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$141+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YUL
dic. 5 — dic. 121
vie. 12/5
vie. 12/12
1 adult, Economy
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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 noviembre 5, 2025.

This Air Canada deal was found by Cheapflights users on 11/3. 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.
mié. 12/174:05 pmSTL - YOW
1 stop6h 03mAir Canada
vie. 12/199:15 amYOW - STL
1 stop7h 14mAir Canada
Deal found 11/3$361
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
jue. 12/42:47 pmSTL - YUL
1 stop24h 36mMultiple Airlines
lun. 12/88:00 amYUL - STL
2 stops15h 33mMultiple Airlines
Deal found 11/4$381
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
sáb. 12/133:30 pmSTL - YUL
1 stop8h 00mMultiple Airlines
lun. 12/158:00 amYUL - STL
2 stops15h 33mMultiple Airlines
Deal found 11/3$396
This American Airlines deal was found by Cheapflights users on 11/4. 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.
mar. 12/308:01 pmSTL - YUL
1 stop18h 09mAmerican Airlines
jue. 1/83:52 pmYUL - STL
1 stop19h 29mAmerican Airlines
Deal found 11/4$422
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
jue. 11/137:02 pmSTL - YUL
2 stops20h 53mMultiple Airlines
dom. 11/164:35 pmYUL - STL
1 stop18h 05mMultiple Airlines
Deal found 11/4$455
This American Airlines deal was found by Cheapflights users on 11/4. 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.
mié. 12/35:05 amSTL - YUL
1 stop9h 05mAmerican Airlines
mié. 12/103:50 pmYUL - STL
1 stop17h 18mAmerican Airlines
Deal found 11/4$489
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
mié. 12/33:30 pmSTL - YUL
2 stops29h 55mMultiple Airlines
mié. 12/106:30 pmYUL - STL
1 stop17h 37mMultiple Airlines
Deal found 11/4$505
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
lun. 12/83:30 pmSTL - YQB
2 stops22h 50mMultiple Airlines
vie. 12/126:30 amYQB - STL
1 stop17h 03mMultiple Airlines
Deal found 11/3$528
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
dom. 12/710:42 amSTL - YQB
2 stops27h 38mMultiple Airlines
vie. 12/126:30 amYQB - STL
1 stop17h 03mMultiple Airlines
Deal found 11/3$531
This Air Canada deal was found by Cheapflights users on 11/3. 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.
jue. 12/184:05 pmSTL - YOW
1 stop6h 03mAir Canada
jue. 12/259:15 amYOW - STL
1 stop7h 14mAir Canada
Deal found 11/3$533
This United Airlines deal was found by Cheapflights users on 11/3. 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.
jue. 12/188:05 amSTL - YOW
2 stops14h 49mUnited Airlines
jue. 12/255:09 pmYOW - STL
1 stop5h 34mUnited Airlines
Deal found 11/3$544
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
sáb. 12/63:30 pmSTL - YQB
2 stops22h 50mMultiple Airlines
vie. 12/126:30 amYQB - STL
1 stop17h 03mMultiple Airlines
Deal found 11/3$555

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 noviembre 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$361
(Air Canada)

One-way from

$141
(Kiwi.com)

Popular in

October

Cheapest in

June

Average price

$672

Good round-trip deal

$847 or less

Good one-way deal

$578 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. 13% potential increase in price ($96 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 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 noviembre 5, 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

mar. 4/7

4:05 pm-11:04 pm

1 stop5h 59m

Ottawa

mié. 4/8

9:15 am-3:24 pm

1 stop7h 09m

$361

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

mar. 4/7

8:30 am-4:15 pm

1 stop6h 45m

Ottawa

mié. 4/8

6:52 am-3:21 pm

1 stop9h 29m

$363

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

jue. 2/19

7:00 am-1:34 pm

1 stop5h 34m

Ottawa

dom. 2/22

5:48 pm-12:05 am

1 stop7h 17m

$363

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

jue. 12/4

2:47 pm-4:23 pm

1 stop24h 36m

Montreal Pierre Elliott Trudeau Intl

lun. 12/8

8:00 am-10:33 pm

2 stops15h 33m

$381

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

mar. 2/17

2:19 pm-3:05 pm

1 stop23h 46m

Montreal Pierre Elliott Trudeau Intl

jue. 2/19

3:55 pm-1:49 pm

1 stop22h 54m

$414

St. LouisOttawa

STL - YOW

STLYOW

Lambert-St Louis

mié. 12/17

10:00 am-11:08 pm

2 stops12h 08m

Ottawa

vie. 12/19

9:15 am-3:29 pm

1 stop7h 14m

$446

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

mié. 12/3

5:05 am-3:10 pm

1 stop9h 05m

Montreal Pierre Elliott Trudeau Intl

mié. 12/10

3:50 pm-8:08 am

1 stop17h 18m

$489

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

jue. 2/19

6:00 am-3:05 pm

1 stop8h 05m

Montreal Pierre Elliott Trudeau Intl

dom. 2/22

7:30 am-6:03 pm

2 stops11h 33m

$526

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

lun. 12/8

3:30 pm-3:20 pm

2 stops22h 50m

Québec City

vie. 12/12

6:30 am-10:33 pm

1 stop17h 03m

$528

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

dom. 12/7

10:42 am-3:20 pm

2 stops27h 38m

Québec City

vie. 12/12

6:30 am-10:33 pm

1 stop17h 03m

$531

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 34 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 $440). 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 noviembre 5, 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.

How much does it cost to fly round-trip from St. Louis to Quebec?

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 noviembre 5, 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
8,004 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Crew

8.5

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
8,004 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Crew

8.5

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
9,001 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Crew

8.5

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
11,039 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Crew

8.5

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
10,404 reviews
Delta
7.9
Good
8,004 reviews

Boarding

8.2

Food

7.3

Comfort

7.9

Entertainment

7.9

Overall

7.9

Crew

8.5

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?

    Air Canada, United Airlines, and American Airlines can get you from St. Louis to Quebec in just under 5h 59m. Your travel time can differ by up to 17h 47m. 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 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 $1,143 for a flight from St. Louis to Quebec. The cheapest flight overall is $488 while the most popular route, (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl) is currently priced at $379.

  • 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 $440). 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.
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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 noviembre 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$211Average$774FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$246Average$757FlexibilityNo cancel feeOn-time69%
DeltaCheapest$255Average$681FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$348Average$617FlexibilityNo cancel feeOn-time71%

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