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Cheap flights from Quebec to St. Louis from $204

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Quebec to St. Louis departing on 11/2. 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 Quebec to St. Louis

Cheap round-trip flights

United Airlines Logo
11:10 am - 10:56 pmYOW-STL
12h 46m1 stop
United Airlines Logo
7:00 am - 1:34 pmSTL-YOW
5h 34m1 stop
$296United Airlines
Find Deal
Tue, Mar 3 - Wed, Mar 4
American Airlines Logo
3:49 pm - 11:56 pmYUL-STL
9h 07m1 stop
American Airlines Logo
5:15 am - 3:10 pmSTL-YUL
8h 55m1 stop
$348American Airlines
Find Deal
Tue, Dec 2 - Mon, Dec 8
Air Canada Logo
10:20 am - 3:29 pmYOW-STL
6h 09m1 stop
Air Canada Logo
6:43 pm - 10:26 amSTL-YOW
14h 43m1 stop
$353Air Canada
Find Deal
Sun, Nov 9 - Sun, Nov 16
Multiple Airlines Logo
6:35 pm - 10:16 amYUL-STL
16h 41m2 stops
Multiple Airlines Logo
10:57 am - 3:10 pmSTL-YUL
27h 13m1 stop
$409Multiple Airlines
Find Deal
Thu, Oct 23 - Thu, Oct 30
Multiple Airlines Logo
6:45 am - 11:01 amYUL-STL
29h 16m1 stop
Multiple Airlines Logo
4:56 pm - 12:30 amSTL-YUL
54h 34m2 stops
$421Multiple Airlines
Find Deal
Wed, Nov 5 - Fri, Nov 7
Delta Logo
7:30 pm - 8:13 amYUL-STL
13h 43m1 stop
Delta Logo
9:35 am - 6:40 pmSTL-YUL
8h 05m1 stop
$453Delta
Find Deal
Wed, Nov 5 - Wed, Nov 12
Delta Logo
9:28 am - 8:08 pmYUL-STL
11h 40m1 stop
Delta Logo
1:35 pm - 8:36 amSTL-YUL
18h 01m1 stop
$464Delta
Find Deal
Wed, Nov 5 - Wed, Nov 12
Air Canada Logo
8:50 am - 3:29 pmYUL-STL
7h 39m2 stops
Air Canada Logo
4:05 pm - 11:40 amSTL-YUL
18h 35m2 stops
$595Air Canada
Find Deal
Wed, Nov 5 - Fri, Nov 7
WestJet Logo
6:45 am - 4:10 pmYUL-STL
10h 25m2 stops
WestJet Logo
1:55 pm - 12:43 amSTL-YUL
9h 48m2 stops
$639WestJet
Find Deal
Wed, Nov 5 - Wed, Nov 12
WestJet Logo
6:00 am - 9:37 amYUL-STL
4h 37m1 stop
WestJet Logo
1:55 pm - 12:43 amSTL-YUL
9h 48m2 stops
$653WestJet
Find Deal
Wed, Nov 5 - Wed, Nov 12

Air Canada flights from Quebec to St. Louis

Our best Air Canada deals on Quebec to St. Louis flight tickets
Air Canada
Nov 9
YOW10:20 amOttawa
6h 09m
1 stop
STL3:29 pmLambert-St Louis
Nov 16
STL6:43 pmLambert-St Louis
14h 43m
1 stop
YOW10:26 amOttawa
$353
Find similar
Air Canada
Nov 5
YUL8:50 amMontreal Pierre Elliott Trudeau Intl
7h 39m
2 stops
STL3:29 pmLambert-St Louis
Nov 7
STL4:05 pmLambert-St Louis
18h 35m
2 stops
YUL11:40 amMontreal Pierre Elliott Trudeau Intl
$595
Find similar
Air Canada
Oct 7
YUL6:10 pmMontreal Pierre Elliott Trudeau Intl
2h 47m
STL7:57 pmLambert-St Louis
Oct 10
STL4:05 pmLambert-St Louis
4h 35m
1 stop
YUL9:40 pmMontreal Pierre Elliott Trudeau Intl
$1,165
Find similar

