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Cheap flights from St. Louis to Canada from $109

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Canada departing on 1/23. 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
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:42 pm - 8:11 pm
STL
-
YYZ
25h 29m2 stops
Multiple Airlines Logo
7:15 am - 10:27 pm
YYZ
-
STL
16h 12m1 stop
$243Multiple Airlines
Mon, Feb 9 - Wed, Feb 25
Multiple Airlines Logo
9:45 pm - 7:36 pm
STL
-
YYZ
20h 51m2 stops
Multiple Airlines Logo
7:15 am - 10:27 pm
YYZ
-
STL
16h 12m1 stop
$263Multiple Airlines
Mon, Feb 9 - Wed, Feb 25
Air Canada Logo
2:20 pm - 12:24 am
STL
-
YHZ
8h 04m1 stop
Air Canada Logo
6:00 am - 12:06 pm
YHZ
-
STL
8h 06m1 stop
$319Air Canada
Wed, May 13 - Sat, May 16
Air Canada Logo
7:30 am - 8:30 pm
STL
-
YHZ
11h 00m2 stops
Air Canada Logo
6:00 am - 12:06 pm
YHZ
-
STL
8h 06m1 stop
$325Air Canada
Wed, May 13 - Sat, May 16
American Airlines Logo
6:44 pm - 12:48 pm
STL
-
YYC
19h 04m1 stop
American Airlines Logo
1:40 pm - 10:20 am
YYC
-
STL
19h 40m1 stop
$338American Airlines
Wed, Jan 28 - Wed, Feb 4
American Airlines Logo
3:20 pm - 12:48 pm
STL
-
YYC
22h 28m1 stop
American Airlines Logo
6:30 am - 9:15 pm
YYC
-
STL
13h 45m2 stops
$339American Airlines
Wed, Jan 28 - Wed, Feb 4
WestJet Logo
8:50 am - 9:25 pm
STL
-
YWG
12h 35m2 stops
WestJet Logo
8:50 am - 11:01 pm
YWG
-
STL
14h 11m1 stop
$458WestJet
Thu, May 14 - Wed, May 20
WestJet Logo
8:50 am - 9:25 pm
STL
-
YWG
12h 35m2 stops
WestJet Logo
10:45 am - 8:31 pm
YWG
-
STL
9h 46m2 stops
$471WestJet
Thu, May 14 - Wed, May 20
United Airlines Logo
8:45 am - 2:14 pm
STL
-
YEG
6h 29m1 stop
United Airlines Logo
6:00 am - 4:55 pm
YEG
-
STL
9h 55m1 stop
$595United Airlines
Sun, Jan 18 - Wed, Jan 21
United Airlines Logo
7:45 am - 2:18 pm
STL
-
YQB
5h 33m1 stop
United Airlines Logo
6:00 am - 3:21 pm
YQB
-
STL
10h 21m2 stops
$606United Airlines
Thu, May 14 - Sat, May 30

Air Canada flights from St. Louis to Canada

Our best Air Canada deals on St. Louis to Canada flight tickets
Air Canada
May 13
STL2:20 pmLambert-St Louis
8h 04m
1 stop
YHZ12:24 amHalifax Intl
May 16
YHZ6:00 amHalifax Intl
8h 06m
1 stop
STL12:06 pmLambert-St Louis
$319
Find similar
Air Canada
May 13
STL7:30 amLambert-St Louis
11h 00m
2 stops
YHZ8:30 pmHalifax Intl
May 16
YHZ6:00 amHalifax Intl
8h 06m
1 stop
STL12:06 pmLambert-St Louis
$325
Find similar
Air Canada
Feb 14
STL4:05 pmLambert-St Louis
6h 01m
1 stop
YHZ12:06 amHalifax Intl
Feb 21
YHZ6:55 amHalifax Intl
10h 34m
2 stops
STL3:29 pmLambert-St Louis
$328
Find similar

American Airlines flights from St. Louis to Canada

Our best American Airlines deals on St. Louis to Canada flight tickets
American Airlines
Jan 28
STL6:44 pmLambert-St Louis
19h 04m
1 stop
YYC12:48 pmCalgary
Feb 4
YYC1:40 pmCalgary
19h 40m
1 stop
STL10:20 amLambert-St Louis
$338
Find similar
American Airlines
Jan 28
STL3:20 pmLambert-St Louis
22h 28m
1 stop
YYC12:48 pmCalgary
Feb 4
YYC6:30 amCalgary
13h 45m
2 stops
STL9:15 pmLambert-St Louis
$339
Find similar
American Airlines
Feb 14
STL6:36 pmLambert-St Louis
19h 24m
1 stop
YYC1:00 pmCalgary
Feb 21
YYC6:30 amCalgary
13h 42m
2 stops
STL9:12 pmLambert-St Louis
$357
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Canada 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 832,500 searches. Data last updated January 2, 2026.
Use the filters below to find and compare flights from St. Louis to Canada that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 2/9

