Find flights
Deals
When to book
FAQs

Cheap flights from Quebec to St. Louis from C$ 248

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 14/7. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
4 Jul — 11 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Quebec to St. Louis

Enter your travel dates to find the best prices.

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 4 June 2026.

Thu 25/67:00 a.m.
YOW
-
STL
1 stop6h 21m
Air Canada
Sun 28/62:15 p.m.
STL
-
YOW
1 stop6h 05m
Air Canada
Deal found 30/5C$ 437
Sat 20/67:00 a.m.
YOW
-
STL
1 stop6h 21m
Air Canada
Mon 22/61:20 p.m.
STL
-
YOW
1 stop6h 51m
Air Canada
Deal found 1/6C$ 455
Thu 9/73:10 p.m.
YOW
-
STL
1 stop9h 34m
United Airlines
Mon 13/79:20 a.m.
STL
-
YOW
1 stop11h 15m
United Airlines
Deal found 1/6C$ 456
Tue 1/96:25 a.m.
YOW
-
STL
1 stop6h 37m
United Airlines
Wed 2/97:00 a.m.
STL
-
YOW
1 stop8h 38m
United Airlines
Deal found 1/6C$ 459
Thu 18/66:30 p.m.
YUL
-
STL
Nonstop2h 55m
Air Canada
Sat 4/712:10 p.m.
STL
-
YUL
Nonstop2h 32m
Air Canada
Deal found 1/6C$ 539
Sun 14/68:10 a.m.
YUL
-
STL
1 stop4h 56m
Air Canada
Wed 17/61:05 p.m.
STL
-
YUL
Nonstop2h 35m
Air Canada
Deal found 30/5C$ 542
Tue 1/94:00 p.m.
YOW
-
STL
1 stop5h 07m
Air Canada
Wed 2/98:55 a.m.
STL
-
YOW
1 stop5h 15m
Air Canada
Deal found 3/6C$ 544
Thu 15/104:55 p.m.
YUL
-
STL
Nonstop2h 46m
Air Canada
Mon 19/1012:10 p.m.
STL
-
YUL
Nonstop2h 31m
Air Canada
Deal found 30/5C$ 548
Sat 11/76:00 a.m.
YOW
-
STL
1 stop5h 27m
United Airlines
Fri 17/77:05 p.m.
STL
-
YOW
2 stops13h 06m
United Airlines
Deal found 3/6C$ 552
Thu 9/76:25 a.m.
YOW
-
STL
1 stop6h 46m
United Airlines
Sun 12/76:00 a.m.
STL
-
YOW
2 stops8h 10m
United Airlines
Deal found 1/6C$ 555
Thu 25/65:10 a.m.
YOW
-
STL
2 stops8h 01m
United Airlines
Sat 4/76:01 a.m.
STL
-
YOW
1 stop9h 37m
United Airlines
Deal found 30/5C$ 556
Wed 12/88:10 a.m.
YUL
-
STL
1 stop6h 52m
Air Canada
Tue 18/812:10 p.m.
STL
-
YUL
Nonstop2h 32m
Air Canada
Deal found 30/5C$ 560

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 4 June 2026.

Round-trip from

C$ 437

One-way from

C$ 248

Popular in

September

Cheapest in

February

Average price

C$ 826

Good round-trip deal

C$ 607 or less
Air Canada
  • Air Canada
  • 25/6-4/7
  • 2 total stops
  • 11h 36m total
  • Quebec to St. Louis
Search Deals
Air Canada
  • Air Canada
  • 14/7
  • 1 total stop
  • 5h 07m total
  • Quebec to St. Louis
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (C$ 199 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 48 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Quebec to Lambert-St Louis.
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 629,999 searches. Data last updated 4 June 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 20/6

7:00 a.m.-12:21 p.m.

1 stop6h 21m

Lambert-St Louis

Mon 22/6

1:20 p.m.-9:11 p.m.

1 stop6h 51m

C$ 455

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 9/7

5:50 p.m.-11:44 p.m.

1 stop6h 54m

Lambert-St Louis

Tue 14/7

6:01 a.m.-10:05 p.m.

1 stop15h 04m

C$ 456

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 9/7

3:10 p.m.-11:44 p.m.

1 stop9h 34m

Lambert-St Louis

Sun 12/7

6:01 a.m.-10:05 p.m.

1 stop15h 04m

C$ 456

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 1/9

6:00 a.m.-3:38 p.m.

3 stops10h 38m

Lambert-St Louis

Wed 2/9

7:00 a.m.-4:38 p.m.

1 stop8h 38m

C$ 460

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 1/9

4:00 p.m.-8:07 p.m.

1 stop5h 07m

Lambert-St Louis

Wed 2/9

8:55 a.m.-3:10 p.m.

1 stop5h 15m

C$ 544

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 11/7

6:25 a.m.-12:11 p.m.

1 stop6h 46m

Lambert-St Louis

Fri 17/7

6:01 a.m.-10:05 p.m.

1 stop15h 04m

C$ 552

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 10/7

3:10 p.m.-11:44 p.m.

1 stop9h 34m

Lambert-St Louis

Tue 14/7

6:00 a.m.-3:10 p.m.

2 stops8h 10m

C$ 555
Quickest round-trip

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 12/8

9:10 a.m.-2:02 p.m.

1 stop5h 52m

Lambert-St Louis

Tue 18/8

12:10 p.m.-3:42 p.m.

Nonstop2h 32m

C$ 613

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 17/6

9:45 a.m.-2:23 p.m.

1 stop5h 38m

Lambert-St Louis

Sat 20/6

1:13 p.m.-9:26 p.m.

1 stop7h 13m

C$ 628

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 15/6

6:50 p.m.-11:56 p.m.

1 stop6h 06m

Lambert-St Louis

Wed 17/6

1:39 p.m.-11:55 p.m.

1 stop9h 16m

C$ 630

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/5

Showing 1-10 of 36 resultsSorted by cheapest first
1
2
3
4

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 C$ 344). Flying from Quebec to St. Louis in January is currently the most expensive (average of C$ 869). 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 4 June 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 4 June 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?

    Located just 20.4 km from the city centre, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Quebec.

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

    Airlines like Air Canada, United Airlines, and Delta fly from Quebec to St. Louis in about 6h 06m. The time it takes to get you to your destination can typically vary by up to 48m. Quebec and St. Louis are separated by a distance of 1556 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Quebec to St. Louis?

    Most travellers choose Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis, Ottawa - Lambert-St Louis or Québec City - Lambert-St Louis when deciding on the best route from Quebec to St. Louis.

  • What are the cheapest flights from Quebec to St. Louis?

    On average you can expect to pay C$ 719 for a flight from Quebec to St. Louis. The cheapest flight overall is C$ 597 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis) is currently priced at C$ 613.

  • 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 C$ 344). Flying from Quebec to St. Louis in January is currently the most expensive (average of C$ 869). 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

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Chesterfield

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 629,999 searches. Data last updated 4 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 560AverageC$ 821FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Quebec to St. Louis?

Cheapflights makes it easy to find Quebec to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Quebec to St. Louis?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Quebec to St. Louis for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Quebec to St. Louis with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Quebec to St. Louis flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Quebec to St. Louis become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to St. Louis from Quebec today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.