Which airlines fly to St. Louis?

Air Canada, WestJet and United Airlines are the top three most popular airlines that fly to St. Louis from Quebec according to our data. Air Canada is the first choice among our users, with 49% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Quebec to Lambert-St Louis?

Air Canada, United Airlines, and American Airlines are the most popular carriers operating from Quebec to Lambert-St Louis

How long does it take to fly to St. Louis?

Flight times vary depending on what airport in Quebec you fly out of and what airport in St. Louis you fly into. For example, flying from Montreal to St. Louis takes 2h 55m on average. On the other hand, flying from Québec City to St. Louis takes 5h 34m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo to see if there are any available for your route.

When did momondo last update prices for flights from Quebec to Lambert-St Louis Airport?

Prices for flights from Quebec to Lambert-St Louis Airport are updated daily.

How many operators does momondo search for flights from Quebec to Lambert-St Louis Airport?

The number of operators available for flights from Quebec to Lambert-St Louis Airport is 3 as of December 2025.

How old do you have to be to fly from Quebec to Lambert-St Louis Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Quebec to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 219 Cheap Flights from Quebec to St. Louis in 2025/26

1 adult

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Find the cheapest flights from Quebec to St. Louis

Round-trip

One-way

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:30 a.m. - 11:33 p.m.

YOW

STL

15h 03m1 stop

12:12 p.m. - 11:58 p.m.

STL

YOW

10h 46m1 stop

C$ 342Multiple Airlines

Thu, 22 Jan - Sat, 24 Jan

9:30 a.m. - 11:33 p.m.

YOW

STL

15h 03m1 stop

12:12 p.m. - 11:58 p.m.

STL

YOW

10h 46m1 stop

C$ 381Multiple Airlines

Thu, 22 Jan - Sat, 24 Jan

6:00 a.m. - 10:41 a.m.

YOW

STL

5h 41m1 stop

7:00 a.m. - 4:30 p.m.

STL

YOW

8h 30m1 stop

C$ 398United Airlines

Thu, 8 Jan - Wed, 14 Jan

2:15 p.m. - 10:58 p.m.

YOW

STL

9h 43m2 stops

11:20 a.m. - 11:54 p.m.

STL

YOW

11h 34m2 stops

C$ 403United Airlines

Thu, 22 Jan - Sat, 24 Jan

2:15 p.m. - 10:58 p.m.

YOW

STL

9h 43m2 stops

9:57 a.m. - 9:56 p.m.

STL

YOW

10h 59m2 stops

C$ 477Air Canada

Thu, 22 Jan - Mon, 26 Jan

2:25 p.m. - 7:30 p.m.

YUL

STL

6h 05m1 stop

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

STL

YUL

8h 10m1 stop

C$ 576American Airlines

Thu, 12 Feb - Tue, 17 Feb

3:55 p.m. - 11:28 p.m.

YUL

STL

8h 33m1 stop

9:59 a.m. - 10:44 p.m.

STL

YUL

11h 45m2 stops

C$ 582American Airlines

Thu, 12 Feb - Tue, 17 Feb

8:50 a.m. - 3:29 p.m.

YUL

STL

7h 39m2 stops

4:05 p.m. - 11:22 p.m.

STL

YUL

6h 17m1 stop

C$ 656Air Canada

Sat, 14 Mar - Mon, 16 Mar

9:34 a.m. - 8:43 p.m.

YUL

STL

12h 09m2 stops

6:10 a.m. - 1:42 p.m.

STL

YUL

6h 32m1 stop

C$ 693Delta

Wed, 28 Jan - Sat, 31 Jan

3:00 p.m. - 11:01 p.m.

YUL

STL

9h 01m1 stop

5:45 p.m. - 11:10 p.m.

