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Cheap flights from St. Louis to Quebec from C$ 252

STL — YUL
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from St. Louis to Quebec

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis to Quebec

Tue 8/128:24 p.m. -
1 stop14h 04m
Tue 15/1212:08 p.m. -
1 stop8h 50m
Deal found 23/10C$ 587
Tue 10/115:29 p.m. -
1 stop16h 56m
Mon 16/111:04 p.m. -
2 stops11h 55m
Deal found 22/10C$ 656
Fri 27/118:12 p.m. -
1 stop14h 14m
Tue 1/1212:10 p.m. -
1 stop12h 51m
Deal found 24/10C$ 712
Sat 21/113:04 p.m. -
3 stops27h 01m
Mon 23/119:45 a.m. -
3 stops23h 09m
Deal found 25/10C$ 720
Fri 11/1212:02 p.m. -
3 stops26h 58m
Sun 13/129:45 a.m. -
3 stops26h 32m
Deal found 25/10C$ 755

Find flight deals from St. Louis to Quebec

Round-trip from

C$ 555

One-way from

C$ 252

Popular in

November

Cheapest in

February

Average price

C$ 880
American Airlines
  • American Airlines
  • 3/2-6/2
  • 2 total stops
  • 25h 36m total
  • St. Louis to Quebec
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American Airlines
  • American Airlines
  • 13/11-31/12
  • 1 total stop
  • 14h 10m total
  • St. Louis to Quebec
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 281 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease (C$ 97 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Quebec that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Wed 2/12

12:05 p.m.-4:00 p.m.

3 stops26h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 279

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sun 6/12

8:24 p.m.-11:28 a.m.

1 stop14h 04m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 294

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Wed 25/11

3:04 p.m.-10:10 p.m.

3 stops30h 06m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 296

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Tue 1/12

8:12 p.m.-11:28 a.m.

1 stop14h 16m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 315

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Tue 1/12

6:13 p.m.-4:00 p.m.

3 stops44h 47m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 335

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Wed 25/11

7:26 a.m.-9:26 p.m.

2 stops13h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 367

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sun 6/12

2:00 p.m.-10:11 p.m.

3 stops31h 11m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 367
Quickest round-trip

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Thu 24/12

8:05 a.m.-5:07 p.m.

1 stop8h 02m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 370

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sat 19/12

6:21 p.m.-4:00 p.m.

3 stops20h 39m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 371

St. LouisMontreal

STL Lambert-St Louis - YUL Montreal Pierre Elliott Trudeau Intl

STLYUL

Lambert-St Louis

Sun 6/12

6:05 p.m.-8:48 a.m.

2 stops13h 43m

Montreal Pierre Elliott Trudeau Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 411

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/10

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from St. Louis to Quebec

Have a flexible travel schedule? Discover the best time to fly to Quebec from St. Louis with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Quebec

What is the cheapest month to book a flight from St. Louis to Quebec?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Quebec (average of C$ 641). Flying from St. Louis to Quebec in March is currently the most expensive (average of C$ 1,092). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to QC?

When flying from St. Louis to Quebec, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

  • What airport do you fly from for flights from St. Louis to Quebec?

    Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Quebec. It is only a 20.4 km journey to Lambert-St Louis (STL) from St. Louis’s city centre.

  • How long is the flight from St. Louis to Quebec?

    There are many flights that can get you from St. Louis to Quebec in 14h 15m. Fly via American Airlines to get the fastest option. Airlines will cover a distance of 1556 km.

  • What are the most reliable airlines from St. Louis to Quebec?

    No one likes to see their flight delayed. When booking a flight from St. Louis to Quebec consider choosing Air Canada (85%), Jazz (85%) or United Airlines (85%) as they are the most reliable in getting you off to your destination on time.

  • Can I find deals for flights from St. Louis to Quebec that include hotel bookings?

    Yes. In addition to deals on St. Louis to Quebec flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Quebec?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Quebec.

  • Can I find deals for business class flights from St. Louis to Quebec?

    Yes. Cheapflights offers flight deals from St. Louis to Quebec by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Quebec?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Quebec (average of C$ 641). Flying from St. Louis to Quebec in March is currently the most expensive (average of C$ 1,092). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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How does Cheapflights help users find flights from St. Louis to Quebec?

Cheapflights helps you search for flights from St. Louis to Quebec via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Quebec?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Quebec.

Can Cheapflights find flights from St. Louis to Quebec with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to Quebec, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from St. Louis to Quebec become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Quebec from St. Louis today and book when prices fit your budget.

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