$211+ Cheap flights from Quebec to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
Oct 11 — Oct 181
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Quebec to St. Louis with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Quebec to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Quebec to St. LouisExplore 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 September 11, 2026.
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 September 11, 2026.
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 10/205:34 pm -
1 stop18h 16m
Sat 10/247:28 am -
1 stop8h 24m
Deal found 9/9![American Airlines logo]()
$422
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Fri 10/162:50 pm -
1 stop4h 51m
Mon 10/264:05 pm -
1 stop6h 50m
Deal found 9/9![Air Canada logo]()
$446
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:50 pm -
1 stop4h 51m
Tue 10/202:40 pm -
1 stop5h 40m
Deal found 9/8![Air Canada logo]()
$450
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:55 pm -
Nonstop2h 46m
Tue 10/2012:10 pm -
Nonstop2h 31m
Deal found 9/8![Air Canada logo]()
$477
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Tue 10/204:55 pm -
Nonstop2h 46m
Thu 10/2212:10 pm -
Nonstop2h 31m
Deal found 9/9![Air Canada logo]()
$478
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Fri 10/234:55 pm -
Nonstop2h 46m
Tue 11/34:05 pm -
1 stop7h 20m
Deal found 9/9![Air Canada logo]()
$479
This Air Canada deal was found by Cheapflights users on 9/7. 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.
Thu 10/12:50 pm -
1 stop4h 51m
Fri 10/162:40 pm -
1 stop5h 40m
Deal found 9/7![Air Canada logo]()
$489
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Thu 9/2410:10 am -
1 stop4h 50m
Sun 9/272:40 pm -
1 stop4h 41m
Deal found 9/9![Air Canada logo]()
$494
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/210:30 am -
1 stop11h 46m
Sat 10/315:21 pm -
1 stop18h 04m
Deal found 9/10![American Airlines logo]()
$497
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/310:30 am -
2 stops11h 14m
Sat 10/315:00 am -
1 stop10h 52m
Deal found 9/10![American Airlines logo]()
$500
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/2310:32 am -
1 stop11h 20m
Tue 11/37:26 am -
2 stops13h 00m
Deal found 9/9![American Airlines logo]()
$506
This Air Canada deal was found by Cheapflights users on 9/6. 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.
Mon 10/122:50 pm -
1 stop4h 51m
Sun 10/188:55 am -
1 stop5h 15m
Deal found 9/6![Air Canada logo]()
$511
Best flights from Quebec to St. LouisDiscover carefully curated flight deals from Quebec to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
Discover carefully curated flight deals from Quebec to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 11, 2026.
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Fri 10/162:50 pm -
1 stop4h 51m
Mon 10/264:05 pm -
1 stop6h 50m
Deal found 9/9![Air Canada logo]()
$446
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/226:00 am -
3 stops16h 21m
Sun 10/256:50 pm -
2 stops17h 21m
Deal found 9/11![United Airlines logo]()
$523
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:50 pm -
1 stop4h 51m
Tue 10/202:40 pm -
1 stop5h 40m
Deal found 9/8![Air Canada logo]()
$450
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/65:20 pm -
1 stop5h 01m
Tue 10/139:04 am -
2 stops13h 50m
Deal found 9/7![United Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Thu 9/245:20 pm -
1 stop5h 01m
Mon 9/287:30 am -
1 stop8h 08m
Deal found 9/7![United Airlines logo]()
$523
This Air Canada deal was found by Cheapflights users on 9/9. 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 1/2311:10 am -
1 stop5h 16m
Wed 1/274:05 pm -
1 stop4h 55m
Deal found 9/9![Air Canada logo]()
$526
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Thu 10/16:00 am -
3 stops10h 43m
Fri 10/168:00 am -
1 stop8h 16m
Deal found 9/7![United Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/86:25 am -
1 stop6h 48m
Thu 10/157:30 am -
1 stop8h 08m
Deal found 9/10![United Airlines logo]()
$524
This United Airlines deal was found by Cheapflights users on 9/10. 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 2/29:25 am -
1 stop8h 28m
Wed 2/37:30 am -
1 stop8h 37m
Deal found 9/10![United Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 9/9. 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 1/238:05 am -
2 stops14h 42m
Wed 1/278:05 am -
1 stop8h 02m
Deal found 9/9![United Airlines logo]()
$536
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/204:25 pm -
2 stops20h 48m
Thu 10/228:00 am -
1 stop27h 00m
Deal found 9/9![United Airlines logo]()
$557
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/151:15 pm -
1 stop9h 06m
Mon 10/195:36 pm -
1 stop16h 04m
Deal found 9/10![United Airlines logo]()
$557
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/86:00 am -
2 stops10h 43m
Tue 10/139:04 am -
1 stop7h 26m
Deal found 9/11![United Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Thu 11/197:00 am -
2 stops9h 43m
Sat 11/216:00 am -
1 stop6h 28m
Deal found 9/8![United Airlines logo]()
$572
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Wed 10/74:55 pm -
1 stop5h 26m
Mon 10/127:30 am -
1 stop7h 40m
Deal found 9/8![United Airlines logo]()
$572
Last-minute flights from Quebec to St. LouisDiscover last-minute flight deals from Quebec to St. Louis. Data last updated September 11, 2026 and is based on user searches.
