$152 Find Cheap Flights from Canada to St. Louis - Compare and Save

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 8/28. 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.
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1 adult, Economy, 0 bags

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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

Wed, Aug 26 - Tue, Sep 8
United Airlines Logo
5:25 pm - 3:38 pmYVR  Vancouver Intl-STL Lambert-St Louis
20h 13m2 stops San Francisco Chicago O'Hare Intl
United Airlines Logo
5:30 pm - 10:25 pmSTL  Lambert-St Louis-YVR Vancouver Intl
6h 55m1 stop Chicago O'Hare Intl
$280United Airlines
Wed, Aug 26 - Mon, Sep 7
United Airlines Logo
7:00 am - 6:39 pmYVR  Vancouver Intl-STL Lambert-St Louis
9h 39m1 stop San Francisco
United Airlines Logo
8:00 am - 10:25 pmSTL  Lambert-St Louis-YVR Vancouver Intl
16h 25m1 stop Chicago O'Hare Intl
$280United Airlines
Wed, Oct 28 - Fri, Oct 30
Delta Logo
6:00 am - 4:43 pmYVR  Vancouver Intl-STL Lambert-St Louis
8h 43m1 stop Minneapolis St Paul
Delta Logo
3:35 pm - 8:33 pmSTL  Lambert-St Louis-YVR Vancouver Intl
6h 58m1 stop Minneapolis St Paul
$280Delta
Wed, Oct 7 - Wed, Oct 21
WestJet Logo
6:00 am - 2:45 pmYVR  Vancouver Intl-STL Lambert-St Louis
6h 45m1 stop Minneapolis St Paul
WestJet Logo
6:21 am - 10:50 amSTL  Lambert-St Louis-YVR Vancouver Intl
6h 29m1 stop Minneapolis St Paul
$282WestJet
Tue, Oct 6 - Wed, Oct 21
Air Canada Logo
7:30 am - 6:41 pmYVR  Vancouver Intl-STL Lambert-St Louis
9h 11m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
12:10 pm - 8:15 pmSTL  Lambert-St Louis-YVR Vancouver Intl
10h 05m1 stop Montreal Pierre Elliott Trudeau Intl
$283Air Canada
Wed, Sep 30 - Wed, Oct 7
American Airlines Logo
1:40 pm - 12:27 amYVR  Vancouver Intl-STL Lambert-St Louis
8h 47m1 stop Chicago O'Hare Intl
American Airlines Logo
5:40 am - 10:53 amSTL  Lambert-St Louis-YVR Vancouver Intl
7h 13m1 stop Dallas/Fort Worth
$289American Airlines
Wed, Oct 7 - Wed, Oct 21
WestJet Logo
6:00 am - 2:45 pmYVR  Vancouver Intl-STL Lambert-St Louis
6h 45m1 stop Minneapolis St Paul
WestJet Logo
6:21 am - 10:50 amSTL  Lambert-St Louis-YVR Vancouver Intl
6h 29m1 stop Minneapolis St Paul
$305WestJet
Wed, Oct 14 - Fri, Oct 23
Multiple Airlines Logo
7:00 am - 9:40 amYYC  Calgary-STL Lambert-St Louis
25h 40m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
10:35 am - 11:00 amSTL  Lambert-St Louis-YYC Calgary
25h 25m1 stop Atlanta Hartsfield-Jackson
$327Multiple Airlines
Mon, Sep 21 - Wed, Sep 30
Air Canada Logo
6:00 am - 2:00 pmYHZ  Halifax Intl-STL Lambert-St Louis
10h 00m1 stop Toronto Pearson Intl
Air Canada Logo
8:55 am - 5:14 pmSTL  Lambert-St Louis-YHZ Halifax Intl
6h 19m1 stop Toronto Pearson Intl
$354Air Canada
Thu, Aug 27 - Mon, Sep 7
American Airlines Logo
2:12 pm - 11:42 pmYVR  Vancouver Intl-STL Lambert-St Louis
7h 30m1 stop Dallas/Fort Worth
American Airlines Logo
5:42 am - 10:45 amSTL  Lambert-St Louis-YVR Vancouver Intl
7h 03m1 stop Dallas/Fort Worth
$366American Airlines
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 5 days.

