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Cheap flights from Canada to St. Louis from C$ 217

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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
7 Apr — 14 Apr1
1 adult

Cheap 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 2 April 2025.

Round-trip from

C$ 449

One-way from

C$ 217

Popular in

January

Cheapest in

May

Average price

C$ 705

Good round-trip deal

C$ 545 or less

Good one-way deal

C$ 645 or less
Air Canada
  • Air Canada
  • 2/5-8/5
  • 2 total stops
  • 16h 07m total
  • Canada to St. Louis
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8/5
  • 8/5
  • 1 total stop
  • 9h 06m total
  • Canada to St. Louis
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Highest demand for flights based on searches. 4% potential increase in price (C$ 47 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 10 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Canada to Lambert-St Louis.
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Price to beat on a one-way flight from Canada to Lambert-St Louis.
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Find flight deals from Canada to St. Louis

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 2 April 2025.

Fri 2/51:30 p.m.YHZ - STL
1 stop8h 13mAir Canada
Thu 8/57:30 a.m.STL - YHZ
1 stop7h 54mAir Canada
Deal found 1/4C$ 449
Wed 30/45:30 p.m.YEG - STL
1 stop26h 35mMultiple Airlines
Wed 7/58:15 p.m.STL - YEG
2 stops21h 42mMultiple Airlines
Deal found 2/4C$ 451
Fri 6/66:45 a.m.YYC - STL
1 stop15h 34mAmerican Airlines
Mon 9/67:20 a.m.STL - YYC
1 stop17h 09mAmerican Airlines
Deal found 31/3C$ 478
Fri 2/55:20 a.m.YHZ - STL
2 stops9h 00mUnited Airlines
Thu 8/56:30 a.m.STL - YHZ
2 stops8h 54mUnited Airlines
Deal found 1/4C$ 487
Tue 29/47:20 p.m.YVR - STL
2 stops15h 27mUnited Airlines
Tue 6/55:20 a.m.STL - YVR
1 stop10h 16mUnited Airlines
Deal found 31/3C$ 487
Wed 18/610:30 a.m.YVR - STL
2 stops10h 50mWestJet
Thu 3/710:44 a.m.STL - YVR
2 stops13h 06mWestJet
Deal found 1/4C$ 530
Fri 6/66:30 a.m.YYC - STL
1 stop9h 39mDelta
Mon 9/69:09 a.m.STL - YYC
2 stops10h 31mDelta
Deal found 31/3C$ 531
Fri 11/48:00 p.m.YYZ - STL
1 stop22h 43mMultiple Airlines
Mon 5/59:55 p.m.STL - YYZ
1 stop18h 25mMultiple Airlines
Deal found 1/4C$ 536
Wed 14/56:00 a.m.YVR - STL
1 stop14h 45mAmerican Airlines
Tue 20/56:52 a.m.STL - YVR
1 stop7h 53mAmerican Airlines
Deal found 31/3C$ 537
Thu 1/56:30 p.m.YYZ - STL
Nonstop2h 13mAir Canada
Sun 4/51:30 p.m.STL - YYZ
1 stop7h 09mAir Canada
Deal found 1/4C$ 543
Thu 5/612:30 a.m.YYC - STL
1 stop22h 08mWestJet
Mon 9/65:27 p.m.STL - YYC
1 stop18h 52mWestJet
Deal found 31/3C$ 557
Wed 21/510:20 a.m.YYZ - STL
1 stop5h 48mWestJet
Tue 27/56:00 a.m.STL - YYZ
1 stop6h 40mWestJet
Deal found 1/4C$ 559

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 2 April 2025.
Use the filters below to find and compare flights from Canada to St. Louis that are best for you.

Fly from

Canada

Fly to

St. Louis

Route

Depart

Return

Price

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Fri 2/5

1:30 p.m.-7:43 p.m.

1 stop8h 13m

Lambert-St Louis

Thu 8/5

7:30 a.m.-5:24 p.m.

1 stop7h 54m

C$ 449

EdmontonSt. Louis

YEG - STL

YEGSTL

Edmonton

Wed 30/4

5:30 p.m.-9:05 p.m.

1 stop26h 35m

Lambert-St Louis

Wed 7/5

8:15 p.m.-4:57 p.m.

2 stops21h 42m

C$ 451

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/6

6:45 a.m.-11:19 p.m.

