363

Tue 5/136:00 amSTL - YYC

1 stop7h 53mUnited Airlines

Tue 5/201:30 pmYYC - STL

1 stop6h 31mUnited Airlines

Deal found 4/16

$367

Tue 5/610:30 amSTL - YVR

2 stops12h 05mWestJet

Tue 5/611:00 pmYVR - STL

1 stop22h 38mWestJet

Deal found 4/17

$453

Fri 9/126:30 amSTL - YVR

2 stops13h 47mAlaska Airlines

Sun 9/217:07 pmYVR - STL

2 stops17h 10mAlaska Airlines

Deal found 4/17

$509

Thu 6/510:10 amSTL - YYZ

1 stop9h 50mMultiple Airlines

Mon 6/94:00 pmYYZ - STL

1 stop8h 37mMultiple Airlines

Deal found 4/17

$317

Tue 6/171:21 pmSTL - YVR

1 stop11h 37mAmerican Airlines

Mon 6/2311:54 pmYVR - STL

1 stop18h 36mAmerican Airlines

Deal found 4/17

$350

Tue 5/1312:15 pmSTL - YYC

2 stops9h 04mMultiple Airlines

Tue 5/2010:05 amYYC - STL

1 stop12h 39mMultiple Airlines

Deal found 4/16

$329

Sun 9/211:30 pmSTL - YYC

1 stop10h 36mAir Canada

Sun 9/286:00 amYYC - STL

1 stop8h 16mAir Canada

Deal found 4/16

$363

Tue 5/69:40 amSTL - YHZ

2 stops14h 09mUnited Airlines

Fri 5/91:30 pmYHZ - STL

1 stop8h 13mUnited Airlines

Deal found 4/17

$375

Last-minute flights from St. Louis to Canada
Discover last-minute flight deals from St. Louis to Canada. Data last updated April 17, 2025 and is based on user searches.

Wed 4/236:08 amSTL - YYZ

1 stop9h 02mDelta

Wed 4/306:15 amYYZ - STL

1 stop9h 31mDelta

Deal found 4/17

$504

Wed 4/234:50 pmSTL - YYZ

2 stops27h 35mMultiple Airlines

Wed 4/307:30 amYYZ - STL

2 stops34h 45mMultiple Airlines

Deal found 4/17

$543

Wed 4/236:30 amSTL - YYZ

1 stop4h 19mAir Canada

Wed 4/307:45 pmYYZ - STL

Nonstop2h 13mAir Canada

Deal found 4/17

$545

Thu 4/245:41 pmSTL - YUL

1 stop19h 29mMultiple Airlines

Sun 4/279:15 amYUL - STL

1 stop9h 00mMultiple Airlines

Deal found 4/16

$510

Thu 4/246:30 amSTL - YUL

2 stops10h 20mUnited Airlines

Sun 4/278:30 amYUL - STL

2 stops8h 17mUnited Airlines

Deal found 4/16

$743

Fri 4/255:35 pmSTL - YYZ

2 stops15h 29mUnited Airlines

Mon 4/285:30 pmYYZ - STL

1 stop6h 45mUnited Airlines

Deal found 4/17

$655

Sun 4/279:55 pmSTL - YVR

1 stop26h 30mMultiple Airlines

Thu 5/13:55 pmYVR - STL

1 stop27h 10mMultiple Airlines

Deal found 4/17

$346

Sun 4/276:30 amSTL - YVR

1 stop8h 03mAlaska Airlines

Thu 5/16:00 pmYVR - STL

1 stop27h 59mAlaska Airlines

Deal found 4/17

$524

Sun 4/2712:51 pmSTL - YVR

1 stop24h 24mWestJet

Thu 5/16:30 pmYVR - STL

2 stops13h 06mWestJet

Deal found 4/17

$561

Sun 4/276:00 amSTL - YVR

2 stops12h 06mDelta

Thu 5/18:30 pmYVR - STL

2 stops11h 06mDelta

Deal found 4/17

$602

Sat 5/37:00 amSTL - YVR

1 stop17h 00mUnited Airlines

Mon 5/57:00 amYVR - STL

1 stop8h 07mUnited Airlines

Deal found 4/17

$409

Tue 5/65:45 pmSTL - YYZ

1 stop19h 14mMultiple Airlines

Sat 5/104:00 pmYYZ - STL

2 stops27h 41mMultiple Airlines

Deal found 4/17

$324

One-way flights from St. Louis to Canada
Search for one-way flight options from St. Louis to Canada. Find affordable one-way fares based on user searches. Data last updated April 17, 2025.

