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Cheap flights from Quebec to St. Louis from C$ 278

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 15/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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 p.m. - 8:25 p.m.
YOW
-
STL
6h 45m
1 stop
Air Canada Logo
7:05 a.m. - 1:05 p.m.
STL
-
YOW
5h 00m
1 stop
C$ 507Air Canada
Sat, 23 May - Sun, 24 May
United Airlines Logo
5:25 p.m. - 9:21 p.m.
YOW
-
STL
4h 56m
1 stop
United Airlines Logo
6:00 a.m. - 9:35 p.m.
STL
-
YOW
14h 35m
1 stop
C$ 509United Airlines
Tue, 2 Jun - Wed, 3 Jun
United Airlines Logo
6:25 a.m. - 12:11 p.m.
YOW
-
STL
6h 46m
1 stop
United Airlines Logo
12:55 p.m. - 6:48 p.m.
STL
-
YOW
4h 53m
1 stop
C$ 540United Airlines
Wed, 3 Jun - Sat, 6 Jun
United Airlines Logo
3:10 p.m. - 11:35 p.m.
YOW
-
STL
9h 25m
1 stop
United Airlines Logo
1:13 p.m. - 11:54 p.m.
STL
-
YOW
9h 41m
2 stops
C$ 542United Airlines
Wed, 3 Jun - Sat, 6 Jun
Air Canada Logo
10:00 a.m. - 2:00 p.m.
YOW
-
STL
5h 00m
1 stop
Air Canada Logo
8:55 a.m. - 3:10 p.m.
STL
-
YOW
5h 15m
1 stop
C$ 557Air Canada
Thu, 1 Oct - Tue, 6 Oct
United Airlines Logo
5:05 a.m. - 3:46 p.m.
YOW
-
STL
11h 41m
2 stops
United Airlines Logo
6:00 a.m. - 9:35 p.m.
STL
-
YOW
14h 35m
1 stop
C$ 594United Airlines
Fri, 29 May - Sun, 31 May
Air Canada Logo
11:15 a.m. - 7:23 p.m.
YOW
-
STL
9h 08m
2 stops
Air Canada Logo
7:05 a.m. - 1:05 p.m.
STL
-
YOW
5h 00m
1 stop
C$ 599Air Canada
Sat, 23 May - Sun, 24 May
American Airlines Logo
12:30 p.m. - 12:14 a.m.
YUL
-
STL
12h 44m
1 stop
American Airlines Logo
6:15 a.m. - 9:38 p.m.
STL
-
YUL
14h 23m
1 stop
C$ 610American Airlines
Tue, 2 Jun - Tue, 9 Jun
Delta Logo
2:29 p.m. - 8:39 p.m.
YUL
-
STL
7h 10m
1 stop
Delta Logo
5:20 p.m. - 11:57 p.m.
STL
-
YUL
5h 37m
1 stop
C$ 625Delta
Fri, 29 May - Mon, 1 Jun
Delta Logo
6:51 p.m. - 11:59 p.m.
YUL
-
STL
6h 08m
1 stop
Delta Logo
5:20 p.m. - 11:57 p.m.
STL
-
YUL
5h 37m
1 stop
C$ 626Delta
Fri, 29 May - Mon, 1 Jun

United Airlines flights from Quebec to St. Louis

Our best United Airlines deals on Quebec to St. Louis flight tickets
United Airlines
2 Jun
YOW5:25 p.m.Ottawa
4h 56m
1 stop
STL9:21 p.m.Lambert-St Louis
3 Jun
STL6:00 a.m.Lambert-St Louis
14h 35m
1 stop
YOW9:35 p.m.Ottawa
C$ 509
United Airlines
3 Jun
YOW6:00 a.m.Ottawa
16h 30m
2 stops
STL9:30 p.m.Lambert-St Louis
6 Jun
STL12:55 p.m.Lambert-St Louis
4h 53m
1 stop
YOW6:48 p.m.Ottawa
C$ 540
United Airlines
3 Jun
YOW3:10 p.m.Ottawa
9h 25m
1 stop
STL11:35 p.m.Lambert-St Louis
6 Jun
STL1:13 p.m.Lambert-St Louis
9h 41m
2 stops
YOW11:54 p.m.Ottawa
C$ 542

