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

There are many flights that can get you from St. Louis to Quebec in 2h 31m. Fly via Air Canada or United Airlines to get the fastest option. Airlines will cover a distance of 1556 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

In terms of precipitation, rainfall in Quebec ranges from 64.0 - 111.0 mm per month. August is typically the wettest month, when rainfall can reach 111.0 mm. February is typically the driest time to visit Quebec when rainfall is around 64.0 mm.

If weather is an important factor for your trip to Quebec, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -9.0 C).

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

Looking for the cheapest flight from St. Louis to Quebec? While on average our users pay C$ 872, our data indicates the cheapest price to be C$ 638. The most popular route (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl), is priced around C$ 714.

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 Air Canada (74%), Jazz (74%) or United Airlines (74%) as they are the most reliable in getting you off to your destination on time.

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.

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.

C$ 266+ Cheap Flights from St. Louis to Quebec

Cheap flight deals from St. Louis to Quebec

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 10 September 2026.

Sat 24/107:28 a.m. -

1 stop8h 24m

Sat 31/1012:30 p.m. -

1 stop9h 43m

Deal found 9/9C$ 622

Sat 17/105:23 p.m. -

1 stop17h 21m

Wed 21/105:34 p.m. -

1 stop18h 16m

Deal found 9/9C$ 631

Sat 7/118:15 p.m. -

1 stop14h 10m

Wed 11/1112:10 p.m. -

1 stop12h 49m

Deal found 7/9C$ 670

Sat 3/105:18 p.m. -

1 stop17h 26m

Mon 5/1012:30 p.m. -

1 stop12h 49m

Deal found 9/9C$ 703

Fri 2/107:21 a.m. -

1 stop8h 32m

Tue 6/105:34 p.m. -

1 stop18h 16m

Deal found 8/9C$ 740

Thu 29/105:00 a.m. -

1 stop10h 52m

Mon 2/1112:10 p.m. -

1 stop12h 49m

Deal found 9/9C$ 775

Fri 23/108:55 a.m. -

1 stop6h 02m

Fri 30/1010:40 a.m. -

1 stop5h 43m

Deal found 8/9C$ 786

Thu 8/102:00 p.m. -

3 stops30h 12m

Mon 12/108:35 a.m. -

2 stops6h 25m

Deal found 9/9C$ 796

Sat 17/1012:10 p.m. -

Nonstop2h 31m

Wed 21/104:55 p.m. -

Nonstop2h 46m

Deal found 9/9C$ 811

Thu 8/108:55 a.m. -

1 stop13h 47m

Mon 12/102:50 p.m. -

1 stop4h 51m

Deal found 9/9C$ 812

Fri 2/105:00 a.m. -

1 stop10h 53m

Mon 5/1012:30 p.m. -

1 stop12h 49m

Deal found 9/9C$ 812

Fri 23/106:07 p.m. -

2 stops16h 33m

Fri 30/102:25 p.m. -

1 stop27h 26m

Deal found 8/9C$ 819

Best flights from St. Louis to Quebec
Discover carefully curated flight deals from St. Louis to Quebec that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Thu 15/1012:10 p.m. -

