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Cheap flights from Quebec to St. Louis from $184

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 5/6. 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
1 adult, Economy, 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.
United Airlines Logo
5:50 pm - 11:35 pm
YOW
-
STL
6h 45m
1 stop
United Airlines Logo
9:23 am - 9:35 pm
STL
-
YOW
11h 12m
1 stop
$306United Airlines
Thu, Jun 4 - Mon, Jun 8
United Airlines Logo
5:25 pm - 10:50 pm
YOW
-
STL
6h 25m
1 stop
United Airlines Logo
11:15 am - 11:54 pm
STL
-
YOW
11h 39m
2 stops
$307United Airlines
Fri, May 1 - Tue, May 5
United Airlines Logo
5:25 pm - 10:50 pm
YOW
-
STL
6h 25m
1 stop
United Airlines Logo
6:30 am - 9:35 pm
STL
-
YOW
14h 05m
1 stop
$308United Airlines
Fri, May 1 - Tue, May 5
United Airlines Logo
5:50 pm - 11:57 pm
YOW
-
STL
7h 07m
1 stop
United Airlines Logo
11:15 am - 11:54 pm
STL
-
YOW
11h 39m
2 stops
$309United Airlines
Fri, May 1 - Tue, May 5
Air Canada Logo
3:00 pm - 8:25 pm
YOW
-
STL
6h 25m
1 stop
Air Canada Logo
7:05 am - 1:05 pm
STL
-
YOW
5h 00m
1 stop
$327Air Canada
Sun, May 10 - Sun, May 17
Air Canada Logo
9:55 am - 3:46 pm
YOW
-
STL
6h 51m
2 stops
Air Canada Logo
6:00 am - 5:07 pm
STL
-
YOW
10h 07m
1 stop
$359Air Canada
Thu, Jun 4 - Sun, Jun 7
Air Canada Logo
7:00 am - 12:06 pm
YOW
-
STL
6h 06m
1 stop
Air Canada Logo
7:45 am - 10:11 pm
STL
-
YOW
13h 26m
2 stops
$365Air Canada
Fri, May 1 - Tue, May 5
Delta Logo
12:25 pm - 11:13 pm
YOW
-
STL
11h 48m
2 stops
Delta Logo
6:48 am - 5:35 pm
STL
-
YOW
9h 47m
2 stops
$375Delta
Fri, May 1 - Tue, May 5
Delta Logo
7:41 pm - 12:05 pm
YUL
-
STL
17h 24m
1 stop
Delta Logo
6:05 am - 6:51 pm
STL
-
YUL
11h 46m
1 stop
$447Delta
Fri, May 1 - Tue, May 5
Delta Logo
7:41 pm - 12:05 pm
YUL
-
STL
17h 24m
1 stop
Delta Logo
5:27 pm - 8:40 am
STL
-
YUL
14h 13m
1 stop
$448Delta
Fri, May 1 - Tue, May 5

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
6h 20m
1 stop
STL12:20 pmLambert-St Louis
May 16
STL6:04 pmLambert-St Louis
4h 09m
1 stop
YUL11:13 pmMontreal Pierre Elliott Trudeau Intl
$530
WestJet
Apr 24
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
11h 44m
1 stop
STL5:44 pmLambert-St Louis
May 1
STL6:05 amLambert-St Louis
11h 15m
2 stops
YUL6:20 pmMontreal Pierre Elliott Trudeau Intl
$546
WestJet
May 7
YUL7:44 pmMontreal Pierre Elliott Trudeau Intl
17h 39m
1 stop
STL12:23 pmLambert-St Louis
May 14
STL6:21 amLambert-St Louis
16h 20m
1 stop
YUL11:41 pmMontreal Pierre Elliott Trudeau Intl
$586

Air Canada flights from Quebec to St. Louis

Our best Air Canada deals on Quebec to St. Louis flight tickets
Air Canada
May 10
YOW3:00 pmOttawa
6h 25m
1 stop
STL8:25 pmLambert-St Louis
May 17
STL7:05 amLambert-St Louis
5h 00m
1 stop
YOW1:05 pmOttawa
$327
Air Canada
Jun 4
YOW9:55 amOttawa
6h 51m
2 stops
STL3:46 pmLambert-St Louis
Jun 7
STL6:00 amLambert-St Louis
10h 07m
1 stop
YOW5:07 pmOttawa
$359
Air Canada
May 1
YOW7:00 amOttawa
6h 06m
1 stop
STL12:06 pmLambert-St Louis
May 5
STL7:45 amLambert-St Louis
13h 26m
2 stops
YOW10:11 pmOttawa
$365

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 March 27, 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

Cheapest round-trip

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 6/4

5:50 pm-11:35 pm

1 stop6h 45m

Lambert-St Louis

Mon 6/8

9:23 am-9:35 pm

1 stop11h 12m

$306

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 5/1

5:25 pm-10:50 pm

1 stop6h 25m

Lambert-St Louis

Tue 5/5

11:15 am-11:54 pm

2 stops11h 39m

$307

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 5/1

5:25 pm-10:50 pm

1 stop6h 25m

Lambert-St Louis

Tue 5/5

6:30 am-9:35 pm

1 stop14h 05m

$308

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 5/1

5:50 pm-11:57 pm

1 stop7h 07m

Lambert-St Louis

Tue 5/5

11:15 am-11:54 pm

2 stops11h 39m

$309
Quickest round-trip

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 5/10

3:00 pm-8:25 pm

1 stop6h 25m

Lambert-St Louis

Sun 5/17

7:05 am-1:05 pm

1 stop5h 00m

$327

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 6/4

9:55 am-3:46 pm

2 stops6h 51m

Lambert-St Louis

Sun 6/7

6:00 am-5:07 pm

1 stop10h 07m

$359

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 5/1

7:00 am-12:06 pm

1 stop6h 06m

Lambert-St Louis

Tue 5/5

7:45 am-10:11 pm

2 stops13h 26m

$365

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 5/1

12:25 pm-11:13 pm

2 stops11h 48m

Lambert-St Louis

Tue 5/5

6:48 am-5:35 pm

2 stops9h 47m

$375

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 5/1

7:41 pm-12:05 pm

1 stop17h 24m

Lambert-St Louis

Tue 5/5

6:05 am-6:51 pm

1 stop11h 46m

$447

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 5/1

7:41 pm-12:05 pm

1 stop17h 24m

Lambert-St Louis

Tue 5/5

5:27 pm-8:40 am

1 stop14h 13m

$448

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 $420.

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 Tuesday when prices can be found for as low as $326. 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 $567. 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 2 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

Best Price Found

$508

Fastest flight time

2h 47m

Direct flights

Every day

Airports in St. Louis

1 airport
The best flight deal from Quebec to St. Louis found on momondo in the last 72 hours is $508
The fastest flight from Quebec to St. Louis takes 2h 47m
Direct flights go from Quebec to St. Louis every day.
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 $499Free CancellationRating
7.1
10,843 reviews
Search Air Canada 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
Collinsville
St. Peters
Wentzville
Alton
Fenton
Farmington
Clayton
Festus
Edwardsville
Eureka
Litchfield
Shrewsbury
Grafton

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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