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Cheap flights from St. Louis to Quebec from $135

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Quebec departing on 12/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Quebec

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:43 pm - 3:07 pmSTL-YUL
19h 24m1 stop
American Airlines Logo
3:52 pm - 10:22 amYUL-STL
19h 30m1 stop
$272American Airlines
Find Deal
sáb., ene. 10 - mié., ene. 28
American Airlines Logo
6:43 pm - 3:07 pmSTL-YUL
19h 24m1 stop
American Airlines Logo
7:30 am - 6:14 pmYUL-STL
11h 44m2 stops
$282American Airlines
Find Deal
sáb., ene. 10 - mié., ene. 28
Multiple Airlines Logo
10:42 am - 11:58 pmSTL-YOW
12h 16m2 stops
Multiple Airlines Logo
9:30 am - 10:33 pmYOW-STL
14h 03m1 stop
$353Multiple Airlines
Find Deal
vie., dic. 5 - mar., dic. 9
Multiple Airlines Logo
11:50 am - 9:56 pmSTL-YOW
9h 06m1 stop
Multiple Airlines Logo
10:20 am - 3:29 pmYOW-STL
6h 09m1 stop
$359Multiple Airlines
Find Deal
vie., dic. 5 - mar., dic. 9
Air Canada Logo
4:05 pm - 11:04 pmSTL-YOW
5h 59m1 stop
Air Canada Logo
9:15 am - 3:24 pmYOW-STL
7h 09m1 stop
$361Air Canada
Find Deal
mar., abr. 7 - mié., abr. 8
United Airlines Logo
6:42 pm - 10:26 amSTL-YOW
14h 44m1 stop
United Airlines Logo
7:30 pm - 12:15 pmYOW-STL
17h 45m2 stops
$372United Airlines
Find Deal
sáb., dic. 6 - sáb., dic. 13
Air Canada Logo
7:41 am - 10:18 pmSTL-YOW
13h 37m2 stops
Air Canada Logo
10:20 am - 3:29 pmYOW-STL
6h 09m1 stop
$439Air Canada
Find Deal
mié., feb. 25 - sáb., feb. 28
United Airlines Logo
3:14 pm - 11:54 pmSTL-YOW
7h 40m2 stops
United Airlines Logo
6:00 am - 10:37 amYOW-STL
5h 37m1 stop
$441United Airlines
Find Deal
sáb., nov. 8 - jue., nov. 13
Delta Logo
6:00 am - 6:40 pmSTL-YUL
11h 40m1 stop
Delta Logo
7:45 pm - 8:20 amYUL-STL
13h 35m1 stop
$520Delta
Find Deal
lun., nov. 24 - mar., dic. 2
Delta Logo
6:40 am - 6:40 pmSTL-YUL
11h 00m2 stops
Delta Logo
7:45 pm - 8:20 amYUL-STL
13h 35m1 stop
$563Delta
Find Deal
lun., nov. 24 - mar., dic. 2

American Airlines flights from St. Louis to Quebec

Our best American Airlines deals on St. Louis to Quebec flight tickets
American Airlines
Jan 10
STL6:43 pmLambert-St Louis
19h 24m
1 stop
YUL3:07 pmMontreal Pierre Elliott Trudeau Intl
Jan 28
YUL3:52 pmMontreal Pierre Elliott Trudeau Intl
19h 30m
1 stop
STL10:22 amLambert-St Louis
$272
Find similar
American Airlines
Jan 10
STL6:43 pmLambert-St Louis
19h 24m
1 stop
YUL3:07 pmMontreal Pierre Elliott Trudeau Intl
Jan 28
YUL7:30 amMontreal Pierre Elliott Trudeau Intl
11h 44m
2 stops
STL6:14 pmLambert-St Louis
$282
Find similar
American Airlines
Jan 26
STL6:44 pmLambert-St Louis
19h 23m
1 stop
YUL3:07 pmMontreal Pierre Elliott Trudeau Intl
Jan 30
YUL3:52 pmMontreal Pierre Elliott Trudeau Intl
19h 30m
1 stop
STL10:22 amLambert-St Louis
$309
Find similar

