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 55% 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.

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 47m 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.

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

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

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 February 2026.

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$ 280 Cheap Flights from Quebec to St. Louis in 2026

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Find the cheapest flights from Quebec to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:30 p.m. - 10:17 p.m.

YUL

STL

10h 47m

1 stop

5:21 p.m. - 11:44 a.m.

STL

YUL

17h 23m

1 stop

C$ 425American Airlines

Mon, 20 Apr - Sat, 25 Apr

10:44 a.m. - 9:08 p.m.

YOW

STL

11h 24m

1 stop

7:45 a.m. - 5:07 p.m.

STL

YOW

8h 22m

1 stop

C$ 432United Airlines

Thu, 9 Apr - Sat, 11 Apr

5:11 p.m. - 9:23 p.m.

YOW

STL

5h 12m

1 stop

11:15 a.m. - 5:07 p.m.

STL

YOW

4h 52m

1 stop

C$ 436United Airlines

Fri, 27 Mar - Mon, 30 Mar

10:00 a.m. - 9:08 p.m.

YOW

STL

12h 08m

2 stops

7:45 a.m. - 5:07 p.m.

STL

YOW

8h 22m

1 stop

C$ 446United Airlines

Thu, 9 Apr - Sat, 11 Apr

12:30 p.m. - 10:17 p.m.

YUL

STL

10h 47m

1 stop

5:21 p.m. - 11:44 a.m.

STL

YUL

17h 23m

1 stop

C$ 477American Airlines

Mon, 20 Apr - Sat, 25 Apr

7:15 a.m. - 3:29 p.m.

YOW

STL

9h 14m

1 stop

4:05 p.m. - 11:18 p.m.

STL

YOW

6h 13m

1 stop

C$ 502Air Canada

Sun, 1 Mar - Wed, 4 Mar

7:30 p.m. - 10:13 a.m.

YOW

STL

15h 43m

1 stop

7:00 a.m. - 5:18 p.m.

STL

YOW

9h 18m

2 stops

C$ 521United Airlines

Mon, 23 Feb - Wed, 25 Feb

6:10 p.m. - 8:05 p.m.

YUL

STL

2h 55mdirect

1:15 p.m. - 4:50 p.m.

STL

YUL

2h 35mdirect

C$ 621Air Canada

Sat, 27 Jun - Sun, 28 Jun

6:45 p.m. - 11:59 p.m.

YUL

STL

6h 14m

1 stop

6:04 p.m. - 11:13 p.m.

STL

YUL

4h 09m

1 stop

C$ 645Delta

Sun, 10 May - Sat, 16 May

6:00 a.m. - 1:05 p.m.

YUL

STL

8h 05m

1 stop

3:59 p.m. - 11:41 p.m.

