$109 Find Cheap Flights from St. Louis to Canada

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Canada departing on 3/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from St. Louis to Canada

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Calgary
Calgary2 stops$390
Halifax
Halifax2 stops$361
Ottawa
Ottawa2 stops$303
Winnipeg
Winnipeg2 stops$434
Québec City
Québec City1 stop$691
Kelowna
Kelowna1 stop$435
St. John's
St. John's2 stops$731
Saskatoon
Saskatoon1 stop$517
Calgary
Calgary2 stops$390
Halifax
Halifax2 stops$361
Ottawa
Ottawa2 stops$303
Winnipeg
Winnipeg2 stops$434
Québec City
Québec City1 stop$691
Kelowna
Kelowna1 stop$435
St. John's
St. John's2 stops$731
Saskatoon
Saskatoon1 stop$517

Book Cheap St. Louis to Canada Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Canada that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
3:49 pm - 11:26 am
STL
-
YYZ
18h 37m
1 stop
Multiple Airlines Logo
7:15 am - 10:27 pm
YYZ
-
STL
16h 12m
1 stop
$218Multiple Airlines
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
8:17 pm - 11:26 am
STL
-
YYZ
14h 09m
2 stops
Multiple Airlines Logo
7:15 am - 10:27 pm
YYZ
-
STL
16h 12m
1 stop
$265Multiple Airlines
Wed, Apr 8 - Sat, Apr 11
American Airlines Logo
2:29 pm - 11:44 am
STL
-
YUL
20h 15m
1 stop
American Airlines Logo
12:30 pm - 10:14 pm
YUL
-
STL
10h 44m
1 stop
$332American Airlines
Wed, Apr 8 - Sat, Apr 11
American Airlines Logo
2:29 pm - 11:44 am
STL
-
YUL
20h 15m
1 stop
American Airlines Logo
1:03 pm - 11:48 pm
YUL
-
STL
11h 45m
2 stops
$342American Airlines
Wed, May 13 - Sat, May 16
Air Canada Logo
7:30 am - 8:30 pm
STL
-
YHZ
11h 00m
2 stops
Air Canada Logo
7:05 am - 12:06 pm
YHZ
-
STL
7h 01m
1 stop
$361Air Canada
Wed, May 13 - Sat, May 16
Air Canada Logo
7:30 am - 8:30 pm
STL
-
YHZ
11h 00m
2 stops
Air Canada Logo
1:25 pm - 8:04 pm
YHZ
-
STL
8h 39m
2 stops
$366Air Canada
Thu, Jun 18 - Sun, Jun 28
WestJet Logo
6:45 am - 9:45 pm
STL
-
YHZ
13h 00m
1 stop
WestJet Logo
3:30 pm - 1:17 pm
YHZ
-
STL
23h 47m
1 stop
$369WestJet
Thu, Jun 18 - Wed, Jun 24
WestJet Logo
2:18 pm - 9:45 pm
STL
-
YHZ
5h 27m
1 stop
WestJet Logo
3:30 pm - 9:30 am
YHZ
-
STL
20h 00m
1 stop
$371WestJet
Mon, Mar 2 - Wed, Mar 4
United Airlines Logo
6:55 pm - 11:31 am
STL
-
YYC
17h 36m
1 stop
United Airlines Logo
12:33 pm - 9:40 pm
YYC
-
STL
8h 07m
1 stop
$516United Airlines
Mon, Mar 2 - Wed, Mar 4
United Airlines Logo
6:55 pm - 11:31 am
STL
-
YYC
17h 36m
1 stop
United Airlines Logo
12:33 pm - 9:05 pm
YYC
-
STL
7h 32m
1 stop
$521United Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Canada flights

Get data-powered insights and trends into flights from St. Louis to Canada to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest St. Louis to Canada flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Canada from St. Louis found in the last 72 hours was to Toronto, at $350 round-trip. The most popular route is from St. Louis (STL) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $350.

Can I save money by flying with a layover from St. Louis to Canada?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $722, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Canada, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Canada is June, when tickets cost $363 (return) on average. On the other hand, the most expensive months are November and March, when the average cost of round-trip tickets is $676 and $583 respectively.

What’s the cheapest day of the week to fly from St. Louis to Canada?

The average price of all round-trip flights from St. Louis to Canada clicked on KAYAK for each day over the last 12 months.

When flying from St. Louis to Canada, you should consider leaving on a Tuesday and avoid Fridays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Tuesdays and the most expensive ones on Wednesdays.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Canada, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Canada, you should book around 6 weeks before departure, which saves you about 64% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonNovember
Cheapest flight$109
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from St. Louis to Toronto

FAQs - booking Canada flights

  • How does KAYAK find such low prices on flights from St. Louis to Canada?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Canada.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Canada?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Canada is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Canada?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Canada with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Canada?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Canada up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Canada?

