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Cheap flights from St. Louis to Canada from $138

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 9/9. 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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Find the cheapest flights from St. Louis to Canada

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:19 pm - 8:05 pm
STL
-
YYZ
26h 46m
1 stop
Multiple Airlines Logo
7:45 am - 11:57 pm
YYZ
-
STL
17h 12m
1 stop
$302Multiple Airlines
Mon, May 11 - Sat, May 23
Multiple Airlines Logo
4:19 pm - 8:05 pm
STL
-
YYZ
26h 46m
1 stop
Multiple Airlines Logo
4:50 pm - 11:57 pm
YYZ
-
STL
8h 07m
1 stop
$303Multiple Airlines
Mon, May 11 - Sun, May 24
United Airlines Logo
5:10 am - 9:51 am
STL
-
YVR
6h 41m
1 stop
United Airlines Logo
7:00 am - 6:17 pm
YVR
-
STL
9h 17m
1 stop
$326United Airlines
Tue, Jul 7 - Wed, Jul 15
Delta Logo
2:15 pm - 10:27 pm
STL
-
YVR
10h 12m
1 stop
Delta Logo
2:26 pm - 11:01 pm
YVR
-
STL
6h 35m
1 stop
$330Delta
Wed, Aug 12 - Thu, Aug 20
United Airlines Logo
5:10 am - 9:51 am
STL
-
YVR
6h 41m
1 stop
United Airlines Logo
12:09 pm - 11:50 pm
YVR
-
STL
9h 41m
2 stops
$336United Airlines
Tue, Aug 25 - Tue, Sep 1
American Airlines Logo
6:00 am - 11:43 pm
STL
-
YYC
18h 43m
1 stop
American Airlines Logo
6:15 am - 4:30 pm
YYC
-
STL
9h 15m
1 stop
$356American Airlines
Wed, May 27 - Wed, Jun 3
Air Canada Logo
7:05 am - 1:05 pm
STL
-
YOW
5h 00m
1 stop
Air Canada Logo
7:00 am - 12:06 pm
YOW
-
STL
6h 06m
1 stop
$357Air Canada
Sat, May 30 - Sat, Jun 6
American Airlines Logo
6:15 am - 1:42 pm
STL
-
YHZ
5h 27m
1 stop
American Airlines Logo
2:27 pm - 10:37 am
YHZ
-
STL
22h 10m
1 stop
$361American Airlines
Tue, Jun 16 - Tue, Jun 23
Air Canada Logo
2:15 pm - 10:09 pm
STL
-
YHZ
5h 54m
1 stop
Air Canada Logo
6:00 am - 12:06 pm
YHZ
-
STL
8h 06m
1 stop
$363Air Canada
Mon, Jun 8 - Wed, Jun 10
Delta Logo
2:15 pm - 10:27 pm
STL
-
YVR
10h 12m
1 stop
Delta Logo
6:50 am - 6:00 pm
YVR
-
STL
9h 10m
1 stop
$380Delta
Tue, Aug 11 - Wed, Aug 19

American Airlines flights from St. Louis to Canada

Our best American Airlines deals on St. Louis to Canada flight tickets
American Airlines
May 27
STL6:00 amLambert-St Louis
18h 43m
1 stop
YYC11:43 pmCalgary
Jun 3
YYC6:15 amCalgary
9h 15m
1 stop
STL4:30 pmLambert-St Louis
$356
American Airlines
Jun 16
STL6:15 amLambert-St Louis
5h 27m
1 stop
YHZ1:42 pmHalifax Intl
Jun 23
YHZ2:27 pmHalifax Intl
22h 10m
1 stop
STL10:37 amLambert-St Louis
$361
American Airlines
Jun 17
STL6:00 amLambert-St Louis
7h 28m
1 stop
YYZ2:28 pmToronto Pearson Intl
Jun 24
YYZ11:39 amToronto Pearson Intl
9h 47m
1 stop
STL8:26 pmLambert-St Louis
$377

