$237 Cheap Flights from Québec (YQB) to St. Louis (STL)

View $237 flight on Wed, Dec 3, 2025Opens in a new window

Popular airlines from Quebec City Jean Lesage Intl. Airport (YQB) to St. Louis Lambert Intl. Airport (STL)

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

Prices were available within the past 7 days and start at $237 for one-way flights and $519 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Dec 16 - Wed, Dec 31
YQB
Québec City
STL
St. Louis
$519 Roundtrip, found 1 day ago
$519
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 16 from Québec City to St. Louis, returning Wed, Dec 31, priced at $519 found 1 day ago
United
Tue, Dec 16 - Tue, Dec 30
YQB
Québec City
STL
St. Louis
$521 Roundtrip, found 1 day ago
$521
Roundtrip
found 1 day ago
Select United flight, departing Tue, Dec 16 from Québec City to St. Louis, returning Tue, Dec 30, priced at $521 found 1 day ago
Air Canada
Sat, Jun 6 - Sat, Jun 13
YQB
Québec City
STL
St. Louis
$527 Roundtrip, found 1 day ago
$527
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Jun 6 from Québec City to St. Louis, returning Sat, Jun 13, priced at $527 found 1 day ago
Air Canada
Wed, Dec 17 - Wed, Dec 31
YQB
Québec City
STL
St. Louis
$532 Roundtrip, found 1 day ago
$532
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Dec 17 from Québec City to St. Louis, returning Wed, Dec 31, priced at $532 found 1 day ago
Air Canada
Sat, Jun 6 - Sat, Jun 13
YQB
Québec City
STL
St. Louis
$533 Roundtrip, found 1 day ago
$533
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Jun 6 from Québec City to St. Louis, returning Sat, Jun 13, priced at $533 found 1 day ago
Air Canada
Wed, Dec 17 - Tue, Dec 30
YQB
Québec City
STL
St. Louis
$534 Roundtrip, found 1 day ago
$534
Roundtrip
found 1 day ago
Select Air Canada flight, departing Wed, Dec 17 from Québec City to St. Louis, returning Tue, Dec 30, priced at $534 found 1 day ago
American Airlines
Sat, Jun 6 - Sat, Jun 13
YQB
Québec City
STL
St. Louis
$536 Roundtrip, found 1 day ago
$536
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Jun 6 from Québec City to St. Louis, returning Sat, Jun 13, priced at $536 found 1 day ago
Air Canada
Fri, Dec 19 - Wed, Dec 31
YQB
Québec City
STL
St. Louis
$537 Roundtrip, found 1 day ago
$537
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Dec 19 from Québec City to St. Louis, returning Wed, Dec 31, priced at $537 found 1 day ago
Air Canada
Fri, Dec 19 - Tue, Dec 30
YQB
Québec City
STL
St. Louis
$539 Roundtrip, found 1 day ago
$539
Roundtrip
found 1 day ago
Select Air Canada flight, departing Fri, Dec 19 from Québec City to St. Louis, returning Tue, Dec 30, priced at $539 found 1 day ago
Air Canada
Sat, Jun 6 - Sat, Jun 13
YQB
Québec City
STL
St. Louis
$551 Roundtrip, found 1 day ago
$551
Roundtrip
found 1 day ago
Select Air Canada flight, departing Sat, Jun 6 from Québec City to St. Louis, returning Sat, Jun 13, priced at $551 found 1 day ago
Flights from Québec (YQB) to St. Louis (STL)
Origin airport
Jean Lesage Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Air Canada, United
Roundtrip price
$519
Distance
1107 mi

Québec to St. Louis Flights

The cheapest times to fly from Québec to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Québec to St. Louis are during the month of December. You can find some of the cheapest flights from Québec to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Québec to St. Louis

Sunday is one of the best days to book for cheap flights from Québec to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Québec to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Québec to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $237 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Québec to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Québec to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL) cost?
Snag a cheap one-way flight from $237 or cheap return flight from $519 from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL)?
December is the least expensive month to fly from YQB to STL. Planning your trip for the off-season is often the key to better flight prices.
What is the cheapest airline that flies from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from YQB to STL, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL)?
There aren't any daily nonstop flights available from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from YQB to STL?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL)?
Book a flight from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL) that leaves before 3 PM to reduce the risk of cancellations. Departures after this hour have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your flight from YQB to STL just before your journey is typically more expensive. However, if there's some wiggle room with your departure dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a YQB to STL flight and hotel package?
Compared with arranging hotels and flights separately, booking a YQB to STL flight and hotel package with Expedia could result in significant savings. Better yet, having it all in one place takes the hassle out of travel planning. Simply pick your flights and choose from our extensive range of hotels, then customize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Jean Lesage Intl. Airport (YQB) to Lambert-St. Louis Intl. Airport (STL)?
Typically, it's possible to reschedule or cancel your YQB to STL flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.