STL

YUL

4h 25m1 stop

C$ 729Delta

Sun, 10 May - Sat, 16 May

WestJet flights from Quebec to St. Louis

Our best WestJet deals on Quebec to St. Louis flight tickets

WestJet

10 May

YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl

31h 09m

2 stops

STL12:54 p.m.Lambert-St Louis

16 May

STL5:30 p.m.Lambert-St Louis

30h 10m

2 stops

YUL12:40 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 915

Find similar

WestJet

10 May

YUL6:45 a.m.Montreal Pierre Elliott Trudeau Intl

10h 13m

2 stops

STL3:58 p.m.Lambert-St Louis

16 May

STL5:30 p.m.Lambert-St Louis

36h 27m

2 stops

YUL6:57 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 917

Find similar

WestJet

5 Jan

YUL7:30 p.m.Montreal Pierre Elliott Trudeau Intl

20h 18m

2 stops

STL2:48 p.m.Lambert-St Louis

8 Jan

STL5:25 p.m.Lambert-St Louis

36h 40m

2 stops

YUL7:05 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 1,107

Find similar

Delta flights from Quebec to St. Louis

Our best Delta deals on Quebec to St. Louis flight tickets

Delta

28 Jan

YUL9:34 a.m.Montreal Pierre Elliott Trudeau Intl

12h 09m

2 stops

STL8:43 p.m.Lambert-St Louis

31 Jan

STL6:10 a.m.Lambert-St Louis

6h 32m

1 stop

YUL1:42 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 693

Find similar

Delta

10 May

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

6h 54m

1 stop

STL12:54 p.m.Lambert-St Louis

16 May

STL5:30 p.m.Lambert-St Louis

5h 28m

1 stop

YUL11:58 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 729

Find similar

Delta

10 May

YUL12:45 p.m.Montreal Pierre Elliott Trudeau Intl

6h 17m

1 stop

STL6:02 p.m.Lambert-St Louis

16 May

STL5:45 p.m.Lambert-St Louis

4h 25m

1 stop

YUL11:10 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 730

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 22/1

9:30 a.m.-11:33 p.m.

1 stop15h 03m

Lambert-St Louis

Sat 24/1

12:12 p.m.-11:58 p.m.

1 stop10h 46m

C$ 342

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 22/1

9:30 a.m.-11:33 p.m.

1 stop15h 03m

Lambert-St Louis

Sat 24/1

12:12 p.m.-11:58 p.m.

1 stop10h 46m

C$ 381

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 8/1

6:00 a.m.-10:41 a.m.

1 stop5h 41m

Lambert-St Louis

Wed 14/1

7:00 a.m.-4:30 p.m.

1 stop8h 30m

C$ 398

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 22/1

2:15 p.m.-10:58 p.m.

2 stops9h 43m

Lambert-St Louis

Sat 24/1

11:20 a.m.-11:54 p.m.

2 stops11h 34m

C$ 403

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 22/1

2:15 p.m.-10:58 p.m.

2 stops9h 43m

Lambert-St Louis

Mon 26/1

9:57 a.m.-9:56 p.m.

2 stops10h 59m

C$ 477

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 12/2

2:25 p.m.-7:30 p.m.

1 stop6h 05m

Lambert-St Louis

Tue 17/2

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

1 stop8h 10m

C$ 576

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 12/2

3:55 p.m.-11:28 p.m.

1 stop8h 33m

Lambert-St Louis

Tue 17/2

9:59 a.m.-10:44 p.m.

2 stops11h 45m

C$ 582

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 14/3

8:50 a.m.-3:29 p.m.

2 stops7h 39m

Lambert-St Louis

Mon 16/3

4:05 p.m.-11:22 p.m.

1 stop6h 17m

C$ 656

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 28/1

9:34 a.m.-8:43 p.m.

2 stops12h 09m

Lambert-St Louis

Sat 31/1

6:10 a.m.-1:42 p.m.

1 stop6h 32m

C$ 693

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 10/5

3:00 p.m.-11:01 p.m.

1 stop9h 01m

Lambert-St Louis

Sat 16/5

5:45 p.m.-11:10 p.m.

1 stop4h 25m

C$ 729

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Quebec to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to St. Louis?

The month of July is, on average, the cheapest month to fly to St. Louis from Quebec, with most prices found around C$ 391. If you don’t want to visit St. Louis in July, then you should wait until February to fly from Quebec, when ticket prices are also cheap, with an average price of C$ 622.

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Friday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 612. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 1,107.

What is the cheapest Quebec to Lambert-St Louis flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis for the best Quebec - Lambert-St Louis flight prices

What cabin class options are available on Quebec to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on Quebec to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Quebec to St. Louis flights?