STL

YUL

6h 42m

1 stop

C$ 647Delta

Sun, 10 May - Sat, 16 May

American Airlines flights from Quebec to St. Louis

Our best American Airlines deals on Quebec to St. Louis flight tickets

American Airlines

20 Apr

YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl

10h 47m

1 stop

STL10:17 p.m.Lambert-St Louis

25 Apr

STL5:21 p.m.Lambert-St Louis

17h 23m

1 stop

YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 425

American Airlines

20 Apr

YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl

10h 47m

1 stop

STL10:17 p.m.Lambert-St Louis

25 Apr

STL5:21 p.m.Lambert-St Louis

17h 23m

1 stop

YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 477

American Airlines

3 Apr

YUL2:25 p.m.Montreal Pierre Elliott Trudeau Intl

19h 10m

1 stop

STL8:35 a.m.Lambert-St Louis

11 Apr

STL8:03 p.m.Lambert-St Louis

14h 41m

1 stop

YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 526

Air Canada flights from Quebec to St. Louis

Our best Air Canada deals on Quebec to St. Louis flight tickets

Air Canada

1 Mar

YOW7:15 a.m.Ottawa

9h 14m

1 stop

STL3:29 p.m.Lambert-St Louis

4 Mar

STL4:05 p.m.Lambert-St Louis

6h 13m

1 stop

YOW11:18 p.m.Ottawa

C$ 502

Air Canada

27 Jun

YUL6:10 p.m.Montreal Pierre Elliott Trudeau Intl

2h 55m

STL8:05 p.m.Lambert-St Louis

28 Jun

STL1:15 p.m.Lambert-St Louis

2h 35m

YUL4:50 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 621

Air Canada

27 Jun

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

6h 16m

1 stop

STL12:21 p.m.Lambert-St Louis

28 Jun

STL1:15 p.m.Lambert-St Louis

2h 35m

YUL4:50 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 640

Fly from

Fly to

Route

Depart

Return

Price

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

12:30 p.m.-10:17 p.m.

1 stop10h 47m

Lambert-St Louis

Sat 25/4

5:21 p.m.-11:44 a.m.

1 stop17h 23m

C$ 425

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 9/4

10:44 a.m.-9:08 p.m.

1 stop11h 24m

Lambert-St Louis

Sat 11/4

7:45 a.m.-5:07 p.m.

1 stop8h 22m

C$ 432

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 27/3

5:11 p.m.-9:23 p.m.

1 stop5h 12m

Lambert-St Louis

Mon 30/3

11:15 a.m.-5:07 p.m.

1 stop4h 52m

C$ 436

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 9/4

10:00 a.m.-9:08 p.m.

2 stops12h 08m

Lambert-St Louis

Sat 11/4

7:45 a.m.-5:07 p.m.

1 stop8h 22m

C$ 446

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

12:30 p.m.-10:17 p.m.

1 stop10h 47m

Lambert-St Louis

Sat 25/4

5:21 p.m.-11:44 a.m.

1 stop17h 23m

C$ 477

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 1/3

7:15 a.m.-3:29 p.m.

1 stop9h 14m

Lambert-St Louis

Wed 4/3

4:05 p.m.-11:18 p.m.

1 stop6h 13m

C$ 502

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mon 23/2

7:30 p.m.-10:13 a.m.

1 stop15h 43m

Lambert-St Louis

Wed 25/2

7:00 a.m.-5:18 p.m.

2 stops9h 18m

C$ 521

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 27/6

6:10 p.m.-8:05 p.m.

Nonstop2h 55m

Lambert-St Louis

Sun 28/6

1:15 p.m.-4:50 p.m.

Nonstop2h 35m

C$ 621

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 10/5

6:45 p.m.-11:59 p.m.

1 stop6h 14m

Lambert-St Louis

Sat 16/5

6:04 p.m.-11:13 p.m.

1 stop4h 09m

C$ 645

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 10/5

6:00 a.m.-1:05 p.m.

1 stop8h 05m

Lambert-St Louis

Sat 16/5

3:59 p.m.-11:41 p.m.

1 stop6h 42m

C$ 647

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 September to fly from Quebec, when ticket prices are also cheap, with an average price of C$ 575.

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 Saturday, with ticket prices averaging around C$ 915.

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, Tue, Wed and Sun
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, Tuesday, Wednesday and Sunday. 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 February 2026.
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 Airbus A220-300, making up 66.67% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet 900 with 33.33%.

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
United Airlines	PriceFrom C$ 450	Free Cancellation	Rating 7.4 9,259 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 535	Free Cancellation	Rating 7.1 10,698 reviews	Search Air Canada flights
WestJet	PriceFrom C$ 694	Free Cancellation	Rating 7.2 3,256 reviews	Search WestJet flights

Chesterfield

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$ 280

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 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names, great deals

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Filter for what you want

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Cheap round-trip flights

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Cheap last-minute flights

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American Airlines flights from Quebec to St. Louis

Our best American Airlines deals on Quebec to St. Louis flight tickets

Air Canada flights from Quebec to St. Louis

Our best Air Canada 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 September to fly from Quebec, when ticket prices are also cheap, with an average price of C$ 575.

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 Saturday, with ticket prices averaging around C$ 915.

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?

American Airlines, Air Canada, and Delta 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

Fly your favourite airline to St. Louis

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