$171+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — STL
May 3 — May 101
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
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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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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 April 3, 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 April 3, 2026.
This Trip.com deal was found by Cheapflights users on 3/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/183:00 pm
YOW
- STL
1 stop6h 25m
Air Canada
Sun 5/247:05 am
STL
- YOW
1 stop5h 00m
Air Canada
Deal found 3/30![Air Canada logo]()
$265
This Air Canada deal was found by Cheapflights users on 4/1. 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 5/162:35 pm
YOW
- STL
1 stop6h 50m
Air Canada
Sat 5/237:05 am
STL
- YOW
1 stop5h 00m
Air Canada
Deal found 4/1![Air Canada logo]()
$282
This United Airlines deal was found by Cheapflights users on 3/30. 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 6/310:44 am
YOW
- STL
1 stop11h 32m
United Airlines
Sat 6/69:23 am
STL
- YOW
1 stop11h 12m
United Airlines
Deal found 3/30![United Airlines logo]()
$288
This United Airlines deal was found by Cheapflights users on 4/2. 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 6/26:00 am
YOW
- STL
2 stops10h 46m
United Airlines
Fri 6/51:13 pm
STL
- YOW
1 stop7h 22m
United Airlines
Deal found 4/2![United Airlines logo]()
$289
This Air Canada deal was found by Cheapflights users on 3/30. 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.
Wed 6/39:55 am
YOW
- STL
2 stops6h 51m
Air Canada
Sat 6/61:13 pm
STL
- YOW
1 stop7h 22m
Air Canada
Deal found 3/30![Air Canada logo]()
$341
This United Airlines deal was found by Cheapflights users on 4/1. 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 5/1612:00 pm
YOW
- STL
2 stops10h 13m
United Airlines
Sat 5/237:05 am
STL
- YOW
1 stop5h 00m
United Airlines
Deal found 4/1![United Airlines logo]()
$357
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/245:00 am
YOW
- STL
2 stops17h 13m
United Airlines
Wed 4/296:30 am
STL
- YOW
2 stops6h 57m
United Airlines
Deal found 4/1![United Airlines logo]()
$386
This Air Canada deal was found by Cheapflights users on 3/29. 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 5/147:00 am
YOW
- STL
1 stop6h 06m
Air Canada
Thu 5/217:05 am
STL
- YOW
1 stop5h 00m
Air Canada
Deal found 3/29![Air Canada logo]()
$397
This Air Canada deal was found by Cheapflights users on 4/1. 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
YUL
- STL
Nonstop2h 46m
Air Canada
Mon 10/1912:10 pm
STL
- YUL
Nonstop2h 31m
Air Canada
Deal found 4/1![Air Canada logo]()
$446
This United Airlines deal was found by Cheapflights users on 3/31. 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 10/156:00 am
YUL
- STL
2 stops10h 38m
United Airlines
Mon 10/196:01 am
STL
- YUL
1 stop6h 08m
United Airlines
Deal found 3/31![United Airlines logo]()
$452
This Delta deal was found by Cheapflights users on 3/30. 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 10/157:00 am
YUL
- STL
1 stop8h 40m
Delta
Mon 10/195:30 pm
STL
- YUL
1 stop5h 21m
Delta
Deal found 3/30![Delta logo]()
$453
This Delta deal was found by Cheapflights users on 3/30. 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.
Mon 4/206:45 pm
YUL
- STL
1 stop5h 51m
Delta
Tue 4/285:35 pm
STL
- YUL
1 stop4h 51m
Delta
Deal found 3/30![Delta logo]()
$454
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 April 3, 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 April 3, 2026.
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/247:30 pm
YOW
- STL
1 stop16h 01m
United Airlines
Wed 4/2911:15 am
STL
- YOW
1 stop4h 52m
United Airlines
Deal found 4/1![United Airlines logo]()
$288
This Air Canada deal was found by Cheapflights users on 3/30. 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.
Wed 6/39:55 am
YOW
- STL
2 stops6h 51m
Air Canada
Sat 6/61:13 pm
STL
- YOW
1 stop7h 22m
Air Canada
Deal found 3/30![Air Canada logo]()
$341
This Delta deal was found by Cheapflights users on 3/30. 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.