1 stop15h 34m

Lambert-St Louis

Mon 9/6

7:20 a.m.-11:29 p.m.

1 stop17h 09m

C$ 478

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Fri 2/5

5:20 a.m.-12:20 p.m.

2 stops9h 00m

Lambert-St Louis

Thu 8/5

6:30 a.m.-5:24 p.m.

2 stops8h 54m

C$ 487

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Tue 29/4

7:20 p.m.-12:47 p.m.

2 stops15h 27m

Lambert-St Louis

Tue 6/5

5:20 a.m.-1:36 p.m.

1 stop10h 16m

C$ 487

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Wed 18/6

10:30 a.m.-11:20 p.m.

2 stops10h 50m

Lambert-St Louis

Thu 3/7

10:44 a.m.-9:50 p.m.

2 stops13h 06m

C$ 530

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/6

12:05 p.m.-12:59 a.m.

2 stops11h 54m

Lambert-St Louis

Mon 9/6

9:09 a.m.-6:40 p.m.

2 stops10h 31m

C$ 531

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Wed 14/5

6:00 a.m.-10:45 p.m.

1 stop14h 45m

Lambert-St Louis

Tue 20/5

6:52 a.m.-12:45 p.m.

1 stop7h 53m

C$ 537

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 1/5

6:30 p.m.-7:43 p.m.

Nonstop2h 13m

Lambert-St Louis

Sun 4/5

1:30 p.m.-9:39 p.m.

1 stop7h 09m

C$ 543

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 5/6

12:30 a.m.-11:38 p.m.

1 stop22h 08m

Lambert-St Louis

Mon 9/6

5:27 p.m.-11:19 a.m.

1 stop18h 52m

C$ 557

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/4

Showing 1-10 of 55 results
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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$ 365). Flying from Canada to St. Louis in September is currently the most expensive (average of C$ 491). 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 2 April 2025.

When flying from Canada to St. Louis, 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 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 2 April 2025.

The most flights from CA0 to STL are scheduled on a Tuesday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in St. Louis by month

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

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

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

If weather is an important factor for your trip to St. Louis, 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 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

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 2 April 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines from Canada to St. Louis 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
9,820 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,820 reviews
Alaska Airlines
8.0
Very good
9,820 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,898 reviews
Alaska Airlines
8.0
Very good
9,820 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,616 reviews
Alaska Airlines
8.0
Very good
9,820 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,820 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
WestJet
7.2
Good
2,789 reviews
Alaska Airlines
8.0
Very good
9,820 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

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

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at C$ 258. United Airlines flights start at C$ 286 while deals on WestJet start at C$ 304 one-way.

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

    While some choose either Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis or Calgary - 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: Air Canada (79%), Jazz (79%), United Airlines( 79%).

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

    On average you can expect to pay C$ 633 for a flight from Canada to St. Louis. The cheapest flight overall is C$ 503 while the most popular route, (Toronto Pearson Intl - Lambert-St Louis) is currently priced at C$ 426.

  • 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$ 365). Flying from Canada to St. Louis in September is currently the most expensive (average of C$ 491). 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 Canada?

Book flights to Canada if you plan to visit one of these locations
St. Peters
Chesterfield

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Alternative routes for Canada to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to St. Louis flights
Pearson Intl to Kansas City flights
Pierre Elliott Trudeau Intl to St. Louis flights
Calgary to St. Louis flights
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Calgary to Kansas City flights
Pierre Elliott Trudeau Intl to Kansas City flights
Halifax to Kansas City flights
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Vancouver Intl to St. Louis flights
Vancouver Intl to Springfield flights
Ottawa to Kansas City flights
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Saskatoon to St. Louis flights
Pierre Elliott Trudeau Intl to Cape Girardeau flights
Edmonton to Columbia flights
Calgary to Columbia flights
Pearson Intl to Columbia flights
Charlottetown to St. Louis flights
Victoria to Kansas City flights
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Regina to Branson flights

Top 4 airlines flying from Canada to St. Louis

Discover the top 4 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 2 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 259AverageC$ 747FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 266AverageC$ 767FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 380AverageC$ 773FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 380AverageC$ 453FlexibilityNo cancel feeOn-timeN/A
Search Delta flights

Fly with Cheapflights

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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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