Nonstop2h 31m

Sun 18/109:10 a.m. -

1 stop5h 50m

Deal found 9/9C$ 830

Fri 30/101:08 p.m. -

1 stop20h 09m

Sat 31/101:10 p.m. -

1 stop9h 30m

Deal found 7/9C$ 899

Mon 5/105:30 p.m. -

1 stop14h 02m

Wed 14/109:30 a.m. -

1 stop11h 44m

Deal found 5/9C$ 958

Fri 4/126:00 a.m. -

1 stop15h 47m

Mon 7/125:00 a.m. -

1 stop11h 26m

Deal found 5/9C$ 980

Thu 15/108:00 a.m. -

1 stop8h 30m

Sat 17/108:35 a.m. -

1 stop11h 25m

Deal found 8/9C$ 903

Sat 5/121:15 p.m. -

2 stops8h 31m

Fri 11/125:00 a.m. -

2 stops8h 10m

Deal found 9/9C$ 909

Sat 3/102:00 p.m. -

1 stop17h 35m

Thu 15/107:50 p.m. -

1 stop13h 39m

Deal found 5/9C$ 958

Wed 21/107:30 a.m. -

1 stop14h 11m

Wed 28/106:00 a.m. -

2 stops13h 09m

Deal found 6/9C$ 938

Sat 10/102:00 p.m. -

1 stop17h 31m

Thu 15/107:50 p.m. -

1 stop13h 39m

Deal found 5/9C$ 958

Mon 2/116:00 a.m. -

1 stop7h 45m

Thu 5/113:45 p.m. -

1 stop6h 55m

Deal found 8/9C$ 940

Sun 4/104:59 p.m. -

1 stop5h 51m

Wed 14/109:30 a.m. -

2 stops12h 21m

Deal found 5/9C$ 986

Sat 5/126:33 a.m. -

1 stop7h 12m

Fri 11/123:45 p.m. -

1 stop8h 29m

Deal found 5/9C$ 949

Sat 3/108:00 a.m. -

1 stop8h 30m

Sat 10/1011:23 a.m. -

1 stop11h 14m

Deal found 5/9C$ 973

Tue 29/126:58 p.m. -

2 stops20h 43m

Wed 6/112:45 p.m. -

1 stop10h 08m

Deal found 7/9C$ 990

Wed 11/1110:53 a.m. -

2 stops7h 55m

Tue 17/117:00 a.m. -

2 stops12h 09m

Deal found 5/9C$ 994

Find flight deals from St. Louis to Quebec

Round-trip from	C$ 622
One-way from	C$ 266
Popular in	March
Cheapest in	February
Average price	C$ 900
Good one-way deal	C$ 872 or less

American Airlines
24/10-31/10
2 total stops
18h 07m total
St. Louis to Quebec

Search Deals

19/10-31/12
3 total stops
22h 45m total
St. Louis to Quebec

Search Deals

Highest demand for flights based on searches. 3% potential increase in price (C$ 39 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 36 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a one-way flight from Lambert-St Louis to Quebec.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Thu 1/10

6:39 p.m.-9:12 p.m.

3 stops25h 33m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 324

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Fri 2/10

2:29 p.m.-11:45 p.m.

2 stops32h 16m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 339

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Mon 19/10

5:31 p.m.-8:32 a.m.

1 stop14h 01m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 371

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Thu 1/10

8:55 a.m.-4:21 p.m.

1 stop6h 26m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 387

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Wed 7/10

8:00 a.m.-7:01 p.m.

1 stop10h 01m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 392

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Fri 16/10

5:31 p.m.-8:32 a.m.

1 stop14h 01m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 393

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Wed 7/10

6:00 a.m.-6:58 p.m.

2 stops11h 58m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 409

Quickest round-trip

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Wed 7/10

12:10 p.m.-3:41 p.m.

Nonstop2h 31m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 425

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Fri 25/9

8:55 a.m.-5:54 p.m.

1 stop7h 59m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 425

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Wed 7/10

4:18 p.m.-9:52 a.m.

1 stop16h 34m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 432

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 26 resultsSorted by cheapest first

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.

STL-YUL

STL-YQB

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

STL-CAQC

STL-YUL

STL-YQB

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

Currently, August is the cheapest month in which you can book a flight from St. Louis to Quebec (average of C$ 630). Flying from St. Louis to Quebec in March is currently the most expensive (average of C$ 1,074). 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 STL to QC?

When flying from St. Louis to Quebec, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from St. Louis to Quebec

The most flights from STL to CAQC 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 St. Louis to Quebec?

Airfare is below average for this route at the moment.

St. Louis to Quebec flights typically cost between C$ 1,000 and C$ 1,910 in October.
The cheapest round-trip price found within the last 5 days was C$ 622 on American Airlines (24 Oct-31 Oct).

