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Cheap flights from Quebec to St. Louis from C$ 267

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 19/9. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
5 Aug — 12 Aug1
1 adult

Cheap 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 31 July 2025.

Round-trip from

C$ 451

One-way from

C$ 267

Popular in

June

Cheapest in

July

Average price

C$ 396

Good one-way deal

C$ 496 or less
American Airlines
  • American Airlines
  • 13/9-20/9
  • 2 total stops
  • 31h 07m total
  • Quebec to St. Louis
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American Airlines
  • American Airlines
  • 19/9
  • 1 total stop
  • 17h 11m total
  • Quebec to St. Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 104 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 47 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a one-way flight from Quebec to Lambert-St Louis.
Search Deals

Find flight deals from Quebec to St. Louis

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 31 July 2025.

Sat 13/912:31 p.m.YUL - STL
1 stop10h 22mAmerican Airlines
Sat 20/92:01 p.m.STL - YUL
1 stop20h 45mAmerican Airlines
Deal found 30/7C$ 451
Mon 8/96:00 a.m.YUL - STL
1 stop27h 06mDelta
Tue 16/96:40 a.m.STL - YUL
1 stop4h 20mDelta
Deal found 29/7C$ 565
Mon 8/96:10 p.m.YUL - STL
Nonstop2h 47mAir Canada
Tue 16/99:15 a.m.STL - YUL
1 stop6h 05mAir Canada
Deal found 29/7C$ 591
Wed 27/86:15 a.m.YUL - STL
1 stop10h 29mUnited Airlines
Wed 3/97:04 p.m.STL - YUL
1 stop14h 36mUnited Airlines
Deal found 30/7C$ 616
Fri 12/97:00 a.m.YUL - STL
3 stops10h 35mMultiple Airlines
Fri 19/91:00 p.m.STL - YUL
3 stops25h 20mMultiple Airlines
Deal found 29/7C$ 666
Sat 13/911:15 a.m.YQB - STL
1 stop5h 03mAir Canada
Sat 20/94:05 p.m.STL - YQB
1 stop5h 05mAir Canada
Deal found 29/7C$ 722
Fri 22/84:14 p.m.YQB - STL
1 stop29h 36mAmerican Airlines
Fri 29/81:42 p.m.STL - YQB
1 stop23h 02mAmerican Airlines
Deal found 30/7C$ 764
Sat 13/95:20 a.m.YQB - STL
2 stops11h 24mUnited Airlines
Sat 20/93:20 p.m.STL - YQB
1 stop21h 56mUnited Airlines
Deal found 29/7C$ 798
Mon 22/125:09 p.m.YOW - STL
1 stop6h 34mUnited Airlines
Mon 5/111:05 a.m.STL - YOW
1 stop9h 13mUnited Airlines
Deal found 30/7C$ 864
Fri 22/85:50 a.m.YQB - STL
3 stops11h 55mMultiple Airlines
Fri 29/82:30 p.m.STL - YQB
3 stops28h 06mMultiple Airlines
Deal found 30/7C$ 911
Mon 22/129:45 a.m.YOW - STL
2 stops13h 58mMultiple Airlines
Mon 5/19:55 a.m.STL - YOW
2 stops11h 23mMultiple Airlines
Deal found 30/7C$ 938
Mon 18/85:55 a.m.YOW - STL
2 stops18h 19mWestJet
Sun 31/85:11 p.m.STL - YOW
2 stops30h 11mWestJet
Deal found 30/7C$ 1,041

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 31 July 2025.
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

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 13/9

12:31 p.m.-9:53 p.m.

1 stop10h 22m

Lambert-St Louis

Sat 20/9

2:01 p.m.-11:46 a.m.

1 stop20h 45m

C$ 451

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 8/9

6:00 a.m.-8:06 a.m.

1 stop27h 06m

Lambert-St Louis

Tue 16/9

6:40 a.m.-12:00 p.m.

