STL - YQB

$348 Find Cheap Flights from St. Louis to Québec City - 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 from St. Louis to Québec City departing on 9/11. 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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Everything you should know

Cheapest round-trip
$574
American Airlines
Tue 9/22Fri 9/25
STL - YQB • 1 stop
Cheapest one-way
$348
United Airlines
Fri 9/11
STL - YQB • 2 stops
Top airlines
Cheapest • from $574 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Québec City. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $686 (round-trip)
Shortest trip • 5h 01m (one-way)
Insights
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We hope you love your trip to Québec City!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Québec City (STL-YQB)

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

Tue, Sep 22 - Fri, Sep 25
American Airlines Logo
11:01 am - 1:53 pm
STL
-
YQB
25h 52m
1 stop
American Airlines Logo
2:27 pm - 10:20 am
YQB
-
STL
20h 53m
1 stop
$574American Airlines
Tue, Sep 22 - Fri, Sep 25
American Airlines Logo
11:01 am - 1:53 pm
STL
-
YQB
25h 52m
1 stop
American Airlines Logo
3:59 pm - 10:20 am
YQB
-
STL
19h 21m
2 stops
$583American Airlines
Mon, Nov 23 - Fri, Dec 4
American Airlines Logo
1:20 pm - 12:52 pm
STL
-
YQB
22h 32m
2 stops
American Airlines Logo
2:00 pm - 10:51 am
YQB
-
STL
21h 51m
2 stops
$589American Airlines
Fri, Oct 30 - Mon, Nov 2
American Airlines Logo
11:31 am - 1:44 pm
STL
-
YQB
25h 13m
1 stop
American Airlines Logo
2:00 pm - 10:52 am
YQB
-
STL
21h 52m
2 stops
$610American Airlines
Mon, Sep 7 - Mon, Sep 14
Air Canada Logo
2:40 pm - 10:46 pm
STL
-
YQB
7h 06m
2 stops
Air Canada Logo
8:25 pm - 2:00 pm
YQB
-
STL
18h 35m
2 stops
$654Air Canada
Mon, Sep 7 - Mon, Sep 14
Air Canada Logo
8:55 am - 4:01 pm
STL
-
YQB
6h 06m
1 stop
Air Canada Logo
8:25 pm - 2:00 pm
YQB
-
STL
18h 35m
2 stops
$661Air Canada
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
8:00 am - 2:08 pm
STL
-
YQB
5h 08m
1 stop
United Airlines Logo
4:55 pm - 11:38 pm
YQB
-
STL
7h 43m
1 stop
$711United Airlines
Sat, Aug 29 - Tue, Sep 1
Air Canada Logo
8:55 am - 5:01 pm
STL
-
YQB
7h 06m
1 stop
Air Canada Logo
2:45 pm - 6:42 pm
YQB
-
STL
4h 57m
1 stop
$719Air Canada
Fri, Oct 2 - Tue, Oct 6
United Airlines Logo
5:36 pm - 3:08 pm
STL
-
YQB
20h 32m
2 stops
United Airlines Logo
3:53 pm - 9:09 pm
YQB
-
STL
6h 16m
1 stop
$732United Airlines
Wed, Sep 9 - Wed, Sep 16
United Airlines Logo
6:00 am - 3:08 pm
STL
-
YQB
8h 08m
2 stops
United Airlines Logo
4:55 pm - 11:38 pm
YQB
-
STL
7h 43m
1 stop
$732United Airlines
Booking Insights

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

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

Which airlines provide the cheapest flights from St. Louis to Québec City?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from St. Louis to Québec City were found on American Airlines ($574) and Air Canada ($654).

Good to know

Cheapest flight

$348
Flight from St. Louis to Québec City

When to book flights from St. Louis to Québec City

Are your dates flexible? Find out the best times to travel from St. Louis to Québec City based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Québec City

  • What is the cheapest flight from St. Louis to Québec City?

    In the last 5 days, the lowest price for a flight from St. Louis to Québec City was $348 for a one-way ticket and $574 for a round-trip.

  • Do I need a passport to fly between St. Louis and Québec City?

    Yes, you'll most likely have to show a valid passport before boarding the plane in St. Louis and on arrival in Québec City.

  • Which aircraft models fly most regularly from St. Louis to Québec City?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Québec City?

    Star Alliance is the only airline alliance operating flights between St. Louis and Québec City.

  • Which is the best airline for flights from St. Louis to Québec City, United Airlines or Air Canada?

    The two airlines most popular with KAYAK users for flights from St. Louis to Québec City are United Airlines and Air Canada. With an average price for the route of $829 and an overall rating of 7.4, United Airlines is the most popular choice. Air Canada is also a great choice for the route, with an average price of $846 and an overall rating of 7.1.

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

    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 Québec City.

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

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

    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 Québec City with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and YQB can sometimes prove cheaper using this method.

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

    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 Québec City from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from St. Louis to Québec City

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Québec City. 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 Québec City? 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.
7.4
United AirlinesOverall score based on 10052 reviews
7.3Comfort
7.1Entertainment
8.1Crew
7.7Boarding
6.6Food
Airline reviews

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

6.0 GoodValerie, Jul 2026
STL - IAD
Read more United Airlines reviews

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

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

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.

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.

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.

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

Wow! Both way we came in in advance! Now that's a first with AC!

SIX HOUR FLIGHT DELAY!! $15.00 voucher to apologize. Missed our first tour in Quebec.

The take off was delayed as we were told that the baggages had to be rearranged to balance the weight. I only took a carry-on and a personal item, but the overhead bin was extremely small, even a normal size carryon can’t fit it, so they had to check it in for free. The seat was really tight and no entertainment at all.

It was fine. There were a couple of mechanical delays prior to takeoff but it was overall a quick and pleasant flight.

They booked me to travel to Quebec City from Montreal before going to Ottawa, for some reason, then the flight was late and I missed my connection, so I had to fly right back to Montreal to get a flight to Ottawa…..and my luggage was delayed by two days.

very disappointed with Air Canada, flight delay more than 4 hours.

Flight canceled so had to wait in the airport for a long time.

Flight was delayed at least 4 times then once we boarded they found a problem with the plane and we had to de-plane and wait another hour for a different plane. I was an hour late for my performance.

Flight was cancelled in Antigua and they made me find my own hotel, taxi and pay for all my food. Flight was delayed more than 24 hours due to mechanical and air canada doesn't want to pay the $1000 due for reimbursement

The departure was delayed 50 minutes and you didn't have an explanation from the crew.

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

Information on your arrival and departure airports