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Cheap flights from Quebec to St. Louis from $225

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 8/8. 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

Discover deals from 900+ travel sites with momondo.

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
3:10 pm - 9:51 pm
YOW
-
STL
7h 41m
1 stop
United Airlines Logo
1:08 pm - 9:56 pm
STL
-
YOW
7h 48m
2 stops
$377United Airlines
Sat, Oct 31 - Wed, Nov 4
United Airlines Logo
2:00 pm - 9:13 pm
YOW
-
STL
8h 13m
2 stops
United Airlines Logo
5:00 am - 2:09 pm
STL
-
YOW
8h 09m
1 stop
$378United Airlines
Tue, Oct 27 - Tue, Nov 3
United Airlines Logo
3:10 pm - 11:44 pm
YOW
-
STL
9h 34m
1 stop
United Airlines Logo
6:00 am - 2:17 pm
STL
-
YOW
7h 17m
2 stops
$393United Airlines
Mon, Jul 20 - Tue, Jul 21
Multiple Airlines Logo
7:00 am - 11:59 pm
YOW
-
STL
17h 59m
1 stop
Multiple Airlines Logo
4:09 pm - 9:20 pm
STL
-
YOW
28h 11m
2 stops
$394Multiple Airlines
Sat, Jul 18 - Wed, Jul 22
Multiple Airlines Logo
7:00 am - 11:59 pm
YOW
-
STL
17h 59m
1 stop
Multiple Airlines Logo
4:57 pm - 5:03 pm
STL
-
YOW
23h 06m
2 stops
$401Multiple Airlines
Sat, Jul 18 - Mon, Jul 27
Air Canada Logo
10:05 am - 3:26 pm
YOW
-
STL
6h 21m
1 stop
Air Canada Logo
4:05 pm - 1:40 am
STL
-
YOW
8h 35m
1 stop
$423Air Canada
Tue, Oct 27 - Fri, Oct 30
Air Canada Logo
9:55 am - 9:13 pm
YOW
-
STL
12h 18m
2 stops
Air Canada Logo
1:08 pm - 9:56 pm
STL
-
YOW
7h 48m
2 stops
$436Air Canada
Sat, Oct 31 - Wed, Nov 4
American Airlines Logo
12:30 pm - 12:14 am
YUL
-
STL
12h 44m
1 stop
American Airlines Logo
7:21 am - 4:53 pm
STL
-
YUL
8h 32m
1 stop
$483American Airlines
Wed, Sep 2 - Mon, Sep 28
Delta Logo
7:00 am - 12:56 pm
YUL
-
STL
6h 56m
1 stop
Delta Logo
7:20 am - 5:03 pm
STL
-
YUL
8h 43m
1 stop
$491Delta
Thu, Oct 15 - Mon, Oct 19
Delta Logo
7:00 am - 12:56 pm
YUL
-
STL
6h 56m
1 stop
Delta Logo
7:20 am - 5:03 pm
STL
-
YUL
8h 43m
1 stop
$492Delta
Thu, Oct 15 - Mon, Oct 19

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Delta flights from Quebec to St. Louis

Our best Delta deals on Quebec to St. Louis flight tickets
Delta
Jul 21
YOW6:55 amOttawa
7h 10m
2 stops
STL1:05 pmLambert-St Louis
Jul 25
STL6:30 amLambert-St Louis
10h 05m
2 stops
YOW5:35 pmOttawa
$468
Delta
Oct 26
YOW5:40 amOttawa
12h 31m
2 stops
STL5:11 pmLambert-St Louis
Nov 1
STL12:00 pmLambert-St Louis
11h 42m
2 stops
YOW12:42 amOttawa
$486
Delta
Oct 15
YUL7:00 amMontreal Pierre Elliott Trudeau Intl
6h 56m
1 stop
STL12:56 pmLambert-St Louis
Oct 19
STL7:20 amLambert-St Louis
8h 43m
1 stop
YUL5:03 pmMontreal Pierre Elliott Trudeau Intl
$491

