$143 Find Cheap Flights from St. Louis to Quebec

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 Quebec departing on 11/15. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Quebec

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Quebec, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Quebec, as well as popular online travel agencies
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Cheap Flights from St. Louis to Quebec

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Québec City
Québec City1 stop$551
Québec City
Québec City1 stop$551

Book Cheap St. Louis to Quebec 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 Quebec 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 Quebec

Wed, Sep 10 - Mon, Sep 15
American Airlines Logo
6:10 am - 4:33 pmSTL-YUL
9h 23m1 stop
American Airlines Logo
5:15 pm - 9:26 amYUL-STL
17h 11m1 stop
$348American Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 20
American Airlines Logo
5:25 pm - 4:33 pmSTL-YUL
22h 08m1 stop
American Airlines Logo
10:34 am - 9:53 pmYUL-STL
12h 19m2 stops
$358American Airlines
Find Deal
Thu, Nov 6 - Sun, Nov 9
 Logo
12:20 pm - 12:45 amSTL-YUL
11h 25m1 stop
 Logo
6:45 am - 12:00 pmYUL-STL
30h 15m3 stops
Wed, Sep 10 - Wed, Sep 17
Air Canada Logo
1:30 pm - 5:00 pmSTL-YUL
2h 30mnonstop
Air Canada Logo
9:15 am - 3:18 pmYUL-STL
7h 03m1 stop
$520Air Canada
Find Deal
Wed, Sep 10 - Wed, Sep 17
Delta Logo
10:45 am - 9:47 pmSTL-YUL
10h 02m2 stops
Delta Logo
11:00 am - 8:05 pmYUL-STL
10h 05m1 stop
$527Delta
Find Deal
Thu, Nov 6 - Mon, Nov 10
Air Canada Logo
4:05 pm - 9:52 pmSTL-YUL
4h 47m1 stop
Air Canada Logo
11:10 am - 3:29 pmYUL-STL
5h 19m1 stop
$532Air Canada
Find Deal
Thu, Nov 6 - Sun, Nov 9
 Logo
12:20 pm - 10:45 amSTL-YUL
21h 25m3 stops
 Logo
6:45 am - 12:00 pmYUL-STL
30h 15m3 stops
Tue, Oct 14 - Sun, Oct 19
United Airlines Logo
3:23 pm - 11:54 amSTL-YUL
19h 31m1 stop
United Airlines Logo
6:40 pm - 10:49 amYUL-STL
17h 09m1 stop
$546United Airlines
Find Deal
Mon, Sep 1 - Fri, Sep 5
United Airlines Logo
3:20 pm - 5:26 pmSTL-YUL
25h 06m1 stop
United Airlines Logo
8:00 pm - 3:44 pmYUL-STL
20h 44m2 stops
$556United Airlines
Find Deal
Wed, Sep 10 - Wed, Sep 17
Delta Logo
10:45 am - 9:47 pmSTL-YUL
10h 02m2 stops
Delta Logo
11:00 am - 8:34 pmYUL-STL
10h 34m2 stops
$581Delta
Find Deal
Booking Insights

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

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

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

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from St. Louis to Quebec.

The cheapest ticket to Quebec from St. Louis found in the last 72 hours was to Montreal, at $412 round-trip. The most popular route is from St. Louis (STL) to Montreal Pierre Elliott Trudeau Intl Airport (YUL), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $412.

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

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $918 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Quebec, 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 Quebec is June, when tickets cost $319 (return) on average. On the other hand, the most expensive months are February and December, when the average cost of round-trip tickets is $752 and $699 respectively.

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

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

If your flying dates are flexible, you should consider flying to Quebec on a Tuesday, as we generally find the cheapest rates on that day for this route. On the other hand, Friday is the most expensive day to fly from St. Louis to Quebec. For your return ticket, we recommend flying on a Friday and avoiding Thursdays for the best deals.


Good to know

Low seasonJanuary
Cheapest flight$143
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 20% increase in price.
Flight from St. Louis to Montreal

FAQs - booking Quebec flights

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

    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 Quebec.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Quebec 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 Quebec?

    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 Quebec 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 Quebec?

    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 Quebec 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 Quebec?

