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Cheap flights from Canada to St. Louis from C$ 194

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Canada to St. Louis departing on 4/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Canada to St. Louis

Recent round-trip flight deals from Canada to St. Louis

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:10 a.m. - 10:27 p.m.
YYZ
-
STL
16h 17m
1 stop
Multiple Airlines Logo
4:51 p.m. - 2:20 p.m.
STL
-
YYZ
20h 29m
1 stop
C$ 322Multiple Airlines
Wed, 4 Mar - Mon, 9 Mar
Multiple Airlines Logo
7:10 a.m. - 10:27 p.m.
YYZ
-
STL
16h 17m
1 stop
Multiple Airlines Logo
11:32 a.m. - 11:20 p.m.
STL
-
YYZ
34h 48m
2 stops
C$ 351Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Air Canada Logo
9:00 a.m. - 3:29 p.m.
YHZ
-
STL
8h 29m
1 stop
Air Canada Logo
4:05 p.m. - 12:51 a.m.
STL
-
YHZ
6h 46m
1 stop
C$ 410Air Canada
Thu, 5 Mar - Wed, 11 Mar
Air Canada Logo
9:00 a.m. - 3:29 p.m.
YHZ
-
STL
8h 29m
1 stop
Air Canada Logo
4:05 p.m. - 12:51 a.m.
STL
-
YHZ
6h 46m
1 stop
C$ 423Air Canada
Fri, 6 Mar - Tue, 10 Mar
United Airlines Logo
5:20 p.m. - 9:08 p.m.
YOW
-
STL
4h 48m
1 stop
United Airlines Logo
7:45 a.m. - 1:59 p.m.
STL
-
YOW
5h 14m
1 stop
C$ 434United Airlines
Thu, 9 Apr - Sat, 11 Apr
United Airlines Logo
6:00 a.m. - 9:08 p.m.
YOW
-
STL
16h 08m
3 stops
United Airlines Logo
7:45 a.m. - 1:59 p.m.
STL
-
YOW
5h 14m
1 stop
C$ 448United Airlines
Thu, 9 Apr - Sat, 11 Apr
American Airlines Logo
12:30 p.m. - 11:46 p.m.
YUL
-
STL
12h 16m
1 stop
American Airlines Logo
8:03 p.m. - 11:44 a.m.
STL
-
YUL
14h 41m
1 stop
C$ 478American Airlines
Mon, 20 Apr - Sat, 25 Apr
American Airlines Logo
12:30 p.m. - 11:46 p.m.
YUL
-
STL
12h 16m
1 stop
American Airlines Logo
8:03 p.m. - 11:44 a.m.
STL
-
YUL
14h 41m
1 stop
C$ 481American Airlines
Mon, 20 Apr - Sat, 25 Apr
WestJet Logo
6:00 a.m. - 8:42 p.m.
YHZ
-
STL
16h 42m
2 stops
WestJet Logo
6:19 a.m. - 7:28 a.m.
STL
-
YHZ
23h 09m
2 stops
C$ 493WestJet
Sun, 12 Apr - Wed, 15 Apr
WestJet Logo
6:25 p.m. - 9:36 a.m.
YEG
-
STL
14h 11m
2 stops
WestJet Logo
6:20 a.m. - 3:50 p.m.
STL
-
YEG
10h 30m
2 stops
C$ 605WestJet
Wed, 6 May - Wed, 13 May

American Airlines flights from Canada to St. Louis

Our best American Airlines deals on Canada to St. Louis flight tickets
American Airlines
20 Apr
YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl
12h 16m
1 stop
STL11:46 p.m.Lambert-St Louis
25 Apr
STL8:03 p.m.Lambert-St Louis
14h 41m
1 stop
YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 478
American Airlines
20 Apr
YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl
12h 16m
1 stop
STL11:46 p.m.Lambert-St Louis
25 Apr
STL8:03 p.m.Lambert-St Louis
14h 41m
1 stop
YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 481
American Airlines
24 Feb
YYZ4:08 p.m.Toronto Pearson Intl
7h 56m
1 stop
STL11:04 p.m.Lambert-St Louis
28 Feb
STL8:00 a.m.Lambert-St Louis
12h 29m
1 stop
YYZ9:29 p.m.Toronto Pearson Intl
C$ 515

Air Canada flights from Canada to St. Louis

Our best Air Canada deals on Canada to St. Louis flight tickets
Air Canada
5 Mar
YHZ9:00 a.m.Halifax Intl
8h 29m
1 stop
STL3:29 p.m.Lambert-St Louis
11 Mar
STL4:05 p.m.Lambert-St Louis
6h 46m
1 stop
YHZ12:51 a.m.Halifax Intl
C$ 410
Air Canada
6 Mar
YHZ9:00 a.m.Halifax Intl
8h 29m
1 stop
STL3:29 p.m.Lambert-St Louis
10 Mar
STL4:05 p.m.Lambert-St Louis
6h 46m
1 stop
YHZ12:51 a.m.Halifax Intl
C$ 423
Air Canada
6 Mar
YHZ6:55 a.m.Halifax Intl
10h 34m
2 stops
STL3:29 p.m.Lambert-St Louis
10 Mar
STL4:05 p.m.Lambert-St Louis
6h 46m
1 stop
YHZ12:51 a.m.Halifax Intl
C$ 428

momondo 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, momondo users made 96,600 searches. Data last updated 4 February 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

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 4/3

7:10 a.m.-10:27 p.m.

