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

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

How many flights depart from Quebec to St. Louis on average per day?

The number of flights available between Quebec and St. Louis is 2 per day as of August 2026. The most frequent departure time is 4:00PM, with 100% of daily flights leaving in the afternoon.

How many flights depart from Quebec to St. Louis on average per week?

The number of flights available between Quebec and St. Louis is 14 per week as of August 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

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 were last updated today.

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 1 as of August 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 travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$223 Cheap Flights from Quebec to St. Louis in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Quebec to St. Louis

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:34 pm - 10:18 amYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

17h 44m1 stop Chicago O'Hare Intl

5:18 pm - 11:44 amSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

17h 26m1 stop Chicago O'Hare Intl

$424American Airlines

Fri, Sep 18 - Mon, Sep 21

12:30 pm - 12:19 amYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

12h 49m1 stop Chicago O'Hare Intl

7:29 am - 4:52 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

8h 23m1 stop Chicago O'Hare Intl

$427American Airlines

Wed, Oct 28 - Sat, Oct 31

5:34 pm - 10:50 amYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

18h 16m1 stop Chicago O'Hare Intl

7:29 am - 4:52 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

8h 23m1 stop Chicago O'Hare Intl

$430American Airlines

Wed, Oct 14 - Wed, Oct 21

5:34 pm - 10:50 amYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

18h 16m1 stop Chicago O'Hare Intl

8:15 pm - 11:25 amSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

14h 10m1 stop Chicago O'Hare Intl

$434American Airlines

Tue, Oct 6 - Tue, Nov 3

5:20 pm - 9:21 pmYOW Ottawa-STL Lambert-St Louis

5h 01m1 stop Chicago O'Hare Intl

7:30 am - 10:35 pmSTL Lambert-St Louis-YOW Ottawa

14h 05m1 stop Newark

$492United Airlines

Thu, Sep 24 - Mon, Sep 28

12:30 pm - 12:19 amYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

12h 49m1 stop Chicago O'Hare Intl

5:27 pm - 11:44 amSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

17h 17m1 stop Chicago O'Hare Intl

$492American Airlines

Thu, Oct 15 - Mon, Oct 19

5:34 pm - 10:18 amYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

17h 44m1 stop Chicago O'Hare Intl

4:37 pm - 9:49 amSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

16h 12m1 stop New York LaGuardia

$492American Airlines

Fri, Sep 18 - Mon, Sep 21

6:25 am - 11:57 amYOW Ottawa-STL Lambert-St Louis

6h 32m1 stop Chicago O'Hare Intl

9:30 am - 10:35 pmSTL Lambert-St Louis-YOW Ottawa

12h 05m1 stop Newark

$493United Airlines

Wed, Sep 23 - Wed, Sep 30

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$528Air Canada

Wed, Oct 14 - Wed, Oct 21

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$533Air Canada

Thu, Oct 15 - Mon, Oct 19

Cheap direct flights

Enter your travel dates to find the best prices.

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$528Air Canada

Wed, Oct 14 - Wed, Oct 21

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$533Air Canada

Thu, Oct 15 - Mon, Oct 19

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$534Air Canada

Thu, Oct 15 - Mon, Oct 19

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$535Air Canada

Thu, Sep 24 - Sun, Sep 27

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$538Air Canada

Thu, Sep 24 - Sun, Sep 27

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$610Air Canada

Tue, Oct 6 - Thu, Oct 8

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$610Air Canada

Tue, Oct 6 - Wed, Oct 7

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$610Air Canada

Tue, Oct 6 - Sat, Oct 10

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$1,067United Airlines

Thu, Oct 8 - Mon, Oct 12

4:55 pm - 6:41 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

2h 46mnonstop

12:10 pm - 3:41 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

2h 31mnonstop

$1,068United Airlines

Thu, Oct 8 - Mon, Oct 12

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Delta flights from Quebec to St. Louis