Discover last-minute flight deals from Quebec to St. Louis. Data last updated September 11, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Thu 9/2410:10 am -
1 stop4h 50m
Sun 9/272:40 pm -
1 stop4h 41m
Deal found 9/9![Air Canada logo]()
$494
This Air Canada deal was found by Cheapflights users on 9/7. 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.
Thu 10/12:50 pm -
1 stop4h 51m
Fri 10/162:40 pm -
1 stop5h 40m
Deal found 9/7![Air Canada logo]()
$489
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/210:30 am -
1 stop11h 46m
Sat 10/315:21 pm -
1 stop18h 04m
Deal found 9/10![American Airlines logo]()
$497
This American Airlines deal was found by Cheapflights users on 9/10. 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 10/310:30 am -
2 stops11h 14m
Sat 10/315:00 am -
1 stop10h 52m
Deal found 9/10![American Airlines logo]()
$500
This Air Canada deal was found by Cheapflights users on 9/6. 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.
Mon 10/122:50 pm -
1 stop4h 51m
Sun 10/188:55 am -
1 stop5h 15m
Deal found 9/6![Air Canada logo]()
$511
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/152:50 pm -
1 stop4h 51m
Tue 10/202:40 pm -
1 stop5h 40m
Deal found 9/8![Air Canada logo]()
$450
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/154:55 pm -
Nonstop2h 46m
Tue 10/2012:10 pm -
Nonstop2h 31m
Deal found 9/8![Air Canada logo]()
$477
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Fri 10/162:50 pm -
1 stop4h 51m
Mon 10/264:05 pm -
1 stop6h 50m
Deal found 9/9![Air Canada logo]()
$446
This American Airlines deal was found by Cheapflights users on 9/9. 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.
Tue 10/205:34 pm -
1 stop18h 16m
Sat 10/247:28 am -
1 stop8h 24m
Deal found 9/9![American Airlines logo]()
$422
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Tue 10/204:55 pm -
Nonstop2h 46m
Thu 10/2212:10 pm -
Nonstop2h 31m
Deal found 9/9![Air Canada logo]()
$478
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Fri 10/234:55 pm -
Nonstop2h 46m
Tue 11/34:05 pm -
1 stop7h 20m
Deal found 9/9![Air Canada logo]()
$479
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/2310:32 am -
1 stop11h 20m
Tue 11/37:26 am -
2 stops13h 00m
Deal found 9/9![American Airlines logo]()
$506
One-way flights from Quebec to St. LouisSearch for one-way flight options from Quebec to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
Search for one-way flight options from Quebec to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 11/3010:20 am -
3 stops45h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Multiple Airlines logo]()
$211
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Thu 10/82:50 pm -
1 stop4h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Air Canada logo]()
$250
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:00 am -
1 stop5h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Air Canada logo]()
$254
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/82:00 pm -
3 stops28h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$259
This Air Canada deal was found by Cheapflights users on 9/9. 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.
