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

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

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

As of September 2026, there are 14 flights per week flying from St. Louis to Quebec. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

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

2 flights are operational daily from St. Louis to Quebec as of September 2026. The most popular departure time for this route is 12:00PM, with 100% of flights per day taking off in the afternoon.

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

Prices for flights from Lambert-St Louis Airport to Quebec were last updated today.

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

The number of operators available for flights from Lambert-St Louis Airport to Quebec is 2 as of September 2026.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Quebec.

What documentation or ID do you need to fly to Quebec?

The required travel and health documents for your Quebec trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Quebec. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$166 Cheap Flights from St. Louis to Quebec in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Quebec

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 pm - 4:44 pmSTL Lambert-St Louis-YOW Ottawa

23h 14m1 stop Orlando

8:00 am - 11:16 pmYOW Ottawa-STL Lambert-St Louis

16h 16m1 stop Orlando

$429Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

5:23 pm - 11:44 amSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

17h 21m1 stop Chicago O'Hare Intl

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

18h 16m1 stop Chicago O'Hare Intl

$458American Airlines

Sat, Oct 17 - Wed, Oct 21

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

14h 10m1 stop Chicago O'Hare Intl

12:10 pm - 11:59 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

12h 49m1 stop Chicago O'Hare Intl

$486American Airlines

Tue, Nov 10 - Mon, Nov 16

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

14h 10m1 stop Chicago O'Hare Intl

12:10 pm - 11:59 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

12h 49m1 stop Chicago O'Hare Intl

$486American Airlines

Sat, Nov 7 - Wed, Nov 11

8:55 am - 3:10 pmSTL Lambert-St Louis-YOW Ottawa

5h 15m1 stop Toronto Pearson Intl

2:50 pm - 6:41 pmYOW Ottawa-STL Lambert-St Louis

4h 51m1 stop Montreal Pierre Elliott Trudeau Intl

$556Air Canada

Thu, Oct 1 - Tue, Oct 6

8:55 am - 3:57 pmSTL Lambert-St Louis-YQB Québec City

6h 02m1 stop Toronto Pearson Intl

10:40 am - 3:23 pmYQB Québec City-STL Lambert-St Louis

5h 43m1 stop Toronto Pearson Intl

$570Air Canada

Fri, Oct 23 - Fri, Oct 30

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

2h 31mnonstop

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

2h 46mnonstop

$588Air Canada

Thu, Oct 15 - Wed, Oct 21

8:00 am - 3:07 pmSTL Lambert-St Louis-YOW Ottawa

6h 07m1 stop Washington, D.C. Dulles Intl

6:15 am - 12:10 pmYOW Ottawa-STL Lambert-St Louis

6h 55m1 stop Chicago O'Hare Intl

$643United Airlines

Wed, Nov 18 - Tue, Nov 24

7:30 am - 4:38 pmSTL Lambert-St Louis-YOW Ottawa

8h 08m1 stop Newark

6:05 am - 11:22 amYOW Ottawa-STL Lambert-St Louis

6h 17m1 stop Newark

$643United Airlines

Sun, Oct 4 - Sun, Oct 11

7:30 am - 4:38 pmSTL Lambert-St Louis-YOW Ottawa

8h 08m1 stop Newark

6:25 am - 3:43 pmYOW Ottawa-STL Lambert-St Louis

10h 18m1 stop Chicago O'Hare Intl

$643United Airlines

Sat, Oct 3 - Sat, Oct 10

Cheap last minute flights

Enter your travel dates to find the best prices.

