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Cheap flights from Quebec to St. Louis from $284

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 12/25. 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 Quebec to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
2:25 pm - 6:25 pmYOW-STL
5h 00m1 stop
Air Canada Logo
1:30 pm - 8:15 pmSTL-YOW
5h 45m1 stop
$294Air Canada
Find Deal
Fri, May 8 - Sun, May 10
Air Canada Logo
2:25 pm - 6:25 pmYOW-STL
5h 00m1 stop
Air Canada Logo
1:30 pm - 8:15 pmSTL-YOW
5h 45m1 stop
$295Air Canada
Find Deal
Thu, May 7 - Sun, May 10
United Airlines Logo
5:25 pm - 9:47 pmYOW-STL
5h 22m1 stop
United Airlines Logo
7:45 am - 1:45 pmSTL-YOW
5h 00m1 stop
$299United Airlines
Find Deal
Tue, Apr 7 - Wed, Apr 8
United Airlines Logo
10:35 am - 10:59 pmYOW-STL
13h 24m1 stop
United Airlines Logo
7:45 am - 1:45 pmSTL-YOW
5h 00m1 stop
$300United Airlines
Find Deal
Tue, Apr 7 - Wed, Apr 8
Multiple Airlines Logo
5:15 am - 2:18 pmYOW-STL
10h 03m2 stops
Multiple Airlines Logo
1:30 pm - 9:15 pmSTL-YOW
6h 45m1 stop
$359Multiple Airlines
Find Deal
Thu, May 7 - Sun, May 10
American Airlines Logo
12:30 pm - 9:48 pmYUL-STL
10h 18m1 stop
American Airlines Logo
11:14 am - 11:15 amSTL-YUL
23h 01m1 stop
$390American Airlines
Find Deal
Tue, Apr 7 - Wed, Apr 8
American Airlines Logo
12:30 pm - 9:48 pmYUL-STL
10h 18m1 stop
American Airlines Logo
11:14 am - 11:15 amSTL-YUL
23h 01m1 stop
$392American Airlines
Find Deal
Tue, Apr 7 - Wed, Apr 8
Multiple Airlines Logo
8:00 am - 9:47 amYUL-STL
26h 47m2 stops
Multiple Airlines Logo
2:47 pm - 4:23 pmSTL-YUL
24h 36m1 stop
$430Multiple Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Delta Logo
9:35 am - 3:52 pmYUL-STL
7h 17m1 stop
Delta Logo
5:34 pm - 11:47 pmSTL-YUL
5h 13m1 stop
$523Delta
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Thu, Dec 4 - Thu, Dec 11
Delta Logo
6:15 pm - 11:38 pmYUL-STL
6h 23m1 stop
Delta Logo
9:00 am - 5:07 pmSTL-YUL
7h 07m1 stop
$550Delta
Find Deal
Fri, May 8 - Sun, May 10

Air Canada flights from Quebec to St. Louis

Our best Air Canada deals on Quebec to St. Louis flight tickets
Air Canada
May 8
YOW2:25 pmOttawa
5h 00m
1 stop
STL6:25 pmLambert-St Louis
May 10
STL1:30 pmLambert-St Louis
5h 45m
1 stop
YOW8:15 pmOttawa
$294
Find similar
Air Canada
May 7
YOW2:25 pmOttawa
5h 00m
1 stop
STL6:25 pmLambert-St Louis
May 10
STL1:30 pmLambert-St Louis
5h 45m
1 stop
YOW8:15 pmOttawa
$295
Find similar
Air Canada
Apr 7
YOW5:25 pmOttawa
5h 22m
1 stop
STL9:47 pmLambert-St Louis
Apr 8
STL7:45 amLambert-St Louis
13h 31m
2 stops
YOW10:16 pmOttawa
$353
Find similar

United Airlines flights from Quebec to St. Louis

Our best United Airlines deals on Quebec to St. Louis flight tickets
United Airlines
Apr 7
YOW5:25 pmOttawa
5h 22m
1 stop
STL9:47 pmLambert-St Louis
Apr 8
STL7:45 amLambert-St Louis
5h 00m
1 stop
YOW1:45 pmOttawa
$299
Find similar
United Airlines
Apr 7
YOW10:35 amOttawa
13h 24m
1 stop
STL10:59 pmLambert-St Louis
Apr 8
STL7:45 amLambert-St Louis
5h 00m
1 stop
YOW1:45 pmOttawa
$300
Find similar
United Airlines
Apr 7
YOW2:05 pmOttawa
8h 42m
2 stops
STL9:47 pmLambert-St Louis
Apr 8
STL7:45 amLambert-St Louis
5h 00m
1 stop
YOW1:45 pmOttawa
$358
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 November 10, 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

Fri 5/8

2:25 pm-6:25 pm

1 stop5h 00m

Lambert-St Louis

Sun 5/10

1:30 pm-8:15 pm

1 stop5h 45m

$294

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 5/7

2:25 pm-6:25 pm

1 stop5h 00m

Lambert-St Louis

Sun 5/10

1:30 pm-8:15 pm

1 stop5h 45m

$295

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 4/7

5:25 pm-9:47 pm

1 stop5h 22m

Lambert-St Louis

Wed 4/8

7:45 am-1:45 pm

1 stop5h 00m

$299

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 4/7

10:35 am-10:59 pm

1 stop13h 24m

Lambert-St Louis

Wed 4/8

7:45 am-1:45 pm

1 stop5h 00m

$300

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 5/7

5:15 am-2:18 pm

2 stops10h 03m

Lambert-St Louis

Sun 5/10

1:30 pm-9:15 pm

1 stop6h 45m

$359

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 4/7

12:30 pm-9:48 pm

1 stop10h 18m

Lambert-St Louis

Wed 4/8

11:14 am-11:15 am

1 stop23h 01m

$390

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 4/7

12:30 pm-9:48 pm

1 stop10h 18m

Lambert-St Louis

Wed 4/8

11:14 am-11:15 am

1 stop23h 01m

$392

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 12/4

8:00 am-9:47 am

2 stops26h 47m

Lambert-St Louis

Thu 12/11

2:47 pm-4:23 pm

1 stop24h 36m

$430

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 12/4

9:35 am-3:52 pm

1 stop7h 17m

Lambert-St Louis

Thu 12/11

5:34 pm-11:47 pm

1 stop5h 13m

$523

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 5/8

6:15 pm-11:38 pm

1 stop6h 23m

Lambert-St Louis

Sun 5/10

9:00 am-5:07 pm

1 stop7h 07m

$550

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 $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 time of day to depart on your flight to St. Louis?

Flying to St. Louis from Quebec in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $435 when looking at flights departing in the afternoon. 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 55m

Direct flights

Sat

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 Saturday. 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
10,429 reviews
Search Air Canada flights
DeltaPriceFrom $452Free CancellationRating
7.9
8,004 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
Florissant
Maryland Heights
O'Fallon
Wentzville
Fenton
Collinsville
St. Peters
Alton
Farmington
Festus
Glencoe
Edwardsville
Clayton
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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