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St. Louis

$177+ 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
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 November 5, 2025.

Round-trip from

$257
(Kiwi.com)

One-way from

$177
(United Airlines)

Popular in

June

Cheapest in

July

Average price

$653
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. 4% potential increase in price ($25 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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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 November 5, 2025.

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.
Thu 12/48:00 amYUL - STL
2 stops26h 47mMultiple Airlines
Sun 12/79:54 amSTL - YUL
1 stop13h 36mMultiple Airlines
Deal found 11/4$351
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.
Thu 12/48:00 amYUL - STL
2 stops15h 33mMultiple Airlines
Thu 12/112:47 pmSTL - YUL
1 stop24h 36mMultiple Airlines
Deal found 11/4$401
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 11/164:35 pmYUL - STL
1 stop21h 42mMultiple Airlines
Tue 11/253:14 pmSTL - YUL
2 stops24h 11mMultiple Airlines
Deal found 11/5$403
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 11/164:35 pmYUL - STL
1 stop18h 05mMultiple Airlines
Mon 11/243:53 pmSTL - YUL
2 stops29h 27mMultiple Airlines
Deal found 11/5$435
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.
Fri 12/58:00 amYUL - STL
2 stops15h 33mMultiple Airlines
Sun 12/79:54 amSTL - YUL
1 stop13h 36mMultiple Airlines
Deal found 11/3$438
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 11/164:35 pmYUL - STL
1 stop18h 05mMultiple Airlines
Sun 11/233:14 pmSTL - YUL
2 stops24h 11mMultiple Airlines
Deal found 11/5$442
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/205:09 pmYOW - STL
1 stop5h 34mUnited Airlines
Mon 1/58:15 amSTL - YOW
1 stop14h 39mUnited Airlines
Deal found 11/4$461
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/42:37 pmYUL - STL
1 stop18h 43mDelta
Sun 12/76:05 amSTL - YUL
1 stop25h 40mDelta
Deal found 11/4$468
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.
Sat 12/205:40 amYOW - STL
2 stops17h 53mMultiple Airlines
Mon 1/54:27 pmSTL - YOW
1 stop30h 31mMultiple Airlines
Deal found 11/4$496
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Wed 11/196:45 amYUL - STL
1 stop28h 13mMultiple Airlines
Tue 11/253:14 pmSTL - YUL
2 stops24h 11mMultiple Airlines
Deal found 11/5$509
This American Airlines deal was found by Cheapflights users on 11/5. 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 12/193:51 pmYUL - STL
1 stop17h 44mAmerican Airlines
Sat 1/35:22 amSTL - YUL
1 stop9h 02mAmerican Airlines
Deal found 11/5$517
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:08 amYUL - STL
1 stop13h 22mAmerican Airlines
Thu 1/15:30 amSTL - YUL
1 stop5h 50mAmerican Airlines
Deal found 11/3$518

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 November 5, 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

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 1/16

9:30 am-10:37 pm

1 stop14h 07m

Lambert-St Louis

Sun 1/25

5:11 pm-5:13 pm

1 stop23h 02m

$257

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 1/23

5:11 pm-10:58 pm

1 stop6h 47m

Lambert-St Louis

Sun 1/25

6:30 am-9:18 pm

1 stop13h 48m

$300

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 1/16

5:55 pm-11:59 pm

1 stop7h 04m

Lambert-St Louis

Sun 1/25

6:30 am-4:30 pm

2 stops9h 00m

$300

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 1/23

2:50 pm-10:58 pm

2 stops9h 08m

Lambert-St Louis

Sun 1/25

6:30 am-5:42 pm

2 stops10h 12m

$352

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Tue 4/7

5:45 am-2:18 pm

2 stops9h 33m

Lambert-St Louis

Wed 4/8

4:05 pm-11:04 pm

1 stop5h 59m

$358

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 4/7

12:30 pm-9:48 pm

1 stop10h 18m

Lambert-St Louis

Wed 4/8

11:14 am-11:15 am

1 stop23h 01m

$372

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 2/17

3:55 pm-9:28 am

1 stop18h 33m

Lambert-St Louis

Wed 2/25

6:00 am-3:05 pm

1 stop8h 05m

$412

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 12/4

2:37 pm-8:20 am

1 stop18h 43m

Lambert-St Louis

Sun 12/7

6:05 am-8:45 am

1 stop25h 40m

$468

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 12/4

7:00 am-4:06 pm

1 stop10h 06m

Lambert-St Louis

Thu 12/11

9:30 am-5:25 pm

1 stop6h 55m

$509

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 12/19

3:51 pm-8:35 am

1 stop17h 44m

Lambert-St Louis

Sat 1/3

5:22 am-3:24 pm

1 stop9h 02m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 31 results
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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, March is the cheapest month in which you can book a flight from Quebec to St. Louis (average of $392). Flying from Quebec to St. Louis in August is currently the most expensive (average of $582). 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 November 5, 2025.

When flying from Quebec to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 57% versus a flight in the afternoon.

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.

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

    For as low as $300, United Airlines can have you in St. Louis from Quebec in 6h 47m. The distance from Quebec to St. Louis 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 Quebec to St. Louis one-way?

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $177. However, be on the lookout for offers from Air Canada and Delta, 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 Sun Country Air (100%), Air Canada (70%) or Jazz (70%) as they are the most reliable in getting you off to your destination on time.

  • 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, March is the cheapest month in which you can book a flight from Quebec to St. Louis (average of $392). Flying from Quebec to St. Louis in August is currently the most expensive (average of $582). 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 St. Louis?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Quebec to St. Louis

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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 November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$435Average$584FlexibilityNo cancel feeOn-time67%
DeltaCheapest$452Average$511FlexibilityNo cancel feeOn-timeN/A

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