$220+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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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
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Best
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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 October 25, 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 October 25, 2026.
This Mytrip deal was found by Cheapflights users on 10/25. 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.
Thu 12/104:40 pm -
3 stops19h 37m
Mon 12/1412:02 pm -
3 stops26h 58m
Deal found 10/25![Multiple Airlines logo]()
$391
This American Airlines deal was found by Cheapflights users on 10/21. 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 12/1012:08 pm -
1 stop11h 09m
Mon 12/148:24 pm -
1 stop14h 04m
Deal found 10/21![American Airlines logo]()
$410
This Mytrip deal was found by Cheapflights users on 10/20. 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.
Tue 12/14:40 pm -
3 stops19h 30m
Mon 12/712:02 pm -
3 stops26h 58m
Deal found 10/20![Multiple Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 10/20. 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 11/1812:10 pm -
1 stop11h 05m
Sun 11/228:12 pm -
1 stop14h 14m
Deal found 10/20![American Airlines logo]()
$452
This American Airlines deal was found by Cheapflights users on 10/21. 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 11/1912:10 pm -
1 stop8h 54m
Thu 11/2612:44 pm -
2 stops25h 42m
Deal found 10/21![American Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/206:10 pm -
1 stop15h 45m
Fri 11/277:30 am -
1 stop8h 37m
Deal found 10/23![United Airlines logo]()
$496
This American Airlines deal was found by Cheapflights users on 10/21. 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.
Sun 12/204:00 pm -
1 stop17h 29m
Thu 12/316:00 am -
1 stop8h 14m
Deal found 10/21![American Airlines logo]()
$508
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/1912:10 pm -
1 stop8h 54m
Sat 11/218:12 pm -
1 stop14h 14m
Deal found 10/25![American Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 10/21. 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 11/199:25 am -
1 stop13h 15m
Thu 11/266:00 am -
1 stop10h 07m
Deal found 10/21![United Airlines logo]()
$531
This Mytrip deal was found by Cheapflights users on 10/23. 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.
Tue 11/246:45 am -
2 stops18h 14m
Mon 11/306:35 pm -
3 stops23h 37m
Deal found 10/23![Multiple Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/106:00 am -
2 stops14h 23m
Mon 11/306:50 pm -
2 stops20h 51m
Deal found 10/25![United Airlines logo]()
$734
This United Airlines deal was found by Cheapflights users on 10/24. 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 11/1212:45 pm -
1 stop10h 07m
Sun 11/156:00 am -
1 stop9h 41m
Deal found 10/24![United Airlines logo]()
$757
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 October 25, 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 October 25, 2026.
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/208:05 am -
2 stops14h 35m
Fri 11/277:30 am -
1 stop8h 37m
Deal found 10/23![United Airlines logo]()
$496
This Delta deal was found by Cheapflights users on 10/20. 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 11/2610:35 am -
1 stop27h 05m
Wed 12/29:33 am -
1 stop8h 21m
Deal found 10/20![Delta logo]()
$700
This United Airlines deal was found by Cheapflights users on 10/21. 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 11/199:25 am -
1 stop13h 15m
Thu 11/266:00 am -
1 stop10h 07m
Deal found 10/21![United Airlines logo]()
$531
This United Airlines deal was found by Cheapflights users on 10/21. 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 2/21:10 pm -
1 stop9h 27m
Wed 2/37:29 am -
1 stop10h 28m
Deal found 10/21![United Airlines logo]()
$531
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/181:10 pm -
1 stop11h 28m
Wed 12/307:18 am -
1 stop10h 49m
Deal found 10/21![United Airlines logo]()
$549
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/244:45 pm -
1 stop17h 10m
Mon 11/307:30 am -
1 stop8h 37m
Deal found 10/23![United Airlines logo]()
$624
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/269:15 am -
2 stops13h 07m
Wed 12/309:35 am -
1 stop8h 32m
Deal found 10/23![United Airlines logo]()
$624
This United Airlines deal was found by Cheapflights users on 10/24. 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 12/209:25 am -
1 stop15h 13m
Wed 12/309:35 am -
1 stop8h 32m
Deal found 10/24![United Airlines logo]()
$639
This United Airlines deal was found by Cheapflights users on 10/20. 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 1/268:29 am -
1 stop6h 59m
Thu 1/285:02 am -
2 stops10h 39m
Deal found 10/20![United Airlines logo]()
$649
This United Airlines deal was found by Cheapflights users on 10/20. 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 11/237:00 am -
1 stop15h 52m
Thu 11/267:30 am -
2 stops13h 12m
Deal found 10/20![United Airlines logo]()
$660
This United Airlines deal was found by Cheapflights users on 10/24. 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 11/219:15 am -
2 stops15h 09m
Sat 11/281:08 pm -
1 stop7h 09m
Deal found 10/24![United Airlines logo]()
$691
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/106:00 am -
2 stops14h 23m
Mon 11/306:50 pm -
2 stops20h 51m
Deal found 10/25![United Airlines logo]()
$734
This United Airlines deal was found by Cheapflights users on 10/24. 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 11/126:00 am -
2 stops13h 09m
Sun 11/158:30 am -
2 stops13h 17m
Deal found 10/24![United Airlines logo]()
$757
Last-minute flights from Quebec to St. LouisDiscover last-minute flight deals from Quebec to St. Louis. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Quebec to St. Louis. Data last updated October 25, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/25. 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 11/106:00 am -
2 stops14h 23m
Mon 11/306:50 pm -
2 stops20h 51m
Deal found 10/25![United Airlines logo]()
$734
This American Airlines deal was found by Cheapflights users on 10/20. 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 11/1812:10 pm -
1 stop11h 05m
Sun 11/228:12 pm -
1 stop14h 14m
Deal found 10/20![American Airlines logo]()
$452
This Mytrip deal was found by Cheapflights users on 10/20. 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.
