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$109+ 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 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YUL
Jan 21 — Jan 281
Wed 1/21
Wed 1/28
1 adult, Economy
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Cheap 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 December 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/20. 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.
Mon 12/2210:40 amSTL - YUL
1 stop12h 50mMultiple Airlines
Sat 12/277:00 amYUL - STL
1 stop11h 30mMultiple Airlines
Deal found 12/20$851
This Delta deal was found by Cheapflights users on 12/20. 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 12/306:00 amSTL - YUL
1 stop10h 15mDelta
Thu 1/82:45 pmYUL - STL
1 stop6h 52mDelta
Deal found 12/20$873
This Air Canada deal was found by Cheapflights users on 12/20. 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.
Sun 12/214:05 pmSTL - YOW
1 stop6h 03mAir Canada
Tue 12/2310:20 amYOW - STL
1 stop6h 09mAir Canada
Deal found 12/20$880
This Kiwi.com deal was found by Cheapflights users on 12/20. 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 12/214:27 pmSTL - YOW
1 stop30h 31mMultiple Airlines
Tue 12/233:00 pmYOW - STL
2 stops32h 33mMultiple Airlines
Deal found 12/20$881
This United Airlines deal was found by Cheapflights users on 12/20. 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.
Sun 12/211:05 pmSTL - YOW
1 stop9h 49mUnited Airlines
Tue 12/239:45 amYOW - STL
2 stops7h 42mUnited Airlines
Deal found 12/20$891
This American Airlines deal was found by Cheapflights users on 12/20. 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 12/314:53 pmSTL - YUL
1 stop21h 17mAmerican Airlines
Mon 1/57:08 amYUL - STL
1 stop17h 47mAmerican Airlines
Deal found 12/20$967
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Sat 12/279:08 amSTL - YUL
1 stop5h 02mAmerican Airlines
Wed 12/3112:59 pmYUL - STL
1 stop9h 07mAmerican Airlines
Deal found 12/21$983
This American Airlines deal was found by Cheapflights users on 12/20. 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.
Fri 12/268:01 pmSTL - YUL
1 stop18h 09mAmerican Airlines
Sun 12/2812:59 pmYUL - STL
1 stop9h 12mAmerican Airlines
Deal found 12/20$1,024
This Kiwi.com deal was found by Cheapflights users on 12/21. 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 12/268:42 pmSTL - YUL
2 stops26h 48mMultiple Airlines
Fri 1/26:20 pmYUL - STL
1 stop6h 22mMultiple Airlines
Deal found 12/21$1,088
This Delta deal was found by Cheapflights users on 12/21. 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.
Fri 12/265:59 pmSTL - YUL
1 stop4h 20mDelta
Sun 12/2812:50 pmYUL - STL
1 stop8h 51mDelta
Deal found 12/21$1,110
This United Airlines deal was found by Cheapflights users on 12/20. 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 12/3011:05 amSTL - YUL
2 stops7h 43mUnited Airlines
Thu 1/82:13 pmYUL - STL
2 stops9h 45mUnited Airlines
Deal found 12/20$1,121
This American Airlines deal was found by Cheapflights users on 12/20. 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.
Mon 12/229:08 amSTL - YOW
2 stops14h 33mAmerican Airlines
Wed 12/249:10 amYOW - STL
3 stops29h 59mAmerican Airlines
Deal found 12/20$1,220

Find 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 December 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$276
(Kiwi.com)

One-way from

$109
(Kiwi.com)

Popular in

October

Cheapest in

June

Average price

$691

Good round-trip deal

$724 or less

Good one-way deal

$366 or less
Provider with most accurate pricing for Lambert-St Louis-Montreal (YMQ) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Montreal (YMQ) flights.
Search Deals
From Lambert-St Louis to Quebec
Search Deals
One-way flight from Lambert-St Louis to Quebec
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($107 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Lambert-St Louis to Quebec.
Search Deals
Price to beat on a one-way flight from Lambert-St Louis to Quebec.
Search Deals

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 December 22, 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

Tue 2/3

5:42 pm-5:13 pm

1 stop22h 31m

Ottawa

Tue 2/10

7:00 am-6:51 am

2 stops24h 51m

$281

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 1/10

5:11 pm-11:58 pm

1 stop29h 47m

Ottawa

Fri 1/16

9:30 am-10:34 pm

1 stop14h 04m

$297

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Mon 2/2

6:00 am-3:08 pm

1 stop8h 08m

Montreal Pierre Elliott Trudeau Intl

Wed 2/4

3:50 pm-10:20 am

1 stop19h 30m

$358

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Mon 1/12

3:11 pm-9:18 pm

1 stop5h 07m

Ottawa

Wed 1/14

5:11 pm-10:58 pm

1 stop6h 47m

$374

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 1/17

11:20 am-11:54 pm

2 stops11h 34m

Ottawa

Sat 1/24

5:55 pm-11:59 pm

1 stop7h 04m

$384

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Tue 2/3

6:30 am-6:52 pm

2 stops11h 22m

Ottawa

Tue 2/10

2:15 pm-10:58 pm

2 stops9h 43m

$389

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Fri 1/16

1:35 pm-7:05 am

2 stops16h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 1/25

4:35 pm-9:21 am

1 stop17h 46m

$402

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

Sat 1/10

4:49 pm-1:38 am

2 stops7h 49m

Ottawa

Fri 1/16

12:00 pm-8:58 pm

2 stops9h 58m

$417

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 2/4

6:00 am-3:08 pm

1 stop8h 08m

Montreal Pierre Elliott Trudeau Intl

Wed 2/11

3:50 pm-9:34 am

1 stop18h 44m

$422

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Tue 3/3

3:49 pm-8:15 am

2 stops15h 26m

Québec City

Fri 3/6

6:30 am-11:19 pm

1 stop17h 49m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

Showing 1-10 of 43 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 $177). Flying from St. Louis to Quebec in November is currently the most expensive (average of $512). 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 December 22, 2025.

It’s typically best to fly out from St. Louis to Quebec in the evening. Doing so could potentially save you 74% on the flight price compared to flying at noon, which is usually more expensive.

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 December 22, 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
7.9
Good
8,013 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,013 reviews
Delta
7.9
Good
8,013 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,102 reviews
Delta
7.9
Good
8,013 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,053 reviews
Delta
7.9
Good
8,013 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,551 reviews
Delta
7.9
Good
8,013 reviews

Entertainment

7.9

Overall

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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?

    American Airlines, United Airlines, and Air Canada can get you from St. Louis to Quebec in just under 5h 07m. Your travel time can differ by up to 3h 01m. The distance between St. Louis and Quebec is about 878 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $167. Air Canada flights start at $182 while deals on Delta start at $197 one-way.

  • 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 cheapest flights from St. Louis to Quebec?

    On average you can expect to pay $1,281 for a flight from St. Louis to Quebec. The cheapest flight overall is $266 while the most popular route, (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl) is currently priced at $498.

  • 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 $177). Flying from St. Louis to Quebec in November is currently the most expensive (average of $512). 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 Vancouver Intl flights
Kansas City to Vancouver Intl flights
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Columbia to Pearson Intl flights
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Joplin to Pierre Elliott Trudeau Intl flights
Columbia to Pierre Elliott Trudeau Intl flights
St. Louis to Kelowna flights
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St. Louis to Sydney flights
St. Louis to Grande Prairie flights
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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 December 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$246Average$761FlexibilityNo cancel feeOn-time69%
DeltaCheapest$255Average$681FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$318Average$749FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$348Average$617FlexibilityNo cancel feeOn-time71%

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