    The cheapest time of day to fly to Quebec is generally at night, when round-trip flights cost $266 on average. Morning departures are around 64% more expensive than evening flights, on average. The most expensive time of day to fly to Quebec is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,133.

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

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Quebec. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Quebec? 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.
8.0
DeltaOverall score based on 7980 reviews
7.3Food
8.5Crew
8.2Boarding
7.9Entertainment
7.9Comfort
Airline reviews

Delayed and took off even later than the scheduled delay time

8.0 ExcellentAnonymous, Jul 2025DTW - SEA
Read more Delta reviews

Delayed and took off even later than the scheduled delay time

For a 69 year old with health problems I had the worse experience, no wheelchair when I entered a lady told me to sit and wait while a gentleman told me I had to walk to the Delta station, which I did. I had a carry on and a bag, and I was traveling with my service dog, which was on his carrier and the lady charged me for my carry on luggage, beside all the waiting cause of the delay, I had to walk to get my luggage cause no wheelchair showed up, I am so disappointed. I will get in touch with the company. I got home at 3:00 am, not good for my health situation.

Only issue was with seating. The economy fare we purchased did say there was no guarantee the three people in our party would be seated together, and we were not. At the gate, the agent told us more specifically, the fare we purchased meant we would be seated in middle seats only. This should just be made more obvious.

Great experience on Delta. Staff from baggage check to flight attendants were very courteous and professional. My only issue was a personal preference for pretzels instead of the chips and cookies that were offered.

There was no problems, just a little uncomfortable with seats that do not lay back a little

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Delay and keep changing gates. I have to run around from B to C then to E.

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

My suitcase was completed destroyed. The top part is broken and unusable now.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

I do prefer to fly United and have always had excellent service, except for bad weather. Flights are on time and staff is alway curtious and helpful

Very poor delay in dfw was really bad n long

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

It was very difficult to stretch my knee out and I am very short. I also had a torn tendon in my knee which made it extra uncomfortable anyways. My husband is 6'2" and I can't imagine him flying in that plane.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

Couldn’t get the door on the plane to close leading to a nearly 2 hour delay. But, hey at least they didn’t cancel the flight.

Flight was cancelled 3 hrs AFTER etd. Thetefore Missed connection from JFK to New Zealand . No accommodation provided… This cost ne aporox 1000 USD in extra expenses and turned whst should have been a 24 hr trip ftom Boston - New Zealand into a VERY expensive , late 70+ hr nightmare … Complete nonsense!!!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

The plane was broken so we had to change planes.

The flight got delayed 2.5 hrs due to a maintenance issue that cause a domino effect. American should have spare planes for when something like this happens.

I had a good experience. I liked being informed about the status of my luggage

I am very tall. All airline seats are a bit uncomfortable.

Terrible confusion btw air Canada and United. Wasn’t able to change ticket because I had purchased on kayak. Rethinking booking tickets on this site, and will try to avoid United and aircanada going forward.

The plane is too cramped! Zero leg room and when the person in front of me put their seat back they were basically laying in my lap.

They canceled my flight and then refused to reschedule me on another flight. I had to take a train. No compensation. I won't use Air Canada again.

Great overall. Quick boarding, attentive staff - great experience in premium class.

1. Nowhere to sit at the gate D4 2. No control of lining up in different zones 3. People pushing in during the line up of zones. 4. Certainly not in a dignified manner.

Air Canada was great! From the airport at Montreal to boarding to the food on board the plane. The crew was great too! There was a slight issue with some other peoples’ tickets that I overheard about but the crew handled with care immediately to ensure everyone was comfortable and we could takeoff! Great experience with Air Canada

The plane was dirty. It appeared that Air Canada did not know vacuum cleaners had been invented. Second, the overhead bins were about 1/3 or 1/2 the size of "normal" bins. That was a problem. The worst was disembarking in the weather in Montreal. I have cold agglutinin disease. That means my red blood cells clump together and then are destroyed when exposed, even by breathing to cold air. A few seconds of exposure can be dangerous. I am now experiencing extreme fatigue caused by the anemia from that experience. I should have had more assistance descending a narrow ramp and then traversing, even if only a few feet, of icy pavement. The blowing snow penetrated my facial covering and has caused problems.

Boarding could be improved, no need to wait after a previous group is completed

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

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