Wed 11/182:15 pm -
3 stops34h 01m
Fri 11/206:35 pm -
3 stops20h 25m
Deal found 10/20![Multiple Airlines logo]()
$551
This Mytrip deal was found by Cheapflights users on 10/20. 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.
Wed 11/182:15 pm -
3 stops34h 01m
Sun 11/226:05 pm -
3 stops20h 55m
Deal found 10/20![Multiple Airlines logo]()
$557
This American Airlines deal was found by Cheapflights users on 10/21. 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 11/1912:10 pm -
1 stop8h 54m
Thu 11/2612:44 pm -
2 stops25h 42m
Deal found 10/21![American Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/1912:10 pm -
1 stop8h 54m
Sat 11/218:12 pm -
1 stop14h 14m
Deal found 10/25![American Airlines logo]()
$523
This United Airlines deal was found by Cheapflights users on 10/21. 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 11/199:25 am -
1 stop13h 15m
Thu 11/266:00 am -
1 stop10h 07m
Deal found 10/21![United Airlines logo]()
$531
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/206:10 pm -
1 stop15h 45m
Fri 11/277:30 am -
1 stop8h 37m
Deal found 10/23![United Airlines logo]()
$496
This American Airlines deal was found by Cheapflights users on 10/20. 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.
Sun 11/2212:10 pm -
1 stop23h 24m
Tue 12/17:26 am -
2 stops14h 25m
Deal found 10/20![American Airlines logo]()
$604
This American Airlines deal was found by Cheapflights users on 10/21. 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 11/231:03 pm -
2 stops11h 58m
Fri 11/277:13 am -
2 stops13h 13m
Deal found 10/21![American Airlines logo]()
$605
This Mytrip deal was found by Cheapflights users on 10/23. 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.
Tue 11/246:45 am -
2 stops18h 14m
Mon 11/306:35 pm -
3 stops23h 37m
Deal found 10/23![Multiple Airlines logo]()
$535
This United Airlines deal was found by Cheapflights users on 10/23. 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 11/244:45 pm -
1 stop17h 10m
Mon 11/307:30 am -
1 stop8h 37m
Deal found 10/23![United Airlines logo]()
$624
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 October 25, 2026.
Search for one-way flight options from Quebec to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This American Airlines deal was found by Cheapflights users on 10/23. 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 12/712:08 pm -
1 stop12h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![American Airlines logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Tue 12/84:40 pm -
3 stops19h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$225
This American Airlines deal was found by Cheapflights users on 10/23. 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 11/2412:10 pm -
1 stop8h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![American Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 12/34:40 pm -
3 stops19h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Multiple Airlines logo]()
$244
This American Airlines deal was found by Cheapflights users on 10/24. 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 12/312:08 pm -
1 stop8h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![American Airlines logo]()
$246
This American Airlines deal was found by Cheapflights users on 10/24. 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 12/812:08 pm -
1 stop12h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![American Airlines logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 12/69:45 am -
3 stops28h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$256
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 12/79:45 am -
3 stops28h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 10/23. 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.
Tue 11/249:45 am -
3 stops28h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Multiple Airlines logo]()
$264
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 October 25, 2026.
Round-trip from | $391 (Mytrip) |
|---|---|
One-way from | $220 (American Airlines) |
Popular in | December |
Cheapest in | June |
Average price | $538 |
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 October 25, 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
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Mon 12/7
12:08 pm-12:02 am
1 stop12h 54m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$220
Quickest round-trip
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Tue 11/24
12:10 pm-7:50 pm
1 stop8h 40m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$238
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Thu 12/3
4:40 pm-11:17 am
3 stops19h 37m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$244
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Thu 12/3
12:08 pm-7:58 pm
1 stop8h 50m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$246
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Sun 12/6
9:45 am-1:21 pm
3 stops28h 36m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$256
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Tue 12/8
1:04 pm-12:02 am
2 stops11h 58m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$258
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Tue 11/24
9:45 am-1:31 pm
3 stops28h 46m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$264
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Tue 11/24
6:50 pm-3:43 pm
2 stops21h 53m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$283
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Sun 12/6
9:25 am-10:59 pm
1 stop14h 34m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$305
MontrealSt. Louis
YUL Montreal Pierre Elliott Trudeau Intl - STL Lambert-St Louis
YULSTL
Montreal Pierre Elliott Trudeau Intl
Wed 12/23
9:25 am-7:02 pm
1 stop10h 37m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$369
Showing 1-10 of 24 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
YQB-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
YQB-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 January is currently the most expensive (average of $889). 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 October 25, 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.
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 $617 and $776 in December.The cheapest round-trip price found within the last 5 days was $391 on Multiple Airlines (Dec 10-Dec 14).
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
Wentzville
Maryland Heights
Chesterfield
Collinsville
Edwardsville
Glencoe
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Alternative routes for Quebec to St. Louis
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Quebec and St. Louis flights
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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 October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$478 | Average$567 | FlexibilityNo cancel fee | On-time67% |