In the last 5 days, the cheapest flight deal to St. Louis was found on the route from Vancouver, at $280 return. The most popular connection is from Toronto to St. Louis and KAYAK users have found round-trip deals for as low as $372 in the last 5 days.

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

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

Based on KAYAK data, the cheapest day to fly to St. Louis is Sunday where round-trip tickets can be as cheap as $394. On the other hand, the most expensive day to fly is Monday, where round-trip prices are $548 on average.

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 round-trip 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 January, where tickets cost $421 on average for return flights. On the other hand, the most expensive months are April and March, where the average cost of tickets from Canada is $557 and $552 respectively. For one-way flights, the best month to travel is November with an average price of $251.

What is the cheapest time of day to fly to St. Louis?

The average price for all round-trip flights to St. Louis depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to St. Louis is generally in the afternoon, when round-trip flights cost $418 on average. The most expensive time of day to fly to St. Louis is generally at night, which is peak travel time and where the average cost of a ticket is $584.

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 4 weeks before departure, which saves you about 51% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low season

February

Cheapest flight

$152
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Vancouver to St. Louis

FAQs - booking St. Louis flights

  • What is the cheapest flight to St. Louis?

    In the last 5 days, the cheapest flight deal to St. Louis was found on the route from Vancouver, at $280 return. The most popular connection is from Toronto to St. Louis and KAYAK users have found round-trip deals for as low as $372 in the last 5 days.

  • 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 $334. The cheapest price found on KAYAK in the last 2 weeks cost $264 and departed from Montreal Pierre Elliott Trudeau Intl Airport.

  • 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.

Top tips for finding cheap flights to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $299 or less one-way.
  • 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 5 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
Alaska AirlinesOverall score based on 12802 reviews
7.8Comfort
8.1Boarding
7.0Entertainment
8.5Crew
7.0Food
Airline reviews

Flight was delayed by almost 2 hours due to air control and no available plane. We didnt land until after 1:30am. And it changed my whole vacation, no sleep the 1st night

2.0 MediocreKerry, Aug 2026
Read more Alaska Airlines reviews

Flight was delayed by almost 2 hours due to air control and no available plane. We didnt land until after 1:30am. And it changed my whole vacation, no sleep the 1st night

When I checked in with full service, requesting a wheelchair, as I had asked for ahead of time, the customer service agent said “wait over there, nothing more. I waited in the designated space for about 40 minutes before learning from another passenger that I needed to check in again at a specific assistance desk. I was early, so I made it on time to my flight. Your agent should not assume I knew anything, which I didn’t. This was all new, in a recently remodeled space. New to me, anyway.

SeaTac airport hottible No signage to tell you where to go Took one and half hour to make to gate after being dropped at airport HORRIBLE LOTS OF yelling at patrons EXTREMELY HORRIBLE AND SCARY!

Late boarding, but the flight was smooth and the crew was accommodating.

The flight was delayed almost an hour. No wifi on flight.

Flight was OK, landing not good, boarding was ridiculous. Flight was to load at gate n11 25 minutes before boarding time it was changed to s5 which is 3 tram connections on the other side of the airport, I'm handicapped and even getting a sky cap took 10 minutes needless to say just made it to boarding only because it was delayed. I did learn a valuable lesson don't show up for flight 2 hours early.

Leg room was quite OK. Customer service from the crew was spot on.

The Alaska airlines flight attendants were great. Boarding went smoothly. The cabin was comfortable intitially, and seemed stuffy later. I tried to open the vents but they were not very powerful to cool our seating down. Ride was smooth. They left the gate early and arrived early. The pubic address used by attendants was scratchy. No, it wasn’t their voices it was their system.

I was trying to switch from a middle seat to an aisle seat which usually I am able to. They did not want to switch seats for me and we're trying to charge me $80. I was sitting next to a bunch of kids that were really loud. Thankfully, I was seating between two very kind people.

service was good. flight attendants were friendly. flight was smooth.

The website check in was poor. Baggage fees were in US dollars but registered in Canadian dollars. The site would not accept my credit card. Scanning the passport was the worst. Someone from United needs to try the process. I’m not a novice with tech and I have to say this was a bad experience. Everything else was great.

