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Cheap flights from Quebec to St. Louis from $179

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 1/23. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
9:30 am - 10:33 pm
YOW
-
STL
14h 03m1 stop
Multiple Airlines Logo
5:11 pm - 5:13 pm
STL
-
YOW
23h 02m1 stop
$291Multiple Airlines
Thu, Jan 8 - Sun, Jan 11
United Airlines Logo
5:11 pm - 10:58 pm
YOW
-
STL
6h 47m1 stop
United Airlines Logo
3:11 pm - 9:18 pm
STL
-
YOW
5h 07m1 stop
$303United Airlines
Thu, Jan 8 - Mon, Jan 12
United Airlines Logo
5:11 pm - 10:58 pm
YOW
-
STL
6h 47m1 stop
United Airlines Logo
7:00 am - 1:32 pm
STL
-
YOW
5h 32m1 stop
$304United Airlines
Thu, Jan 8 - Mon, Jan 12
Multiple Airlines Logo
4:20 pm - 7:50 am
YOW
-
STL
16h 30m1 stop
Multiple Airlines Logo
9:35 am - 11:58 pm
STL
-
YOW
13h 23m1 stop
$316Multiple Airlines
Thu, Jan 8 - Sun, Jan 11
Multiple Airlines Logo
9:30 am - 10:33 pm
YOW
-
STL
14h 03m1 stop
Multiple Airlines Logo
3:43 pm - 5:15 pm
STL
-
YOW
24h 32m2 stops
$340Multiple Airlines
Thu, Jan 8 - Sun, Jan 11
Air Canada Logo
9:15 am - 3:29 pm
YOW
-
STL
7h 14m1 stop
Air Canada Logo
3:11 pm - 1:38 am
STL
-
YOW
9h 27m2 stops
$364Air Canada
Thu, Jan 8 - Mon, Jan 12
American Airlines Logo
3:50 pm - 10:20 am
YUL
-
STL
19h 30m1 stop
American Airlines Logo
6:00 am - 3:08 pm
STL
-
YUL
8h 08m1 stop
$373American Airlines
Wed, Jan 21 - Wed, Feb 4
American Airlines Logo
7:30 am - 6:14 pm
YUL
-
STL
11h 44m2 stops
American Airlines Logo
6:00 am - 3:08 pm
STL
-
YUL
8h 08m1 stop
$420American Airlines
Wed, Jan 21 - Wed, Feb 4
Delta Logo
7:30 pm - 12:36 pm
YUL
-
STL
18h 06m1 stop
Delta Logo
5:56 pm - 11:12 pm
STL
-
YUL
4h 16m1 stop
$493Delta
Fri, Jan 30 - Mon, Feb 2
Delta Logo
7:30 pm - 12:36 pm
YUL
-
STL
18h 06m1 stop
Delta Logo
6:35 am - 12:12 pm
STL
-
YUL
4h 37m1 stop
$506Delta
Fri, Jan 30 - Mon, Feb 2

Air Canada flights from Quebec to St. Louis

Our best Air Canada deals on Quebec to St. Louis flight tickets
Air Canada
Jan 8
YOW9:15 amOttawa
7h 14m
1 stop
STL3:29 pmLambert-St Louis
Jan 12
STL3:11 pmLambert-St Louis
9h 27m
2 stops
YOW1:38 amOttawa
$364
Find similar
Air Canada
Jan 8
YOW5:00 amOttawa
8h 29m
2 stops
STL12:29 pmLambert-St Louis
Jan 12
STL4:49 pmLambert-St Louis
7h 49m
2 stops
YOW1:38 amOttawa
$491
Find similar
Air Canada
Jun 5
YUL9:45 amMontreal Pierre Elliott Trudeau Intl
11h 19m
2 stops
STL8:04 pmLambert-St Louis
Jun 8
STL1:00 pmLambert-St Louis
2h 35m
YUL4:35 pmMontreal Pierre Elliott Trudeau Intl
$704
Find similar

WestJet flights from Quebec to St. Louis

Our best WestJet deals on Quebec to St. Louis flight tickets
WestJet
May 10
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
5h 30m
1 stop
STL11:30 amLambert-St Louis
May 16
STL1:15 pmLambert-St Louis
10h 25m
2 stops
YUL12:40 amMontreal Pierre Elliott Trudeau Intl
$776
Find similar
WestJet
Jun 5
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
7h 32m
2 stops
STL1:17 pmLambert-St Louis
Jun 8
STL1:30 pmLambert-St Louis
10h 10m
2 stops
YUL12:40 amMontreal Pierre Elliott Trudeau Intl
$862
Find similar
WestJet
May 10
YUL6:45 amMontreal Pierre Elliott Trudeau Intl
9h 58m
2 stops
STL3:43 pmLambert-St Louis
May 16
STL1:15 pmLambert-St Louis
10h 25m
2 stops
YUL12:40 amMontreal Pierre Elliott Trudeau Intl
$870
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 December 11, 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

Thu 1/8

9:30 am-10:33 pm

1 stop14h 03m

Lambert-St Louis

Sun 1/11

5:11 pm-5:13 pm

1 stop23h 02m

$291

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 1/8

5:11 pm-10:58 pm

1 stop6h 47m

Lambert-St Louis

Mon 1/12

3:11 pm-9:18 pm

1 stop5h 07m

$303

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 1/8

5:11 pm-10:58 pm

1 stop6h 47m

Lambert-St Louis

Mon 1/12

7:00 am-1:32 pm

1 stop5h 32m

$304

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 1/8

4:20 pm-7:50 am

1 stop16h 30m

Lambert-St Louis

Sun 1/11

9:35 am-11:58 pm

1 stop13h 23m

$316

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 1/8

9:30 am-10:33 pm

1 stop14h 03m

Lambert-St Louis

Sun 1/11

3:43 pm-5:15 pm

2 stops24h 32m

$340

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 1/8

9:15 am-3:29 pm

1 stop7h 14m

Lambert-St Louis

Mon 1/12

3:11 pm-1:38 am

2 stops9h 27m

$364

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 1/21

3:50 pm-10:20 am

1 stop19h 30m

Lambert-St Louis

Wed 2/4

6:00 am-3:08 pm

1 stop8h 08m

$373

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 1/21

7:30 am-6:14 pm

2 stops11h 44m

Lambert-St Louis

Wed 2/4

6:00 am-3:08 pm

1 stop8h 08m

$420

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 1/30

7:30 pm-12:36 pm

1 stop18h 06m

Lambert-St Louis

Mon 2/2

5:56 pm-11:12 pm

1 stop4h 16m

$493

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 1/30

7:30 pm-12:36 pm

1 stop18h 06m

Lambert-St Louis

Mon 2/2

6:35 am-12:12 pm

1 stop4h 37m

$506

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 $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

Mon and 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 Monday and Saturday. 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
10,514 reviews
Search Air Canada flights
DeltaPriceFrom $452Free CancellationRating
7.9
8,005 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
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Farmington
Festus
Clayton
Glencoe
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.

An easier way to manage your St. Louis trip

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