$134+ Cheap flights from St. Louis (STL) to Pearson Intl (YYZ)
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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYZ
Oct 24 — Oct 311
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Pearson Intl 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 St. Louis to Pearson Intl
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Best
Last-minute
One-way
Cheapest flights from St. Louis to Pearson IntlExplore the most affordable flight options available from St. Louis to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 24, 2026.
Explore the most affordable flight options available from St. Louis to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 24, 2026.
This American Airlines deal was found by Cheapflights users on 9/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:29 am -
1 stop9h 15m
Tue 10/277:29 am -
1 stop10h 24m
Deal found 9/22![American Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:44 pm -
2 stops19h 36m
Sat 10/316:30 am -
1 stop17h 46m
Deal found 9/21![Multiple Airlines logo]()
$359
This Mytrip deal was found by Cheapflights users on 9/23. 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.
Wed 10/286:44 pm -
2 stops19h 36m
Sun 11/14:20 pm -
2 stops26h 20m
Deal found 9/23![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 9/24. 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 11/265:59 pm -
1 stop18h 41m
Wed 12/910:40 am -
2 stops49h 37m
Deal found 9/24![Multiple Airlines logo]()
$362
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:44 pm -
2 stops19h 36m
Mon 11/26:30 am -
1 stop17h 46m
Deal found 9/21![Multiple Airlines logo]()
$366
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Wed 12/26:13 pm -
1 stop18h 27m
Wed 12/910:40 am -
2 stops49h 37m
Deal found 9/23![Multiple Airlines logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:30 pm -
1 stop20h 10m
Sun 11/17:35 am -
2 stops35h 05m
Deal found 9/21![Multiple Airlines logo]()
$375
This American Airlines deal was found by Cheapflights users on 9/19. 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 10/307:29 am -
1 stop9h 15m
Mon 11/211:36 am -
1 stop8h 46m
Deal found 9/19![American Airlines logo]()
$381
This Mytrip deal was found by Cheapflights users on 9/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:44 pm -
2 stops19h 36m
Wed 11/47:15 am -
2 stops11h 25m
Deal found 9/24![Multiple Airlines logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Wed 10/216:35 pm -
2 stops25h 20m
Sat 10/316:30 am -
1 stop17h 46m
Deal found 9/23![Multiple Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:30 pm -
1 stop20h 10m
Tue 10/276:20 pm -
2 stops24h 20m
Deal found 9/21![Multiple Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:30 pm -
1 stop20h 10m
Thu 10/297:35 am -
2 stops35h 05m
Deal found 9/21![Multiple Airlines logo]()
$387
Best flights from St. Louis to Pearson IntlDiscover carefully curated flight deals from St. Louis to Pearson Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
Discover carefully curated flight deals from St. Louis to Pearson Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 24, 2026.
This United Airlines deal was found by Cheapflights users on 9/20. 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 10/198:00 am -
1 stop8h 01m
Tue 10/201:00 pm -
1 stop9h 21m
Deal found 9/20![United Airlines logo]()
$530
This Delta deal was found by Cheapflights users on 9/20. 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.
Wed 2/106:30 am -
1 stop8h 27m
Wed 2/1712:15 pm -
2 stops12h 03m
Deal found 9/20![Delta logo]()
$549
This American Airlines deal was found by Cheapflights users on 9/19. 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 12/1211:23 am -
1 stop11h 23m
Sun 1/101:17 pm -
1 stop11h 42m
Deal found 9/19![American Airlines logo]()
$571
This United deal was found by Cheapflights users on 9/22. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/3111:15 am -
1 stop9h 00m
Sun 11/12:10 pm -
Nonstop2h 13m
Deal found 9/22![Multiple Airlines logo]()
$718
This Delta deal was found by Cheapflights users on 9/20. 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.
