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Cheap flights from Quebec to St. Louis from $203

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 6/15. 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.
Air Canada Logo
2:40 pm - 8:25 pm
YOW
-
STL
6h 45m
1 stop
Air Canada Logo
7:05 am - 1:05 pm
STL
-
YOW
5h 00m
1 stop
$371Air Canada
Sat, May 23 - Sun, May 24
United Airlines Logo
5:25 pm - 9:21 pm
YOW
-
STL
4h 56m
1 stop
United Airlines Logo
6:00 am - 9:35 pm
STL
-
YOW
14h 35m
1 stop
$372United Airlines
Tue, Jun 2 - Wed, Jun 3
United Airlines Logo
6:00 am - 9:30 pm
YOW
-
STL
16h 30m
2 stops
United Airlines Logo
12:55 pm - 6:48 pm
STL
-
YOW
4h 53m
1 stop
$395United Airlines
Wed, Jun 3 - Sat, Jun 6
United Airlines Logo
3:10 pm - 11:35 pm
YOW
-
STL
9h 25m
1 stop
United Airlines Logo
1:13 pm - 11:54 pm
STL
-
YOW
9h 41m
2 stops
$396United Airlines
Wed, Jun 3 - Sat, Jun 6
Air Canada Logo
10:00 am - 2:00 pm
YOW
-
STL
5h 00m
1 stop
Air Canada Logo
8:55 am - 3:10 pm
STL
-
YOW
5h 15m
1 stop
$407Air Canada
Thu, Oct 1 - Tue, Oct 6
United Airlines Logo
5:05 am - 3:46 pm
YOW
-
STL
11h 41m
2 stops
United Airlines Logo
6:00 am - 9:35 pm
STL
-
YOW
14h 35m
1 stop
$434United Airlines
Fri, May 29 - Sun, May 31
Air Canada Logo
11:15 am - 7:23 pm
YOW
-
STL
9h 08m
2 stops
Air Canada Logo
7:05 am - 1:05 pm
STL
-
YOW
5h 00m
1 stop
$438Air Canada
Sat, May 23 - Sun, May 24
American Airlines Logo
12:30 pm - 12:14 am
YUL
-
STL
12h 44m
1 stop
American Airlines Logo
6:15 am - 9:38 pm
STL
-
YUL
14h 23m
1 stop
$446American Airlines
Tue, Jun 2 - Tue, Jun 9
Delta Logo
2:29 pm - 8:39 pm
YUL
-
STL
7h 10m
1 stop
Delta Logo
5:20 pm - 11:57 pm
STL
-
YUL
5h 37m
1 stop
$457Delta
Fri, May 29 - Mon, Jun 1
Delta Logo
6:51 pm - 11:59 pm
YUL
-
STL
6h 08m
1 stop
Delta Logo
5:20 pm - 11:57 pm
STL
-
YUL
5h 37m
1 stop
$458Delta
Fri, May 29 - Mon, Jun 1

United Airlines flights from Quebec to St. Louis

Our best United Airlines deals on Quebec to St. Louis flight tickets
United Airlines
Jun 2
YOW5:25 pmOttawa
4h 56m
1 stop
STL9:21 pmLambert-St Louis
Jun 3
STL6:00 amLambert-St Louis
14h 35m
1 stop
YOW9:35 pmOttawa
$372
United Airlines
Jun 3
YOW6:00 amOttawa
16h 30m
2 stops
STL9:30 pmLambert-St Louis
Jun 6
STL12:55 pmLambert-St Louis
4h 53m
1 stop
YOW6:48 pmOttawa
$395
United Airlines
Jun 3
YOW3:10 pmOttawa
9h 25m
1 stop
STL11:35 pmLambert-St Louis
Jun 6
STL1:13 pmLambert-St Louis
9h 41m
2 stops
YOW11:54 pmOttawa
$396

Air Canada flights from Quebec to St. Louis

Our best Air Canada deals on Quebec to St. Louis flight tickets
Air Canada
May 23
YOW2:40 pmOttawa
6h 45m
1 stop
STL8:25 pmLambert-St Louis
May 24
STL7:05 amLambert-St Louis
5h 00m
1 stop
YOW1:05 pmOttawa
$371
Air Canada
Oct 1
YOW10:00 amOttawa
5h 00m
1 stop
STL2:00 pmLambert-St Louis
Oct 6
STL8:55 amLambert-St Louis
5h 15m
1 stop
YOW3:10 pmOttawa
$407
Air Canada
May 23
YOW11:15 amOttawa
9h 08m
2 stops
STL7:23 pmLambert-St Louis
May 24
STL7:05 amLambert-St Louis
5h 00m
1 stop
YOW1:05 pmOttawa
$438

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 May 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

Cheapest round-trip

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 5/23

2:40 pm-8:25 pm

1 stop6h 45m

Lambert-St Louis

Sun 5/24

7:05 am-1:05 pm

1 stop5h 00m

$371

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 6/2

5:25 pm-9:21 pm

1 stop4h 56m

Lambert-St Louis

Wed 6/3

6:00 am-9:35 pm

1 stop14h 35m

$372

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 6/3

6:00 am-9:30 pm

2 stops16h 30m

Lambert-St Louis

Sat 6/6

12:55 pm-6:48 pm

1 stop4h 53m

$395

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 6/3

3:10 pm-11:35 pm

1 stop9h 25m

Lambert-St Louis

Sat 6/6

1:13 pm-11:54 pm

2 stops9h 41m

$396
Quickest round-trip

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 10/1

10:00 am-2:00 pm

1 stop5h 00m

Lambert-St Louis

Tue 10/6

8:55 am-3:10 pm

1 stop5h 15m

$407

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 5/29

5:05 am-3:46 pm

2 stops11h 41m

Lambert-St Louis

Sun 5/31

6:00 am-9:35 pm

1 stop14h 35m

$434

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 5/23

11:15 am-7:23 pm

2 stops9h 08m

Lambert-St Louis

Sun 5/24

7:05 am-1:05 pm

1 stop5h 00m

$438

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 6/2

12:30 pm-12:14 am

1 stop12h 44m

Lambert-St Louis

Tue 6/9

6:15 am-9:38 pm

1 stop14h 23m

$446

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 5/29

2:29 pm-8:39 pm

1 stop7h 10m

Lambert-St Louis

Mon 6/1

5:20 pm-11:57 pm

1 stop5h 37m

$457

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 5/29

6:51 pm-11:59 pm

1 stop6h 08m

Lambert-St Louis

Mon 6/1

5:20 pm-11:57 pm

1 stop5h 37m

$458

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, December 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 $277. The month of July is another great option to travel to St. Louis, with average flight prices from Quebec averaging around $286.

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 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

Can stopping save me money on Quebec to St. Louis flights?

You could potentially save up to 33% 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

$270

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 $270. The best round-trip flight deal from Quebec to St. Louis found on momondo in the last 72 hours is $669.
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 $499Free CancellationRating
7.1
11,012 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
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
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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