You could potentially save up to 11% on your flight if you consider stops on a Quebec to St. Louis flight.

Cheap Quebec to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Quebec to St. Louis

Fastest flight time	2h 55m
Direct flights	Mon
Airports in St. Louis	1 airport

The fastest flight from Quebec to St. Louis takes 2h 55m

Direct flights go from Quebec to St. Louis on Monday. The only airline offering direct flights is Air Canada.

There is 1 airport in St. Louis. From Quebec there are direct flights to Lambert-St Louis (STL).

Search flight deals

When did momondo last update prices for flights from Quebec to Lambert-St Louis Airport?
Prices for flights from Quebec to Lambert-St Louis Airport are updated daily.
How many operators does momondo search for flights from Quebec to Lambert-St Louis Airport?
The number of operators available for flights from Quebec to Lambert-St Louis Airport is 3 as of December 2025.
How old do you have to be to fly from Quebec to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Quebec to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Quebec to St. Louis?
Based on momondo bookings for flights between Quebec and St. Louis, the leading plane model is Canadair (Bombardier) Regional Jet 900, making up 55.56% of the total bookings. Other popular models include Airbus A220-300 with 44.44%.

Best airlines flying from Quebec to St. Louis

Compare and see reviews for airlines that fly from Quebec to St. Louis with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom C$ 535	Free Cancellation	Rating 7.1 10,562 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 586	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
WestJet	PriceFrom C$ 733	Free Cancellation	Rating 7.2 3,219 reviews	Search WestJet flights

Chesterfield

Litchfield

Why use momondo?

Why should I use momondo to find a flight deal from Quebec to St. Louis?

It is quick and easy to find Quebec to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Quebec to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Quebec on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Quebec to St. Louis?

Once you have performed a search for Quebec to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Quebec to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Quebec. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Cheap flights from Quebec to St. Louis from C$ 219

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Quebec to St. Louis departing on 9/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Trusted and free

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Find the cheapest flights from Quebec to St. Louis

Cheap round-trip flights

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Cheap direct flights

WestJet flights from Quebec to St. Louis

Our best WestJet deals on Quebec to St. Louis flight tickets

Delta flights from Quebec to St. Louis

Our best Delta deals on Quebec to St. Louis flight tickets

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

See travel insights to St. Louis from

How to get the cheapest flight ticket from Quebec to St. Louis

What is the cheapest month to fly to St. Louis?

The month of July is, on average, the cheapest month to fly to St. Louis from Quebec, with most prices found around C$ 391. If you don’t want to visit St. Louis in July, then you should wait until February to fly from Quebec, when ticket prices are also cheap, with an average price of C$ 622.

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Friday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 612. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 1,107.

What is the cheapest Quebec to Lambert-St Louis flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Lambert-St Louis for the best Quebec - Lambert-St Louis flight prices

What cabin class options are available on Quebec to Lambert-St Louis flights?

There is only 1 cabin class available to choose from on Quebec to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Quebec to St. Louis flights?

You could potentially save up to 11% on your flight if you consider stops on a Quebec to St. Louis flight.

What is the cheapest airline that flies from Quebec to Lambert-St Louis?

Air Canada, United Airlines, and American Airlines are the most popular carriers operating from Quebec to Lambert-St Louis

Which airlines fly to St. Louis?

How long does it take to fly to St. Louis?

Cheap Quebec to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Quebec to St. Louis

Fastest flight time

Direct flights

Airports in St. Louis

When did momondo last update prices for flights from Quebec to Lambert-St Louis Airport?

How many operators does momondo search for flights from Quebec to Lambert-St Louis Airport?

How old do you have to be to fly from Quebec to Lambert-St Louis Airport?

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular plane model from Quebec to St. Louis?

Best airlines flying from Quebec to St. Louis

Compare and see reviews for airlines that fly from Quebec to St. Louis with momondo

Travelling to a place near St. Louis?

Why use momondo?

Why should I use momondo to find a flight deal from Quebec to St. Louis?

Can I find flights from Quebec to St. Louis with flexible booking policies on momondo?

How can momondo help me find flights from Quebec to St. Louis?

I’m not ready to book a flight from Quebec to St. Louis right now. Can momondo alert me if prices change?

An easier way to manage your St. Louis trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Missouri