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Cheap flights from St. Louis to Quebec from C$ 258

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 17/12. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YUL
4 Dec — 11 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from St. Louis to Quebec

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis to Quebec
Explore the most affordable flight options available from St. Louis to Quebec. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 November 2025.

Sat 6/123:30 p.m.STL - YUL
1 stop8h 00mMultiple Airlines
Mon 8/128:00 a.m.YUL - STL
2 stops15h 33mMultiple Airlines
Deal found 2/11C$ 533
Thu 4/122:47 p.m.STL - YUL
1 stop24h 36mMultiple Airlines
Mon 8/128:00 a.m.YUL - STL
2 stops15h 33mMultiple Airlines
Deal found 4/11C$ 535
Sat 13/123:30 p.m.STL - YUL
1 stop8h 00mMultiple Airlines
Mon 15/128:00 a.m.YUL - STL
2 stops15h 33mMultiple Airlines
Deal found 2/11C$ 539
Wed 10/123:30 p.m.STL - YUL
2 stops24h 25mMultiple Airlines
Sun 14/124:35 p.m.YUL - STL
1 stop17h 24mMultiple Airlines
Deal found 2/11C$ 611
Mon 1/124:13 p.m.STL - YUL
2 stops31h 30mMultiple Airlines
Sun 7/124:35 p.m.YUL - STL
1 stop17h 24mMultiple Airlines
Deal found 1/11C$ 630
Wed 3/123:30 p.m.STL - YUL
2 stops29h 55mMultiple Airlines
Wed 10/126:30 p.m.YUL - STL
1 stop17h 37mMultiple Airlines
Deal found 3/11C$ 734
Thu 27/1110:53 a.m.STL - YUL
2 stops29h 02mMultiple Airlines
Sun 30/114:35 p.m.YUL - STL
1 stop8h 22mMultiple Airlines
Deal found 2/11C$ 740
Mon 8/123:30 p.m.STL - YQB
2 stops22h 50mMultiple Airlines
Fri 12/126:30 a.m.YQB - STL
1 stop17h 03mMultiple Airlines
Deal found 3/11C$ 741
Sun 7/1210:42 a.m.STL - YQB
2 stops27h 38mMultiple Airlines
Fri 12/126:30 a.m.YQB - STL
1 stop17h 03mMultiple Airlines
Deal found 3/11C$ 745
Wed 3/125:05 a.m.STL - YUL
1 stop9h 05mAmerican Airlines
Wed 10/123:50 p.m.YUL - STL
1 stop17h 18mAmerican Airlines
Deal found 3/11C$ 750
Sat 6/121:15 p.m.STL - YUL
1 stop18h 30mDelta
Mon 8/127:45 p.m.YUL - STL
1 stop25h 32mDelta
Deal found 2/11C$ 776
Sat 6/123:30 p.m.STL - YQB
2 stops22h 50mMultiple Airlines
Fri 12/126:30 a.m.YQB - STL
1 stop17h 03mMultiple Airlines
Deal found 3/11C$ 779

Cheap flight deals from St. Louis to Quebec

Keep the following information in mind while searching for St. Louis to Quebec flight deals. Data was last updated 4 November 2025.

Round-trip from

C$ 510

One-way from

C$ 258

Popular in

October

Cheapest in

June

Average price

C$ 943
American Airlines
  • American Airlines
  • 5/1-10/1
  • 3 total stops
  • 29h 50m total
  • St. Louis to Quebec
Search Deals
17/12
  • 17/12
  • 2 total stops
  • 27h 47m total
  • St. Louis to Quebec
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 188 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Quebec 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 November 2025.
Use the filters below to find and compare flights from St. Louis to Quebec that are best for you.

Fly from

St. Louis

Fly to

Quebec

Route

Depart

Return

Price

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 5/1

8:01 p.m.-3:08 p.m.

1 stop18h 07m

Montreal Pierre Elliott Trudeau Intl

Sat 10/1

7:30 a.m.-6:13 p.m.

2 stops11h 43m

C$ 510

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 4/12

2:47 p.m.-4:23 p.m.

1 stop24h 36m

Montreal Pierre Elliott Trudeau Intl

Mon 8/12

8:00 a.m.-10:33 p.m.

2 stops15h 33m

C$ 535

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 17/2

2:19 p.m.-3:05 p.m.

1 stop23h 46m

Montreal Pierre Elliott Trudeau Intl

Thu 19/2

3:55 p.m.-1:49 p.m.

1 stop22h 54m

C$ 581

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 1/12

4:13 p.m.-12:43 a.m.

2 stops31h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 7/12

4:35 p.m.-8:59 a.m.

1 stop17h 24m

C$ 630

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 9/2

9:57 a.m.-10:47 p.m.

2 stops11h 50m

Québec City

Thu 12/2

10:55 a.m.-9:00 p.m.

2 stops11h 05m

C$ 730

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 19/2

6:00 a.m.-3:05 p.m.

1 stop8h 05m

Montreal Pierre Elliott Trudeau Intl

Sun 22/2

7:30 a.m.-6:03 p.m.

2 stops11h 33m

C$ 738

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 8/12

3:30 p.m.-3:20 p.m.

2 stops22h 50m

Québec City

Fri 12/12

6:30 a.m.-10:33 p.m.

1 stop17h 03m

C$ 741

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 10/12

6:00 a.m.-12:40 a.m.

1 stop17h 40m

Montreal Pierre Elliott Trudeau Intl

Sun 14/12

4:35 p.m.-8:59 a.m.

1 stop17h 24m

C$ 810

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 27/11

10:53 a.m.-3:10 p.m.

1 stop27h 17m

Montreal Pierre Elliott Trudeau Intl

Mon 1/12

8:00 a.m.-11:57 p.m.

2 stops16h 57m

C$ 813

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 13/12

3:30 p.m.-12:30 a.m.

1 stop8h 00m

Montreal Pierre Elliott Trudeau Intl

Mon 15/12

12:50 p.m.-5:10 p.m.

1 stop5h 20m

C$ 813

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 22 results
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Best time to book a flight from St. Louis to Quebec

Have a flexible travel schedule? Discover the best time to fly to Quebec from St. Louis 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 St. Louis to Quebec

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

Currently, January is the cheapest month in which you can book a flight from St. Louis to Quebec (average of C$ 248). Flying from St. Louis to Quebec in November is currently the most expensive (average of C$ 618). 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.

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

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Quebec. 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 from for flights from St. Louis to Quebec?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Quebec. It is only a 20.4 km journey to Lambert-St Louis (STL) from St. Louis’s city centre.

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

    There are many flights that can get you from St. Louis to Quebec in 11h 50m. Fly via American Airlines or United Airlines to get the fastest option. Airlines will cover a distance of 1782 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most reliable airlines from St. Louis to Quebec?

    No one likes to see their flight delayed. When booking a flight from St. Louis to Quebec consider choosing Sun Country Air (100%), Air Canada (82%) or Jazz (82%) as they are the most reliable in getting you off to your destination on time.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to Quebec 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 St. Louis to Quebec?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Quebec (average of C$ 248). Flying from St. Louis to Quebec in November is currently the most expensive (average of C$ 618). 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

Browse thousands of different options on Cheapflights for your next trip

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Fly with Cheapflights

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

Cheapflights helps you search for flights from St. Louis to Quebec via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Quebec.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to Quebec, users can toggle the no change fees filter when performing a flight search.

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

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

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