5:42 pm-8:11 pm

2 stops25h 29m

Toronto Pearson Intl

Wed 2/25

7:15 am-10:27 pm

1 stop16h 12m

$243

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 2/9

9:45 pm-7:36 pm

2 stops20h 51m

Toronto Pearson Intl

Wed 2/25

7:15 am-10:27 pm

1 stop16h 12m

$263

St. LouisHalifax

STL - YHZ

STLYHZ

Lambert-St Louis

Wed 5/13

2:20 pm-12:24 am

1 stop8h 04m

Halifax Intl

Sat 5/16

6:00 am-12:06 pm

1 stop8h 06m

$319

St. LouisHalifax

STL - YHZ

STLYHZ

Lambert-St Louis

Wed 5/13

7:30 am-8:30 pm

2 stops11h 00m

Halifax Intl

Sat 5/16

6:00 am-12:06 pm

1 stop8h 06m

$325

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/28

6:44 pm-12:48 pm

1 stop19h 04m

Calgary

Wed 2/4

1:40 pm-10:20 am

1 stop19h 40m

$338

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/28

3:20 pm-12:48 pm

1 stop22h 28m

Calgary

Wed 2/4

6:30 am-9:15 pm

2 stops13h 45m

$339

St. LouisWinnipeg

STL - YWG

STLYWG

Lambert-St Louis

Thu 5/14

8:50 am-9:25 pm

2 stops12h 35m

Winnipeg

Wed 5/20

8:50 am-11:01 pm

1 stop14h 11m

$458

St. LouisWinnipeg

STL - YWG

STLYWG

Lambert-St Louis

Thu 5/14

8:50 am-9:25 pm

2 stops12h 35m

Winnipeg

Wed 5/20

10:45 am-8:31 pm

2 stops9h 46m

$471

St. LouisEdmonton

STL - YEG

STLYEG

Lambert-St Louis

Sun 1/18

8:45 am-2:14 pm

1 stop6h 29m

Edmonton

Wed 1/21

6:00 am-4:55 pm

1 stop9h 55m

$595

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Thu 5/14

7:45 am-2:18 pm

1 stop5h 33m

Québec City

Sat 5/30

6:00 am-3:21 pm

2 stops10h 21m

$606

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 Canada from

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

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 Canada?

If you aren’t able to travel during the month of April, then book flights to Canada from St. Louis during February instead. Flights to Canada in February, while not as cheap as those in April, still average around $349.

What is the cheapest day to depart on your flight to Canada?

Our data shows that Tuesday is the least expensive day to fly to Canada. Tickets to fly out on this day can be as low as $810. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Canada for around $978.

What is the cheapest time of day to depart on your flight to Canada?

In the afternoon is the cheapest time of day to fly from St. Louis to Canada when you can find flight prices for as low as $885. Flying to Canada in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Canada is at noon when prices are around $1,180.

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

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

How far in advance should I book a flight to Canada?

You are more likely to see cheaper flights to Canada from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Canada for around $508 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Canada from St. Louis for as low as $221 on momondo.

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

There are 4 cabin classes available to choose from on Lambert-St Louis to Canada 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 St. Louis to Canada flights?

You could potentially save up to 32% on your flight if you consider stops on a St. Louis to Canada flight.

Cheap St. Louis to Canada flight deals and tips

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

Best Price Found

$296

Fastest flight time

1h 51m

Direct flights

Every day

Airports in Canada

513 airports
The best one-way flight to Canada from St. Louis in the past 72 hours is $296. The best round-trip flight deal from St. Louis to Canada found on momondo in the last 72 hours is $675.
The fastest flight from St. Louis to Canada takes 1h 51m
Direct flights go from St. Louis to Canada every day.
There are 513 airports in Canada. From St. Louis there are direct flights to Montreal Pierre Elliott Trudeau Intl (YUL), Toronto Pearson Intl (YYZ).
Search flight deals

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

    Prices for flights from Lambert-St Louis Airport to Canada are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Canada.

  • What documentation or ID do you need to fly to Canada?

    The travel and health documents required for your trip to Canada can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Canada. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from St. Louis to Canada

Compare and see reviews for airlines that fly from St. Louis to Canada with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $169Free CancellationRating
7.9
8,023 reviews
Search Delta flights
Air CanadaPriceFrom $179Free CancellationRating
7.1
10,574 reviews
Search Air Canada flights
United AirlinesPriceFrom $199Free CancellationRating
7.4
9,128 reviews
Search United Airlines flights
American AirlinesPriceFrom $270Free CancellationRating
7.2
11,075 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $402Free CancellationRating
8.0
11,604 reviews
Search Alaska Airlines flights
WestJetPriceFrom $440Free CancellationRating
7.2
3,231 reviews
Search WestJet flights

Why use momondo?

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

It is quick and easy to find St. Louis to Canada flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Canada that suits you.

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

All flight searches from St. Louis to Canada on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Canada from St. Louis.

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

If you are not ready to book a flight from St. Louis to Canada now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Canada and let you know when they change.

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Find better results for your trip to Canada

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