Mon 4/206:45 pm
YUL
- STL
1 stop5h 51m
Delta
Sat 4/255:59 pm
STL
- YUL
1 stop4h 09m
Delta
Deal found 3/30![Delta logo]()
$454
This American Airlines deal was found by Cheapflights users on 4/1. 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 5/107:45 am
YUL
- STL
1 stop6h 03m
American Airlines
Sat 5/168:03 pm
STL
- YUL
1 stop14h 41m
American Airlines
Deal found 4/1![American Airlines logo]()
$465
This United Airlines deal was found by Cheapflights users on 3/30. 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 6/310:44 am
YOW
- STL
1 stop11h 32m
United Airlines
Sat 6/69:23 am
STL
- YOW
1 stop11h 12m
United Airlines
Deal found 3/30![United Airlines logo]()
$288
This United Airlines deal was found by Cheapflights users on 4/2. 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 6/25:20 pm
YOW
- STL
1 stop4h 56m
United Airlines
Fri 6/51:13 pm
STL
- YOW
1 stop7h 22m
United Airlines
Deal found 4/2![United Airlines logo]()
$289
This Delta deal was found by Cheapflights users on 4/2. 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.
Mon 4/206:45 pm
YUL
- STL
1 stop5h 51m
Delta
Tue 4/289:59 am
STL
- YUL
1 stop6h 41m
Delta
Deal found 4/2![Delta logo]()
$471
This Gotogate deal was found by Cheapflights users on 3/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/19:30 am
YUL
- STL
2 stops11h 39m
Air Canada
Sun 5/37:05 am
STL
- YUL
1 stop5h 16m
Air Canada
Deal found 3/31![Air Canada logo]()
$479
This Delta deal was found by Cheapflights users on 3/29. 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.
Wed 4/296:00 am
YUL
- STL
1 stop8h 05m
Delta
Mon 5/45:35 pm
STL
- YUL
1 stop4h 51m
Delta
Deal found 3/29![Delta logo]()
$471
This Delta deal was found by Cheapflights users on 4/1. 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 8/276:00 am
YUL
- STL
1 stop4h 30m
Delta
Mon 8/312:18 pm
STL
- YUL
1 stop7h 52m
Delta
Deal found 4/1![Delta logo]()
$473
This United Airlines deal was found by Cheapflights users on 3/29. 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 6/256:10 am
YUL
- STL
1 stop7h 01m
United Airlines
Sat 6/276:01 am
STL
- YUL
1 stop6h 08m
United Airlines
Deal found 3/29![United Airlines logo]()
$480
This Delta deal was found by Cheapflights users on 4/2. 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.
Wed 6/249:30 am
YUL
- STL
1 stop12h 10m
Delta
Fri 6/263:45 pm
STL
- YUL
1 stop7h 14m
Delta
Deal found 4/2![Delta logo]()
$475
This Delta deal was found by Cheapflights users on 4/2. 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 4/212:29 pm
YUL
- STL
1 stop5h 57m
Delta
Fri 4/245:35 pm
STL
- YUL
1 stop4h 51m
Delta
Deal found 4/2![Delta logo]()
$487
Last-minute flights from Quebec to St. LouisDiscover last-minute flight deals from Quebec to St. Louis. Data last updated April 3, 2026 and is based on user searches.
Discover last-minute flight deals from Quebec to St. Louis. Data last updated April 3, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 3/30. 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.
Mon 4/206:45 pm
YUL
- STL
1 stop5h 51m
Delta
Sat 4/255:59 pm
STL
- YUL
1 stop4h 09m
Delta
Deal found 3/30![Delta logo]()
$454
This United Airlines deal was found by Cheapflights users on 4/1. 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 4/247:30 pm
YOW
- STL
1 stop16h 01m
United Airlines
Wed 4/2911:15 am
STL
- YOW
1 stop4h 52m
United Airlines
Deal found 4/1![United Airlines logo]()
$288
This Delta deal was found by Cheapflights users on 3/29. 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.