Air Canada flights from Quebec to St. Louis

Our best Air Canada deals on Quebec to St. Louis flight tickets
Air Canada
23 May
YOW2:40 p.m.Ottawa
6h 45m
1 stop
STL8:25 p.m.Lambert-St Louis
24 May
STL7:05 a.m.Lambert-St Louis
5h 00m
1 stop
YOW1:05 p.m.Ottawa
C$ 507
Air Canada
1 Oct
YOW10:00 a.m.Ottawa
5h 00m
1 stop
STL2:00 p.m.Lambert-St Louis
6 Oct
STL8:55 a.m.Lambert-St Louis
5h 15m
1 stop
YOW3:10 p.m.Ottawa
C$ 557
Air Canada
23 May
YOW11:15 a.m.Ottawa
9h 08m
2 stops
STL7:23 p.m.Lambert-St Louis
24 May
STL7:05 a.m.Lambert-St Louis
5h 00m
1 stop
YOW1:05 p.m.Ottawa
C$ 599

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 96,600 searches. Data last updated 11 May 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 23/5

2:40 p.m.-8:25 p.m.

1 stop6h 45m

Lambert-St Louis

Sun 24/5

7:05 a.m.-1:05 p.m.

1 stop5h 00m

C$ 507

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 2/6

5:25 p.m.-9:21 p.m.

1 stop4h 56m

Lambert-St Louis

Wed 3/6

6:00 a.m.-9:35 p.m.

1 stop14h 35m

C$ 509

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 3/6

6:25 a.m.-12:11 p.m.

1 stop6h 46m

Lambert-St Louis

Sat 6/6

12:55 p.m.-6:48 p.m.

1 stop4h 53m

C$ 540

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 3/6

3:10 p.m.-11:35 p.m.

1 stop9h 25m

Lambert-St Louis

Sat 6/6

1:13 p.m.-11:54 p.m.

2 stops9h 41m

C$ 542
Quickest round-trip

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 1/10

10:00 a.m.-2:00 p.m.

1 stop5h 00m

Lambert-St Louis

Tue 6/10

8:55 a.m.-3:10 p.m.

1 stop5h 15m

C$ 557

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 29/5

5:05 a.m.-3:46 p.m.

2 stops11h 41m

Lambert-St Louis

Sun 31/5

6:00 a.m.-9:35 p.m.

1 stop14h 35m

C$ 594

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 23/5

11:15 a.m.-7:23 p.m.

2 stops9h 08m

Lambert-St Louis

Sun 24/5

7:05 a.m.-1:05 p.m.

1 stop5h 00m

C$ 599

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 2/6

12:30 p.m.-12:14 a.m.

1 stop12h 44m

Lambert-St Louis

Tue 9/6

6:15 a.m.-9:38 p.m.

1 stop14h 23m

C$ 610

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 29/5

2:29 p.m.-8:39 p.m.

1 stop7h 10m

Lambert-St Louis

Mon 1/6

5:20 p.m.-11:57 p.m.

1 stop5h 37m

C$ 625

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 29/5

6:51 p.m.-11:59 p.m.

1 stop6h 08m

Lambert-St Louis

Mon 1/6

5:20 p.m.-11:57 p.m.

1 stop5h 37m

C$ 626

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?

The month of December is, on average, the cheapest month to fly to St. Louis from Quebec, with most prices found around C$ 379. If you don’t want to visit St. Louis in December, then you should wait until July to fly from Quebec, when ticket prices are also cheap, with an average price of C$ 391.

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Friday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 709. The most expensive day to fly to St. Louis is Thursday, with ticket prices averaging around C$ 1,019.

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 22% 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

C$ 491

Fastest flight time

2h 46m

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 C$ 491. The best round-trip flight deal from Quebec to St. Louis found on momondo in the last 72 hours is C$ 599.
The fastest flight from Quebec to St. Louis takes 2h 46m
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 are updated daily.

  • 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 necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking 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 C$ 586Free CancellationRating
7.1
11,017 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from Quebec to St. Louis?

It is quick and easy to find Quebec to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

Can I find flights from Quebec to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Quebec on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Quebec to St. Louis?

Once you have performed a search for Quebec to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Quebec to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Quebec. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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