United Airlines flights from St. Louis to Canada

Our best United Airlines deals on St. Louis to Canada flight tickets
United Airlines
Jul 7
STL5:10 amLambert-St Louis
6h 41m
1 stop
YVR9:51 amVancouver Intl
Jul 15
YVR7:00 amVancouver Intl
9h 17m
1 stop
STL6:17 pmLambert-St Louis
$326
United Airlines
Aug 25
STL5:10 amLambert-St Louis
6h 41m
1 stop
YVR9:51 amVancouver Intl
Sep 1
YVR12:09 pmVancouver Intl
9h 41m
2 stops
STL11:50 pmLambert-St Louis
$336
United Airlines
Aug 10
STL5:10 amLambert-St Louis
6h 41m
1 stop
YVR9:51 amVancouver Intl
Aug 20
YVR3:35 pmVancouver Intl
6h 15m
1 stop
STL11:50 pmLambert-St Louis
$347

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 April 17, 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

Cheapest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 5/11

4:19 pm-8:05 pm

1 stop26h 46m

Toronto Pearson Intl

Sat 5/23

7:45 am-11:57 pm

1 stop17h 12m

$302

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 5/11

4:19 pm-8:05 pm

1 stop26h 46m

Toronto Pearson Intl

Sun 5/24

4:50 pm-11:57 pm

1 stop8h 07m

$303

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Tue 7/7

5:10 am-9:51 am

1 stop6h 41m

Vancouver Intl

Wed 7/15

7:00 am-6:17 pm

1 stop9h 17m

$326

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Wed 8/12

2:15 pm-10:27 pm

1 stop10h 12m

Vancouver Intl

Thu 8/20

2:26 pm-11:01 pm

1 stop6h 35m

$330

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Tue 8/25

5:10 am-9:51 am

1 stop6h 41m

Vancouver Intl

Tue 9/1

12:09 pm-11:50 pm

2 stops9h 41m

$336

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 5/27

6:00 am-11:43 pm

1 stop18h 43m

Calgary

Wed 6/3

6:15 am-4:30 pm

1 stop9h 15m

$356
Quickest round-trip

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 5/30

7:05 am-1:05 pm

1 stop5h 00m

Ottawa

Sat 6/6

7:00 am-12:06 pm

1 stop6h 06m

$357

St. LouisHalifax

STL - YHZ

STLYHZ

Lambert-St Louis

Tue 6/16

6:15 am-1:42 pm

1 stop5h 27m

Halifax Intl

Tue 6/23

2:27 pm-10:37 am

1 stop22h 10m

$361

St. LouisHalifax

STL - YHZ

STLYHZ

Lambert-St Louis

Mon 6/8

2:15 pm-10:09 pm

1 stop5h 54m

Halifax Intl

Wed 6/10

6:00 am-12:06 pm

1 stop8h 06m

$363

St. LouisVancouver

STL - YVR

STLYVR

Lambert-St Louis

Tue 8/11

2:15 pm-10:27 pm

1 stop10h 12m

Vancouver Intl

Wed 8/19

6:50 am-6:00 pm

1 stop9h 10m

$380

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 June, then book flights to Canada from St. Louis during May instead. Flights to Canada in May, while not as cheap as those in June, still average around $459.

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

Our data shows that Wednesday is the least expensive day to fly to Canada. Tickets to fly out on this day can be as low as $823. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Canada for around $920.

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 $806. 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 $1,029.

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

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 50% 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

$337

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 $337. The best round-trip flight deal from St. Louis to Canada found on momondo in the last 72 hours is $799.
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), Vancouver Intl (YVR), Toronto Pearson Intl (YYZ).
Search flight deals

Frequently asked questions about flying from St. Louis to Canada

  • 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
Air CanadaPriceFrom $139Free CancellationRating
7.1
10,932 reviews
Search Air Canada flights
DeltaPriceFrom $142Free CancellationRating
7.9
8,406 reviews
Search Delta flights
United AirlinesPriceFrom $199Free CancellationRating
7.4
9,602 reviews
Search United Airlines flights
American AirlinesPriceFrom $270Free CancellationRating
7.1
11,593 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $402Free CancellationRating
7.9
12,253 reviews
Search Alaska Airlines flights
WestJetPriceFrom $479Free CancellationRating
7.2
3,321 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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