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St. Louis

$179+ Cheap flights from Quebec to St. Louis (STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
Jul 4 — Jul 111
Sat 7/4
Sat 7/11
1 adult, Economy
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Cheap flight deals from Quebec to St. Louis

Cheapest flights from Quebec to St. Louis
Explore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 4, 2026.

This Air Canada deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:00 am
YOW
-
STL
1 stop6h 21m
Air Canada
Sun 6/282:15 pm
STL
-
YOW
1 stop6h 05m
Air Canada
Deal found 5/30$315
This Trip.com deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/207:00 am
YOW
-
STL
1 stop6h 21m
Air Canada
Mon 6/221:20 pm
STL
-
YOW
1 stop6h 51m
Air Canada
Deal found 6/1$328
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/93:10 pm
YOW
-
STL
1 stop9h 34m
United Airlines
Mon 7/139:20 am
STL
-
YOW
1 stop11h 15m
United Airlines
Deal found 6/1$329
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:25 am
YOW
-
STL
1 stop6h 37m
United Airlines
Wed 9/27:00 am
STL
-
YOW
1 stop8h 38m
United Airlines
Deal found 6/1$331
This Air Canada deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/186:30 pm
YUL
-
STL
Nonstop2h 55m
Air Canada
Sat 7/412:10 pm
STL
-
YUL
Nonstop2h 32m
Air Canada
Deal found 6/1$389
This Air Canada deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/148:10 am
YUL
-
STL
1 stop4h 56m
Air Canada
Wed 6/171:05 pm
STL
-
YUL
Nonstop2h 35m
Air Canada
Deal found 5/30$391
This Air Canada deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:55 pm
YUL
-
STL
Nonstop2h 46m
Air Canada
Mon 10/1912:10 pm
STL
-
YUL
Nonstop2h 31m
Air Canada
Deal found 5/30$395
This United Airlines deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/116:00 am
YOW
-
STL
1 stop5h 27m
United Airlines
Fri 7/177:05 pm
STL
-
YOW
2 stops13h 06m
United Airlines
Deal found 6/3$398
This United Airlines deal was found by Cheapflights users on 6/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:25 am
YOW
-
STL
1 stop6h 46m
United Airlines
Sun 7/126:00 am
STL
-
YOW
2 stops8h 10m
United Airlines
Deal found 6/1$400
This United Airlines deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/255:10 am
YOW
-
STL
2 stops8h 01m
United Airlines
Sat 7/46:01 am
STL
-
YOW
1 stop9h 37m
United Airlines
Deal found 5/30$401
This Air Canada deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/128:10 am
YUL
-
STL
1 stop6h 52m
Air Canada
Tue 8/1812:10 pm
STL
-
YUL
Nonstop2h 32m
Air Canada
Deal found 5/30$404
This Air Canada deal was found by Cheapflights users on 6/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/28:10 am
YUL
-
STL
1 stop6h 52m
Air Canada
Wed 7/88:55 am
STL
-
YUL
1 stop6h 27m
Air Canada
Deal found 6/2$411

Find flight deals from Quebec to St. Louis

Keep the following information in mind while searching for Quebec to St. Louis flight deals. Data was last updated June 4, 2026.

Round-trip from

$315
(Air Canada)

One-way from

$179
(Air Canada)

Popular in

September

Cheapest in

February

Average price

$596
From Quebec to Lambert-St Louis
Search Deals
One-way flight from Quebec to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($104 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Quebec to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
Use the filters below to find and compare flights from Quebec to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 6/20

7:00 am-12:21 pm

1 stop6h 21m

Lambert-St Louis

Mon 6/22

1:20 pm-9:11 pm

1 stop6h 51m

$328

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 7/9

3:10 pm-11:44 pm

1 stop9h 34m

Lambert-St Louis

Sun 7/12

6:01 am-10:05 pm

1 stop15h 04m

$329

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 7/9

3:10 pm-11:44 pm

1 stop9h 34m

Lambert-St Louis

Mon 7/13

9:20 am-9:35 pm

1 stop11h 15m

$329

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 9/1

5:57 pm-11:38 pm

1 stop6h 41m

Lambert-St Louis

Wed 9/2

7:00 am-4:38 pm

1 stop8h 38m

$332
Quickest round-trip

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/15

4:55 pm-6:41 pm

Nonstop2h 46m

Lambert-St Louis

Mon 10/19

12:10 pm-3:41 pm

Nonstop2h 31m

$395

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 7/11

6:25 am-12:11 pm

1 stop6h 46m

Lambert-St Louis

Fri 7/17

6:01 am-10:05 pm

1 stop15h 04m

$398

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 7/10

3:10 pm-11:44 pm

1 stop9h 34m

Lambert-St Louis

Tue 7/14

6:00 am-3:10 pm

2 stops8h 10m

$400

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 7/2

5:50 pm-11:44 pm

1 stop6h 54m

Lambert-St Louis

Sun 7/5

9:20 am-9:35 pm

1 stop11h 15m

$423

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 7/1

3:10 pm-11:44 pm

1 stop9h 34m

Lambert-St Louis

Sun 7/5

9:20 am-9:35 pm

1 stop11h 15m

$423

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 6/17

9:45 am-2:23 pm

1 stop5h 38m

Lambert-St Louis

Sat 6/20

1:13 pm-9:26 pm

1 stop7h 13m

$453

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/30

Showing 1-10 of 27 resultsSorted by cheapest first
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Best time to book a flight from Quebec to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Quebec with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Quebec to St. Louis?

Currently, June is the cheapest month in which you can book a flight from Quebec to St. Louis (average of $248). Flying from Quebec to St. Louis in January is currently the most expensive (average of $627). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from QC to STL?

Find hourly flight availability from Quebec to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 4, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Quebec to St. Louis as you normally would.

Weekly flight availability from Quebec to St. Louis

Explore weekly flight availability from Quebec to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated June 4, 2026.

The most flights from CAQC to STL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

How much does it cost to fly round-trip from Quebec to St. Louis?

Related info for your journey

Find useful and relevant information for your journey from Quebec to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Quebec?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Quebec to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

  • How long is the flight from Quebec to St. Louis?

    For as low as $454, Air Canada can have you in St. Louis from Quebec in 6h 06m. The distance from Quebec to St. Louis is about 967 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Quebec to St. Louis that include hotel bookings?

    Yes. In addition to deals on Quebec to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Quebec to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Quebec to St. Louis.

  • Can I find deals for business class flights from Quebec to St. Louis?

    Yes. Cheapflights offers flight deals from Quebec to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Quebec to St. Louis?

    Currently, June is the cheapest month in which you can book a flight from Quebec to St. Louis (average of $248). Flying from Quebec to St. Louis in January is currently the most expensive (average of $627). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Quebec to St. Louis

Discover the top airline that operate flights from Quebec to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$470Average$584FlexibilityNo cancel feeOn-time67%

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