Sat 4/257:00 am
YUL
- STL
1 stop5h 56m
Delta
Sat 5/25:00 pm
STL
- YUL
1 stop5h 51m
Delta
Deal found 3/29![Delta logo]()
$471
This American Airlines deal was found by Cheapflights users on 3/29. 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 4/281:03 pm
YUL
- STL
2 stops11h 43m
American Airlines
Sun 5/38:03 pm
STL
- YUL
1 stop14h 41m
American Airlines
Deal found 3/29![American Airlines logo]()
$479
This Booking.com deal was found by Cheapflights users on 3/31. 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 5/16:30 pm
YUL
- STL
Nonstop2h 55m
Air Canada
Sun 5/31:05 pm
STL
- YUL
Nonstop2h 35m
Air Canada
Deal found 3/31![Air Canada logo]()
$468
This Air Canada deal was found by Cheapflights users on 3/29. 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 5/16:30 pm
YUL
- STL
Nonstop2h 55m
Air Canada
Wed 5/61:05 pm
STL
- YUL
Nonstop2h 35m
Air Canada
Deal found 3/29![Air Canada logo]()
$473
This American Airlines deal was found by Cheapflights users on 4/2. 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 5/107:45 am
YUL
- STL
1 stop12h 44m
American Airlines
Sat 5/165:21 pm
STL
- YUL
1 stop17h 23m
American Airlines
Deal found 4/2![American Airlines logo]()
$465
This Air Canada deal was found by Cheapflights users on 3/29. 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 5/147:00 am
YOW
- STL
1 stop6h 06m
Air Canada
Thu 5/217:05 am
STL
- YOW
1 stop5h 00m
Air Canada
Deal found 3/29![Air Canada logo]()
$397
This United Airlines deal was found by Cheapflights users on 3/29. 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 5/145:05 am
YOW
- STL
2 stops17h 08m
United Airlines
Thu 5/217:05 am
STL
- YOW
1 stop5h 00m
United Airlines
Deal found 3/29![United Airlines logo]()
$461
This Air Canada deal was found by Cheapflights users on 4/1. 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 5/162:35 pm
YOW
- STL
1 stop6h 50m
Air Canada
Sat 5/237:05 am
STL
- YOW
1 stop5h 00m
Air Canada
Deal found 4/1![Air Canada logo]()
$282
This United Airlines deal was found by Cheapflights users on 4/1. 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 5/1612:00 pm
YOW
- STL
2 stops10h 13m
United Airlines
Sat 5/237:05 am
STL
- YOW
1 stop5h 00m
United Airlines
Deal found 4/1![United Airlines logo]()
$357
This Trip.com deal was found by Cheapflights users on 3/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/183:00 pm
YOW
- STL
1 stop6h 25m
Air Canada
Sun 5/247:05 am
STL
- YOW
1 stop5h 00m
Air Canada
Deal found 3/30![Air Canada logo]()
$265
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 April 3, 2026.
Search for one-way flight options from Quebec to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 3, 2026.
This Air Canada deal was found by Cheapflights users on 4/1. 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 5/162:35 pm
YOW
- STL
1 stop6h 50m
Air Canada
Deal found 4/1![Air Canada logo]()
$171
This Air Canada deal was found by Cheapflights users on 4/2. 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 5/172:40 pm
YOW
- STL
1 stop6h 45m
Air Canada
Deal found 4/2![Air Canada logo]()
$172
This United Airlines deal was found by Cheapflights users on 4/1. 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 5/1610:25 am
YOW
- STL
2 stops13h 20m
United Airlines
Deal found 4/1![United Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 4/2. 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 5/44:00 pm
YUL
- STL
3 stops41h 55m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 3/31. 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 5/266:45 am
YUL
- STL
2 stops18h 36m
Multiple Airlines
Deal found 3/31![Multiple Airlines logo]()
$216
This Delta deal was found by Cheapflights users on 4/2. 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 5/1712:25 pm
YOW
- STL
2 stops11h 56m
Delta
Deal found 4/2![Delta logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 4/2811:45 am
YUL
- STL
3 stops20h 05m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$225
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 4/298:55 am
YUL
- STL
3 stops26h 31m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 5/137:15 pm
YUL
- STL
2 stops22h 39m
Multiple Airlines
Deal found 3/29![Multiple Airlines logo]()
$232
This Kiwi.com deal was found by Cheapflights users on 4/2. 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 5/184:00 pm
YUL
- STL
3 stops41h 55m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 4/2. 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 5/178:45 pm
YOW
- STL
3 stops22h 51m
Multiple Airlines
Deal found 4/2![Multiple Airlines logo]()
$337
This Kiwi.com deal was found by Cheapflights users on 4/1. 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 5/167:15 pm
YOW
- STL
3 stops38h 40m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$368
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 April 3, 2026.
