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Cheap flights from St. Louis to Quebec from $214

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 8/22. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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 - 4:50 pm
STL
-
YUL
9h 50m
1 stop
American Airlines Logo
5:34 pm - 8:24 am
YUL
-
STL
15h 50m
1 stop
$476American Airlines
Mon, Aug 31 - Fri, Sep 4
American Airlines Logo
7:29 am - 4:52 pm
STL
-
YUL
8h 23m
1 stop
American Airlines Logo
12:30 pm - 11:58 pm
YUL
-
STL
12h 28m
1 stop
$485American Airlines
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
5:00 am - 4:52 pm
STL
-
YUL
10h 52m
1 stop
American Airlines Logo
5:34 pm - 10:51 am
YUL
-
STL
18h 17m
1 stop
$486American Airlines
Sat, Oct 17 - Mon, Oct 26
Multiple Airlines Logo
7:58 pm - 11:45 pm
STL
-
YUL
26h 47m
2 stops
Multiple Airlines Logo
2:46 pm - 11:58 pm
YUL
-
STL
10h 12m
1 stop
$563Multiple Airlines
Mon, Aug 31 - Fri, Sep 4
Multiple Airlines Logo
6:25 pm - 11:30 pm
STL
-
YUL
4h 05m
1 stop
Multiple Airlines Logo
7:20 pm - 5:22 pm
YUL
-
STL
23h 02m
2 stops
$578Multiple Airlines
Tue, Aug 18 - Sat, Aug 22
Multiple Airlines Logo
6:17 pm - 2:08 pm
STL
-
YUL
18h 51m
2 stops
Multiple Airlines Logo
7:00 am - 11:46 am
YUL
-
STL
5h 46m
1 stop
$580Multiple Airlines
Fri, Aug 28 - Sun, Aug 30
United Airlines Logo
8:00 am - 10:40 am
STL
-
YUL
25h 40m
1 stop
United Airlines Logo
9:45 am - 9:21 pm
YUL
-
STL
12h 36m
1 stop
$592United Airlines
Tue, Oct 13 - Sat, Oct 17
Air Canada Logo
12:10 pm - 3:42 pm
STL
-
YUL
2h 32mnonstop
Air Canada Logo
4:55 pm - 6:42 pm
YUL
-
STL
2h 47mnonstop
$621Air Canada
Thu, Aug 20 - Sun, Aug 23
Air Canada Logo
12:10 pm - 3:42 pm
STL
-
YUL
2h 32mnonstop
Air Canada Logo
4:55 pm - 6:42 pm
YUL
-
STL
2h 47mnonstop
$623Air Canada
Thu, Aug 20 - Sun, Aug 23
United Airlines Logo
9:37 am - 9:01 pm
STL
-
YUL
10h 24m
1 stop
United Airlines Logo
4:45 pm - 8:57 am
YUL
-
STL
17h 12m
1 stop
$639United Airlines
Thu, Dec 31 - Wed, Jan 6

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American Airlines flights from St. Louis to Quebec

Our best American Airlines deals on St. Louis to Quebec flight tickets
American Airlines
Aug 31
STL6:00 amLambert-St Louis
9h 50m
1 stop
YUL4:50 pmMontreal Pierre Elliott Trudeau Intl
Sep 4
YUL5:34 pmMontreal Pierre Elliott Trudeau Intl
15h 50m
1 stop
STL8:24 amLambert-St Louis
$476
American Airlines
Oct 17
STL7:29 amLambert-St Louis
8h 23m
1 stop
YUL4:52 pmMontreal Pierre Elliott Trudeau Intl
Oct 24
YUL12:30 pmMontreal Pierre Elliott Trudeau Intl
12h 28m
1 stop
STL11:58 pmLambert-St Louis
$485
American Airlines
Oct 17
STL5:00 amLambert-St Louis
10h 52m
1 stop
YUL4:52 pmMontreal Pierre Elliott Trudeau Intl
Oct 26
YUL5:34 pmMontreal Pierre Elliott Trudeau Intl
18h 17m
1 stop
STL10:51 amLambert-St Louis
$486