Thu 10/84:55 pm -
Nonstop2h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Air Canada logo]()
$260
This American Airlines deal was found by Cheapflights users on 9/9. 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 10/2212:30 pm -
1 stop12h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![American Airlines logo]()
$268
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/237:15 am -
3 stops36h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Multiple Airlines logo]()
$274
This Air Canada deal was found by Cheapflights users on 9/8. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:55 pm -
Nonstop2h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/8![Air Canada logo]()
$284
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/86:00 am -
2 stops10h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/247:00 am -
1 stop17h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Multiple Airlines logo]()
$310
This Delta deal was found by Cheapflights users on 9/11. 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 9/256:47 pm -
1 stop5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Delta logo]()
$316
This United Airlines deal was found by Cheapflights users on 9/10. 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 10/89:45 am -
1 stop6h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![United Airlines logo]()
$317
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 September 11, 2026.
Round-trip from | $422 (American Airlines) |
|---|---|
One-way from | $211 (Kiwi.com) |
Popular in | December |
Cheapest in | June |
Average price | $541 |
Good round-trip deal | $550 or less |
Good one-way deal | $311 or less |
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 7,457,451 searches. Data last updated September 11, 2026.
Use the filters below to find and compare flights from Quebec to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OttawaSt. Louis
YOW Ottawa - STL Lambert-St Louis
YOWSTL
Ottawa
Mon 11/30
10:20 am-7:09 am
3 stops45h 49m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$211
OttawaSt. Louis
YOW Ottawa - STL Lambert-St Louis
YOWSTL
Ottawa
Thu 10/8
2:50 pm-6:41 pm
1 stop4h 51m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$250
OttawaSt. Louis
YOW Ottawa - STL Lambert-St Louis
YOWSTL
Ottawa
Sat 10/24
10:00 am-2:00 pm
1 stop5h 00m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$254
OttawaSt. Louis
YOW Ottawa - STL Lambert-St Louis
YOWSTL
Ottawa
Thu 10/8
2:00 pm-5:40 pm
3 stops28h 40m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$259
Quickest round-trip
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Thu 10/8
4:55 pm-6:41 pm
Nonstop2h 46m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$260
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Fri 10/23
4:55 pm-6:41 pm
Nonstop2h 46m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$260
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Thu 10/22
12:30 pm-12:19 am
1 stop12h 49m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$268
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Thu 10/22
4:55 pm-6:41 pm
Nonstop2h 46m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$284
OttawaSt. Louis
YOW Ottawa - STL Lambert-St Louis
YOWSTL
Ottawa
Sat 10/24
6:05 am-9:21 pm
2 stops16h 16m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$291
OttawaSt. Louis
YOW Ottawa - STL Lambert-St Louis
YOWSTL
Ottawa
Thu 10/8
6:00 am-3:43 pm
2 stops10h 43m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$291
Showing 1-10 of 29 resultsSorted by cheapest first
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.
YUL-STL
YOW-STL
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
CAQC-STL
YUL-STL
YOW-STL
What is the cheapest month to book a flight from Quebec to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Quebec to St. Louis (average of $442). Flying from Quebec to St. Louis in December is currently the most expensive (average of $803). 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 September 11, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Quebec to St. Louis as you normally would.
Weekly flight availability from Quebec to St. Louis
Explore weekly flight availability from Quebec to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2026.
The most flights from CAQC to STL are scheduled on a Monday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).
How much does it cost to fly round-trip from Quebec to St. Louis?
Airfare is below average for this route at the moment.
Quebec to St. Louis flights typically cost between $556 and $628 in October.The cheapest round-trip price found within the last 5 days was $422 on American Airlines (Oct 20-Oct 24).
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Edwardsville
Glencoe
Chesterfield
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.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
St. Louis flight routes
Alternative routes for Quebec to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Quebec to St. Louis by cabin class
Find flights from Quebec to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Quebec and St. Louis flights
Browse other Quebec and St. Louis flight options. Last updated on September 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 11, 2026.
Top airline flying from Quebec to St. Louis
Discover the top airline 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 7,457,451 searches. Data last updated September 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$498 | Average$567 | FlexibilityNo cancel fee | On-time67% |