Round-trip from | $265 (Trip.com) |
|---|---|
One-way from | $171 (Air Canada) |
Popular in | May |
Cheapest in | July |
Average price | $502 |
Good round-trip deal | $499 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 2,558,603 searches. Data last updated April 3, 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 - STL
YOWSTL
Ottawa
Fri 4/24
7:30 pm-10:31 am
1 stop16h 01m
Lambert-St Louis
Wed 4/29
11:15 am-5:07 pm
1 stop4h 52m
$288
OttawaSt. Louis
YOW - STL
YOWSTL
Ottawa
Wed 6/3
10:44 am-9:16 pm
1 stop11h 32m
Lambert-St Louis
Sat 6/6
9:23 am-9:35 pm
1 stop11h 12m
$288
OttawaSt. Louis
YOW - STL
YOWSTL
Ottawa
Tue 6/2
5:20 pm-9:16 pm
1 stop4h 56m
Lambert-St Louis
Fri 6/5
1:13 pm-9:35 pm
1 stop7h 22m
$289
OttawaSt. Louis
YOW - STL
YOWSTL
Ottawa
Wed 6/3
9:55 am-3:46 pm
2 stops6h 51m
Lambert-St Louis
Sat 6/6
1:13 pm-9:35 pm
1 stop7h 22m
$341
Quickest round-trip
MontrealSt. Louis
YUL - STL
YULSTL
Montreal Pierre Elliott Trudeau Intl
Mon 4/20
6:45 pm-11:36 pm
1 stop5h 51m
Lambert-St Louis
Sat 4/25
5:59 pm-11:08 pm
1 stop4h 09m
$454
MontrealSt. Louis
YUL - STL
YULSTL
Montreal Pierre Elliott Trudeau Intl
Sun 5/10
7:45 am-12:48 pm
1 stop6h 03m
Lambert-St Louis
Sat 5/16
8:03 pm-11:44 am
1 stop14h 41m
$465
MontrealSt. Louis
YUL - STL
YULSTL
Montreal Pierre Elliott Trudeau Intl
Mon 4/20
6:45 pm-11:36 pm
1 stop5h 51m
Lambert-St Louis
Tue 4/28
9:59 am-5:40 pm
1 stop6h 41m
$471
MontrealSt. Louis
YUL - STL
YULSTL
Montreal Pierre Elliott Trudeau Intl
Wed 4/29
6:00 am-1:05 pm
1 stop8h 05m
Lambert-St Louis
Mon 5/4
5:35 pm-11:26 pm
1 stop4h 51m
$471
MontrealSt. Louis
YUL - STL
YULSTL
Montreal Pierre Elliott Trudeau Intl
Thu 8/27
6:00 am-9:30 am
1 stop4h 30m
Lambert-St Louis
Mon 8/31
2:18 pm-11:10 pm
1 stop7h 52m
$473
MontrealSt. Louis
YUL - STL
YULSTL
Montreal Pierre Elliott Trudeau Intl
Wed 6/24
9:30 am-8:40 pm
1 stop12h 10m
Lambert-St Louis
Fri 6/26
3:45 pm-11:59 pm
1 stop7h 14m
$475
Showing 1-10 of 30 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.
YOW-STL
YUL-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
YOW-STL
YUL-STL
What is the cheapest month to book a flight from Quebec to St. Louis?
Currently, September is the cheapest month in which you can book a flight from Quebec to St. Louis (average of $336). 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.
How much does it cost to fly round-trip from Quebec to St. Louis?
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 locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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Alternative routes for Quebec to St. Louis
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Complete your trip
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Quebec and St. Louis flights
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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 April 3, 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 2,558,603 searches. Data last updated April 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$499 | Average$589 | FlexibilityNo cancel fee | On-time67% |