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St. Louis

$212+ Cheap flights from Quebec to St. Louis (STL)

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 7/29. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$333
(American Airlines)

One-way from

$212
(Kiwi.com)

Popular in

May

Cheapest in

July

Average price

$528

Good round-trip deal

$326 or less

Good one-way deal

$325 or less
From Quebec to Lambert-St Louis
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One-way flight from Quebec to Lambert-St Louis
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Highest demand for flights based on searches. 7% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:30 pmYUL - STL
1 stop8h 55mAmerican Airlines
Mon 9/295:55 amSTL - YUL
1 stop9h 35mAmerican Airlines
Deal found 6/11$333
This Mytrip deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/101:10 pmYUL - STL
2 stops21h 42mMultiple Airlines
Thu 7/1710:47 amSTL - YUL
3 stops26h 03mMultiple Airlines
Deal found 6/12$393
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/286:00 amYUL - STL
2 stops11h 06mDelta
Tue 9/212:00 pmSTL - YUL
1 stop8h 48mDelta
Deal found 6/11$458
This Air Canada deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/238:00 amYUL - STL
1 stop5h 36mAir Canada
Sun 6/291:30 pmSTL - YUL
Nonstop2h 30mAir Canada
Deal found 6/10$470
This United Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/194:30 pmYUL - STL
1 stop5h 45mUnited Airlines
Thu 6/268:00 amSTL - YUL
1 stop8h 26mUnited Airlines
Deal found 6/12$536
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/95:25 pmYOW - STL
1 stop5h 10mUnited Airlines
Wed 7/165:00 amSTL - YOW
1 stop15h 35mUnited Airlines
Deal found 6/11$584
This Air Canada deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/110:00 amYOW - STL
1 stop6h 21mAir Canada
Tue 8/51:30 pmSTL - YOW
1 stop4h 35mAir Canada
Deal found 6/11$585
This FlightHub deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:45 amYUL - STL
2 stops28h 55mWestJet
Mon 9/291:30 pmSTL - YUL
2 stops10h 07mWestJet
Deal found 6/10$630
This Mytrip deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/174:10 pmYOW - STL
3 stops25h 35mMultiple Airlines
Thu 6/199:50 amSTL - YOW
3 stops13h 32mMultiple Airlines
Deal found 6/11$751
This Delta deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1712:20 pmYOW - STL
2 stops12h 02mDelta
Thu 6/193:42 pmSTL - YOW
2 stops7h 40mDelta
Deal found 6/11$869

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 2,558,603 searches. Data last updated June 12, 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

Thu 9/25

12:30 pm-8:25 pm

1 stop8h 55m

Lambert-St Louis

Mon 9/29

5:55 am-4:30 pm

1 stop9h 35m

$333

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 7/10

1:10 pm-9:52 am

2 stops21h 42m

Lambert-St Louis

Thu 7/17

10:47 am-1:50 pm

3 stops26h 03m

$393

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 8/28

6:00 am-4:06 pm

2 stops11h 06m

Lambert-St Louis

Tue 9/2

12:00 pm-9:48 pm

1 stop8h 48m

$458

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 6/23

8:00 am-12:36 pm

1 stop5h 36m

Lambert-St Louis

Sun 6/29

1:30 pm-5:00 pm

Nonstop2h 30m

$470

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 8/6

6:10 pm-8:00 pm

Nonstop2h 50m

Lambert-St Louis

Mon 8/18

8:00 am-5:26 pm

1 stop8h 26m

$544

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Wed 7/9

5:25 pm-9:35 pm

1 stop5h 10m

Lambert-St Louis

Wed 7/16

5:00 am-9:35 pm

1 stop15h 35m

$584

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 8/1

10:00 am-3:21 pm

1 stop6h 21m

Lambert-St Louis

Tue 8/5

1:30 pm-7:05 pm

1 stop4h 35m

$585

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 9/25

6:45 am-10:40 am

2 stops28h 55m

Lambert-St Louis

Mon 9/29

1:30 pm-12:37 am

2 stops10h 07m

$630

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 7/29

6:45 am-10:29 am

2 stops28h 44m

$212

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 9/19

5:15 pm-9:26 am

1 stop17h 11m

$220

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 14 results
1
2

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, August is the cheapest month in which you can book a flight from Quebec to St. Louis (average of $311). Flying from Quebec to St. Louis in March is currently the most expensive (average of $356). 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 June 12, 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 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 June 12, 2025.
Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Quebec to St. Louis. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,868 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,537 reviews
Delta
8.0
Very good
7,946 reviews

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Quebec to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

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

    The cheapest airline one-way is American Airlines, with whom users have recently found tickets for as low as $220. However, be on the lookout for offers from Delta and Air Canada, as they are both options that can get you from Quebec to St. Louis for a low price.

  • 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 (100%), Air Canada (79%) or United Airlines (59%) 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?

    The cheapest flight price from Quebec to St. Louis is $323. On average you can expect to pay $326. The most popular route, (Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis), can usually be booked for $409.

  • 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 $311). Flying from Quebec to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Quebec?

Book flights to Quebec if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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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 2 airlines flying from Quebec to St. Louis

Discover the top 2 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 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$433Average$584FlexibilityNo cancel feeOn-time67%
DeltaCheapest$452Average$511FlexibilityNo cancel feeOn-timeN/A

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