Flight was delayed “due to earlier delays of that plane”, so we were nearly three hours late.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airport terminal was outdated, flight was on a small jet with no wifi

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

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.

Short flight - no food understandable. Flight was delayed for over an hour. Overall, it was good.

We boarded and buckled and then deplaned due to no pilot. Had to wait over 3 hours for a new pilot. Not weather related, just poor management.

Last minute gate change nearly caused us to miss our flight. Change was not announced or displayed in the main board at the old gate. Terrible communication. When we landed we had to wait 20 minutes because there was another plane at the assigned gate. Not the crew’s fault, but adding 20 minutes to a 45 minute flight sucked.

I'm so frustrated my flight was canceled they give flight on August 5 which is not sure. Its was big mistake I booked my ticket from kayak.

Maybe glass of wine would be nice at no charge

We traveled with a 7 year old that has autism and he is significantly cognitively delayed. Your site makes it known there are no wagons allowed even if they fold down flat and many autistic children cannot travel without one because they are unable to follow directions or cooperate with walking through the airport and are too big for a stroller. Please consider making exceptions for our special needs children. Also it would be very thoughtful if you’d allow seat selection for no fee for special needs families. The autistic child we traveled with must sit behind another adult in our family because he continuously kicks the seat in front of him and is unable to understand why that is disruptive. We had to pay quite a bit extra to have our 4 seats situated with 2 in row 19 and 2 in row 20 directly behind.

Our itinerary included a 1 hour and 30 minute layover, which should have been sufficient under normal circumstances. However, our original flight was delayed. Before we even deplaned, we were instructed to collect our checked bags from baggage claim, clear immigration and customs, and then recheck our bags for the connecting flight. The airline knew—or should have known—that this was impossible. Checked baggage acceptance closes one hour before departure, meaning there was no realistic way for passengers from the delayed flight to recheck their bags in time. Despite this, the airline gave us misleading instructions instead of informing us that we would likely miss our connection. We completed immigration and customs in approximately 10 minutes, but our checked bags did not arrive at the carousel for more than 30 minutes. After collecting them, we had another 10-minute walk to the baggage drop area, only to find that no airline attendant was present. We then went to another airline counter, where an employee told us this had happened before and that there was nothing they could do because the baggage acceptance window had already closed. At that point, there were still 40 minutes remaining before our flight's departure, yet no one was willing to assist or offer a practical solution. When we asked to be rebooked, we were simply told to call the airline's 800 number ourselves. There was no accountability or customer support at the airport, leaving us stranded in a foreign country with no immediate assistance. After finally reaching an agent on the 800 number, we were rebooked on a flight for the following day. However, we were initially told that the airline would not provide any hotel accommodation and that we would have to arrange and pay for it ourselves. Only after making multiple calls and speaking with several different agents did one representative finally issue a hotel voucher. The entire experience was an exhausting and frustrating ordeal. What should have been a 20-hour journey ultimately became more than 30 hours due to the airline's poor planning, misleading instructions, lack of accountability, and inadequate customer service. The unnecessary delays, confusion, and absence of meaningful assistance caused significant physical exhaustion and severe mental stress. This experience fell far below the level of service passengers should reasonably expect.

Despite travelling ultra basic for the first time due to such increased rates we both managed with one bag each. Even boarding last wasn’t SO bad.

I loved the fact it was on time and it was a smooth flight to my destination.

Service was okay except attendant over served alcohol to passenger and passenger got tipsy and made me uncomfortable

Could not make the flight. No one would help us at all

The agents at the Kelowna YLW airport were really grumpy. Same with oversized baggage person. Staff on the plane were great.

Flight was early. That’s the only positive I can share. I paid for wifi on the flight and it didn’t allow me to use any streaming services so it was a waste of $20. West Jet also lost my ski equipment on my way to a ski vacation. They told me it would be delivered to the hotel as soon as it arrived at the airport. It was never delivered. I had to pick it up at the airport on my way home. I am completely disgusted with my experience on west jet

We called Kayak for a change due to the TSA situation in Atlanta. What we got was a canceled return flight (in error) and we had to find the mistake. Not happy with Kayak who blamed it on AA.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Boarding delayed 20 minutes for no reason, no wifi, in flight entertainment, or snacks / waters?