Mon 5/59:55 pmSTL - YVR

1 stop26h 30mMultiple Airlines

Deal found 4/16

$89

Fri 5/99:55 pmSTL - YYZ

2 stops24h 01mMultiple Airlines

Deal found 4/16

$123

Sat 5/317:55 pmSTL - YYC

1 stop27h 16mMultiple Airlines

Deal found 4/16

$131

Wed 7/96:00 amSTL - YYC

1 stop18h 29mAmerican Airlines

Deal found 4/17

$146

Wed 6/251:21 pmSTL - YVR

1 stop11h 37mAmerican Airlines

Deal found 4/17

$153

Sat 9/201:30 pmSTL - YYC

1 stop9h 08mAir Canada

Deal found 4/17

$155

Wed 6/256:30 amSTL - YVR

2 stops12h 22mDelta

Deal found 4/16

$157

Thu 5/1510:10 amSTL - YUL

2 stops13h 27mMultiple Airlines

Deal found 4/17

$158

Thu 6/58:10 amSTL - YYC

1 stop15h 43mUnited Airlines

Deal found 4/15

$160

Mon 5/121:30 pmSTL - YQB

1 stop5h 06mAir Canada

Deal found 4/16

$162

Sat 9/2012:10 pmSTL - YYC

2 stops12h 02mDelta

Deal found 4/16

$165

Wed 5/145:00 amSTL - YQB

1 stop7h 30mAmerican Airlines

Deal found 4/16

$175

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Canada that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Mon 5/12

9:55 pm-10:25 pm

1 stop26h 30m

Vancouver Intl

Wed 5/21

5:35 pm-1:40 pm

1 stop18h 05m

$258

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 6/5

10:10 am-9:00 pm

1 stop9h 50m

Toronto Pearson Intl

Mon 6/9

4:00 pm-11:37 pm

1 stop8h 37m

$317

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 5/13

12:15 pm-8:19 pm

2 stops9h 04m

Calgary

Tue 5/20

10:05 am-11:44 pm

1 stop12h 39m

$329

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 9/3

6:00 am-11:29 pm

1 stop18h 29m

Calgary

Wed 9/10

6:29 am-8:23 pm

1 stop12h 54m

$333

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Tue 6/17

1:21 pm-10:58 pm

1 stop11h 37m

Vancouver Intl

Mon 6/23

11:54 pm-8:30 pm

1 stop18h 36m

$350

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 9/21

1:30 pm-11:06 pm

1 stop10h 36m

Calgary

Sun 9/28

6:00 am-3:16 pm

1 stop8h 16m

$363

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Tue 6/17

11:48 am-9:02 pm

2 stops11h 14m

Vancouver Intl

Tue 6/24

7:45 pm-10:33 am

2 stops12h 48m

$363

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 5/13

6:00 am-12:53 pm

1 stop7h 53m

Calgary

Tue 5/20

1:30 pm-9:01 pm

1 stop6h 31m

$367

St. LouisEdmonton

STL - YEG

STLYEG

Lambert-St Louis

Fri 5/16

9:55 pm-12:37 am

1 stop27h 42m

Edmonton

Fri 5/23

7:10 am-11:52 pm

2 stops15h 42m

$373

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 5/10

9:40 am-7:36 pm

2 stops8h 56m

Québec City

Sun 5/18

5:20 am-12:36 pm

1 stop8h 16m

$380

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 60 results

...

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 $359). 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?

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.

Rainfall in Canada 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

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

Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines 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

9,887 reviews

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

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

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

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

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

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

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 $146 on American Airlines. Other airlines that offer cheap prices include Air Canada from $155 and Delta from $157 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 - Montreal Pierre Elliott Trudeau Intl, Lambert-St Louis - Toronto Pearson 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 Air Canada (78%), Jazz (78%) or United Airlines (78%) 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 $205. While the most popular route (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl) can be booked for $419 on average our data indicates $2,330 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 $359). 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

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from St. Louis to Canada

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$165	Average$632	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$191	Average$612	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$196	Average$604	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$237	Average$638	FlexibilityNo cancel fee	On-time69%
Alaska Airlines	Cheapest$360	Average$561	FlexibilityNo cancel fee	On-time75%
WestJet	Cheapest$405	Average$587	FlexibilityNo cancel fee	On-time60%

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$89+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Canada with Cheapflights

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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 April 17, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from St. Louis to Canada

Cheapest flights from St. Louis to CanadaExplore 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 April 17, 2025.

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 April 17, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Canada that are best for you.

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.

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?

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 April 17, 2025.

Rainfall in Canada by month

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

Temperature in Canada by month

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

Reviews of airlines servicing Canada

Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines 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.

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?

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

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

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

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

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

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

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

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

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 St. Louis to Canada

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from St. Louis to Canada

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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 April 17, 2025.