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Cheap flights from Quebec to St. Louis from C$ 345

YUL — STL
11 Oct — 18 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Quebec to St. Louis

Enter your travel dates to find the best prices.

Cheapest flights from Quebec to St. Louis

Tue 20/105:34 p.m. -
1 stop18h 16m
Sat 24/107:28 a.m. -
1 stop8h 24m
Deal found 9/9C$ 583
Fri 16/102:50 p.m. -
1 stop4h 51m
Mon 26/104:05 p.m. -
1 stop6h 50m
Deal found 9/9C$ 616
Thu 15/102:50 p.m. -
1 stop4h 51m
Tue 20/102:40 p.m. -
1 stop5h 40m
Deal found 8/9C$ 622
Thu 15/104:55 p.m. -
Nonstop2h 46m
Tue 20/1012:10 p.m. -
Nonstop2h 31m
Deal found 8/9C$ 659
Tue 20/104:55 p.m. -
Nonstop2h 46m
Thu 22/1012:10 p.m. -
Nonstop2h 31m
Deal found 9/9C$ 660
Fri 23/104:55 p.m. -
Nonstop2h 46m
Tue 3/114:05 p.m. -
1 stop7h 20m
Deal found 9/9C$ 662
Thu 1/102:50 p.m. -
1 stop4h 51m
Fri 16/102:40 p.m. -
1 stop5h 40m
Deal found 7/9C$ 676
Thu 24/910:10 a.m. -
1 stop4h 50m
Sun 27/92:40 p.m. -
1 stop4h 41m
Deal found 9/9C$ 683
Fri 23/1010:32 a.m. -
1 stop11h 20m
Tue 3/117:26 a.m. -
2 stops13h 00m
Deal found 9/9C$ 699
Sat 3/1010:30 a.m. -
2 stops11h 14m
Sat 31/105:00 a.m. -
1 stop10h 52m
Deal found 10/9C$ 701
Tue 6/106:00 a.m. -
1 stop16h 09m
Wed 7/109:30 a.m. -
1 stop5h 42m
Deal found 5/9C$ 703
Fri 2/105:34 p.m. -
1 stop17h 39m
Fri 30/107:29 a.m. -
1 stop8h 23m
Deal found 10/9C$ 705

Find flight deals from Quebec to St. Louis

Round-trip from

C$ 583

One-way from

C$ 345

Popular in

December

Cheapest in

June

Average price

C$ 747
American Airlines
  • American Airlines
  • 20/10-24/10
  • 2 total stops
  • 26h 40m total
  • Quebec to St. Louis
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Air Canada
  • Air Canada
  • 8/10-31/12
  • 1 total stop
  • 4h 51m total
  • Quebec to St. Louis
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Highest demand for flights based on searches. 21% potential increase in price (C$ 295 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 42 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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 Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Thu 8/10

2:50 p.m.-6:41 p.m.

1 stop4h 51m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 345

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Sat 24/10

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

1 stop5h 00m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 351

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Thu 8/10

2:00 p.m.-5:40 p.m.

3 stops28h 40m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 358
Quickest round-trip

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 23/10

4:55 p.m.-6:41 p.m.

Nonstop2h 46m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 359

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 8/10

4:55 p.m.-6:41 p.m.

Nonstop2h 46m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 359

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 22/10

12:30 p.m.-12:19 a.m.

1 stop12h 49m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 370

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 22/10

4:55 p.m.-6:41 p.m.

Nonstop2h 46m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 392

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Sat 24/10

6:05 a.m.-9:21 p.m.

2 stops16h 16m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 402

OttawaSt. Louis

YOW Ottawa - STL Lambert-St Louis

YOWSTL

Ottawa

Thu 8/10

6:00 a.m.-3:43 p.m.

2 stops10h 43m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 402

Québec CitySt. Louis

YQB Québec City - STL Lambert-St Louis

YQBSTL

Québec City

Fri 23/10

1:05 p.m.-6:41 p.m.

1 stop6h 36m

Lambert-St Louis

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 410

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 38 resultsSorted by cheapest first
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Best time to book a flight from Quebec to St. Louis

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

Cheapflights Insights

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

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

Currently, August is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 611). Flying from Quebec to St. Louis in December is currently the most expensive (average of C$ 1,109). 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 QC to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Quebec to St. Louis as you normally would.

Weekly flight availability from Quebec to St. Louis

The most flights from CAQC to STL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

How much does it cost to fly round-trip from Quebec to St. Louis?

Airfare is below average for this route at the moment.
Quebec to St. Louis flights typically cost between C$ 768 and C$ 868 in October.
The cheapest round-trip price found within the last 5 days was C$ 583 on American Airlines (20 Oct-24 Oct).

Related info for your journey

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

    Located just 20.4 km from the city centre, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Quebec.

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

    Airlines like Air Canada and United Airlines fly from Quebec to St. Louis in about 4h 51m. The time it takes to get you to your destination can typically vary by up to 11h 18m. Quebec and St. Louis are separated by a distance of 1413 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Quebec to St. Louis?

    Most travellers choose Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis, Ottawa - Lambert-St Louis or Québec City - Lambert-St Louis when deciding on the best route from Quebec to St. Louis.

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

    No one likes to see their flight delayed. When booking a flight from Quebec to St. Louis consider choosing Air Canada (68%), Jazz (68%) or United Airlines (37%) as they are the most reliable in getting you off to your destination on time.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Quebec to St. Louis 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 Quebec to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 611). Flying from Quebec to St. Louis in December is currently the most expensive (average of C$ 1,109). 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

Travelling to a place near St. Louis?

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Chesterfield

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Top airline flying from Quebec to St. Louis

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 557AverageC$ 806FlexibilityNo cancel feeOn-time67%
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Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to St. Louis from Quebec today and book when prices fit your budget.

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