Quebec

$158+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YUL
Apr 22 — Apr 291
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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 April 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$380
(Flightnetwork)

One-way from

$158
(Kiwi.com)

Popular in

June

Cheapest in

August

Average price

$578

Good round-trip deal

$991 or less

Good one-way deal

$487 or less
Provider with most accurate pricing for Lambert-St Louis-Montreal (YMQ) flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Montreal (YMQ) flights.
From Lambert-St Louis to Quebec
One-way flight from Lambert-St Louis to Quebec
Highest demand for flights based on searches. 5% potential increase in price ($32 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Lambert-St Louis to Quebec.
Price to beat on a one-way flight from Lambert-St Louis to Quebec.

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 April 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/2510:10 amSTL - YOW
1 stop30h 05mMultiple Airlines
Fri 5/303:50 pmYOW - STL
1 stop18h 25mMultiple Airlines
Deal found 4/16$340
This Flightnetwork deal was found by Cheapflights users on 4/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/101:30 pmSTL - YQB
1 stop5h 06mAir Canada
Sun 5/185:20 amYQB - STL
1 stop8h 16mAir Canada
Deal found 4/16$380
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Mon 8/44:00 pmSTL - YQB
1 stop5h 00mUnited Airlines
Fri 8/810:25 amYQB - STL
1 stop5h 56mUnited Airlines
Deal found 4/17$409
This Kiwi.com deal was found by Cheapflights users on 4/17. 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 5/1510:10 amSTL - YUL
2 stops13h 27mMultiple Airlines
Thu 5/226:45 amYUL - STL
1 stop18h 07mMultiple Airlines
Deal found 4/17$413
This American Airlines deal was found by Cheapflights users on 4/16. 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 8/47:23 amSTL - YQB
1 stop5h 17mAmerican Airlines
Fri 8/812:06 pmYQB - STL
2 stops9h 17mAmerican Airlines
Deal found 4/16$420
This Booking.com deal was found by Cheapflights users on 4/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/21:30 pmSTL - YUL
Nonstop2h 30mAir Canada
Sun 5/46:10 pmYUL - STL
Nonstop2h 48mAir Canada
Deal found 4/16$463
This Delta deal was found by Cheapflights users on 4/16. 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 5/276:00 amSTL - YUL
1 stop9h 04mDelta
Wed 5/285:00 pmYUL - STL
1 stop16h 07mDelta
Deal found 4/16$470
This American Airlines deal was found by Cheapflights users on 4/16. 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 6/116:04 amSTL - YUL
1 stop9h 41mAmerican Airlines
Tue 6/1712:30 pmYUL - STL
1 stop9h 00mAmerican Airlines
Deal found 4/16$489
This United Airlines deal was found by Cheapflights users on 4/16. 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 5/288:15 amSTL - YUL
1 stop6h 34mUnited Airlines
Wed 5/286:10 pmYUL - STL
Nonstop2h 48mUnited Airlines
Deal found 4/16$508
This Mytrip deal was found by Cheapflights users on 4/16. 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.
Sat 5/109:40 amSTL - YQB
2 stops8h 56mMultiple Airlines
Sun 5/185:20 amYQB - STL
3 stops38h 21mMultiple Airlines
Deal found 4/16$529
This Kiwi.com deal was found by Cheapflights users on 4/16. 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.
Sat 5/245:17 pmSTL - YUL
1 stop4h 59mWestJet
Sat 5/316:00 amYUL - STL
1 stop4h 35mWestJet
Deal found 4/16$606
This Air Canada deal was found by Cheapflights users on 4/16. 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 5/251:30 pmSTL - YOW
1 stop5h 47mAir Canada
Fri 5/304:05 pmYOW - STL
1 stop4h 53mAir Canada
Deal found 4/16$735

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 April 17, 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

Sun 5/25

10:10 am-5:15 pm

1 stop30h 05m

Ottawa

Fri 5/30

3:50 pm-9:15 am

1 stop18h 25m

$340

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 5/10

9:40 am-7:36 pm

2 stops8h 56m

Québec City

Sun 5/18

5:20 am-12:36 pm

1 stop8h 16m

$380

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 8/4

4:00 pm-10:00 pm

1 stop5h 00m

Québec City

Fri 8/8

10:25 am-3:21 pm

1 stop5h 56m

$409

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 5/15

10:10 am-12:37 am

2 stops13h 27m

Montreal Pierre Elliott Trudeau Intl

Thu 5/22

6:45 am-11:52 pm

1 stop18h 07m

$413

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Mon 8/4

7:23 am-1:40 pm

1 stop5h 17m

Québec City

Fri 8/8

12:06 pm-8:23 pm

2 stops9h 17m

$420

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Fri 5/2

1:30 pm-5:00 pm

Nonstop2h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 5/4

6:10 pm-7:58 pm

Nonstop2h 48m

$463

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Tue 5/27

6:00 am-4:04 pm

1 stop9h 04m

Montreal Pierre Elliott Trudeau Intl

Wed 5/28

5:00 pm-8:07 am

1 stop16h 07m

$470

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 6/11

6:04 am-4:45 pm

1 stop9h 41m

Montreal Pierre Elliott Trudeau Intl

Tue 6/17

12:30 pm-8:30 pm

1 stop9h 00m

$489

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 5/28

8:15 am-3:49 pm

1 stop6h 34m

Montreal Pierre Elliott Trudeau Intl

Wed 5/28

6:10 pm-7:58 pm

Nonstop2h 48m

$508

St. LouisQuébec City

STL - YQB

STLYQB

Lambert-St Louis

Sat 5/10

9:40 am-7:36 pm

2 stops8h 56m

Québec City

Sun 5/18

5:20 am-6:41 pm

3 stops38h 21m

$529

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 26 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 April 17, 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.

Rainfall in Quebec by month

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

In terms of precipitation, rainfall in Quebec ranges from 2.5 - 4.4 inches per month. August is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Quebec when rainfall is around 2.5 in.

Temperature in Quebec by month

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

If weather is an important factor for your trip to Quebec, 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 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

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 April 17, 2025.
Read through reviews of airlines operating flights from St. Louis to Quebec, such as Delta, United Airlines and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good
8.0
Very good

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at $162. American Airlines flights start at $175 while deals on United Airlines start at $187 one-way.

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

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

    On average you can expect to pay $2,215 for a flight from St. Louis to Quebec. The cheapest flight overall is $259 while the most popular route, (Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl) is currently priced at $419.

  • 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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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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$213Average$640FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$246Average$588FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$300Average$708FlexibilityNo cancel feeOn-time71%
DeltaCheapest$472Average$660FlexibilityNo cancel feeOn-timeN/A

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