American Airlines flights from Quebec to St. Louis

Our best American Airlines deals on Quebec to St. Louis flight tickets
American Airlines
Sep 2
YUL12:30 pmMontreal Pierre Elliott Trudeau Intl
12h 44m
1 stop
STL12:14 amLambert-St Louis
Sep 28
STL7:21 amLambert-St Louis
8h 32m
1 stop
YUL4:53 pmMontreal Pierre Elliott Trudeau Intl
$483
American Airlines
Aug 3
YUL7:51 amMontreal Pierre Elliott Trudeau Intl
16h 41m
1 stop
STL11:32 pmLambert-St Louis
Aug 10
STL8:07 pmLambert-St Louis
14h 36m
1 stop
YUL11:43 amMontreal Pierre Elliott Trudeau Intl
$523
American Airlines
Oct 30
YOW7:00 amOttawa
26h 04m
2 stops
STL8:04 amLambert-St Louis
Nov 3
STL8:40 amLambert-St Louis
15h 03m
2 stops
YOW12:43 amOttawa
$556

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 June 29, 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

Sat 10/31

3:10 pm-9:51 pm

1 stop7h 41m

Lambert-St Louis

Wed 11/4

1:08 pm-9:56 pm

2 stops7h 48m

$377

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 10/27

2:00 pm-9:13 pm

2 stops8h 13m

Lambert-St Louis

Tue 11/3

5:00 am-2:09 pm

1 stop8h 09m

$378

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mon 7/20

3:10 pm-11:44 pm

1 stop9h 34m

Lambert-St Louis

Tue 7/21

6:00 am-2:17 pm

2 stops7h 17m

$393

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 7/18

7:00 am-11:59 pm

1 stop17h 59m

Lambert-St Louis

Wed 7/22

4:09 pm-9:20 pm

2 stops28h 11m

$394

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 7/18

7:00 am-11:59 pm

1 stop17h 59m

Lambert-St Louis

Mon 7/27

4:57 pm-5:03 pm

2 stops23h 06m

$401
Quickest round-trip

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 10/27

10:05 am-3:26 pm

1 stop6h 21m

Lambert-St Louis

Fri 10/30

4:05 pm-1:40 am

1 stop8h 35m

$423

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 10/31

9:55 am-9:13 pm

2 stops12h 18m

Lambert-St Louis

Wed 11/4

1:08 pm-9:56 pm

2 stops7h 48m

$436

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 9/2

12:30 pm-12:14 am

1 stop12h 44m

Lambert-St Louis

Mon 9/28

7:21 am-4:53 pm

1 stop8h 32m

$483

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/15

7:00 am-12:56 pm

1 stop6h 56m

Lambert-St Louis

Mon 10/19

7:20 am-5:03 pm

1 stop8h 43m

$491

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/15

7:00 am-12:56 pm

1 stop6h 56m

Lambert-St Louis

Mon 10/19

7:20 am-5:03 pm

1 stop8h 43m

$492

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, June 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 $248. The month of December is another great option to travel to St. Louis, with average flight prices from Quebec averaging around $277.

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 $498. 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 Friday because tickets tend to average around $690. 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 St. Louis flights?

There is only 1 cabin class available to choose from on Quebec to 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?

No. A direct flight is the cheapest option for a flight between Quebec to St. Louis.

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

$371

Fastest flight time

2h 47m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Quebec in the past 72 hours is $371. The best round-trip flight deal from Quebec to St. Louis found on momondo in the last 72 hours is $498.
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

Frequently asked questions about flying from Quebec to St. Louis

  • 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 $498Free CancellationRating
7.1
11,270 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
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Alton
Wentzville
Farmington
Fenton
Clayton
Festus
Eureka
Litchfield
Edwardsville
Grafton
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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