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$116+ Cheap flights from St. Louis (STL) to Quebec

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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YUL
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from St. Louis to Quebec

Keep the following information in mind while searching for St. Louis to Quebec flight deals. Data was last updated September 16, 2025.

Round-trip from

$340
(Kiwi.com)

One-way from

$116
(American Airlines)

Popular in

February

Cheapest in

June

Average price

$692

Good round-trip deal

$704 or less

Good one-way deal

$408 or less
From Lambert-St Louis to Quebec
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One-way flight from Lambert-St Louis to Quebec
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Highest demand for flights based on searches. 13% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Lambert-St Louis to Quebec.
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Price to beat on a one-way flight from Lambert-St Louis to Quebec.
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Find flight deals from St. Louis to Quebec

Cheapest flights from St. Louis to Quebec
Explore the most affordable flight options available from St. Louis to Quebec. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:57 amSTL - YOW
1 stop29h 28mMultiple Airlines
Thu 11/65:40 amYOW - STL
2 stops33h 17mMultiple Airlines
Deal found 9/15$340
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/225:00 amSTL - YQB
1 stop8h 16mUnited Airlines
Sat 10/255:20 amYQB - STL
2 stops11h 24mUnited Airlines
Deal found 9/15$351
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/155:00 amSTL - YQB
2 stops16h 10mUnited Airlines
Wed 10/224:55 pmYQB - STL
2 stops18h 54mUnited Airlines
Deal found 9/15$371
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 10/213:23 pmSTL - YQB
1 stop21h 53mUnited Airlines
Wed 11/122:55 pmYQB - STL
1 stop25h 51mUnited Airlines
Deal found 9/14$376
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:57 amSTL - YUL
1 stop27h 13mMultiple Airlines
Thu 11/62:30 pmYUL - STL
2 stops24h 27mMultiple Airlines
Deal found 9/15$376
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 10/228:42 amSTL - YQB
1 stop27h 54mAmerican Airlines
Sat 10/254:14 pmYQB - STL
1 stop24h 50mAmerican Airlines
Deal found 9/14$389
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:45 amSTL - YUL
1 stop13h 45mMultiple Airlines
Sat 12/65:25 pmYUL - STL
2 stops18h 36mMultiple Airlines
Deal found 9/14$404
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/307:16 amSTL - YUL
1 stop8h 23mAmerican Airlines
Thu 11/63:52 pmYUL - STL
1 stop9h 04mAmerican Airlines
Deal found 9/15$408
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 10/218:04 pmSTL - YUL
1 stop14h 36mAmerican Airlines
Wed 11/127:30 amYUL - STL
2 stops13h 53mAmerican Airlines
Deal found 9/14$418
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:57 amSTL - YUL
1 stop27h 13mMultiple Airlines
Fri 10/312:30 pmYUL - STL
2 stops26h 26mMultiple Airlines
Deal found 9/15$423
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:35 amSTL - YUL
1 stop27h 15mMultiple Airlines
Sat 10/117:20 pmYUL - STL
2 stops16h 17mMultiple Airlines
Deal found 9/13$427
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/2610:57 amSTL - YUL
2 stops28h 58mMultiple Airlines
Sun 11/24:35 pmYUL - STL
1 stop18h 05mMultiple Airlines
Deal found 9/15$432

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Quebec 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 September 16, 2025.
Use the filters below to find and compare flights from St. Louis to Quebec that are best for you.