Tue 2/96:30 am -
2 stops11h 37m
Tue 2/1612:15 pm -
2 stops12h 03m
Deal found 9/20![Delta logo]()
$554
This Delta deal was found by Cheapflights users on 9/19. 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 12/1211:44 am -
2 stops10h 23m
Sun 1/106:30 am -
1 stop9h 01m
Deal found 9/19![Delta logo]()
$696
This United deal was found by Cheapflights users on 9/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/11:08 pm -
1 stop4h 37m
Thu 11/52:10 pm -
Nonstop2h 16m
Deal found 9/20![Multiple Airlines logo]()
$792
This United Airlines deal was found by Cheapflights users on 9/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:01 pm -
1 stop3h 58m
Tue 10/272:57 pm -
1 stop7h 55m
Deal found 9/22![United Airlines logo]()
$808
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/58:30 am -
1 stop7h 55m
Wed 10/72:45 pm -
1 stop5h 16m
Deal found 9/19![United Airlines logo]()
$842
This United deal was found by Cheapflights users on 9/20. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/910:50 am -
1 stop7h 20m
Tue 2/162:10 pm -
Nonstop2h 16m
Deal found 9/20![Multiple Airlines logo]()
$854
Last-minute flights from St. Louis to Pearson IntlDiscover last-minute flight deals from St. Louis to Pearson Intl. Data last updated September 24, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Pearson Intl. Data last updated September 24, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Wed 10/216:35 pm -
2 stops25h 20m
Sat 10/316:30 am -
1 stop17h 46m
Deal found 9/23![Multiple Airlines logo]()
$385
This American Airlines deal was found by Cheapflights users on 9/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:29 am -
1 stop9h 15m
Tue 10/277:29 am -
1 stop10h 24m
Deal found 9/22![American Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:35 pm -
2 stops25h 44m
Sat 10/316:30 am -
1 stop17h 46m
Deal found 9/21![Multiple Airlines logo]()
$406
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:30 pm -
1 stop20h 10m
Sun 11/17:35 am -
2 stops35h 05m
Deal found 9/21![Multiple Airlines logo]()
$375
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:30 pm -
1 stop20h 10m
Tue 10/276:20 pm -
2 stops24h 20m
Deal found 9/21![Multiple Airlines logo]()
$386
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:30 pm -
1 stop20h 10m
Thu 10/297:35 am -
2 stops35h 05m
Deal found 9/21![Multiple Airlines logo]()
$387
This Kiwi.com deal was found by Cheapflights users on 9/23. 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.
Sat 10/247:42 pm -
2 stops43h 33m
Sat 10/316:30 am -
1 stop17h 46m
Deal found 9/23![Multiple Airlines logo]()
$410
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:44 pm -
2 stops19h 36m
Sat 10/316:30 am -
1 stop17h 46m
Deal found 9/21![Multiple Airlines logo]()
$359
This Mytrip deal was found by Cheapflights users on 9/23. 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.
Wed 10/286:44 pm -
2 stops19h 36m
Sun 11/14:20 pm -
2 stops26h 20m
Deal found 9/23![Multiple Airlines logo]()
$361
This Kiwi.com deal was found by Cheapflights users on 9/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:44 pm -
2 stops19h 36m
Mon 11/26:30 am -
1 stop17h 46m
Deal found 9/21![Multiple Airlines logo]()
$366
This Mytrip deal was found by Cheapflights users on 9/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/286:44 pm -
2 stops19h 36m
Wed 11/47:15 am -
2 stops11h 25m
Deal found 9/24![Multiple Airlines logo]()
$382
This American Airlines deal was found by Cheapflights users on 9/19. 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 10/307:29 am -
1 stop9h 15m
Mon 11/211:36 am -
1 stop8h 46m
Deal found 9/19![American Airlines logo]()
$381
One-way flights from St. Louis to Pearson IntlSearch for one-way flight options from St. Louis to Pearson Intl. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
Search for one-way flight options from St. Louis to Pearson Intl. Find affordable one-way fares based on user searches. Data last updated September 24, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/22. 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.
Fri 10/166:35 pm -
2 stops25h 59m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 9/24. 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.
Wed 10/146:35 pm -
2 stops43h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![Multiple Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 9/22. 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.
Mon 11/26:44 pm -
2 stops21h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$147
This American Airlines deal was found by Cheapflights users on 9/21. 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 10/155:00 am -
1 stop8h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/21![American Airlines logo]()
$148
This American Airlines deal was found by Cheapflights users on 9/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:00 am -
1 stop7h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![American Airlines logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 9/22. 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.
