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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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
22 Apr — 29 Apr1
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 17 April 2025.

Round-trip from

C$ 423

One-way from

C$ 269

Popular in

December

Cheapest in

July

Average price

C$ 702

Good round-trip deal

C$ 646 or less

Good one-way deal

C$ 420 or less
9/5-12/5
  • 9/5-12/5
  • 3 total stops
  • 47h 05m total
  • Quebec to St. Louis
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United Airlines
  • United Airlines
  • 10/7
  • 1 total stop
  • 5h 51m total
  • Quebec to St. Louis
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Highest demand for flights based on searches. 4% potential increase in price (C$ 46 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Quebec to Lambert-St Louis.
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Price to beat on a one-way flight from Quebec to Lambert-St Louis.
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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 17 April 2025.

Fri 9/56:45 a.m.YUL - STL
2 stops27h 30mMultiple Airlines
Mon 12/55:45 p.m.STL - YUL
1 stop19h 35mMultiple Airlines
Deal found 16/4C$ 423
Sat 24/53:50 p.m.YOW - STL
1 stop18h 25mMultiple Airlines
Sat 31/510:10 a.m.STL - YOW
1 stop30h 05mMultiple Airlines
Deal found 17/4C$ 485
Sun 15/65:20 a.m.YQB - STL
2 stops18h 27mUnited Airlines
Thu 19/67:30 a.m.STL - YQB
1 stop7h 15mUnited Airlines
Deal found 17/4C$ 485
Fri 9/56:10 p.m.YUL - STL
Nonstop2h 48mAir Canada
Mon 12/51:30 p.m.STL - YUL
Nonstop2h 30mAir Canada
Deal found 16/4C$ 584
Fri 19/96:10 p.m.YUL - STL
Nonstop2h 47mUnited Airlines
Sun 21/99:17 a.m.STL - YUL
1 stop7h 09mUnited Airlines
Deal found 16/4C$ 600
Tue 14/105:40 p.m.YUL - STL
1 stop17h 18mAmerican Airlines
Sun 19/1010:38 a.m.STL - YUL
1 stop4h 49mAmerican Airlines
Deal found 17/4C$ 663
Mon 28/411:20 a.m.YUL - STL
1 stop21h 55mDelta
Thu 1/56:50 a.m.STL - YUL
1 stop4h 08mDelta
Deal found 16/4C$ 678
Sat 24/55:55 a.m.YOW - STL
2 stops11h 42mWestJet
Sat 31/56:00 a.m.STL - YOW
2 stops17h 22mWestJet
Deal found 17/4C$ 825
Mon 23/62:25 p.m.YOW - STL
1 stop6h 33mAir Canada
Fri 27/61:30 p.m.STL - YOW
1 stop4h 30mAir Canada
Deal found 16/4C$ 826
Mon 23/67:29 p.m.YOW - STL
2 stops17h 51mUnited Airlines
Fri 27/65:00 a.m.STL - YOW
1 stop11h 06mUnited Airlines
Deal found 16/4C$ 868
Fri 19/97:30 a.m.YUL - STL
1 stop7h 46mWestJet
Sun 21/96:00 a.m.STL - YUL
1 stop10h 04mWestJet
Deal found 16/4C$ 940

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 17 April 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

Fri 9/5

6:45 a.m.-9:15 a.m.

2 stops27h 30m

Lambert-St Louis

Mon 12/5

5:45 p.m.-2:20 p.m.

1 stop19h 35m

C$ 423

Québec CitySt. Louis

YQB - STL

YQBSTL

Québec City

Sun 15/6

5:20 a.m.-10:47 p.m.

2 stops18h 27m

Lambert-St Louis

Thu 19/6

7:30 a.m.-3:45 p.m.

1 stop7h 15m

C$ 485

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 24/5

3:50 p.m.-9:15 a.m.

1 stop18h 25m

Lambert-St Louis

Sat 31/5

10:10 a.m.-5:15 p.m.

1 stop30h 05m

C$ 485

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 9/5

6:10 p.m.-7:58 p.m.

Nonstop2h 48m

Lambert-St Louis

Mon 12/5

1:30 p.m.-5:00 p.m.

Nonstop2h 30m

C$ 584

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 19/9

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

Nonstop2h 47m

Lambert-St Louis

Sun 21/9

9:17 a.m.-5:26 p.m.

1 stop7h 09m

C$ 600

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 14/10

5:40 p.m.-9:58 a.m.

1 stop17h 18m

Lambert-St Louis

Sun 19/10

10:38 a.m.-4:27 p.m.

1 stop4h 49m

C$ 663

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 28/4

11:20 a.m.-8:15 a.m.

1 stop21h 55m

Lambert-St Louis

Thu 1/5

6:50 a.m.-11:58 a.m.

1 stop4h 08m

C$ 678

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sat 24/5

5:55 a.m.-4:37 p.m.

2 stops11h 42m

Lambert-St Louis

Sat 31/5

6:00 a.m.-12:22 a.m.

2 stops17h 22m

C$ 825

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mon 23/6

2:25 p.m.-7:58 p.m.

1 stop6h 33m

Lambert-St Louis

Fri 27/6

1:30 p.m.-7:00 p.m.

1 stop4h 30m

C$ 826

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Mon 23/6

7:29 p.m.-12:20 p.m.

2 stops17h 51m

Lambert-St Louis

Fri 27/6

5:00 a.m.-5:06 p.m.

1 stop11h 06m

C$ 868

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/4

Showing 1-10 of 20 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 17 April 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.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

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 17 April 2025.
See what other customers who have flown with Delta, United Airlines and American Airlines from Quebec to St. Louis have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,916 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
WestJet
7.2
Good
2,809 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.0
Good
9,143 reviews
Delta
8.0
Very good
7,916 reviews
Check prices

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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$ 269 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on American Airlines and Air Canada, with prices starting from C$ 287 and C$ 324, 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 cheapest flights from Quebec to St. Louis?

    On average you can expect to pay C$ 722 for a flight from Quebec to St. Louis. The cheapest flight overall is C$ 420 while the most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis) is currently priced at C$ 423.

  • 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 Quebec?

Book flights to Quebec 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 17 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 519AverageC$ 672FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 595AverageC$ 750FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 704AverageC$ 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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