5:19 pm - 4:15 pmSTL Lambert-St Louis-YOW Ottawa

21h 56m2 stops Orlando Newark

7:00 am - 4:34 pmYOW Ottawa-STL Lambert-St Louis

10h 34m1 stop Orlando

$833Multiple Airlines

Mon, Sep 14 - Fri, Sep 18

12:10 pm - 5:29 pmSTL Lambert-St Louis-YOW Ottawa

4h 19m1 stop Montreal Pierre Elliott Trudeau Intl

9:00 am - 2:00 pmYOW Ottawa-STL Lambert-St Louis

6h 00m1 stop Toronto Pearson Intl

$1,011Air Canada

Mon, Sep 14 - Fri, Sep 18

12:17 pm - 7:05 amSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

17h 48m2 stops Las Vegas Harry Reid Intl Calgary

6:47 pm - 11:42 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

5h 55m1 stop Atlanta Hartsfield-Jackson

$1,117Multiple Airlines

Sat, Sep 12 - Mon, Sep 14

8:00 am - 4:38 pmSTL Lambert-St Louis-YOW Ottawa

7h 38m2 stops Chicago O'Hare Intl Newark

12:00 pm - 8:00 pmYOW Ottawa-STL Lambert-St Louis

9h 00m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$1,119Multiple Airlines

Mon, Sep 14 - Fri, Sep 18

5:00 am - 4:53 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

10h 53m1 stop Chicago O'Hare Intl

7:50 am - 5:05 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

10h 15m1 stop Philadelphia

$1,197American Airlines

Sat, Sep 12 - Mon, Sep 14

7:00 am - 4:53 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

8h 53m2 stops Dallas/Fort Worth Chicago O'Hare Intl

7:50 am - 5:30 pmYUL Montreal Pierre Elliott Trudeau Intl-STL Lambert-St Louis

10h 40m2 stops Philadelphia Charlotte Douglas

$1,212American Airlines

Sat, Sep 12 - Mon, Sep 14

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

2h 31mnonstop

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

2h 46mnonstop

$1,237Air Canada

Sat, Sep 12 - Mon, Sep 14

8:55 am - 3:21 pmSTL Lambert-St Louis-YUL Montreal Pierre Elliott Trudeau Intl

5h 26m1 stop Toronto Pearson Intl

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

2h 46mnonstop

$1,251Air Canada

Sat, Sep 12 - Mon, Sep 14

5:13 pm - 8:00 pmSTL Lambert-St Louis-YOW Ottawa

25h 47m2 stops Washington, D.C. Reagan-National Toronto Pearson Intl

7:00 am - 8:44 pmYOW Ottawa-STL Lambert-St Louis

14h 44m3 stops Toronto Pearson Intl New York LaGuardia Chicago O'Hare Intl

$1,475American Airlines

Mon, Sep 14 - Fri, Sep 18

7:21 am - 8:00 pmSTL Lambert-St Louis-YOW Ottawa

11h 39m3 stops Chicago O'Hare Intl Washington, D.C. Reagan-National Toronto Pearson Intl

7:00 am - 9:24 pmYOW Ottawa-STL Lambert-St Louis

15h 24m3 stops Toronto Pearson Intl New York LaGuardia Washington, D.C. Reagan-National

$1,522American Airlines

Mon, Sep 14 - Fri, Sep 18

Cheap direct flights

Enter your travel dates to find the best prices.