1 stop16h 17m

Lambert-St Louis

Mon 9/3

4:51 p.m.-2:20 p.m.

1 stop20h 29m

C$ 322

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 4/3

7:10 a.m.-10:27 p.m.

1 stop16h 17m

Lambert-St Louis

Wed 11/3

11:32 a.m.-11:20 p.m.

2 stops34h 48m

C$ 351

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Thu 5/3

9:00 a.m.-3:29 p.m.

1 stop8h 29m

Lambert-St Louis

Wed 11/3

4:05 p.m.-12:51 a.m.

1 stop6h 46m

C$ 410

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Fri 6/3

9:00 a.m.-3:29 p.m.

1 stop8h 29m

Lambert-St Louis

Tue 10/3

4:05 p.m.-12:51 a.m.

1 stop6h 46m

C$ 423

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 9/4

5:20 p.m.-9:08 p.m.

1 stop4h 48m

Lambert-St Louis

Sat 11/4

7:45 a.m.-1:59 p.m.

1 stop5h 14m

C$ 434

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 9/4

6:00 a.m.-9:08 p.m.

3 stops16h 08m

Lambert-St Louis

Sat 11/4

7:45 a.m.-1:59 p.m.

1 stop5h 14m

C$ 448

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

12:30 p.m.-11:46 p.m.

1 stop12h 16m

Lambert-St Louis

Sat 25/4

8:03 p.m.-11:44 a.m.

1 stop14h 41m

C$ 478

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

12:30 p.m.-11:46 p.m.

1 stop12h 16m

Lambert-St Louis

Sat 25/4

8:03 p.m.-11:44 a.m.

1 stop14h 41m

C$ 481

HalifaxSt. Louis

YHZ - STL

YHZSTL

Halifax Intl

Sun 12/4

6:00 a.m.-8:42 p.m.

2 stops16h 42m

Lambert-St Louis

Wed 15/4

6:19 a.m.-7:28 a.m.

2 stops23h 09m

C$ 493

EdmontonSt. Louis

YEG - STL

YEGSTL

Edmonton

Wed 6/5

6:25 p.m.-9:36 a.m.

2 stops14h 11m

Lambert-St Louis

Wed 13/5

6:20 a.m.-3:50 p.m.

2 stops10h 30m

C$ 605

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Canada to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

The month of June is, on average, the cheapest month to fly to St. Louis from Canada, with most prices found around C$ 508. If you don’t want to visit St. Louis in June, then you should wait until January to fly from Canada, when ticket prices are also cheap, with an average price of C$ 540.

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Thursday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 552. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 804.

What is the cheapest time of day to depart on your flight to St. Louis?

The cheapest time of day to fly to St. Louis is in the morning when flights can be purchased for as low as C$ 536. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 614 on average. Flights to St. Louis from Canada at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Canada to Lambert-St Louis flight route?

Fly from Toronto Pearson Intl to Lambert-St Louis for the best Canada - Lambert-St Louis flight prices

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

You are more likely to see cheaper flights to St. Louis from Canada when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around C$ 644 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Canada for as low as C$ 492 on momondo.

What cabin class options are available on Canada to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on Canada to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Canada to St. Louis flights?

No. A direct flight is the cheapest option for a flight between Canada to St. Louis.

Cheap Canada to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Canada to St. Louis

Best price found

C$ 490

Fastest flight time

2h 06m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Canada in the past 72 hours is C$ 490. The best round-trip flight deal from Canada to St. Louis found on momondo in the last 72 hours is C$ 577.
The fastest flight from Canada to St. Louis takes 2h 06m
Direct flights go from Canada to St. Louis every day.
There is 1 airport in St. Louis. From Canada there are direct flights to Lambert-St Louis (STL).
Search flight deals

  • When did momondo last update prices for flights from Canada to Lambert-St Louis Airport?

    Prices for flights from Canada to Lambert-St Louis Airport are updated daily.

  • How many operators does momondo search for flights from Canada to Lambert-St Louis Airport?

  • How old do you have to be to fly from Canada to Lambert-St Louis Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Canada to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Canada to St. Louis?

Best airlines flying from Canada to St. Louis

Compare and see reviews for airlines that fly from Canada to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom C$ 329Free CancellationRating
7.4
9,236 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 357Free CancellationRating
7.1
10,688 reviews
Search Air Canada flights
American AirlinesPriceFrom C$ 368Free CancellationRating
7.2
11,222 reviews
Search American Airlines flights
DeltaPriceFrom C$ 469Free CancellationRating
7.9
8,146 reviews
Search Delta flights
WestJetPriceFrom C$ 551Free CancellationRating
7.2
3,255 reviews
Search WestJet flights

Travelling to a place near St. Louis?

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

Why use momondo?

Why should I use momondo to find a flight deal from Canada to St. Louis?

Finding the right flight to St. Louis from Canada is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

Can I find flights from Canada to St. Louis with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Canada to St. Louis flights to just show those with flexible booking policies.

How can momondo help me find flights from Canada to St. Louis?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Canada to St. Louis.

I’m not ready to book a flight from Canada to St. Louis right now. Can momondo alert me if prices change?

Price alerts on flights to St. Louis from Canada are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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