STL - YYZ

C$ 220 Find Cheap Flights from St. Louis to Toronto

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Toronto departing on 27/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Toronto Pearson Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Toronto, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Toronto, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
C$ 524
Typical prices: C$ 726-C$ 1,032
Multiple Airlines
Mon 13/4Sun 19/4
STL - YYZ • 1 stop
Cheapest direct flights
C$ 698
Typical prices: C$ 371-C$ 1,695
Air Canada
Sun 26/4Sun 3/5
STL - YYZ • Direct
Advice from real travellers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Air Canada's Preferred Economy adds 10 cm legroom.
United's Economy Plus offers 15 cm more legroom.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from C$ 638 (round-trip)
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Direct flights
You can fly direct with Air Canada. Average duration is 2h 01m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to travel
Cheapest • 43% price drop
Most popular
Good to know
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Good to know
+1
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Flight Deals
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Expert advice
Flight Deals

Cheap Flights from St. Louis to Toronto (STL-YYZ)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Toronto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Toronto

Mon, 13 Apr - Sun, 19 Apr
Multiple Airlines Logo
8:41 a.m. - 12:14 a.m.
STL
-
YYZ
14h 33m
1 stop
Multiple Airlines Logo
6:30 a.m. - 6:50 a.m.
YYZ
-
STL
25h 20m
2 stops
C$ 524Multiple Airlines
Mon, 13 Apr - Mon, 20 Apr
Multiple Airlines Logo
4:59 p.m. - 2:16 p.m.
STL
-
YYZ
20h 17m
1 stop
Multiple Airlines Logo
9:35 a.m. - 6:50 a.m.
YYZ
-
STL
46h 15m
2 stops
C$ 531Multiple Airlines
Thu, 2 Apr - Tue, 7 Apr
Multiple Airlines Logo
6:29 p.m. - 2:20 p.m.
STL
-
YYZ
18h 51m
2 stops
Multiple Airlines Logo
7:10 a.m. - 11:25 p.m.
YYZ
-
STL
17h 15m
1 stop
C$ 550Multiple Airlines
Wed, 8 Apr - Thu, 9 Apr
Multiple Airlines Logo
4:59 p.m. - 2:20 p.m.
STL
-
YYZ
20h 21m
1 stop
Multiple Airlines Logo
8:20 p.m. - 7:51 a.m.
YYZ
-
STL
12h 31m
1 stop
C$ 561Multiple Airlines
Sat, 18 Apr - Wed, 22 Apr
Multiple Airlines Logo
4:16 p.m. - 6:20 a.m.
STL
-
YYZ
13h 04m
1 stop
Multiple Airlines Logo
6:30 a.m. - 10:30 a.m.
YYZ
-
STL
29h 00m
2 stops
C$ 571Multiple Airlines
Mon, 13 Apr - Sun, 19 Apr
Multiple Airlines Logo
8:41 a.m. - 12:14 a.m.
STL
-
YYZ
14h 33m
1 stop
Multiple Airlines Logo
8:00 p.m. - 11:19 p.m.
YYZ
-
STL
28h 19m
1 stop
C$ 574Multiple Airlines
Fri, 3 Apr - Tue, 7 Apr
Multiple Airlines Logo
9:50 a.m. - 9:09 p.m.
STL
-
YYZ
10h 19m
2 stops
Multiple Airlines Logo
7:10 a.m. - 11:25 p.m.
YYZ
-
STL
17h 15m
1 stop
C$ 579Multiple Airlines
Mon, 13 Apr - Mon, 20 Apr
Multiple Airlines Logo
4:59 p.m. - 2:16 p.m.
STL
-
YYZ
20h 17m
1 stop
Multiple Airlines Logo
7:10 a.m. - 11:19 p.m.
YYZ
-
STL
17h 09m
1 stop
C$ 593Multiple Airlines
Wed, 1 Apr - Mon, 6 Apr
Multiple Airlines Logo
4:54 p.m. - 2:20 p.m.
STL
-
YYZ
20h 26m
1 stop
Multiple Airlines Logo
3:40 p.m. - 10:30 a.m.
YYZ
-
STL
19h 50m
2 stops
C$ 596Multiple Airlines
Fri, 3 Apr - Tue, 7 Apr
Multiple Airlines Logo
9:50 a.m. - 9:09 p.m.
STL
-
YYZ
10h 19m
2 stops
Multiple Airlines Logo
7:10 a.m. - 11:25 p.m.
YYZ
-
STL
17h 15m
1 stop
C$ 604Multiple Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Toronto flights

Get data-powered insights and trends into flights from St. Louis to Toronto to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Toronto Pearson Intl Airport?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Toronto Pearson Intl Airport departing in April.