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

Delta

Sep 24

YOW6:55 amOttawa

11h 50m

2 stops

STL5:45 pmLambert-St Louis

Sep 28

STL2:30 pmLambert-St Louis

8h 50m

2 stops

YOW12:20 amOttawa

$571

Delta

Oct 8

YUL6:50 pmMontreal Pierre Elliott Trudeau Intl

6h 04m

1 stop

STL11:54 pmLambert-St Louis

Oct 13

STL6:05 pmLambert-St Louis

13h 27m

2 stops

YUL8:32 amMontreal Pierre Elliott Trudeau Intl

$575

Delta

Nov 25

YUL7:48 pmMontreal Pierre Elliott Trudeau Intl

14h 37m

2 stops

STL9:25 amLambert-St Louis

Nov 30

STL6:00 pmLambert-St Louis

4h 27m

1 stop

YUL11:27 pmMontreal Pierre Elliott Trudeau Intl

$577

American Airlines flights from Quebec to St. Louis

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

American Airlines

Sep 18

YUL5:34 pmMontreal Pierre Elliott Trudeau Intl

17h 44m

1 stop

STL10:18 amLambert-St Louis

Sep 21

STL5:18 pmLambert-St Louis

17h 26m

1 stop

YUL11:44 amMontreal Pierre Elliott Trudeau Intl

$424

American Airlines

Oct 28

YUL12:30 pmMontreal Pierre Elliott Trudeau Intl

12h 49m

1 stop

STL12:19 amLambert-St Louis

Oct 31

STL7:29 amLambert-St Louis

8h 23m

1 stop

YUL4:52 pmMontreal Pierre Elliott Trudeau Intl

$427

American Airlines

Oct 14

YUL5:34 pmMontreal Pierre Elliott Trudeau Intl

18h 16m

1 stop

STL10:50 amLambert-St Louis

Oct 21

STL7:29 amLambert-St Louis

8h 23m

1 stop

YUL4:52 pmMontreal Pierre Elliott Trudeau Intl

$430

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 9/18

5:34 pm-10:18 am

1 stop17h 44m

Lambert-St Louis

Mon 9/21

5:18 pm-11:44 am

1 stop17h 26m

$424

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 10/28

12:30 pm-12:19 am

1 stop12h 49m

Lambert-St Louis

Sat 10/31

7:29 am-4:52 pm

1 stop8h 23m

$427

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 10/14

5:34 pm-10:50 am

1 stop18h 16m

Lambert-St Louis

Wed 10/21

7:29 am-4:52 pm

1 stop8h 23m

$430

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 10/6

5:34 pm-10:50 am

1 stop18h 16m

Lambert-St Louis

Tue 11/3

8:15 pm-11:25 am

1 stop14h 10m

$434

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Thu 9/24

5:20 pm-9:21 pm

1 stop5h 01m

Lambert-St Louis

Mon 9/28

7:30 am-10:35 pm

1 stop14h 05m

$492

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/15

12:30 pm-12:19 am

1 stop12h 49m

Lambert-St Louis

Mon 10/19

5:27 pm-11:44 am

1 stop17h 17m

$492

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 9/18

5:34 pm-10:18 am

1 stop17h 44m

Lambert-St Louis

Mon 9/21

4:37 pm-9:49 am

1 stop16h 12m

$492

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Wed 9/23

6:25 am-11:57 am

1 stop6h 32m

Lambert-St Louis

Wed 9/30

9:30 am-10:35 pm

1 stop12h 05m

$493

Quickest round-trip

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 10/14

4:55 pm-6:41 pm

Nonstop2h 46m

Lambert-St Louis

Wed 10/21

12:10 pm-3:41 pm

Nonstop2h 31m

$528

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/15

4:55 pm-6:41 pm

Nonstop2h 46m

Lambert-St Louis

Mon 10/19

12:10 pm-3:41 pm

Nonstop2h 31m

$533

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?

In general, August is the cheapest month to fly from Quebec to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $442. The month of May is another great option to travel to St. Louis, with average flight prices from Quebec averaging around $548.

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

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $498. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $669. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

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 St. Louis flights?

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

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

Best Price Found	$223
Fastest flight time	2h 46m
Direct flights	Tue, Wed, Thu, Fri, Sat and Sun
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Quebec in the past 72 hours is $223. The best round-trip flight deal from Quebec to St. Louis found on momondo in the last 72 hours is $424.

The fastest flight from Quebec to St. Louis takes 2h 46m

Direct flights go from Quebec to St. Louis on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

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

Search flight deals

Frequently asked questions about flying from Quebec to 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 were last updated today.
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 1 as of August 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 travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek 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 this flight route, the most popular plane model on flight routes from Quebec to St. Louis is Canadair (Bombardier) Regional Jet 900 (95.24% of total bookings). The next most popular plane model is Airbus A220-300 (4.76%).

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 $498	Free Cancellation	Rating 7.1 11,540 reviews		Search Air Canada flights

St. Charles

Chesterfield

Fairview Heights

Maryland Heights

St. Peters

Hermann

Alton

Florissant

Collinsville

O'Fallon

Farmington

Clayton

Fenton

Festus

Wentzville

Eureka

Edwardsville

Litchfield

Grafton

Shrewsbury

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Quebec to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Quebec with this policy.

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

momondo helps you find the best flight between Quebec and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Quebec to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your St. Louis trip

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Airports servicing Missouri

Branson Airport

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Kirksville Cannon Memorial Airport

Joplin Airport

Kansas City Airport

Springfield-Branson Airport

Fort Leonard Wood Waynesville Regional Airport

Cheap flights from Quebec to St. Louis from $223

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 9/24. 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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Delta flights from Quebec to St. Louis

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

American Airlines flights from Quebec to St. Louis

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

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

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

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

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

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

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

How many flights depart from Quebec to St. Louis on average per day?

How many flights depart from Quebec to St. Louis on average per week?

Cheap Quebec to St. Louis flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in St. Louis

Frequently asked questions about flying 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

Traveling to a place near St. Louis?

Why use momondo?

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 favorite airline to St. Louis

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to St. Louis

List of cabin classes available on flights landing in St. Louis. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

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