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Cheap flights from St. Louis to Quebec from $145

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 10/14. 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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0 bags

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Find the cheapest flights from St. Louis to Quebec

Cheap round-trip flights

American Airlines Logo
8:03 pm - 1:44 pmSTL-YQB
16h 41m1 stop
American Airlines Logo
4:14 pm - 3:37 pmYQB-STL
24h 23m1 stop
$346American Airlines
Find Deal
Thu, Sep 11 - Mon, Sep 15
American Airlines Logo
8:04 pm - 3:34 pmSTL-YQB
18h 30m2 stops
American Airlines Logo
4:14 pm - 11:54 pmYQB-STL
8h 40m1 stop
$356American Airlines
Find Deal
Tue, Oct 14 - Sat, Oct 18
Logo
10:57 am - 2:50 pmSTL-YUL
26h 53m1 stop
Logo
6:45 am - 10:02 amYUL-STL
28h 17m2 stops
$368
Find Deal
Thu, Oct 16 - Mon, Oct 27
United Airlines Logo
5:28 pm - 10:40 amSTL-YUL
16h 12m1 stop
United Airlines Logo
6:15 am - 2:27 pmYUL-STL
9h 12m1 stop
$388United Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
Logo
7:00 pm - 12:27 amSTL-YUL
28h 27m2 stops
Logo
6:45 am - 10:02 amYUL-STL
28h 17m1 stop
$389
Find Deal
Sat, Oct 11 - Mon, Oct 27
United Airlines Logo
5:28 pm - 10:40 amSTL-YUL
16h 12m1 stop
United Airlines Logo
6:15 am - 3:44 pmYUL-STL
10h 29m1 stop
$408United Airlines
Find Deal
Tue, Oct 14 - Thu, Oct 23
Delta Logo
1:35 pm - 8:37 amSTL-YUL
18h 02m1 stop
Delta Logo
7:30 pm - 11:38 amYUL-STL
17h 08m1 stop
$513Delta
Find Deal
Sat, Oct 11 - Fri, Oct 24
Air Canada Logo
4:05 pm - 10:43 pmSTL-YQB
5h 38m1 stop
Air Canada Logo
10:50 am - 3:29 pmYQB-STL
5h 39m1 stop
$828Air Canada
Find Deal
Wed, Dec 17 - Sun, Dec 21
Air Canada Logo
4:05 pm - 10:43 pmSTL-YQB
5h 38m1 stop
Air Canada Logo
9:15 am - 3:29 pmYQB-STL
7h 14m2 stops
$833Air Canada
Find Deal
Mon, Feb 9 - Thu, Feb 12
Delta Logo
3:36 pm - 12:22 amSTL-YOW
7h 46m2 stops
Delta Logo
5:55 am - 4:37 pmYOW-STL
11h 42m2 stops
$1,074Delta
Find Deal
Sun, Sep 14 - Sun, Sep 21

United Airlines flights from St. Louis to Quebec

Our best United Airlines deals on St. Louis to Quebec flight tickets
United Airlines
Oct 14
STL5:28 pmLambert-St Louis
16h 12m
1 stop
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
Oct 21
YUL6:15 amMontreal Pierre Elliott Trudeau Intl
9h 12m
1 stop
STL2:27 pmLambert-St Louis
$388
Find similar
United Airlines
Oct 14
STL5:28 pmLambert-St Louis
16h 12m
1 stop
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
Oct 23
YUL6:15 amMontreal Pierre Elliott Trudeau Intl
10h 29m
1 stop
STL3:44 pmLambert-St Louis
$408
Find similar
United Airlines
Sep 30
STL9:20 amLambert-St Louis
11h 50m
2 stops
YQB10:10 pmQuébec City
Oct 7
YQB4:55 pmQuébec City
18h 54m
2 stops
STL10:49 amLambert-St Louis
$416
Find similar