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Improvements in communication and empathy are absolutely necessary for American Airlines staff (top down). It’s like they are numb to the needs of their customers.

I like the speed of boarding and deplaning and the fact that everything was on time. The crew (attendants) were probably quite new and did not begin the in cabin service until 30 min before landing even though there was little to no air turbulence for the last 1.5 hours of the flight. It made for a mad scramble at the end to get trash collected and carts stowed before touch down.

The flights was delayed by hours and it was the firmest landing I have experienced in my life. My back is still sore.

I did like the employee's, they are very friendly and all smiled most of the time, Overall, from checking in bags to getting on plane, not enough employees to be able to get all on the plane, therefore I was not able to get on the plane, due to no one wea there for me to check in my bag, so I decided to go thru the security point and by the time they were done with my bags, I was told that my bag cannot be checked in, and then found out that the lady that does the check in was boarding the customers onto the plane, she said that she was going back and fourth, there for was not able to get on the plane, which changed all my flights by the time I got to Dallas, I was on standby 3 times, and wasn't sure about being able to get on the fourth plane, so ended up buying another plane ticket, so I could make my destination on time.

Not sure about entertainment as I didn't use any, so maybe there should be an NA option on this survey. Otherwise everything was just as it should be. Of course I wish planes were more comfortable and had seats that would tilt back further.

American Airlines “Randy” questioned why I needed preboarding and denied my request for same. Then Randy attempted to berate me when I boarded with my group. I was seated in an exit roll with a young man with a disability that exhibited difficulty controlling and settling himself. But Tandy questioned my disability. The flight was horrible. It was overpacked.

Delayed on the way in 2 hours!!! And now on the way home delayed then cancelled!!!!!

Delay in luggage again for the second time of the trip. I would not advise using air Canada or at least I will never check in a luggage. Luggage issue overshadows the nice crew members unfortunately.

If I’m gonna sit in the 39th row You might as well let me on after the first class passengers Especially if I have no luggage for overhead Just a thought

The baggage drop-off for Air Canada in Toronto for passengers flying international was terrible. One of the worst experiences I have ever had. The line was ridiculous; there was no one to help facilitate people avoid confusion, and the baggage system for the line I finally ended up in had to be re-booted right as I got to it.

Flight got canceled. Instead of the booking me for the next flight at night I was booked for the following day at a later time. I was able to fly out that night because I had to call and deal with a human!!!

It was great! Very comfortable plane, crew was great, would definitely take this flight again.

Flying with Air Canada is not pleasant at all. The plane is very old, meaning that there is no on board entertainment, the leg room is less, and it is dirty and in poor repair. To make matters worse, the crew was pleasant enough on my initial fight, but very rude on the return flight. Furthermore, the website advertises many amenities for international flights that are not honored when you were flying from the US to Canada even if your flight is five hours long. Even if you are willing to purchase food, they will likely not have over half of the advertised options available. In addition, you will pay twice the amount of a child’s order for an adult order of same item even though it is the same size as the children’s. It was just really bad on many levels I will try to avoid flying with Air Canada again at all costs

Everything was great except that I wasn’t issued a boarding pass for the second flight so they would not let me into customs until I had said boarding pass. Luckily a gate attendant from another Air Canada flight was able to print one for me so I could go through.

I suppose to board the plane AC5110 to San Francisco on July 16 2026 @07:00 am and arrive San Francisco at 09:25 am. At 9:30am still in YVR I was told the plane was delayed until 11:30 am to take off. Not until 11:35am the pilot of the plane declared that due to hydraulic system problem this plane was cancelled. After waited in a long pile up for negotiating with the counter-staff, I finally got the tickets for myself and my wife Yim Mei KONG firstly to Seattle and then transferred to San Francisco on the plane AS 2014 & AS 791 with Alaska Airlines. I suppose to attend the funeral of our friend in San Francisco on July 18 and a Memorial Gathering for the Birthday of the deceased on July 16, 2026. I arrived San Francisco at 9:40 pm that day (12 hours later) and couldn't joint the Memorial Gathering. This upset me a lot. I am seeking for compensation of this failing trip. Please let me know how to and where to forward my complaint.

Seriously need to improve the time schedule and the plans

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

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