Fly from

St. Louis

Fly to

Quebec

Route

Depart

Return

Price

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Thu 10/30

10:57 am-5:25 pm

1 stop29h 28m

Ottawa

Thu 11/6

5:40 am-1:57 pm

2 stops33h 17m

$340

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Wed 10/22

5:00 am-2:16 pm

1 stop8h 16m

Québec City

Sat 10/25

5:20 am-3:44 pm

2 stops11h 24m

$351

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Wed 10/15

5:00 am-10:10 pm

2 stops16h 10m

Québec City

Wed 10/22

4:55 pm-10:49 am

2 stops18h 54m

$371

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Tue 10/21

3:23 pm-2:16 pm

1 stop21h 53m

Québec City

Wed 11/12

2:55 pm-3:46 pm

1 stop25h 51m

$376

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Wed 10/22

8:42 am-1:36 pm

1 stop27h 54m

Québec City

Sat 10/25

4:14 pm-4:04 pm

1 stop24h 50m

$389

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 10/30

7:16 am-4:39 pm

1 stop8h 23m

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

3:52 pm-11:56 pm

1 stop9h 04m

$408

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 10/21

4:34 pm-11:40 am

1 stop18h 06m

Montreal Pierre Elliott Trudeau Intl

Wed 11/12

7:30 am-8:23 pm

2 stops13h 53m

$418

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Wed 10/29

8:40 pm-5:13 pm

2 stops19h 33m

Ottawa

Wed 11/5

9:30 am-1:17 pm

1 stop28h 47m

$439

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 10/2

10:35 am-2:50 pm

1 stop27h 15m

Montreal Pierre Elliott Trudeau Intl

Sun 10/12

5:30 pm-7:26 pm

2 stops26h 56m

$451

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Fri 10/17

7:16 am-4:39 pm

1 stop8h 23m

Montreal Pierre Elliott Trudeau Intl

Mon 10/20

5:24 pm-8:09 am

1 stop15h 45m

$455

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 36 results
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Best time to book a flight from St. Louis to Quebec

Have a flexible travel schedule? Discover the best time to fly to Quebec from St. Louis 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 St. Louis to Quebec

What is the cheapest month to book a flight from St. Louis to Quebec?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Quebec (average of $270). Flying from St. Louis to Quebec in July is currently the most expensive (average of $409). 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 STL to QC?

Find hourly flight availability from St. Louis to Quebec. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from St. Louis to Quebec, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from St. Louis to Quebec

Explore weekly flight availability from St. Louis to Quebec. 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 September 16, 2025.

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

Reviews of airlines servicing Quebec

Get insights into the airlines that provide service to Quebec. 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 Quebec. Reviews last updated September 16, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from St. Louis to Quebec to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

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
7,957 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

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
8,924 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

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
7,957 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

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
10,000 reviews
Delta
8.0
Very good
7,957 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

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 St. Louis to Quebec. 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 from for flights from St. Louis to Quebec?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly out of when you book flights from St. Louis to Quebec.

  • How long is the flight from St. Louis to Quebec?

    United Airlines and American Airlines can get you from St. Louis to Quebec in just under 8h 16m. Your travel time can differ by up to 19h 38m. The distance between St. Louis and Quebec is about 1107 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from St. Louis to Quebec?

    The most popular flight routes from St. Louis to Quebec are Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl, Lambert-St Louis - Québec City and Lambert-St Louis - Ottawa.

  • What are the most reliable airlines from St. Louis to Quebec?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Quebec on time: Sun Country Air (100%), Air Canada (82%), Jazz (82%).

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

    On average you can expect to pay $2,177 for a flight from St. Louis to Quebec. The cheapest flight overall is $297 while the most popular route, (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl) is currently priced at $404.

  • Can I find deals for flights from St. Louis to Quebec that include hotel bookings?

    Yes. In addition to deals on St. Louis to Quebec flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Quebec?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Quebec.

  • Can I find deals for business class flights from St. Louis to Quebec?

    Yes. Cheapflights offers flight deals from St. Louis to Quebec 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 St. Louis to Quebec?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Quebec (average of $270). Flying from St. Louis to Quebec in July is currently the most expensive (average of $409). 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

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Alternative routes for St. Louis to Quebec

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Pearson Intl flights
St. Louis to Pierre Elliott Trudeau Intl flights
Kansas City to Pearson Intl flights
Kansas City to Vancouver Intl flights
St. Louis to Calgary flights
St. Louis to Vancouver Intl flights
Kansas City to Pierre Elliott Trudeau Intl flights
St. Louis to Québec City flights
Kansas City to Calgary flights
Kansas City to Toronto Island flights
Kansas City to Québec City flights
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Springfield to Vancouver Intl flights
Kansas City to Edmonton flights
Springfield to Pearson Intl flights
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Springfield to Pierre Elliott Trudeau Intl flights
Kansas City to Halifax flights
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St. Louis to Victoria flights
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St. Louis to St. John's flights
Springfield to Toronto Island flights
Kansas City to St. John's flights
Joplin to Pierre Elliott Trudeau Intl flights
St. Louis to Sydney flights
Kansas City to Moncton flights
Columbia to Pearson Intl flights

Top 4 airlines flying from St. Louis to Quebec

Discover the top 4 airlines that operate flights from St. Louis to Quebec. 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$193Average$719FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$246Average$761FlexibilityNo cancel feeOn-time69%
DeltaCheapest$255Average$595FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$348Average$617FlexibilityNo cancel feeOn-time71%

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