1 stop4h 20m

C$ 565

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 8/9

6:10 p.m.-7:57 p.m.

Nonstop2h 47m

Lambert-St Louis

Tue 16/9

9:15 a.m.-4:20 p.m.

1 stop6h 05m

C$ 591

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 27/8

6:15 a.m.-3:44 p.m.

1 stop10h 29m

Lambert-St Louis

Wed 3/9

7:04 p.m.-10:40 a.m.

1 stop14h 36m

C$ 616

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 12/9

7:00 a.m.-4:35 p.m.

3 stops10h 35m

Lambert-St Louis

Fri 19/9

1:00 p.m.-3:20 p.m.

3 stops25h 20m

C$ 666

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 13/8

3:50 p.m.-9:40 a.m.

1 stop18h 50m

Lambert-St Louis

Thu 14/8

5:40 p.m.-5:06 p.m.

1 stop22h 26m

C$ 668

Québec CitySt. Louis

YQB - STL

YQBSTL

Québec City

Sat 13/9

11:15 a.m.-3:18 p.m.

1 stop5h 03m

Lambert-St Louis

Sat 20/9

4:05 p.m.-10:10 p.m.

1 stop5h 05m

C$ 722

Québec CitySt. Louis

YQB - STL

YQBSTL

Québec City

Fri 22/8

4:14 p.m.-8:50 p.m.

1 stop29h 36m

Lambert-St Louis

Fri 29/8

1:42 p.m.-1:44 p.m.

1 stop23h 02m

C$ 764

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 26/8

5:25 p.m.-3:44 p.m.

1 stop23h 19m

Lambert-St Louis

Tue 2/9

7:04 p.m.-5:06 p.m.

1 stop21h 02m

C$ 768

Québec CitySt. Louis

YQB - STL

YQBSTL

Québec City

Sat 13/9

5:20 a.m.-3:44 p.m.

2 stops11h 24m

Lambert-St Louis

Sat 20/9

3:20 p.m.-2:16 p.m.

1 stop21h 56m

C$ 798

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/7

Showing 1-10 of 26 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, January is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 365). Flying from Quebec to St. Louis in September is currently the most expensive (average of C$ 491). 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?

Find hourly flight availability from Quebec to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 July 2025.

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

Explore weekly flight availability from Quebec to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 31 July 2025.

The most flights from CAQC to STL are scheduled on a Monday (2 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (1 on average).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated 31 July 2025.
Read through reviews of airlines operating flights from Quebec to St. Louis, such as Delta,United Airlines, andAmerican Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,981 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Delta
8.0
Very good
7,981 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
United Airlines
7.4
Good
8,900 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
WestJet
7.2
Good
2,978 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.
Air Canada
7.1
Good
9,851 reviews
Delta
8.0
Very good
7,981 reviews
Check prices

Comfort

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Michael,Jul 2025

AMS - ATL

Overall it was great experience, with the exception of snack food. The food offered in two main meals was just fine but for the mid-flight snack, the only option was a large cookie, too sweet and high sugar content. Snacks at the back of the plane were also mainly sweets. There was one nice baked cheddar option but it quickly ran out.

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.

  • What are the cheapest airlines to fly from Quebec to St. Louis one-way?

    C$ 267 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Iberia and Delta, with prices starting from C$ 273 and C$ 336, respectively.

  • 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 Jazz (67%), Air Canada (63%) or United Airlines (62%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay C$ 496 for a flight from Quebec to St. Louis. The cheapest flight overall is C$ 496 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis) is currently priced at C$ 511.

  • 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, January is the cheapest month in which you can book a flight from Quebec to St. Louis (average of C$ 365). Flying from Quebec to St. Louis in September is currently the most expensive (average of C$ 491). 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
St. Peters

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Alternative routes for Quebec to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 31 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 542AverageC$ 746FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 593AverageC$ 747FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 742AverageC$ 1,022FlexibilityNo 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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