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Cheap flights from Canada to St. Louis from C$ 206

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 19/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
23 Apr — 30 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Canada to St. Louis

Enter your travel dates to find the best prices.

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 24 March 2026.

Tue 9/611:35 p.m.
YVR
-
STL
1 stop7h 06m
United Airlines
Wed 24/65:10 a.m.
STL
-
YVR
1 stop6h 41m
United Airlines
Deal found 24/3C$ 349
Sat 18/46:00 a.m.
YVR
-
STL
1 stop11h 30m
American Airlines
Sun 26/45:20 a.m.
STL
-
YVR
1 stop7h 28m
American Airlines
Deal found 24/3C$ 355
Mon 20/412:05 p.m.
YVR
-
STL
1 stop9h 08m
Delta
Fri 24/46:20 a.m.
STL
-
YVR
1 stop6h 30m
Delta
Deal found 24/3C$ 363
Mon 25/52:27 p.m.
YHZ
-
STL
1 stop11h 32m
American Airlines
Fri 29/56:15 a.m.
STL
-
YHZ
1 stop5h 27m
American Airlines
Deal found 20/3C$ 389
Thu 23/46:35 a.m.
YVR
-
STL
1 stop8h 51m
Delta
Tue 28/46:20 a.m.
STL
-
YVR
1 stop6h 30m
Delta
Deal found 22/3C$ 389
Thu 16/74:50 p.m.
YHZ
-
STL
1 stop6h 36m
United Airlines
Mon 20/76:00 a.m.
STL
-
YHZ
1 stop7h 58m
United Airlines
Deal found 20/3C$ 392
Thu 28/54:50 p.m.
YHZ
-
STL
1 stop9h 29m
United Airlines
Sun 31/56:00 a.m.
STL
-
YHZ
1 stop7h 58m
United Airlines
Deal found 21/3C$ 397
Mon 25/56:25 a.m.
YOW
-
STL
1 stop10h 21m
United Airlines
Fri 29/56:00 a.m.
STL
-
YOW
1 stop6h 59m
United Airlines
Deal found 21/3C$ 418
Sat 18/46:15 a.m.
YVR
-
STL
2 stops13h 16m
Delta
Sun 26/46:20 a.m.
STL
-
YVR
1 stop6h 30m
Delta
Deal found 24/3C$ 421
Tue 5/55:25 p.m.
YOW
-
STL
1 stop4h 48m
United Airlines
Wed 6/56:30 a.m.
STL
-
YOW
1 stop14h 05m
United Airlines
Deal found 19/3C$ 424
Fri 1/55:25 p.m.
YOW
-
STL
1 stop6h 25m
United Airlines
Tue 5/59:21 a.m.
STL
-
YOW
1 stop11h 14m
United Airlines
Deal found 23/3C$ 425
Mon 4/56:00 a.m.
YHZ
-
STL
1 stop8h 06m
Air Canada
Mon 11/51:05 p.m.
STL
-
YHZ
1 stop8h 51m
Air Canada
Deal found 20/3C$ 430

Find 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 24 March 2026.

Round-trip from

C$ 349

One-way from

C$ 206

Popular in

March

Cheapest in

June

Average price

C$ 1,272

Good round-trip deal

C$ 975 or less

Good one-way deal

C$ 493 or less
United Airlines
  • United Airlines
  • 9/6-24/6
  • 2 total stops
  • 13h 47m total
  • Canada to St. Louis
Search Deals
Air Canada
  • Air Canada
  • 19/6
  • 1 total stop
  • 9h 36m total
  • Canada to St. Louis
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 235 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (C$ 76 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Canada to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Canada to Lambert-St Louis.
Search Deals

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 629,999 searches. Data last updated 24 March 2026.
Use the filters below to find and compare flights from Canada to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Tue 9/6

11:35 p.m.-8:41 a.m.

1 stop7h 06m

Lambert-St Louis

Wed 24/6

5:10 a.m.-9:51 a.m.

1 stop6h 41m

C$ 349

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Thu 7/5

12:00 p.m.-11:59 p.m.

2 stops9h 59m

Lambert-St Louis

Sat 9/5

7:00 a.m.-12:11 p.m.

1 stop7h 11m

C$ 363

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Mon 20/4

12:05 p.m.-11:13 p.m.

1 stop9h 08m

Lambert-St Louis

Fri 24/4

6:20 a.m.-10:50 a.m.

