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Cheap flights from Quebec to St. Louis from C$ 308

YUL — STL
24 Nov — 1 Dec1
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

Thu 10/1212:08 p.m. -
1 stop11h 09m
Mon 14/128:24 p.m. -
1 stop14h 04m
Deal found 21/10C$ 574
Tue 1/124:40 p.m. -
3 stops19h 30m
Mon 7/1212:02 p.m. -
3 stops26h 58m
Deal found 20/10C$ 592
Wed 18/1112:10 p.m. -
1 stop11h 05m
Sun 22/118:12 p.m. -
1 stop14h 14m
Deal found 20/10C$ 633
Thu 19/1112:10 p.m. -
1 stop8h 54m
Thu 26/1112:44 p.m. -
2 stops25h 42m
Deal found 21/10C$ 657
Fri 20/118:05 a.m. -
2 stops14h 35m
Fri 27/117:30 a.m. -
1 stop8h 37m
Deal found 23/10C$ 695
Sun 20/124:00 p.m. -
1 stop17h 29m
Thu 31/126:00 a.m. -
1 stop8h 14m
Deal found 21/10C$ 711
Thu 19/119:25 a.m. -
1 stop13h 15m
Thu 26/116:00 a.m. -
1 stop10h 07m
Deal found 21/10C$ 744
Tue 24/116:45 a.m. -
2 stops18h 14m
Mon 30/116:35 p.m. -
3 stops23h 37m
Deal found 23/10C$ 749
Thu 10/129:45 a.m. -
3 stops26h 32m
Mon 14/127:54 p.m. -
3 stops25h 17m
Deal found 21/10C$ 752
Fri 11/121:04 p.m. -
2 stops11h 58m
Mon 14/128:24 p.m. -
1 stop14h 04m
Deal found 21/10C$ 755
Sun 20/129:25 a.m. -
1 stop10h 37m
Thu 31/127:18 a.m. -
2 stops13h 24m
Deal found 21/10C$ 758
Thu 12/1112:45 p.m. -
1 stop10h 07m
Sun 15/116:00 a.m. -
1 stop9h 41m
Deal found 24/10C$ 1,060

Find flight deals from Quebec to St. Louis

Round-trip from

C$ 574

One-way from

C$ 308

Popular in

December

Cheapest in

June

Average price

C$ 983
American Airlines
  • American Airlines
  • 10/12-14/12
  • 2 total stops
  • 25h 13m total
  • Quebec to St. Louis
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American Airlines
  • American Airlines
  • 7/12-31/12
  • 1 total stop
  • 12h 54m total
  • Quebec to St. Louis
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (C$ 314 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 50 potential savings vs. average RT price).
Search Deals
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 Quebec to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 7/12

12:08 p.m.-12:02 a.m.

1 stop12h 54m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 308
Quickest round-trip

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 24/11

12:10 p.m.-7:50 p.m.

1 stop8h 40m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 333

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 3/12

4:40 p.m.-11:17 a.m.

3 stops19h 37m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 342

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 3/12

12:08 p.m.-7:58 p.m.

1 stop8h 50m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 344

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 6/12

9:45 a.m.-1:21 p.m.

3 stops28h 36m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 358

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 8/12

1:04 p.m.-12:02 a.m.

2 stops11h 58m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 361

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 24/11

9:45 a.m.-1:31 p.m.

3 stops28h 46m

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

Tue 24/11

6:50 p.m.-3:43 p.m.

2 stops21h 53m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 396

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 6/12

9:25 a.m.-10:59 p.m.

1 stop14h 34m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 427

MontrealSt. Louis

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

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 23/12

9:25 a.m.-7:02 p.m.

1 stop10h 37m

Lambert-St Louis

Wed 31/12

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

Nonstop0h 00m

C$ 517

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/10

Showing 1-10 of 23 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$ 619). Flying from Quebec to St. Louis in January is currently the most expensive (average of C$ 1,245). 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.

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$ 864 and C$ 1,086 in December.
The cheapest round-trip price found within the last 5 days was C$ 548 on Multiple Airlines (10 Dec-14 Dec).

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 United Airlines fly from Quebec to St. Louis in about 14h 35m. The time it takes to get you to your destination can typically vary by up to . Quebec and St. Louis are separated by a distance of 1556 km.

  • 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 (67%), Jazz (67%) or United Airlines (67%) 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$ 619). Flying from Quebec to St. Louis in January is currently the most expensive (average of C$ 1,245). 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?

Book flights to St. Louis if you plan to visit one of these locations
Chesterfield

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Top airline flying from Quebec to St. Louis

AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 565AverageC$ 827FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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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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