Find flights
Deals
When to book
Airlines
FAQs

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
30 Apr — 7 May1
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 25 April 2025.

Round-trip from

C$ 374

One-way from

C$ 212

Popular in

January

Cheapest in

November

Average price

C$ 716

Good round-trip deal

C$ 542 or less

Good one-way deal

C$ 420 or less
American Airlines
  • American Airlines
  • 9/6-16/6
  • 2 total stops
  • 33h 45m total
  • Canada to St. Louis
Search Deals
20/5
  • 20/5
  • 1 total stop
  • 8h 44m total
  • Canada to St. Louis
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (C$ 36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 10 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 Canada to Lambert-St Louis.
Search Deals
Price to beat on a one-way flight from Canada to Lambert-St Louis.
Search Deals

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 25 April 2025.

Mon 9/66:29 a.m.YYC - STL
1 stop16h 25mAmerican Airlines
Mon 16/65:37 a.m.STL - YYC
1 stop17h 20mAmerican Airlines
Deal found 24/4C$ 374
Fri 6/67:40 a.m.YYC - STL
2 stops8h 29mDelta
Sun 15/62:23 p.m.STL - YYC
1 stop9h 37mDelta
Deal found 24/4C$ 415
Thu 5/612:55 a.m.YYC - STL
1 stop18h 03mAir Canada
Sun 15/67:30 a.m.STL - YYC
1 stop8h 48mAir Canada
Deal found 24/4C$ 446
Sat 24/56:15 a.m.YYC - STL
1 stop13h 33mMultiple Airlines
Sat 31/52:30 p.m.STL - YYC
1 stop11h 33mMultiple Airlines
Deal found 24/4C$ 449
Tue 10/66:40 a.m.YHZ - STL
2 stops11h 38mDelta
Tue 17/610:30 a.m.STL - YHZ
2 stops10h 57mDelta
Deal found 25/4C$ 451
Fri 15/87:20 p.m.YVR - STL
2 stops19h 11mUnited Airlines
Sun 24/85:15 a.m.STL - YVR
2 stops10h 39mUnited Airlines
Deal found 25/4C$ 469
Fri 6/66:20 a.m.YVR - STL
2 stops12h 29mDelta
Tue 10/67:15 a.m.STL - YVR
2 stops11h 37mDelta
Deal found 24/4C$ 473
Mon 12/57:00 a.m.YXE - STL
2 stops13h 05mMultiple Airlines
Fri 23/53:30 p.m.STL - YXE
1 stop6h 55mMultiple Airlines
Deal found 25/4C$ 495
Fri 19/912:45 a.m.YVR - STL
1 stop12h 33mAir Canada
Sat 20/95:30 p.m.STL - YVR
1 stop6h 48mAir Canada
Deal found 25/4C$ 496
Fri 6/66:15 a.m.YYZ - STL
1 stop6h 49mDelta
Tue 10/612:15 p.m.STL - YYZ
1 stop7h 29mDelta
Deal found 24/4C$ 501
Fri 13/611:54 p.m.YVR - STL
1 stop6h 14mAmerican Airlines
Mon 23/64:23 p.m.STL - YVR
1 stop8h 35mAmerican Airlines
Deal found 25/4C$ 501
Fri 13/67:00 a.m.YYC - STL
2 stops26h 32mWestJet
Mon 23/66:04 p.m.STL - YYC
1 stop25h 24mWestJet
Deal found 24/4C$ 506

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 25 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

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Mon 9/6

6:29 a.m.-11:54 p.m.

1 stop16h 25m

Lambert-St Louis

Mon 16/6

5:37 a.m.-9:57 p.m.

1 stop17h 20m

C$ 374

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/6

6:30 a.m.-5:09 p.m.

1 stop9h 39m

Lambert-St Louis

Sun 15/6

2:23 p.m.-11:00 p.m.

1 stop9h 37m

C$ 415

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 5/6

12:55 a.m.-7:58 p.m.

1 stop18h 03m

Lambert-St Louis

Sun 15/6

7:30 a.m.-3:18 p.m.

1 stop8h 48m

C$ 446

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 24/5

6:15 a.m.-8:48 p.m.