    The cheapest time of day to fly to Canada is generally in the evening, when round-trip flights cost $864 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to Canada is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,115.

Reviews of the top 5 airlines serving from St. Louis to Canada

 
Need help choosing which airline to fly with from St. Louis to Canada? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8124 reviews
8.5Crew
8.1Boarding
7.8Entertainment
7.9Comfort
7.2Food
Airline reviews

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

10.0 ExcellentDr. Simon, Jan 2026
LAX - JFK
Read more Delta reviews

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Timing, quality of service, promptness and courtesy of the staff

It was last minute due to weather - considering - it was amazing! Good smiles, friendly staff and they were making sure we knew what was going on when and where.

delta last minute gave me a boarding pass for a different flight with no confirmation that they were changing it

The flight was comfortable and uneventful, which is what I desire

The service from the flight attendants were of supreme quality. They greeted and treated everyone with a wide smile. This is totally absent nowadays. Kudos to them!!!!

Excellent flight and got us around tough weather. Only issue was seat TV did not work and crew tried to reboot.

Very large passenger too space from my own seat. Arm board couldn’t be lowered because of his size. It wads very uncomfortable trip, as the flight was full couldn’t move anywhere having back pain because of the position in which I was the entire flight.

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Outdated equipment in disrepair, wifi inoperable. Broken seats, taped air vents, generally poor condition, the 717 showed its age and lack of upkeep.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

Flight was delayed. De-icing took a while. When we landed had to wait for another plane to vacate our gate. Just an overall bad experience.

Not United Airlines' fault. It's ORL airport's fault.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

Flight was good but there are way to many announcements for credit cards etc.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

I was trying to take 2 one and a half hour one way trips and I experienced almost 20 delays over the course of those two trips. Only a few of them were due to weather the rest was disorganization

No gates avail at DFW so our incoming had to wait 30 mins for a plane to push back because they Had mechanical. We boarded 90 mins delayed and then we had a mechanical. Come on American…do better. Also at my seat the tray table had not been cleaned. Floor had not been cleaned. But captain and flight Att were very picture and apologetic.

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

Flight was smooth, quick and felt safe. The 2 delays not happening would have been better but I guess that happens in the airline industry

Flight was canceled. I asked to be rerouted to OKC and then took an Uber.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

On time on a day with lots of weather cancellations on other flights. Thank you for getting me home during a winter storm!

Don't change gate multiple times make people run across the airport. Announce delays in a timely manner. Have maintenance crew ready. Don't delay and keep passengers on the plane for 3 hrs. on tarmac.

The plane was experiencing problems with the HVAC system, it was very cold in the front of the plane and very hot in the back.

My flight to London from Philadelphia was cancelled due to weather.

Flight was good, crew was excellent. No complaints at all

Delayed 3 times in a row for 4 hours total. Incrementally pushing back the flight claiming gate delays but they eventually changed the actual plane, due to technical issues. This strategy to avoid compensation to passengers is unprofessional.

Plane seating was uncomfortable, very tight fitting for someone my height, did not recline and overall un enjoyable

Everything was good except for flight delay, but it was because of the snow storm in the arrival airport.

No communication from Kayak or West Jet. Booked extra flights, flights cancelled, no one answers calls. Will be disputing charges.

The trip from LAX to Calgary was aboard a 737-700, which is more than twenty years old. Service was fine, and the food was good, but there was no inflight entertainment, and no WiFi. The flight from Calgary to Vancouver was also delayed more than an hour, due to congestion on the Calgary tarmac. And no food service, but there was in-flight WiFi which made a big difference.

Leg room is a problem the plane was dirty and there were no movies available on the app

The personal item sizer cannot take a standard backpack, and the cabin luggage sizer cannot take a standard carry-on. Designed for people from the island of Lilliput!!. and also compels people to pay additional fees to check their bags. Making money by ticking off the passengers is a very short-sighted business strategy, especially since they have a choice of carriers

my wife got very sick and we did not travel . we booked and bought the travel insurance and dot nothing but hassle and a triangle of stress in trying to make the insurance claim I called in and was told they would not give me anything in writing to say they would not refund my money back this make it impossible to file the claim I will never book with Kayak again.

We got delayed to the point of having a 20 hour layover. That is absurd. I couldn’t believe it. I’m furious.

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Nothing specific. Cabin temperature was too high for some reason.

Everything you need to know for your flight from St. Louis to Canada

Information on your arrival and departure airports