$119 Find Cheap Flights from Canada to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 12/3. 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

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to St. Louis, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Canada to St. Louis

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Canada to St. Louis 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 Canada to St. Louis

Fri, Jan 23 - Sun, Jan 25
Multiple Airlines Logo
9:30 am - 10:33 pmYOW-STL
14h 03m1 stop
Multiple Airlines Logo
5:11 pm - 5:13 pmSTL-YOW
23h 02m1 stop
$242Multiple Airlines
Find Deal
Mon, Dec 22 - Tue, Dec 30
American Airlines Logo
1:31 pm - 1:17 pmYYC-STL
22h 46m1 stop
American Airlines Logo
8:01 pm - 12:51 pmSTL-YYC
17h 50m1 stop
$249American Airlines
Find Deal
Tue, Apr 7 - Wed, Apr 8
United Airlines Logo
2:50 pm - 9:55 pmYHZ-STL
9h 05m1 stop
United Airlines Logo
6:30 am - 1:54 pmSTL-YHZ
5h 24m1 stop
$280United Airlines
Find Deal
Tue, Apr 7 - Wed, Apr 8
United Airlines Logo
2:50 pm - 9:55 pmYHZ-STL
9h 05m1 stop
United Airlines Logo
9:30 am - 11:44 pmSTL-YHZ
12h 14m2 stops
$281United Airlines
Find Deal
Thu, Nov 27 - Tue, Dec 2
Air Canada Logo
5:35 am - 3:29 pmYHZ-STL
11h 54m2 stops
Air Canada Logo
4:05 pm - 12:26 amSTL-YHZ
6h 21m1 stop
$287Air Canada
Find Deal
Thu, Nov 27 - Tue, Dec 2
Air Canada Logo
5:35 am - 3:29 pmYHZ-STL
11h 54m2 stops
Air Canada Logo
4:05 pm - 12:26 amSTL-YHZ
6h 21m1 stop
$288Air Canada
Find Deal
Tue, Nov 25 - Tue, Dec 2
Delta Logo
12:07 pm - 11:23 pmYVR-STL
9h 16m1 stop
Delta Logo
6:30 am - 12:27 pmSTL-YVR
7h 57m1 stop
$358Delta
Find Deal
Wed, Nov 26 - Wed, Dec 3
Delta Logo
12:07 pm - 11:23 pmYVR-STL
9h 16m1 stop
Delta Logo
2:20 pm - 10:44 pmSTL-YVR
10h 24m1 stop
$381Delta
Find Deal
Tue, Mar 3 - Wed, Mar 4
Alaska Airlines Logo
6:15 am - 11:56 pmYYJ-STL
15h 41m1 stop
Alaska Airlines Logo
7:00 am - 10:33 pmSTL-YYJ
17h 33m1 stop
$408Alaska Airlines
Find Deal
Tue, Mar 3 - Wed, Mar 4
Alaska Airlines Logo
6:15 am - 11:56 pmYYJ-STL
15h 41m1 stop
Alaska Airlines Logo
7:00 am - 4:38 pmSTL-YYJ
11h 38m1 stop
$409Alaska Airlines
Find Deal

Everything you should know

Top routes
YVR-STL
Cheapest
YYZ-STL
Most popular
Insights
Insights
Insights
Insights
When to travel
June
Cheapest • 23% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$242
Overall average: $679
Multiple Airlines
Fri 1/23Sun 1/25
YOW - STL • 1 stop
Cheapest non-stop
$363
Typical prices: $418-$1,040
Air Canada
Fri 11/21Mon 11/24
YYZ - STL • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Booking Insights

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

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

What is the cheapest flight to St. Louis?

These are the best round-trip prices found by users searching on KAYAK in the last 72 hours.

In the last 3 days, the lowest price for a flight to St. Louis was $119 for a one-way ticket from Vancouver and $242 for a round-trip. The most popular route searched for by our users was for flights from Toronto to St. Louis and the best round-trip deal found in the last 3 days was $303.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to St. Louis, 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 to St. Louis is May, where tickets cost $448 on average for one-way flights. On the other hand, the most expensive months are August and December, where the average cost of tickets from Canada is $774 and $745 respectively. For return trips, the best month to travel is June with an average price of $372.

What is a good deal for flights to St. Louis?

If you’re looking for cheap airfare to St. Louis, 25% of our users found tickets to St. Louis for the following prices or less: From Toronto Pearson Intl Airport $323 one-way - $489 round-trip.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to St. Louis, 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, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 21 days before departure.

Good to know

Low seasonSeptember
Cheapest flight$119
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from Vancouver to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 3 days, the lowest price for a flight to St. Louis was $119 for a one-way ticket from Vancouver and $242 for a round-trip. The most popular route searched for by our users was for flights from Toronto to St. Louis and the best round-trip deal found in the last 3 days was $303.

  • How far is Lambert-St Louis Airport from central St. Louis?

    Central St. Louis is 13 miles away from Lambert-St Louis Airport.

  • What is the name of St. Louis’s airport?

