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Cheap flights from Quebec to St. Louis from C$ 269

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 22/3. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
9 Mar — 16 Mar1
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
Explore the most affordable flight options available from Quebec to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 February 2026.

Thu 9/410:44 a.m.
YOW
-
STL
1 stop11h 24m
United Airlines
Sat 11/47:45 a.m.
STL
-
YOW
1 stop8h 22m
United Airlines
Deal found 6/2C$ 432
Fri 27/35:11 p.m.
YOW
-
STL
1 stop5h 47m
United Airlines
Mon 30/310:00 a.m.
STL
-
YOW
1 stop6h 07m
United Airlines
Deal found 5/2C$ 436
Mon 20/412:30 p.m.
YUL
-
STL
1 stop12h 16m
American Airlines
Sat 25/45:21 p.m.
STL
-
YUL
1 stop17h 23m
American Airlines
Deal found 4/2C$ 477
Sun 1/37:15 a.m.
YOW
-
STL
1 stop9h 14m
Air Canada
Wed 4/34:05 p.m.
STL
-
YOW
1 stop6h 13m
Air Canada
Deal found 3/2C$ 502
Sun 1/35:00 a.m.
YOW
-
STL
1 stop11h 29m
United Airlines
Wed 4/36:25 a.m.
STL
-
YOW
2 stops7h 02m
United Airlines
Deal found 5/2C$ 563
Mon 10/82:25 p.m.
YOW
-
STL
1 stop5h 02m
Air Canada
Sat 22/812:10 p.m.
STL
-
YOW
1 stop6h 35m
Air Canada
Deal found 5/2C$ 604
Fri 13/38:50 a.m.
YUL
-
STL
2 stops7h 39m
Air Canada
Sun 15/34:05 p.m.
STL
-
YUL
1 stop6h 27m
Air Canada
Deal found 4/2C$ 613
Thu 9/46:45 a.m.
YOW
-
STL
2 stops10h 56m
American Airlines
Sat 11/45:21 p.m.
STL
-
YOW
2 stops24h 05m
American Airlines
Deal found 6/2C$ 639
Sun 10/56:45 p.m.
YUL
-
STL
1 stop6h 14m
Delta
Sat 16/56:04 p.m.
STL
-
YUL
1 stop4h 09m
Delta
Deal found 5/2C$ 645
Sun 10/56:10 p.m.
YUL
-
STL
Nonstop2h 55m
Air Canada
Sat 16/57:30 a.m.
STL
-
YUL
1 stop6h 51m
Air Canada
Deal found 5/2C$ 650
Thu 26/27:33 p.m.
YUL
-
STL
2 stops36h 18m
Multiple Airlines
Tue 3/33:49 p.m.
STL
-
YUL
1 stop7h 41m
Multiple Airlines
Deal found 3/2C$ 706
Mon 21/97:00 a.m.
YUL
-
STL
1 stop6h 53m
WestJet
Mon 21/95:30 p.m.
STL
-
YUL
1 stop5h 26m
WestJet
Deal found 4/2C$ 708

Find flight deals from Quebec to St. Louis

Keep the following information in mind while searching for Quebec to St. Louis flight deals. Data was last updated 7 February 2026.

Round-trip from

C$ 432

One-way from

C$ 269

Popular in

December

Cheapest in

July

Average price

C$ 622

Good one-way deal

C$ 490 or less
United Airlines
  • United Airlines
  • 9/4-11/4
  • 2 total stops
  • 19h 46m total
  • Quebec to St. Louis
Search Deals
22/3
  • 22/3
  • 2 total stops
  • 43h 12m total
  • Quebec to St. Louis
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 259 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 38 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a one-way flight from Quebec to Lambert-St Louis.
Search Deals

Cheapflights 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, Cheapflights users made 629,999 searches. Data last updated 7 February 2026.
Use the filters below to find and compare flights from Quebec to St. Louis that are best for you.

Fly from

Quebec

Fly to

St. Louis

Route

Depart

Return

Price

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 9/4

10:44 a.m.-9:08 p.m.

1 stop11h 24m

Lambert-St Louis

Sat 11/4

7:45 a.m.-5:07 p.m.

1 stop8h 22m

C$ 432

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 27/3

5:11 p.m.-9:58 p.m.

1 stop5h 47m

Lambert-St Louis

Mon 30/3

10:00 a.m.-5:07 p.m.

1 stop6h 07m

C$ 436

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 20/4

12:30 p.m.-11:46 p.m.

1 stop12h 16m

Lambert-St Louis

Sat 25/4

5:21 p.m.-11:44 a.m.

1 stop17h 23m

C$ 477

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 1/3

7:15 a.m.-3:29 p.m.

1 stop9h 14m

Lambert-St Louis

Wed 4/3

4:05 p.m.-11:18 p.m.

1 stop6h 13m

C$ 502

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 1/3

5:00 a.m.-3:29 p.m.

1 stop11h 29m

Lambert-St Louis

Wed 4/3

6:25 a.m.-2:27 p.m.

2 stops7h 02m

C$ 563

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 13/3

9:10 a.m.-3:29 p.m.

1 stop7h 19m

Lambert-St Louis

Sun 15/3

4:05 p.m.-11:32 p.m.

1 stop6h 27m

C$ 624

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 10/5

6:45 p.m.-11:59 p.m.

1 stop6h 14m

Lambert-St Louis

Sat 16/5

6:04 p.m.-11:13 p.m.

1 stop4h 09m

C$ 645

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sun 10/5

6:10 p.m.-8:05 p.m.

Nonstop2h 55m

Lambert-St Louis

Sat 16/5

7:30 a.m.-3:21 p.m.

1 stop6h 51m

C$ 650

Québec CitySt. Louis

YQB - STL

YQBSTL

Québec City

Sat 23/5

4:55 p.m.-11:27 p.m.

1 stop7h 32m

Lambert-St Louis

Wed 27/5

11:25 a.m.-10:43 p.m.

2 stops10h 18m

C$ 740

Québec CitySt. Louis

YQB - STL

YQBSTL

Québec City

Sat 23/5

2:50 p.m.-8:05 p.m.

1 stop6h 15m

Lambert-St Louis

Wed 27/5

7:30 a.m.-4:56 p.m.

2 stops8h 26m

C$ 755

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 27 results
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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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, March is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 536). Flying from Quebec to St. Louis in January is currently the most expensive (average of C$ 875). 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.

Related info for your journey

Find useful and relevant information for your journey from Quebec to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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, American Airlines, and Air Canada fly from Quebec to St. Louis in about 7h 19m. The time it takes to get you to your destination can typically vary by up to 4h 57m. Quebec and St. Louis are separated by a distance of 1556 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, Québec City - Lambert-St Louis or Ottawa - Lambert-St Louis when deciding on the best route from Quebec to St. Louis.

  • What are the cheapest flights from Quebec to St. Louis?

    On average you can expect to pay C$ 490 for a flight from Quebec to St. Louis. The cheapest flight overall is C$ 490 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis) is currently priced at C$ 528.

  • 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, March is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 536). Flying from Quebec to St. Louis in January is currently the most expensive (average of C$ 875). 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
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Top 3 airlines flying from Quebec to St. Louis

Discover the top 3 airlines that operate flights from Quebec to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 7 February 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 450AverageC$ 625FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 535AverageC$ 749FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 695AverageC$ 992FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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

Cheapflights makes it easy to find Quebec to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Quebec to St. Louis for you. Better yet — we are completely free to use.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from Quebec to St. Louis flexibly with Cheapflights today.

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

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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