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

2h 31mnonstop

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

2h 46mnonstop

$588Air Canada

Sat, Oct 17 - Wed, Oct 21

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

2h 31mnonstop

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

2h 46mnonstop

$588Air Canada

Thu, Oct 15 - Wed, Oct 21

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

2h 31mnonstop

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

2h 46mnonstop

$670Air Canada

Sun, Oct 11 - Fri, Oct 16

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

2h 31mnonstop

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

2h 46mnonstop

$670Air Canada

Fri, Oct 9 - Tue, Oct 20

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

2h 31mnonstop

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

2h 46mnonstop

$670Air Canada

Sat, Oct 3 - Sat, Oct 10

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

2h 31mnonstop

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

2h 46mnonstop

$670Air Canada

Sat, Oct 17 - Wed, Oct 21

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

2h 31mnonstop

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

2h 46mnonstop

$670Air Canada

Wed, Oct 7 - Mon, Oct 12

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

2h 31mnonstop

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

2h 46mnonstop

$670Air Canada

Sun, Oct 4 - Mon, Oct 12

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

2h 31mnonstop

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

2h 46mnonstop

$912United Airlines

Fri, Oct 2 - Tue, Oct 6

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

2h 31mnonstop

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

2h 46mnonstop

$1,251United Airlines

Sat, Oct 3 - Sat, Oct 10

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

American Airlines flights from St. Louis to Quebec

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

American Airlines

Oct 24

STL7:28 amLambert-St Louis

8h 24m

1 stop

YUL4:52 pmMontreal Pierre Elliott Trudeau Intl

Oct 31

YUL12:30 pmMontreal Pierre Elliott Trudeau Intl

9h 43m

1 stop

STL9:13 pmLambert-St Louis

$451

American Airlines

Oct 17

STL5:23 pmLambert-St Louis

17h 21m

1 stop

YUL11:44 amMontreal Pierre Elliott Trudeau Intl

Oct 21

YUL5:34 pmMontreal Pierre Elliott Trudeau Intl

18h 16m

1 stop

STL10:50 amLambert-St Louis

$458

American Airlines

Oct 24

STL5:22 pmLambert-St Louis

17h 22m

1 stop

YUL11:44 amMontreal Pierre Elliott Trudeau Intl

Oct 31

YUL1:06 pmMontreal Pierre Elliott Trudeau Intl

12h 13m

2 stops

STL12:19 amLambert-St Louis

$468

Air Canada flights from St. Louis to Quebec

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

Air Canada

Oct 1

STL8:55 amLambert-St Louis

5h 15m

1 stop

YOW3:10 pmOttawa

Oct 6

YOW2:50 pmOttawa

4h 51m

1 stop

STL6:41 pmLambert-St Louis

$556

Air Canada

Oct 23

STL8:55 amLambert-St Louis

6h 02m

1 stop

YQB3:57 pmQuébec City

Oct 30

YQB10:40 amQuébec City

5h 43m

1 stop

STL3:23 pmLambert-St Louis

$570

Air Canada

Oct 9

STL12:10 pmLambert-St Louis

2h 31m

YUL3:41 pmMontreal Pierre Elliott Trudeau Intl

Oct 12

YUL4:55 pmMontreal Pierre Elliott Trudeau Intl

2h 46m

STL6:41 pmLambert-St Louis

$588

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisOttawa

STL Lambert-St Louis - YOW Ottawa

STLYOW

Lambert-St Louis

Sat 10/24

4:30 pm-4:44 pm

1 stop23h 14m

Ottawa

Sat 10/31

8:00 am-11:16 pm

1 stop16h 16m

$429

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 10/17

5:23 pm-11:44 am

1 stop17h 21m

Montreal Pierre Elliott Trudeau Intl

Wed 10/21

5:34 pm-10:50 am

1 stop18h 16m

$458

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Tue 11/10

8:15 pm-11:25 am

1 stop14h 10m

Montreal Pierre Elliott Trudeau Intl

Mon 11/16

12:10 pm-11:59 pm

1 stop12h 49m

$486

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Sat 11/7

8:15 pm-11:25 am

1 stop14h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 11/11

12:10 pm-11:59 pm

1 stop12h 49m

$486

St. LouisOttawa

STL Lambert-St Louis - YOW Ottawa

STLYOW

Lambert-St Louis

Thu 10/1

8:55 am-3:10 pm

1 stop5h 15m

Ottawa

Tue 10/6

2:50 pm-6:41 pm

1 stop4h 51m

$556

St. LouisQuébec City

STL Lambert-St Louis - YQB Québec City

STLYQB

Lambert-St Louis

Fri 10/23

8:55 am-3:57 pm

1 stop6h 02m

Québec City

Fri 10/30

10:40 am-3:23 pm

1 stop5h 43m

$570