United Airlines flights from St. Louis to Quebec

Our best United Airlines deals on St. Louis to Quebec flight tickets
United Airlines
Sep 30
STL8:00 amLambert-St Louis
8h 30m
1 stop
YUL5:30 pmMontreal Pierre Elliott Trudeau Intl
Oct 7
YUL9:45 amMontreal Pierre Elliott Trudeau Intl
14h 14m
1 stop
STL10:59 pmLambert-St Louis
$573
United Airlines
Oct 13
STL8:00 amLambert-St Louis
25h 40m
1 stop
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
Oct 17
YUL9:45 amMontreal Pierre Elliott Trudeau Intl
12h 36m
1 stop
STL9:21 pmLambert-St Louis
$592
United Airlines
Oct 1
STL8:00 amLambert-St Louis
8h 30m
1 stop
YUL5:30 pmMontreal Pierre Elliott Trudeau Intl
Oct 13
YUL1:15 pmMontreal Pierre Elliott Trudeau Intl
9h 06m
1 stop
STL9:21 pmLambert-St Louis
$603

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 July 28, 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

Cheapest round-trip

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 8/31

6:00 am-4:50 pm

1 stop9h 50m

Montreal Pierre Elliott Trudeau Intl

Fri 9/4

5:34 pm-8:24 am

1 stop15h 50m

$476

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 10/17

7:29 am-4:52 pm

1 stop8h 23m

Montreal Pierre Elliott Trudeau Intl

Sat 10/24

12:30 pm-11:58 pm

1 stop12h 28m

$485

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 10/17

5:00 am-4:52 pm

1 stop10h 52m

Montreal Pierre Elliott Trudeau Intl

Mon 10/26

5:34 pm-10:51 am

1 stop18h 17m

$486

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 8/31

7:58 pm-11:45 pm

2 stops26h 47m

Montreal Pierre Elliott Trudeau Intl

Fri 9/4

2:46 pm-11:58 pm

1 stop10h 12m

$563

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 8/18

6:25 pm-11:30 pm

1 stop4h 05m

Montreal Pierre Elliott Trudeau Intl

Sat 8/22

7:20 pm-5:22 pm

2 stops23h 02m

$578

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Fri 8/28

6:17 pm-2:08 pm

2 stops18h 51m

Montreal Pierre Elliott Trudeau Intl

Sun 8/30

7:00 am-11:46 am

1 stop5h 46m

$580

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 10/13

8:00 am-10:40 am

1 stop25h 40m

Montreal Pierre Elliott Trudeau Intl

Sat 10/17

9:45 am-9:21 pm

1 stop12h 36m

$592
Quickest round-trip

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 8/20

12:10 pm-3:42 pm

Nonstop2h 32m

Montreal Pierre Elliott Trudeau Intl

Sun 8/23

4:55 pm-6:42 pm

Nonstop2h 47m

$621

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 8/20

12:10 pm-3:42 pm

Nonstop2h 32m

Montreal Pierre Elliott Trudeau Intl

Sun 8/23

4:55 pm-6:42 pm

Nonstop2h 47m

$623

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 12/31

9:37 am-9:01 pm

1 stop10h 24m

Montreal Pierre Elliott Trudeau Intl

Wed 1/6

4:45 pm-8:57 am

1 stop17h 12m

$639

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 February, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $533.

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 $941. 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 $1,185.

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 $1,002. Try not to purchase tickets at noon because they tend to be around $1,042. 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 17% 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

$413

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 $413. The best round-trip flight deal from St. Louis to Quebec found on momondo in the last 72 hours is $879.
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?

  • 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 $257Free CancellationRating
7.1
11,401 reviews
Search Air Canada flights
United AirlinesPriceFrom $296Free CancellationRating
7.4
10,048 reviews
Search United Airlines flights
American AirlinesPriceFrom $368Free CancellationRating
7.1
11,839 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

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