1 stop6h 30m

C$ 363

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Mon 20/4

1:59 p.m.-8:25 a.m.

1 stop16h 26m

Lambert-St Louis

Mon 27/4

8:15 p.m.-11:33 a.m.

1 stop17h 18m

C$ 363

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Sun 26/4

11:18 a.m.-12:25 a.m.

2 stops11h 07m

Lambert-St Louis

Wed 29/4

7:00 a.m.-6:40 p.m.

2 stops13h 40m

C$ 363

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Thu 16/7

4:50 p.m.-9:26 p.m.

1 stop6h 36m

Lambert-St Louis

Mon 20/7

6:00 a.m.-3:58 p.m.

1 stop7h 58m

C$ 392

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Thu 28/5

4:50 p.m.-10:44 p.m.

1 stop7h 54m

Lambert-St Louis

Sun 31/5

6:00 a.m.-3:58 p.m.

1 stop7h 58m

C$ 397

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Mon 25/5

7:00 a.m.-3:46 p.m.

2 stops10h 46m

Lambert-St Louis

Fri 29/5

6:00 a.m.-3:58 p.m.

1 stop7h 58m

C$ 397

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 26/5

6:05 a.m.-3:46 p.m.

2 stops10h 41m

Lambert-St Louis

Thu 28/5

6:00 a.m.-5:07 p.m.

1 stop10h 07m

C$ 425

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 1/5

5:25 p.m.-10:50 p.m.

1 stop6h 25m

Lambert-St Louis

Tue 5/5

9:21 a.m.-9:35 p.m.

1 stop11h 14m

C$ 425

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/3

Showing 1-10 of 60 resultsSorted by cheapest first
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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 C$ 267). Flying from Canada to St. Louis in April is currently the most expensive (average of C$ 492). 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 24 March 2026.

When flying from Canada to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 43% versus a flight in the evening.

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 24 March 2026.
Read through reviews of airlines operating flights from Canada to St. Louis, such as Delta,United Airlines, andWestJet. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,321 reviews
Check prices

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,321 reviews
Delta
7.9
Good
8,321 reviews
Check prices

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,469 reviews
Delta
7.9
Good
8,321 reviews
Check prices

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
WestJet
7.2
Good
3,300 reviews
Delta
7.9
Good
8,321 reviews
Check prices

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,491 reviews
Delta
7.9
Good
8,321 reviews
Check prices

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,836 reviews
Delta
7.9
Good
8,321 reviews
Check prices

Food

7.2

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.8

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Canada to St. Louis. It is only a 20.4 km journey from Lambert-St Louis (STL) to St. Louis’s city centre.

  • How long is the flight from Canada to St. Louis?

    For as low as C$ 349, United Airlines can have you in St. Louis from Canada in 7h 06m. Canada and St. Louis are separated by a distance of 2840 km. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at C$ 241. Air Canada flights start at C$ 263 while deals on WestJet start at C$ 372 one-way.

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

    While some choose either Vancouver Intl - Lambert-St Louis or Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis, Toronto Pearson Intl - Lambert-St Louis is the most popular route from Canada to St. Louis.

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

    Before booking your flight to St. Louis from Canada, check out the most reliable airlines to get you to your destination on time: United Airlines (72%), Air Canada (71%), Jazz( 71%).

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

    On average you can expect to pay C$ 1,272 for a flight from Canada to St. Louis. The cheapest flight overall is C$ 697 while the most popular route, (Toronto Pearson Intl - Lambert-St Louis) is currently priced at C$ 598.

  • 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 C$ 267). Flying from Canada to St. Louis in April is currently the most expensive (average of C$ 492). 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

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
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Top 5 airlines flying from Canada to St. Louis

Discover the top 5 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 629,999 searches. Data last updated 24 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 212AverageC$ 700FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 273AverageC$ 733FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 331AverageC$ 673FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 472AverageC$ 643FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 555AverageC$ 864FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Canada to St. Louis?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Canada to St. Louis. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Canada to St. Louis?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Canada to St. Louis for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Canada to St. Louis with no change fees?

Yes! Cheapflights helps users easily find flights from Canada to St. Louis with no change fees.

Can Cheapflights notify me if prices for flights from Canada to St. Louis become cheaper?

Of course! You can now track prices for flights from Canada to St. Louis and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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