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Cheap flights from Canada to St. Louis from C$ 212

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
11 Sep — 18 Sep1
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 12 August 2026.

Thu 19/112:17 p.m. -
1 stop8h 13m
Sun 22/116:20 a.m. -
1 stop9h 02m
Deal found 8/8C$ 389
Wed 28/106:00 a.m. -
1 stop8h 43m
Fri 30/103:35 p.m. -
1 stop6h 58m
Deal found 8/8C$ 390
Wed 7/106:00 a.m. -
1 stop6h 45m
Wed 21/106:21 a.m. -
1 stop6h 29m
Deal found 12/8C$ 393
Tue 6/106:00 a.m. -
1 stop6h 45m
Wed 21/107:45 a.m. -
1 stop6h 28m
Deal found 12/8C$ 400
Wed 30/91:40 p.m. -
1 stop8h 47m
Wed 7/105:40 a.m. -
1 stop7h 13m
Deal found 10/8C$ 403
Thu 24/912:10 p.m. -
1 stop8h 20m
Sun 27/95:10 a.m. -
1 stop6h 41m
Deal found 7/8C$ 429
Wed 14/107:00 a.m. -
1 stop25h 40m
Sun 18/1010:35 a.m. -
1 stop25h 25m
Deal found 7/8C$ 437
Fri 23/1012:10 p.m. -
1 stop8h 20m
Sun 1/111:40 p.m. -
1 stop7h 24m
Deal found 10/8C$ 442
Thu 10/92:20 p.m. -
1 stop7h 11m
Mon 14/95:30 p.m. -
1 stop6h 55m
Deal found 9/8C$ 443
Fri 11/97:20 p.m. -
2 stops19h 14m
Sun 13/95:30 p.m. -
1 stop6h 55m
Deal found 8/8C$ 447
Wed 26/87:00 a.m. -
2 stops11h 46m
Tue 8/912:59 p.m. -
1 stop11h 26m
Deal found 9/8C$ 449
Fri 2/101:25 a.m. -
1 stop10h 35m
Sat 3/105:36 p.m. -
1 stop6h 50m
Deal found 10/8C$ 450

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 12 August 2026.

Round-trip from

C$ 389

One-way from

C$ 212

Popular in

March

Cheapest in

January

Average price

C$ 680

Good round-trip deal

C$ 641 or less

Good one-way deal

C$ 349 or less
Delta
  • Delta
  • 19/11-22/11
  • 2 total stops
  • 17h 15m total
  • Canada to St. Louis
Search Deals
Air Canada
  • Air Canada
  • 28/8
  • 1 total stop
  • 8h 42m total
  • Canada to St. Louis
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 227 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (C$ 72 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 12 August 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 Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Wed 30/9

1:40 p.m.-12:27 a.m.

1 stop8h 47m

Lambert-St Louis

Wed 7/10

5:40 a.m.-10:53 a.m.

1 stop7h 13m

C$ 403

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Thu 24/9

12:10 p.m.-10:30 p.m.

1 stop8h 20m

Lambert-St Louis

Sun 27/9

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

1 stop6h 41m

C$ 429

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Wed 14/10

7:00 a.m.-9:40 a.m.

1 stop25h 40m

Lambert-St Louis

Sun 18/10

10:35 a.m.-11:00 a.m.

1 stop25h 25m

C$ 437

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Fri 11/9

3:35 p.m.-11:40 p.m.

1 stop6h 05m

Lambert-St Louis

Sun 13/9

5:30 p.m.-10:25 p.m.

1 stop6h 55m

C$ 443

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Wed 23/9

1:45 p.m.-10:59 p.m.

1 stop7h 14m

Lambert-St Louis

Sun 27/9

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

1 stop6h 41m

C$ 443

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Thu 10/9

2:20 p.m.-11:31 p.m.

1 stop7h 11m

Lambert-St Louis

Mon 14/9

5:30 p.m.-10:25 p.m.

1 stop6h 55m

C$ 443

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Wed 7/10

1:45 p.m.-10:59 p.m.

1 stop7h 14m

Lambert-St Louis

Wed 21/10

9:00 a.m.-2:06 p.m.

1 stop7h 06m

C$ 457

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Wed 26/8

3:15 p.m.-12:40 p.m.

2 stops19h 25m

Lambert-St Louis

Sun 30/8

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

1 stop6h 41m

C$ 458

VancouverSt. Louis

YVR Vancouver Intl - STL Lambert-St Louis

YVRSTL

Vancouver Intl

Fri 23/10

7:20 p.m.-4:37 p.m.

2 stops19h 17m

Lambert-St Louis

Sun 1/11

8:00 a.m.-6:19 p.m.

1 stop11h 19m

C$ 460

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Thu 10/9

7:00 a.m.-11:42 p.m.

1 stop15h 42m

Lambert-St Louis

Wed 16/9

6:15 a.m.-3:15 p.m.

2 stops10h 00m

C$ 494

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

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, January is the cheapest month in which you can book a flight from Canada to St. Louis (average of C$ 586). Flying from Canada to St. Louis in April is currently the most expensive (average of C$ 776). 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 12 August 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 at noon, which can drop the price by up to 44% versus a flight in the morning.

Weekly flight availability from Canada to St. Louis

Explore weekly flight availability from Canada to St. Louis. 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 12 August 2026.

The most flights from CA0 to STL 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).

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

Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from Canada to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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 12 August 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
7.8
Good
8,504 reviews
Check prices

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Delta
7.8
Good
8,504 reviews
Delta
7.8
Good
8,504 reviews
Check prices

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
United Airlines
7.4
Good
10,112 reviews
Delta
7.8
Good
8,504 reviews
Check prices

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
WestJet
7.2
Good
3,433 reviews
Delta
7.8
Good
8,504 reviews
Check prices

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
American Airlines
7.1
Good
11,921 reviews
Delta
7.8
Good
8,504 reviews
Check prices

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,
Air Canada
7.1
Good
11,466 reviews
Delta
7.8
Good
8,504 reviews
Check prices

Entertainment

7.8

Overall

7.8

Food

7.2

Crew

8.5

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

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$ 429, American Airlines can have you in St. Louis from Canada in 8h 20m. Canada and St. Louis are separated by a distance of 2840 km. This flight may include one or multiple stops.

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

    While some choose either Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis or Vancouver 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: Jazz (77%), Air Canada (77%), United Airlines( 65%).

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

    On average you can expect to pay C$ 559 for a flight from Canada to St. Louis. The cheapest flight overall is C$ 349 while the most popular route, (Toronto Pearson Intl - Lambert-St Louis) is currently priced at C$ 529.

  • 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, January is the cheapest month in which you can book a flight from Canada to St. Louis (average of C$ 586). Flying from Canada to St. Louis in April is currently the most expensive (average of C$ 776). 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 12 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 188AverageC$ 754FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 210AverageC$ 458FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 248AverageC$ 661FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 341AverageC$ 707FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 458AverageC$ 653FlexibilityNo 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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