Fri 11/66:44 pm -
2 stops27h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![Multiple Airlines logo]()
$167
This American Airlines deal was found by Cheapflights users on 9/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:00 am -
1 stop8h 33m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![American Airlines logo]()
$175
This American Airlines deal was found by Cheapflights users on 9/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:00 am -
1 stop7h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/22![American Airlines logo]()
$177
Find flight deals from St. Louis to Pearson Intl
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Pearson Intl (YYZ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $354 (American Airlines) |
One-way from | $134 (Kiwi.com) |
Popular in | January |
Cheapest in | December |
Average price | $712 |
Good round-trip deal | $563 or less |
Good one-way deal | $402 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Pearson Intl 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 24, 2026.
Use the filters below to find and compare flights from St. Louis to Toronto Pearson Intl Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Wed 10/14
6:35 pm-2:55 pm
2 stops43h 20m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$139
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Fri 10/23
5:00 am-2:33 pm
1 stop8h 33m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$175
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Fri 10/23
6:35 pm-9:19 pm
3 stops25h 44m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$202
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Thu 11/5
12:14 pm-1:40 pm
2 stops24h 26m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$211
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Mon 10/12
6:35 pm-12:00 pm
2 stops40h 25m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$257
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Fri 12/25
6:30 am-11:13 pm
1 stop15h 43m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$268
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Fri 10/2
2:29 pm-7:30 pm
2 stops28h 01m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$329
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Tue 12/29
7:18 am-8:28 pm
2 stops12h 10m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$351
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Sat 10/10
4:30 pm-1:45 pm
1 stop20h 15m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$359
Quickest round-trip
St. LouisToronto
STL Lambert-St Louis - YYZ Toronto Pearson Intl
STLYYZ
Lambert-St Louis
Mon 10/12
8:55 am-11:49 am
Nonstop1h 54m
Toronto Pearson Intl
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$365
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Pearson Intl
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Pearson Intl in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on St. Louis-Toronto Pearson Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Toronto Pearson Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Toronto Pearson Intl Airport flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Toronto Pearson Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Toronto Pearson Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from St. Louis to Pearson Intl
Have a flexible travel schedule? Discover the best time to fly to Pearson Intl from St. Louis with our price prediction graph.
STL-YYZ
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 St. Louis to Toronto Pearson Intl Airport
Prices
Airlines
What is the cheapest month to book a flight from St. Louis to Toronto Pearson Intl Airport?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Toronto Pearson Intl Airport (average of $466). Flying from St. Louis to Toronto Pearson Intl Airport in January is currently the most expensive (average of $916). 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 STL to YYZ?
Find hourly flight availability from St. Louis to Pearson Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 24, 2026.
When flying from St. Louis to Toronto Pearson Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
The best insider tips for St. Louis to Toronto Pearson Intl Airport flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Toronto Pearson Intl Airport trip
Our travel experts
Reviews of airlines servicing Pearson Intl
Get insights into the airlines that provide service to Pearson Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pearson Intl. Reviews last updated September 24, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAir Canada from St. Louis to Toronto Pearson Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Food
7.2
Crew
8.5
Reviews
1 / 20
4.0
OkayJennifer,Sep 2026
ORD - LGA
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Pearson Intl. 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 Toronto Pearson Intl Airport?
Book flights to Toronto Pearson Intl Airport if you plan to visit one of these locationsMarkham
Brampton
Vaughan
Collingwood
Kitchener
Burlington
Pickering
Oakville
Owen Sound
Whitby
Cambridge
Ajax
Orillia
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St. Louis and Pearson Intl flights
Browse other St. Louis and Pearson Intl flight options. Last updated on September 24, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on September 24, 2026.
Other flights to Pearson Intl
Explore flights to Pearson Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 24, 2026.
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Top 4 airlines flying from St. Louis to Pearson Intl
Discover the top 4 airlines that operate flights from St. Louis to Pearson Intl. 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 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$246 | Average$623 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$253 | Average$632 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$270 | Average$544 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$272 | Average$604 | FlexibilityNo cancel fee | On-time67% |