Delta flights from St. Louis to Quebec

Our best Delta deals on St. Louis to Quebec flight tickets
Delta
Nov 24
STL6:00 amLambert-St Louis
11h 40m
1 stop
YUL6:40 pmMontreal Pierre Elliott Trudeau Intl
Dec 2
YUL7:45 pmMontreal Pierre Elliott Trudeau Intl
13h 35m
1 stop
STL8:20 amLambert-St Louis
$520
Find similar
Delta
Nov 24
STL6:40 amLambert-St Louis
11h 00m
2 stops
YUL6:40 pmMontreal Pierre Elliott Trudeau Intl
Dec 2
YUL7:45 pmMontreal Pierre Elliott Trudeau Intl
13h 35m
1 stop
STL8:20 amLambert-St Louis
$563
Find similar
Delta
Nov 21
STL5:34 pmLambert-St Louis
5h 08m
1 stop
YUL11:42 pmMontreal Pierre Elliott Trudeau Intl
Dec 2
YUL7:45 pmMontreal Pierre Elliott Trudeau Intl
13h 35m
1 stop
STL8:20 amLambert-St Louis
$573
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Quebec that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated octubre 23, 2025.
Use the filters below to find and compare flights from St. Louis to Quebec that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

sáb. 1/10

6:43 pm-3:07 pm

1 stop19h 24m

Montreal Pierre Elliott Trudeau Intl

mié. 1/28

3:52 pm-10:22 am

1 stop19h 30m

$272

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

sáb. 1/10

6:43 pm-3:07 pm

1 stop19h 24m

Montreal Pierre Elliott Trudeau Intl

mié. 1/28

7:30 am-6:14 pm

2 stops11h 44m

$282

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

vie. 12/5

10:42 am-11:58 pm

2 stops12h 16m

Ottawa

mar. 12/9

9:30 am-10:33 pm

1 stop14h 03m

$353

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

vie. 12/5

11:50 am-9:56 pm

1 stop9h 06m

Ottawa

mar. 12/9

10:20 am-3:29 pm

1 stop6h 09m

$359

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

mar. 4/7

4:05 pm-11:04 pm

1 stop5h 59m

Ottawa

mié. 4/8

9:15 am-3:24 pm

1 stop7h 09m

$361

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

sáb. 12/6

6:42 pm-10:26 am

1 stop14h 44m

Ottawa

sáb. 12/13

7:30 pm-12:15 pm

2 stops17h 45m

$372

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

mié. 2/25

7:41 am-10:18 pm

2 stops13h 37m

Ottawa

sáb. 2/28

10:20 am-3:29 pm

1 stop6h 09m

$439

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

sáb. 11/8

3:14 pm-11:54 pm

2 stops7h 40m

Ottawa

jue. 11/13

6:00 am-10:37 am

1 stop5h 37m

$441

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

lun. 11/24

6:00 am-6:40 pm

1 stop11h 40m

Montreal Pierre Elliott Trudeau Intl

mar. 12/2

7:45 pm-8:20 am

1 stop13h 35m

$520

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

lun. 11/24

6:40 am-6:40 pm

2 stops11h 00m

Montreal Pierre Elliott Trudeau Intl

mar. 12/2

7:45 pm-8:20 am

1 stop13h 35m

$563

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Quebec from

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

What is the cheapest month to fly to Quebec?

If you aren’t able to travel to Quebec during the month of June, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $462.

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

Our data shows that Monday is the least expensive day to fly to Quebec. Tickets to fly out on this day can be as low as $1,034. 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 $1,215.

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 evening when flights can be purchased for as low as $266. Try not to purchase tickets at noon because they tend to be around $1,099. 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 Lambert-St Louis to Quebec flights?

There are 3 cabin classes available to choose from on Lambert-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?

No. A direct flight is the cheapest option for a flight between St. Louis to Quebec.

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

$538

Direct flights

None
The best one-way flight to Quebec from St. Louis in the past 72 hours is $538. The best round-trip flight deal from St. Louis to Quebec found on momondo in the last 72 hours is $739.
There are no direct flights from St. Louis to Quebec. Popular non-direct route for this connection is Lambert-St Louis Airport - Montreal Pierre Elliott Trudeau Intl Airport.
Search flight deals

  • 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?

  • 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?

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 CanadaPriceFrom $211Free CancellationRating
7.1
10,346 reviews
Search Air Canada flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
8,991 reviews
Search United Airlines flights
DeltaPriceFrom $255Free CancellationRating
7.9
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $348Free CancellationRating
7.2
11,028 reviews
Search American 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.

An easier way to manage your Quebec 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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sáb. 11/22
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