Delta flights from Quebec to St. Louis

Our best Delta deals on Quebec to St. Louis flight tickets
Delta
Nov 5
YUL7:30 pmMontreal Pierre Elliott Trudeau Intl
13h 43m
1 stop
STL8:13 amLambert-St Louis
Nov 12
STL9:35 amLambert-St Louis
8h 05m
1 stop
YUL6:40 pmMontreal Pierre Elliott Trudeau Intl
$453
Find similar
Delta
Nov 5
YUL9:28 amMontreal Pierre Elliott Trudeau Intl
11h 40m
1 stop
STL8:08 pmLambert-St Louis
Nov 12
STL1:35 pmLambert-St Louis
18h 01m
1 stop
YUL8:36 amMontreal Pierre Elliott Trudeau Intl
$464
Find similar
Delta
Oct 22
YUL7:30 pmMontreal Pierre Elliott Trudeau Intl
15h 56m
2 stops
STL10:26 amLambert-St Louis
Oct 29
STL6:40 amLambert-St Louis
4h 22m
1 stop
YUL12:02 pmMontreal Pierre Elliott Trudeau Intl
$528
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Quebec to St. Louis 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 September 26, 2025.
Use the filters below to find and compare flights from Quebec to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 3/3

11:10 am-10:56 pm

1 stop12h 46m

Lambert-St Louis

Wed 3/4

7:00 am-1:34 pm

1 stop5h 34m

$296

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 12/2

3:49 pm-11:56 pm

1 stop9h 07m

Lambert-St Louis

Mon 12/8

5:15 am-3:10 pm

1 stop8h 55m

$348

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 11/9

10:20 am-3:29 pm

1 stop6h 09m

Lambert-St Louis

Sun 11/16

6:43 pm-10:26 am

1 stop14h 43m

$353

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/23

6:35 pm-10:16 am

2 stops16h 41m

Lambert-St Louis

Thu 10/30

10:57 am-3:10 pm

1 stop27h 13m

$409

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 11/5

6:45 am-11:01 am

1 stop29h 16m

Lambert-St Louis

Fri 11/7

4:56 pm-12:30 am

2 stops54h 34m

$421

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 11/5

7:30 pm-8:13 am

1 stop13h 43m

Lambert-St Louis

Wed 11/12

9:35 am-6:40 pm

1 stop8h 05m

$453

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 11/5

9:28 am-8:08 pm

1 stop11h 40m

Lambert-St Louis

Wed 11/12

1:35 pm-8:36 am

1 stop18h 01m

$464

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 11/5

8:50 am-3:29 pm

2 stops7h 39m

Lambert-St Louis

Fri 11/7

4:05 pm-11:40 am

2 stops18h 35m

$595

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 11/5

6:45 am-4:10 pm

2 stops10h 25m

Lambert-St Louis

Wed 11/12

1:55 pm-12:43 am

2 stops9h 48m

$639

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 11/5

6:00 am-9:37 am

1 stop4h 37m

Lambert-St Louis

Wed 11/12

1:55 pm-12:43 am

2 stops9h 48m

$653

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 St. Louis from

How to get the cheapest flight ticket from Quebec to St. Louis

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 St. Louis?

In general, July is the cheapest month to fly from Quebec to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $286. The month of February is another great option to travel to St. Louis, with average flight prices from Quebec averaging around $455.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $256. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $609. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Quebec in the evening is the least expensive time of day to depart. momondo users have found prices as low as $282 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $593 per ticket.

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

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

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

There are 3 cabin classes available to choose from on Quebec to Lambert-St Louis 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 Quebec to St. Louis flights?

You could potentially save up to 40% on your flight if you consider stops on a Quebec to St. Louis flight.

Cheap Quebec to St. Louis flight deals and tips

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

Fastest flight time

2h 47m

Direct flights

Wed, Fri and Sun

Airports in St. Louis

1 airport
The fastest flight from Quebec to St. Louis takes 2h 47m
Direct flights go from Quebec to St. Louis on Wednesday, Friday and Sunday. There are no airlines offering direct flights.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Quebec to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lambert-St Louis Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Quebec to St. Louis?

Best airlines flying from Quebec to St. Louis

Compare and see reviews for airlines that fly from Quebec to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $435Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
DeltaPriceFrom $452Free CancellationRating
7.9
7,973 reviews
Search Delta flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Florissant
Maryland Heights
O'Fallon
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Quebec to St. Louis. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Quebec with this policy.

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

momondo helps you find the best flight between Quebec and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Quebec to St. Louis right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Quebec to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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