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St. Louis

$205+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
Mar 11 — Mar 181
Wed 3/11
Wed 3/18
1 adult, Economy
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Cheap 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 February 9, 2026.

This United Airlines deal was found by Cheapflights users on 2/8. 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 2/235:48 pm
YOW
-
STL
1 stop7h 11m
United Airlines
Wed 2/257:00 am
STL
-
YOW
1 stop5h 34m
United Airlines
Deal found 2/8$301
This American Airlines deal was found by Cheapflights users on 2/7. 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 4/2012:30 pm
YUL
-
STL
1 stop10h 47m
American Airlines
Sat 4/255:21 pm
STL
-
YUL
1 stop17h 23m
American Airlines
Deal found 2/7$311
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Thu 4/910:44 am
YOW
-
STL
1 stop11h 24m
United Airlines
Sat 4/117:45 am
STL
-
YOW
1 stop8h 22m
United Airlines
Deal found 2/6$316
This United Airlines deal was found by Cheapflights users on 2/6. 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.
Fri 3/275:11 pm
YOW
-
STL
1 stop5h 12m
United Airlines
Mon 3/3011:15 am
STL
-
YOW
1 stop4h 52m
United Airlines
Deal found 2/6$319
This Air Canada deal was found by Cheapflights users on 2/5. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/17:15 am
YOW
-
STL
1 stop9h 14m
Air Canada
Wed 3/44:05 pm
STL
-
YOW
1 stop6h 13m
Air Canada
Deal found 2/5$367
This American Airlines deal was found by Cheapflights users on 2/7. 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 4/32:25 pm
YUL
-
STL
1 stop19h 10m
American Airlines
Sat 4/118:03 pm
STL
-
YUL
1 stop14h 41m
American Airlines
Deal found 2/7$385
This United Airlines deal was found by Cheapflights users on 2/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/15:00 am
YOW
-
STL
1 stop11h 29m
United Airlines
Wed 3/46:25 am
STL
-
YOW
2 stops7h 02m
United Airlines
Deal found 2/5$412
This United Airlines deal was found by Cheapflights users on 2/7. 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 3/246:25 pm
YUL
-
STL
1 stop19h 02m
United Airlines
Tue 3/3110:00 am
STL
-
YUL
1 stop7h 55m
United Airlines
Deal found 2/7$447
This Air Canada deal was found by Cheapflights users on 2/7. 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.
Sat 6/276:10 pm
YUL
-
STL
Nonstop2h 55m
Air Canada
Sun 6/281:15 pm
STL
-
YUL
Nonstop2h 35m
Air Canada
Deal found 2/7$454
This American Airlines deal was found by Cheapflights users on 2/6. 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 4/96:45 am
YOW
-
STL
2 stops10h 56m
American Airlines
Sat 4/115:21 pm
STL
-
YOW
2 stops24h 05m
American Airlines
Deal found 2/6$467
This Delta deal was found by Cheapflights users on 2/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/106:45 pm
YUL
-
STL
1 stop6h 14m
Delta
Sat 5/166:04 pm
STL
-
YUL
1 stop4h 09m
Delta
Deal found 2/5$472
This Air Canada deal was found by Cheapflights users on 2/6. 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 5/106:10 pm
YUL
-
STL
Nonstop2h 55m
Air Canada
Sat 5/167:30 am
STL
-
YUL
1 stop6h 51m
Air Canada
Deal found 2/6$475

Find 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 February 9, 2026.

Round-trip from

$301
(United Airlines)

One-way from

$205
(American Airlines)

Popular in

March

Cheapest in

July

Average price

$463
From Quebec to Lambert-St Louis
Search Deals
One-way flight from Quebec to Lambert-St Louis
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 February 9, 2026.
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

Mon 2/23

5:48 pm-11:59 pm

1 stop7h 11m

Lambert-St Louis

Wed 2/25

7:00 am-1:34 pm

1 stop5h 34m

$301

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Mon 4/20

12:30 pm-10:17 pm

1 stop10h 47m

Lambert-St Louis

Sat 4/25

5:21 pm-11:44 am

1 stop17h 23m

$311

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Thu 4/9

10:44 am-9:08 pm

1 stop11h 24m

Lambert-St Louis

Sat 4/11

7:45 am-5:07 pm

1 stop8h 22m

$316

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 3/27

5:11 pm-9:23 pm

1 stop5h 12m

Lambert-St Louis

Mon 3/30

11:15 am-5:07 pm

1 stop4h 52m

$319

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 4/3

2:25 pm-8:35 am

1 stop19h 10m

Lambert-St Louis

Sat 4/11

8:03 pm-11:44 am

1 stop14h 41m

$385

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Sun 3/1

5:00 am-3:29 pm

1 stop11h 29m

Lambert-St Louis

Wed 3/4

6:25 am-2:27 pm

2 stops7h 02m

$412

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 3/24

6:25 pm-12:27 pm

1 stop19h 02m

Lambert-St Louis

Tue 3/31

10:00 am-6:55 pm

1 stop7h 55m

$447

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 3/26

1:10 pm-9:15 pm

1 stop9h 05m

Lambert-St Louis

Mon 3/30

10:00 am-6:55 pm

1 stop7h 55m

$447

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 3/6

8:50 am-3:29 pm

2 stops7h 39m

Lambert-St Louis

Mon 3/9

4:05 pm-8:16 am

1 stop15h 11m

$537

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 4/4

6:00 am-10:56 am

1 stop5h 56m

Lambert-St Louis

Sat 4/11

9:10 am-7:45 pm

2 stops9h 35m

$543

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/7

Showing 1-10 of 18 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 January is currently the most expensive (average of $640). 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.

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 $301, United Airlines can have you in St. Louis from Quebec in 7h 11m. 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 Air Canada, with whom users have recently found tickets for as low as $196. However, be on the lookout for offers from United Airlines and Delta, as they are both options that can get you from Quebec to St. Louis for a low price.

  • 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 January is currently the most expensive (average of $640). 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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 February 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$435Average$584FlexibilityNo cancel feeOn-time67%
DeltaCheapest$452Average$542FlexibilityNo cancel feeOn-timeN/A

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