    When flying to St. Louis, you'll arrive at Lambert-St Louis Airport (STL). The airport is also known as Lambert Field, Lambert-St Louis, St. Louis Lambert, or St. Louis Lambert Intl.

  • How much is a flight to St. Louis?

    On average, a flight to St. Louis costs $422. The cheapest price found on KAYAK in the last 2 weeks cost $297 and departed from Toronto Pearson Intl Airport.

  • What is the cheapest day to fly to St. Louis?

    Based on KAYAK data, the cheapest day to fly to St. Louis is Saturday where tickets can be as cheap as $406. On the other hand, the most expensive day to fly is Monday, where prices are $600 on average.

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

    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 to St. Louis.

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

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

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

    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 to St. Louis 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 to St. Louis?

    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 to St. Louis 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 St. Louis?

    The cheapest time of day to fly to St. Louis is generally in the morning, when flights cost $326 on average. The most expensive time of day to fly to St. Louis is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $486.

Top tips for finding cheap flights to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $323 or less one-way and $489 or less round-trip.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest St. Louis flight deals.

Reviews of the top 4 airlines serving from Canada to St. Louis

 
See real verified KAYAK customer reviews for airlines flying to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Canada to St. Louis. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to St. Louis? 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 7993 reviews
7.9Comfort
7.9Entertainment
8.5Crew
8.2Boarding
7.3Food
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

Seats comfortable, service and food very mediocre, staff not very attentive, worse than many other our flights with Delta.

Overall good experience; however, there was one flight attendant who was rather rough compared to everyone else. Everything else was good: entertainment, food. Delta keeps on delivering! Thank you!

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Crew blocked exits to front of ship with galley carts. Also split five person family apart on international flight without fixing.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

The experience was great, the crew was very polite and hospitable. I will definitely make if my go to airlines.

It was all good flight was on time, service was good I enjoyed a few movies and everything was smooth

Efficient, calm when things were delayed and kept us regularly informed of what was happening.

The flight attendant, a black woman with curly hair who sat near Row 21, was wonderful and kind.

It was good..clean, comfy seat. Friendly warm welcoming crew. Was able to check my cabin luggage at the gate which I was able to pickup in a decent time from baggage claim. The app gave all updates from delays to baggage claim info. Overall smooth flight.

Nice comfortable flight from Barcelona back to the states. The premium economy offers the extra room we need for my husband. The food was good and our flight attendants were excellent.

Flight was delayed leaving Dallas. Arrived about 2 hours later than scheduled.

Flight delayed and missed connection. Rescheduled flight cancelled after 6 hrs wait. Rerouted thru ORD, flight cancelled, overnight stay in ORD. Still in the air on new flight!

We are too tired and frustrated to comment politely at this point

Terrible. Our luggage was delayed and couldn’t be delivered for several days. We got bad information from the airline agents at baggage claim. We had to pick up our car so we wouldn’t be charged for an extra day. We got lost in the maze of airport parking. The baggage claim agents didn’t offer us any compensation for our extra time and expense. We are tired, hungry and very frustrated.

The flight was flawless and we even arrived between 20 and 25 minutes early!

The only thing to like was that we eventually got to our destination

Delayed delayed delayed and no offer for food or vouchers

The free Wi-fi for Aeroplan members was a great touch. The time passed quickly. I found the seats seemed a little closer together than I remember. Not Air Canada's fault, but we were about 20 minutes late landing because the airport was too busy. We had to circle around for a while. The boarding and disembarking went very smoothly.

It was crazy, boarded over a hour late from scheduled departure. Then when arrived in BNA issued with getting off the plane…over 1/2 hour. Not looking forward to flying Air Canada, ever again.

Extremely turbulent landing. Crew was friendly and plane comfortable. Airport and US pre clearance was understaffed

The airplane is way too tight, you can hardly enter into your row to sit.. more like kids seats than adults.

taking our carryon and forcing us to check it through

Wifi was great. Kind air crew and comfortable seating. Also liked the entertainment options.

Great flight. Only complaint is it took over an hour for my luggage to get to the carousel on the return to LAX That was irritating

I knew I was going to fall asleep unsettlingly from exhaustion so I warned the guy next to me in advance. The attendant took to checking on me frequently and even insisted I take my snack because I said no while sleep hazed and then absolutely wanted it about 5 minutes later. He was So caring and kind to my situation!!

First message when all on board was that we didnt have a pilot, then they found one, then it was something about the bridge something not working, they will either fix or do manually. Flight of course was leaving late with all the cruise guests worrying about making it to their ship in time. Then only some luggage made it off the ship. Around 15 to 20 people waiting. 45 min later arrived except mine. I asked the rep at the luggage conveyor, he asked me my name. Then said it was not picked up with the first batch so they put it in a room. I was going to take public transport but now worried about time so took a taxi that cost me $65 USD

The flight was very smooth and good. Boarding was fast, but the staff was just decently friendly.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
O'Fallon
Wentzville
Farmington
Eureka
Litchfield
Grafton
Shrewsbury
Glencoe

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

Information on the airport you'll fly into in St. Louis

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