Quickest round-trip

St. LouisMontreal

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

STLYUL

Lambert-St Louis

Thu 10/15

12:10 pm-3:41 pm

Nonstop2h 31m

Montreal Pierre Elliott Trudeau Intl

Wed 10/21

4:55 pm-6:41 pm

Nonstop2h 46m

$588

St. LouisOttawa

STL Lambert-St Louis - YOW Ottawa

STLYOW

Lambert-St Louis

Wed 11/18

8:00 am-3:07 pm

1 stop6h 07m

Ottawa

Tue 11/24

6:15 am-12:10 pm

1 stop6h 55m

$643

St. LouisOttawa

STL Lambert-St Louis - YOW Ottawa

STLYOW

Lambert-St Louis

Sun 10/4

7:30 am-4:38 pm

1 stop8h 08m

Ottawa

Sun 10/11

6:05 am-11:22 am

1 stop6h 17m

$643

St. LouisOttawa

STL Lambert-St Louis - YOW Ottawa

STLYOW

Lambert-St Louis

Sat 10/3

7:30 am-4:38 pm

1 stop8h 08m

Ottawa

Sat 10/10

6:25 am-3:43 pm

1 stop10h 18m

$643

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 St. Louis to Quebec

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 Quebec?

If you aren’t able to travel to Quebec during the month of August, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $506.

What is the cheapest day to depart on your flight to Quebec?

Our data shows that Tuesday is the least expensive day to fly to Quebec. Tickets to fly out on this day can be as low as $927. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Quebec for around $1,198.

What is the cheapest time of day to depart on your flight to Quebec?

The cheapest time of day to fly to Quebec is in the morning when flights can be purchased for as low as $992. Try not to purchase tickets at noon because they tend to be around $1,104. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

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

There are 4 cabin classes available to choose from on St. Louis to Quebec 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 St. Louis to Quebec flights?

You could potentially save up to 1% on your flight if you consider stops on a St. Louis to Quebec flight.

Cheap St. Louis to Quebec flight deals and tips

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

Best Price Found	$166
Fastest flight time	2h 31m
Direct flights	Every day
Airports in Quebec	76 airports

The best one-way flight to Quebec from St. Louis in the past 72 hours is $166. The best round-trip flight deal from St. Louis to Quebec found on momondo in the last 72 hours is $429.

The fastest flight from St. Louis to Quebec takes 2h 31m

Direct flights go from St. Louis to Quebec every day.

There are 76 airports in Quebec. From St. Louis there are direct flights to Montreal Pierre Elliott Trudeau Intl (YUL).

Search flight deals

Frequently asked questions about flying from St. Louis to Quebec

When did momondo last update prices for flights from Lambert-St Louis Airport to Quebec?
Prices for flights from Lambert-St Louis Airport to Quebec were last updated today.
How many operators does momondo search for flights from Lambert-St Louis Airport to Quebec?
The number of operators available for flights from Lambert-St Louis Airport to Quebec is 2 as of September 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Quebec?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Quebec.
What documentation or ID do you need to fly to Quebec?
The required travel and health documents for your Quebec trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Quebec. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from St. Louis to Quebec?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from St. Louis to Quebec is Canadair (Bombardier) Regional Jet 900 (62.96% of total bookings). The next most popular plane models are Boeing 787-8 Dreamliner (24.69%), Airbus A220-300 (7.41%), and Airbus A330-300 (3.70%).

Best airlines flying from St. Louis to Quebec

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

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $257	Free Cancellation	Rating 7.1 11,603 reviews		Search Air Canada flights
United Airlines	PriceFrom $296	Free Cancellation	Rating 7.4 10,190 reviews		Search United Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Quebec. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Quebec from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for St. Louis to Quebec 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 St. Louis to Quebec right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Quebec, momondo offers a useful price alert feature which will track prices for flights to Quebec from St. Louis and alert you when they change.