What’s the cheapest day of the week to fly from St. Louis to Toronto?

The average price of all round-trip flights from St. Louis to Toronto Pearson Intl Airport clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Toronto on a Sunday and more expensive on a Wednesday. On your return trip to St. Louis, you should consider flying back on a Thursday, and avoid Mondays for better deals.

What is the cheapest month to fly from St. Louis to Toronto Pearson Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Toronto Pearson Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Toronto Pearson Intl Airport is March, where tickets cost C$ 424 (return) on average. On the other hand, the most expensive months are January and April, where the average cost of round-trip tickets is C$ 1,254 and C$ 932 respectively.

Can I save money by flying with a layover from St. Louis to Toronto Pearson Intl Airport?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of C$ 324, prices are generally cheapest when you fly direct.

Expert advice

Expert advice for your flight from St. Louis to Toronto

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and Air Canada

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Good to know

Low seasonJanuary
Cheapest flightC$ 220
Best time to beat the crowds but there is an average 69% increase in price.
Most popular time to fly (4% more expensive on average)
Flight from St. Louis to Toronto

When to book flights from St. Louis to Toronto

Are your dates flexible? Find out the best times to travel from St. Louis to Toronto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Toronto flights

  • What is the cheapest flight from St. Louis to Toronto Pearson Intl Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Toronto Pearson Intl Airport was C$ 220 for a one-way ticket and C$ 524 for a round-trip.

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Toronto?

    Air Canada, Spirit Airlines, United Airlines, and Lufthansa offer inflight Wi-Fi service on the St. Louis to Toronto flight route.

  • Which aircraft models fly most regularly from St. Louis to Toronto?

    The Embraer 175 is the aircraft model that flies most regularly on the St. Louis to Toronto flight route.

  • Which airline alliances offer flights from St. Louis to Toronto?

    Star Alliance is the only airline alliance operating flights between St. Louis and Toronto.

  • On which days can I fly direct from St. Louis to Toronto?

    There are direct flights from St. Louis to Toronto on a daily basis.

  • How does KAYAK find such low prices on flights from St. Louis to Toronto?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Toronto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Toronto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Toronto from St. Louis is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Toronto?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Toronto with an airline and back to St. Louis with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Toronto?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Toronto from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which airlines provide the cheapest flights from St. Louis to Toronto?

    In the past 3 days, the cheapest round-trip tickets from St. Louis to Toronto were found on American Airlines (C$ 638) and Air Canada (C$ 704).

KAYAK’s top tips for finding a cheap flight from St. Louis to Toronto Pearson Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 324 or less round-trip.

Prefer to fly direct from St. Louis to Toronto?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Lambert-St Louis to Toronto Pearson Intl.
Find which airlines fly direct from Lambert-St Louis Airport to Toronto Pearson Intl Airport, which days they fly and book direct flights.

Direct departures

Lambert-St Louis to Toronto Pearson Intl

Monday

Air Canada

Air Canada

Tuesday

Air Canada

Air Canada

Wednesday

Air Canada

Air Canada

Thursday

Air Canada

Air Canada

Friday

Air Canada

Air Canada

Saturday

Air Canada

Air Canada

Sunday

Air Canada

Air Canada

See more nonstop flights

Direct returns

Toronto Pearson Intl to Lambert-St Louis

Monday

Air Canada

Air Canada

Tuesday

Air Canada

Air Canada

Wednesday

Air Canada

Air Canada

Thursday

Air Canada

Air Canada

Friday

Air Canada

Air Canada

Saturday

Air Canada

Air Canada

Sunday

Air Canada

Air Canada

See more nonstop flights

Reviews of the top airline flying from St. Louis to Toronto

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Toronto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Toronto? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.1
Air CanadaOverall score based on 10811 reviews
7.8Crew
6.3Food
7.3Boarding
7.1Comfort
6.8Entertainment
Airline reviews

I want to thank Carlos at the Miami AC desk - he was amazing and went over and above to help us out. Thank you Carlos and all the best to you!!! You made our faith in AC feel great! Sincerely, David Cubitt

10.0 ExcellentAnonymous, Mar 2026
MIA - YYZ
Read more Air Canada reviews

I want to thank Carlos at the Miami AC desk - he was amazing and went over and above to help us out. Thank you Carlos and all the best to you!!! You made our faith in AC feel great! Sincerely, David Cubitt

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Everything you need to know for your flight from St. Louis to Toronto

Information on your arrival and departure airports