Related info for your journey

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 2h 31m. Fly via Air Canada or United Airlines to get the fastest option. Airlines will cover a distance of 1556 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 Air Canada (74%), Jazz (74%) or United Airlines (74%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from St. Louis to Quebec?
Looking for the cheapest flight from St. Louis to Quebec? While on average our users pay C$ 872, our data indicates the cheapest price to be C$ 638. The most popular route (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl), is priced around C$ 714.
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, August is the cheapest month in which you can book a flight from St. Louis to Quebec (average of C$ 630). Flying from St. Louis to Quebec in March is currently the most expensive (average of C$ 1,074). 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

Alternative routes

Complete your trip

Direct flights to Canada

Flights by cabin class

Other flight options

Popular flights

Alternative routes for St. Louis to Quebec

Fly with Cheapflights

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.

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.

Cheap flights from St. Louis to Quebec from C$ 266

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 19/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from St. Louis to Quebec

Cheapest flights from St. Louis to QuebecExplore 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 10 September 2026.

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 10 September 2026.

Best flights from St. Louis to QuebecDiscover carefully curated flight deals from St. Louis to Quebec that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Discover carefully curated flight deals from St. Louis to Quebec that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Direct flights from St. Louis to QuebecExplore direct flight options from St. Louis to Quebec based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 September 2026.

Explore direct flight options from St. Louis to Quebec based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 September 2026.

Last-minute flights from St. Louis to QuebecDiscover last-minute flight deals from St. Louis to Quebec. Data last updated 10 September 2026 and is based on user searches.

Discover last-minute flight deals from St. Louis to Quebec. Data last updated 10 September 2026 and is based on user searches.

One-way flights from St. Louis to QuebecSearch for one-way flight options from St. Louis to Quebec. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Search for one-way flight options from St. Louis to Quebec. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

Find flight deals from St. Louis to Quebec

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Quebec that are best for you.

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.

Cheapflights Insights

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

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

Find hourly flight availability from St. Louis to Quebec. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 10 September 2026.

When flying from St. Louis to Quebec, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from St. Louis to Quebec

Explore weekly flight availability from St. Louis to Quebec. 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 10 September 2026.

The most flights from STL to CAQC 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 St. Louis to Quebec?

Airfare is below average for this route at the moment.

St. Louis to Quebec flights typically cost between C$ 1,000 and C$ 1,910 in October.The cheapest round-trip price found within the last 5 days was C$ 622 on American Airlines (24 Oct-31 Oct).

Related info for your journey

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

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

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

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

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

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

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

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

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.

Alternative routes for St. Louis to Quebec

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Quebec by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to Canada

Book a non-stop flight to one of these other cities located in Canada.

Search flights from St. Louis to Quebec by cabin class

Find flights from St. Louis to Quebec, based on your preferred cabin class, be it economy, premium economy, business, or first class.

St. Louis and Quebec flights

Browse other St. Louis and Quebec flight options. Last updated on 10 September 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Fly with Cheapflights

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 10 September 2026.

Best flights from St. Louis to Quebec
Discover carefully curated flight deals from St. Louis to Quebec that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 10 September 2026.

Direct flights from St. Louis to Quebec
Explore direct flight options from St. Louis to Quebec based on user searches, and compare prices and availability for your desired travel dates. Data last updated 10 September 2026.

Last-minute flights from St. Louis to Quebec
Discover last-minute flight deals from St. Louis to Quebec. Data last updated 10 September 2026 and is based on user searches.

One-way flights from St. Louis to Quebec
Search for one-way flight options from St. Louis to Quebec. Find affordable one-way fares based on user searches. Data last updated 10 September 2026.

St. Louis to Quebec flights typically cost between C$ 1,000 and C$ 1,910 in October.
The cheapest round-trip price found within the last 5 days was C$ 622 on American Airlines (24 Oct-31 Oct).