Delta flights from St. Louis to Quebec

Our best Delta deals on St. Louis to Quebec flight tickets
Delta
Oct 11
STL1:35 pmLambert-St Louis
18h 02m
1 stop
YUL8:37 amMontreal Pierre Elliott Trudeau Intl
Oct 24
YUL7:30 pmMontreal Pierre Elliott Trudeau Intl
17h 08m
1 stop
STL11:38 amLambert-St Louis
$513
Find similar
Delta
Aug 31
STL7:00 amLambert-St Louis
8h 07m
2 stops
YUL4:07 pmMontreal Pierre Elliott Trudeau Intl
Sep 5
YUL11:00 amMontreal Pierre Elliott Trudeau Intl
12h 02m
2 stops
STL10:02 pmLambert-St Louis
$777
Find similar
Delta
Sep 14
STL3:36 pmLambert-St Louis
7h 46m
2 stops
YOW12:22 amOttawa
Sep 21
YOW5:55 amOttawa
11h 42m
2 stops
STL4:37 pmLambert-St Louis
$1,074
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 August 18, 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. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Thu 9/11

8:03 pm-1:44 pm

1 stop16h 41m

Québec City

Mon 9/15

4:14 pm-3:37 pm

1 stop24h 23m

$346

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Tue 10/14

8:04 pm-3:34 pm

2 stops18h 30m

Québec City

Sat 10/18

4:14 pm-11:54 pm

1 stop8h 40m

$356

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 10/16

10:57 am-2:50 pm

1 stop26h 53m

Montreal Pierre Elliott Trudeau Intl

Mon 10/27

6:45 am-10:02 am

2 stops28h 17m

$368

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 10/14

5:28 pm-10:40 am

1 stop16h 12m

Montreal Pierre Elliott Trudeau Intl

Tue 10/21

6:15 am-2:27 pm

1 stop9h 12m

$388

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 10/11

7:00 pm-12:27 am

2 stops28h 27m

Montreal Pierre Elliott Trudeau Intl

Mon 10/27

6:45 am-10:02 am

1 stop28h 17m

$389

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 10/14

5:28 pm-10:40 am

1 stop16h 12m

Montreal Pierre Elliott Trudeau Intl

Thu 10/23

6:15 am-3:44 pm

1 stop10h 29m

$408

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Sat 10/11

1:35 pm-8:37 am

1 stop18h 02m

Montreal Pierre Elliott Trudeau Intl

Fri 10/24

7:30 pm-11:38 am

1 stop17h 08m

$513

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Wed 12/17

4:05 pm-10:43 pm

1 stop5h 38m

Québec City

Sun 12/21

10:50 am-3:29 pm

1 stop5h 39m

$828

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 2/9

4:05 pm-10:43 pm

1 stop5h 38m

Québec City

Thu 2/12

9:15 am-3:29 pm

2 stops7h 14m

$833

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sun 9/14

3:36 pm-12:22 am

2 stops7h 46m

Ottawa

Sun 9/21

5:55 am-4:37 pm

2 stops11h 42m

$1,074

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 Tuesday is the least expensive day to fly to Quebec. Tickets to fly out on this day can be as low as $1,029. 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 $1,232.

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 $1,122. 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

$145

Fastest flight time

2h 30m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Quebec

3 airports
The best one-way flight to Quebec from St. Louis in the past 72 hours is $145. The best round-trip flight deal from St. Louis to Quebec found on momondo in the last 72 hours is $346.
The fastest flight from St. Louis to Quebec takes 2h 30m
Direct flights go from St. Louis to Quebec on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: United Airlines and Air Canada.
There are 3 airports near Quebec: Ottawa (YOW), Montreal Pierre Elliott Trudeau Intl (YUL), Québec City (YQB)
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
9,992 reviews
Search Air Canada flights
United AirlinesPriceFrom $246Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
DeltaPriceFrom $255Free CancellationRating
8.0
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $348Free CancellationRating
7.2
10,000 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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