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Cheap flights from Quebec to St. Louis from $165

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 3/11. 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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Find the cheapest flights from Quebec to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:48 pm - 11:59 pm
YOW
-
STL
7h 11m
1 stop
United Airlines Logo
7:00 am - 1:34 pm
STL
-
YOW
5h 34m
1 stop
$301United Airlines
Mo, Feb 23 - Mi, Feb 25
United Airlines Logo
5:48 pm - 11:59 pm
YOW
-
STL
7h 11m
1 stop
United Airlines Logo
7:00 am - 1:34 pm
STL
-
YOW
5h 34m
1 stop
$302United Airlines
Mo, Feb 23 - Mi, Feb 25
Air Canada Logo
7:00 am - 12:21 pm
YOW
-
STL
6h 21m
1 stop
Air Canada Logo
7:25 am - 3:10 pm
STL
-
YOW
6h 45m
1 stop
$309Air Canada
Sa, Jun 27 - So, Jun 28
American Airlines Logo
12:30 pm - 10:17 pm
YUL
-
STL
10h 47m
1 stop
American Airlines Logo
5:21 pm - 11:44 am
STL
-
YUL
17h 23m
1 stop
$311American Airlines
Mo, Apr 20 - Sa, Apr 25
United Airlines Logo
5:48 pm - 11:59 pm
YOW
-
STL
7h 11m
1 stop
United Airlines Logo
7:00 am - 1:34 pm
STL
-
YOW
5h 34m
1 stop
$319United Airlines
Mo, Feb 23 - Mi, Feb 25
American Airlines Logo
12:30 pm - 10:17 pm
YUL
-
STL
10h 47m
1 stop
American Airlines Logo
5:21 pm - 11:44 am
STL
-
YUL
17h 23m
1 stop
$349American Airlines
Mo, Apr 20 - Sa, Apr 25
United Airlines Logo
5:48 pm - 11:59 pm
YOW
-
STL
7h 11m
1 stop
United Airlines Logo
7:00 am - 5:18 pm
STL
-
YOW
9h 18m
2 stops
$363United Airlines
Mo, Feb 23 - Mi, Feb 25
United Airlines Logo
5:48 pm - 11:59 pm
YOW
-
STL
7h 11m
1 stop
United Airlines Logo
7:41 am - 3:23 pm
STL
-
YOW
6h 42m
2 stops
$364United Airlines
Mo, Feb 23 - Mi, Feb 25
Air Canada Logo
9:55 am - 3:46 pm
YOW
-
STL
6h 51m
2 stops
Air Canada Logo
1:13 pm - 9:36 pm
STL
-
YOW
7h 23m
1 stop
$380Air Canada
Sa, Jun 27 - So, Jun 28
Multiple Airlines Logo
5:10 pm - 6:50 am
YUL
-
STL
14h 40m
2 stops
Multiple Airlines Logo
4:55 pm - 12:30 am
STL
-
YUL
30h 35m
1 stop
$427Multiple Airlines
Fr, Apr 17 - Mi, Apr 22

Delta flights from Quebec to St. Louis

Our best Delta deals on Quebec to St. Louis flight tickets
Delta
Mar 26
YUL6:45 pmMontreal Pierre Elliott Trudeau Intl
6h 13m
1 stop
STL11:58 pmLambert-St Louis
Apr 2
STL6:32 amLambert-St Louis
4h 27m
1 stop
YUL11:59 amMontreal Pierre Elliott Trudeau Intl
$439
Delta
Mar 26
YOW5:40 amOttawa
11h 52m
2 stops
STL4:32 pmLambert-St Louis
Mar 30
STL4:21 pmLambert-St Louis
7h 18m
2 stops
YOW12:39 amOttawa
$470
Delta
May 10
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
4h 26m
1 stop
STL9:26 amLambert-St Louis
May 16
STL5:47 pmLambert-St Louis
4h 54m
1 stop
YUL11:41 pmMontreal Pierre Elliott Trudeau Intl
$473

United Airlines flights from Quebec to St. Louis

Our best United Airlines deals on Quebec to St. Louis flight tickets
United Airlines
Feb 23
YOW5:48 pmOttawa
7h 11m
1 stop
STL11:59 pmLambert-St Louis
Feb 25
STL7:00 amLambert-St Louis
5h 34m
1 stop
YOW1:34 pmOttawa
$301
United Airlines
Feb 23
YOW5:48 pmOttawa
7h 11m
1 stop
STL11:59 pmLambert-St Louis
Feb 25
STL7:00 amLambert-St Louis
5h 34m
1 stop
YOW1:34 pmOttawa
$302
United Airlines
Feb 23
YOW5:48 pmOttawa
7h 11m
1 stop
STL11:59 pmLambert-St Louis
Feb 25
STL7:00 amLambert-St Louis
5h 34m
1 stop
YOW1:34 pmOttawa
$319

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 Februar 10, 2026.
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

Mo 2/23

5:48 pm-11:59 pm

1 stop7h 11m

Lambert-St Louis

Mi 2/25

7:00 am-1:34 pm

1 stop5h 34m

$301

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mo 2/23

5:48 pm-11:59 pm

1 stop7h 11m

Lambert-St Louis

Mi 2/25

7:00 am-1:34 pm

1 stop5h 34m

$302

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sa 6/27

7:00 am-12:21 pm

1 stop6h 21m

Lambert-St Louis

So 6/28

7:25 am-3:10 pm

1 stop6h 45m

$309

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mo 4/20

12:30 pm-10:17 pm

1 stop10h 47m

Lambert-St Louis

Sa 4/25

5:21 pm-11:44 am

1 stop17h 23m

$311

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mo 2/23

5:48 pm-11:59 pm

1 stop7h 11m

Lambert-St Louis

Mi 2/25

7:00 am-1:34 pm

1 stop5h 34m

$319

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mo 4/20

12:30 pm-10:17 pm

1 stop10h 47m

Lambert-St Louis

Sa 4/25

5:21 pm-11:44 am

1 stop17h 23m

$349

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mo 2/23

5:48 pm-11:59 pm

1 stop7h 11m

Lambert-St Louis

Mi 2/25

7:00 am-5:18 pm

2 stops9h 18m

$363

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mo 2/23

5:48 pm-11:59 pm

1 stop7h 11m

Lambert-St Louis

Mi 2/25

7:41 am-3:23 pm

2 stops6h 42m

$364

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sa 6/27

9:55 am-3:46 pm

2 stops6h 51m

Lambert-St Louis

So 6/28

1:13 pm-9:36 pm

1 stop7h 23m

$380

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fr 4/17

5:10 pm-6:50 am

2 stops14h 40m

Lambert-St Louis

Mi 4/22

4:55 pm-12:30 am

1 stop30h 35m

$427

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 September is another great option to travel to St. Louis, with average flight prices from Quebec averaging around $421.

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 $246. 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 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 35% 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 55m

Direct flights

Mon, Tue, Wed, Fri and Sun

Airports in St. Louis

1 airport
The fastest flight from Quebec to St. Louis takes 2h 55m
Direct flights go from Quebec to St. Louis on Monday, Tuesday, Wednesday, Friday and Sunday. There are no airlines offering direct flights.
There is 1 airport in St. Louis. From Quebec there are direct flights to 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
10,701 reviews
Search Air Canada flights
DeltaPriceFrom $452Free CancellationRating
7.9
8,178 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
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
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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