1 stop13h 33m

Lambert-St Louis

Sat 31/5

2:30 p.m.-1:03 a.m.

1 stop11h 33m

C$ 449

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Tue 10/6

6:40 a.m.-4:18 p.m.

2 stops11h 38m

Lambert-St Louis

Tue 17/6

10:30 a.m.-11:27 p.m.

2 stops10h 57m

C$ 451

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Fri 15/8

7:00 a.m.-6:03 p.m.

1 stop9h 03m

Lambert-St Louis

Sun 24/8

7:30 a.m.-6:48 p.m.

2 stops13h 18m

C$ 469

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Fri 6/6

5:15 p.m.-5:03 a.m.

1 stop9h 48m

Lambert-St Louis

Tue 10/6

4:32 p.m.-9:49 p.m.

1 stop7h 17m

C$ 488

SaskatoonSt. Louis

YXE - STL

YXESTL

Saskatoon

Mon 12/5

7:00 a.m.-9:05 p.m.

2 stops13h 05m

Lambert-St Louis

Fri 23/5

3:30 p.m.-9:25 p.m.

1 stop6h 55m

C$ 495

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Fri 19/9

12:45 a.m.-3:18 p.m.

1 stop12h 33m

Lambert-St Louis

Sat 20/9

5:30 p.m.-10:18 p.m.

1 stop6h 48m

C$ 496

VancouverSt. Louis

YVR - STL

YVRSTL

Vancouver Intl

Fri 13/6

11:54 p.m.-8:08 a.m.

1 stop6h 14m

Lambert-St Louis

Mon 23/6

4:23 p.m.-10:58 p.m.

1 stop8h 35m

C$ 501

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/4

Showing 1-10 of 60 results
1
2
3
...
6

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 25 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 25 April 2025.

The most flights from CA0 to STL are scheduled on a Wednesday (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 25 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
9,927 reviews
Check prices

Food

7.1

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

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
9,927 reviews
Alaska Airlines
8.0
Very good
9,927 reviews
Check prices

Food

7.1

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

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
7,920 reviews
Alaska Airlines
8.0
Very good
9,927 reviews
Check prices

Food

7.1

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

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
8,685 reviews
Alaska Airlines
8.0
Very good
9,927 reviews
Check prices

Food

7.1

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

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
9,927 reviews
Check prices

Food

7.1

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

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
2,818 reviews
Alaska Airlines
8.0
Very good
9,927 reviews
Check prices

Food

7.1

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

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

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 American Airlines, which is currently one of the cheapest options available, starting at C$ 233. Delta flights start at C$ 234 while deals on Air Canada start at C$ 258 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 Edmonton - 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$ 586 for a flight from Canada to St. Louis. The cheapest flight overall is C$ 332 while the most popular route, (Toronto Pearson Intl - Lambert-St Louis) is currently priced at C$ 456.

  • 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
Chesterfield
St. Peters

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 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
Pierre Elliott Trudeau Intl to Kansas City flights
Winnipeg to Kansas City flights
Edmonton to St. Louis flights
Vancouver Intl to Kansas City flights
Pearson Intl to Springfield flights
Vancouver Intl to St. Louis flights
Calgary to St. Louis flights
Calgary to Kansas City flights
Halifax to Kansas City flights
Buffalo to St. Louis flights
Edmonton to Kansas City flights
Ottawa to Kansas City flights
Pearson Intl to Quincy flights
Buffalo to Kansas City flights
Ottawa to St. Louis flights
Comox to Kansas City flights
Saskatoon to St. Louis flights
Halifax to St. Louis flights
Abbotsford to Kansas City flights
Charlottetown to St. Louis flights
Victoria to St. Louis flights
Québec City to St. Louis flights
Vancouver Intl to Springfield flights
Regina to Branson flights
Victoria to Kansas City flights
Saskatoon to Kansas City flights
Pearson Intl to Columbia flights
Calgary to Columbia flights
Edmonton to Columbia 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 25 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 250AverageC$ 719FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 256AverageC$ 734FlexibilityNo cancel feeOn-time60%
Search WestJet flights
United AirlinesCheapestC$ 367AverageC$ 746FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 367AverageC$ 437FlexibilityNo cancel feeOn-timeN/A
Search Delta 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.