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Cheap flights from St. Louis to Quebec from $155

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 3/18. 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
6:00 am - 3:04 pm
STL
-
YUL
8h 04m
1 stop
American Airlines Logo
3:45 pm - 10:13 am
YUL
-
STL
19h 28m
1 stop
$368American Airlines
Tue, Feb 17 - Fri, Feb 20
United Airlines Logo
10:00 am - 5:12 pm
STL
-
YOW
6h 12m
1 stop
United Airlines Logo
5:55 pm - 11:51 pm
YOW
-
STL
6h 56m
1 stop
$370United Airlines
Tue, Mar 10 - Tue, Mar 17
American Airlines Logo
10:37 am - 10:56 pm
STL
-
YUL
11h 19m
2 stops
American Airlines Logo
3:45 pm - 10:13 am
YUL
-
STL
19h 28m
1 stop
$378American Airlines
Tue, Feb 17 - Fri, Feb 20
United Airlines Logo
7:40 am - 6:55 pm
STL
-
YOW
10h 15m
2 stops
United Airlines Logo
5:11 pm - 9:07 pm
YOW
-
STL
4h 56m
1 stop
$380United Airlines
Tue, Mar 10 - Tue, Mar 17
American Airlines Logo
6:00 am - 3:04 pm
STL
-
YUL
8h 04m
1 stop
American Airlines Logo
3:45 pm - 11:44 pm
YUL
-
STL
8h 59m
1 stop
$381American Airlines
Thu, Mar 5 - Mon, Mar 9
United Airlines Logo
10:00 am - 6:55 pm
STL
-
YOW
7h 55m
2 stops
United Airlines Logo
3:15 pm - 10:59 pm
YOW
-
STL
8h 44m
2 stops
$385United Airlines
Tue, Mar 10 - Tue, Mar 17
Air Canada Logo
1:00 pm - 8:51 pm
STL
-
YOW
6h 51m
1 stop
Air Canada Logo
2:25 pm - 8:05 pm
YOW
-
STL
6h 40m
1 stop
$399Air Canada
Wed, May 13 - Sun, May 17
American Airlines Logo
6:57 pm - 1:45 pm
STL
-
YUL
17h 48m
1 stop
American Airlines Logo
3:45 pm - 9:29 am
YUL
-
STL
18h 44m
1 stop
$476American Airlines
Mon, Mar 9 - Mon, Mar 16
American Airlines Logo
6:27 am - 3:27 pm
STL
-
YUL
8h 00m
1 stop
American Airlines Logo
12:30 pm - 11:48 pm
YUL
-
STL
12h 18m
1 stop
$497American Airlines
Sun, May 3 - Thu, May 7
Air Canada Logo
4:05 pm - 10:48 pm
STL
-
YQB
5h 43m
1 stop
Air Canada Logo
10:55 am - 3:29 pm
YQB
-
STL
5h 34m
1 stop
$682Air Canada
Sun, Feb 15 - Wed, Feb 18

Delta flights from St. Louis to Quebec

Our best Delta deals on St. Louis to Quebec flight tickets
Delta
Mar 19
STL10:12 amLambert-St Louis
6h 19m
1 stop
YUL5:31 pmMontreal Pierre Elliott Trudeau Intl
Mar 22
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
4h 46m
1 stop
STL9:46 amLambert-St Louis
$583
Delta
Feb 19
STL6:00 amLambert-St Louis
11h 35m
2 stops
YUL6:35 pmMontreal Pierre Elliott Trudeau Intl
Feb 23
YUL12:30 pmMontreal Pierre Elliott Trudeau Intl
9h 11m
1 stop
STL8:41 pmLambert-St Louis
$590

WestJet flights from St. Louis to Quebec

Our best WestJet deals on St. Louis to Quebec flight tickets
WestJet
Feb 14
STL5:50 pmLambert-St Louis
4h 20m
1 stop
YUL11:10 pmMontreal Pierre Elliott Trudeau Intl
Feb 16
YUL6:00 pmMontreal Pierre Elliott Trudeau Intl
16h 06m
1 stop
STL9:06 amLambert-St Louis
$667
WestJet
Apr 27
STL6:00 amLambert-St Louis
17h 40m
2 stops
YUL12:40 amMontreal Pierre Elliott Trudeau Intl
Apr 29
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
14h 53m
2 stops
STL8:38 pmLambert-St Louis
$694
WestJet
Mar 19
STL6:10 amLambert-St Louis
17h 28m
2 stops
YUL12:38 amMontreal Pierre Elliott Trudeau Intl
Mar 23
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
7h 13m
2 stops
STL12:58 pmLambert-St Louis
$699

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 January 25, 2026.
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

Tue 2/17

6:00 am-3:04 pm

1 stop8h 04m

Montreal Pierre Elliott Trudeau Intl

Fri 2/20

3:45 pm-10:13 am

1 stop19h 28m

$368

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 3/10

10:00 am-5:12 pm

1 stop6h 12m

Ottawa

Tue 3/17

5:55 pm-11:51 pm

1 stop6h 56m

$370

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 2/17

10:37 am-10:56 pm

2 stops11h 19m

Montreal Pierre Elliott Trudeau Intl

Fri 2/20

3:45 pm-10:13 am

1 stop19h 28m

$378

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 3/10

7:40 am-6:55 pm

2 stops10h 15m

Ottawa

Tue 3/17

5:11 pm-9:07 pm

1 stop4h 56m

$380

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 3/5

6:00 am-3:04 pm

1 stop8h 04m

Montreal Pierre Elliott Trudeau Intl

Mon 3/9

3:45 pm-11:44 pm

1 stop8h 59m

$381

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 3/10

10:00 am-6:55 pm

2 stops7h 55m

Ottawa

Tue 3/17

3:15 pm-10:59 pm

2 stops8h 44m

$385

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 5/13

1:00 pm-8:51 pm

1 stop6h 51m

Ottawa

Sun 5/17

2:25 pm-8:05 pm

1 stop6h 40m

$399

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 3/9

6:57 pm-1:45 pm

1 stop17h 48m

Montreal Pierre Elliott Trudeau Intl

Mon 3/16

3:45 pm-9:29 am

1 stop18h 44m

$476

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sun 5/3

6:27 am-3:27 pm

1 stop8h 00m

Montreal Pierre Elliott Trudeau Intl

Thu 5/7

12:30 pm-11:48 pm

1 stop12h 18m

$497

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sun 2/15

4:05 pm-10:48 pm

1 stop5h 43m

Québec City

Wed 2/18

10:55 am-3:29 pm

1 stop5h 34m

$682

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 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 $1,006. 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 $1,170.

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 $906. Try not to purchase tickets at noon because they tend to be around $1,067. 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

$442

Fastest flight time

2h 32m

Direct flights

Tue, Wed, Thu and Sun

Airports in Quebec

76 airports
The best one-way flight to Quebec from St. Louis in the past 72 hours is $442. The best round-trip flight deal from St. Louis to Quebec found on momondo in the last 72 hours is $676.
The fastest flight from St. Louis to Quebec takes 2h 32m
Direct flights go from St. Louis to Quebec on Tuesday, Wednesday, Thursday and Sunday. There are no airlines offering direct flights.
There are 76 airports in Quebec. From St. Louis there are direct flights to Montreal Pierre Elliott Trudeau Intl (YUL).
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 $193Free CancellationRating
7.1
10,656 reviews
Search Air Canada flights
DeltaPriceFrom $212Free CancellationRating
7.9
8,112 reviews
Search Delta flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
9,199 reviews
Search United Airlines flights
American AirlinesPriceFrom $348Free CancellationRating
7.2
11,189 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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