STL - YYZ

C$ 133 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 2/11. 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

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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Booking Insights
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

Thu, 30 Oct - Thu, 6 Nov
Logo
10:57 a.m. - 2:40 p.m.STL-YYZ
26h 43m1 stop
Logo
9:45 a.m. - 1:57 p.m.YYZ-STL
29h 12m1 stop
C$ 345
Find Deal
Thu, 30 Oct - Thu, 6 Nov
Logo
10:57 a.m. - 2:40 p.m.STL-YYZ
26h 43m1 stop
Logo
9:45 a.m. - 9:07 a.m.YYZ-STL
24h 22m2 stops
C$ 386
Find Deal
Thu, 4 Dec - Sun, 7 Dec
Logo
12:20 p.m. - 11:43 a.m.STL-YYZ
22h 23m1 stop
Logo
8:00 p.m. - 8:45 a.m.YYZ-STL
13h 45m1 stop
C$ 450
Find Deal
Sat, 1 Nov - Sun, 2 Nov
Logo
4:51 p.m. - 7:10 a.m.STL-YYZ
13h 19m1 stop
Logo
8:00 p.m. - 9:40 a.m.YYZ-STL
14h 40m1 stop
C$ 454
Find Deal
Sat, 1 Nov - Sun, 2 Nov
Air Canada Logo
4:05 p.m. - 7:06 p.m.STL-YYZ
2h 01mdirect
Air Canada Logo
2:00 p.m. - 3:29 p.m.YYZ-STL
2h 29mdirect
C$ 577Air Canada
Find Deal
Fri, 7 Nov - Tue, 11 Nov
American Airlines Logo
11:33 a.m. - 9:44 p.m.STL-YYZ
9h 11m1 stop
American Airlines Logo
10:57 a.m. - 9:19 p.m.YYZ-STL
11h 22m1 stop
C$ 591American Airlines
Find Deal
Wed, 22 Oct - Mon, 27 Oct
American Airlines Logo
6:00 a.m. - 2:30 p.m.STL-YYZ
7h 30m1 stop
American Airlines Logo
1:15 p.m. - 11:54 p.m.YYZ-STL
11h 39m1 stop
C$ 594American Airlines
Find Deal
Sat, 1 Nov - Mon, 3 Nov
Delta Logo
1:35 p.m. - 10:29 a.m.STL-YYZ
19h 54m1 stop
Delta Logo
6:15 p.m. - 4:43 p.m.YYZ-STL
23h 28m1 stop
C$ 634Delta
Find Deal
Sat, 1 Nov - Sun, 2 Nov
Air Canada Logo
4:05 p.m. - 7:06 p.m.STL-YYZ
2h 01mdirect
Air Canada Logo
12:05 p.m. - 3:46 p.m.YYZ-STL
4h 41m1 stop
C$ 663Air Canada
Find Deal
Tue, 28 Oct - Tue, 4 Nov
Alaska Airlines Logo
7:00 a.m. - 3:35 p.m.STL-YYZ
31h 35m1 stop
Alaska Airlines Logo
4:45 p.m. - 3:18 p.m.YYZ-STL
23h 33m1 stop
C$ 667Alaska Airlines
Find Deal

Everything you should know

Our travellers' advice
AI-generated summary based on content written by travel experts
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
Air Canada
Cheapest • from C$ 577 (round-trip)
Air Canada
Best reviews • 7.1 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
6 weeks
in advance
Our data shows that travellers who book at least 6 weeks in advance save around 59% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
January
Cheapest • 39% price drop
September
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
C$ 345
Typical prices: C$ 502-1039
Multiple Airlines
Thu 30/10Thu 6/11
STL - YYZ • 1 stop
Cheapest direct flights
C$ 567
Typical prices: C$ 357-788
Air Canada
Thu 30/10Thu 6/11
STL - YYZ • Direct
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Toronto!
Expert advice

Expert advice for your flight from St. Louis to Toronto

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
United Airlines

United's Economy Plus offers up to 15 cm more legroom than standard economy seats.


Consider Priority Boarding to ensure overhead bin space, placing you in Zone 2.

Read more about United Airlinesby Stefanie Waldek
Air Canada

Air Canada's Preferred Economy seats offer up to 10 cm extra legroom for a fee.


Air Canada offers live TV on some North American flights, enhancing in-flight entertainment.

Read more about Air Canadaby Stefanie Waldek
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and Air Canada

Stefanie Waldek

Stefanie Waldek

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.

Read more
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?

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 Thursday and more expensive on a Sunday. 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 January, where tickets cost C$ 394 (return) on average. On the other hand, the most expensive months are November and April, where the average cost of round-trip tickets is C$ 865 and C$ 765 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at C$ 863 on average.

How far in advance should I book a flight from St. Louis to Toronto Pearson Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from St. Louis to Toronto Pearson Intl Airport, you should book around 6 weeks before departure, which saves you about 59% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Find deals

Good to know

Low seasonFebruary
Cheapest flightC$ 133
Best time to beat the crowds but there is an average 8% 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$ 96 for a one-way ticket and C$ 249 for a round-trip.

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

    Air Canada, 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 Canadair (Bombardier) Regional Jet 900 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.

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$ 579 or less one-way and C$ 840 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 10000 reviews
7.8Crew
7.3Boarding
6.8Entertainment
6.3Food
7.1Comfort
Airline reviews

Short flight. Everything was fine except the flight was delayed twice for a total of an hour.

8.0 ExcellentJason, Sep 2025ORD - YYZ
Read more Air Canada reviews

Short flight. Everything was fine except the flight was delayed twice for a total of an hour.

I found the boarding easy and my seat was very comfortable as I had a lot of leg room. I am not too happy that I no longer have lounge access even though I used to get it with my TD credit card.

Flight cancelled. Major disruption to our travel. Do not use Air Canada from KC. To few flights.

There labor disputes cancelled my flight less than 24 hours before my boarding time but there customer service/website was easy enough to navigate and they rebooked me for no upcharge.

Re luggage I carried a backpack only. I did not check any bags in. However there were other passengers with carry on luggage going in the plane. My question is why are others allowed to have a carry on luggage inside the plane? Shouldn’t they have dropped it off at the gate? I’m asking because I could have brought the same thing instead of a backpack only. Please clarify for future reference. Thank you.

Like the service. Very hard to communicate or contact when have problems

Check in staff was incredibly rude and condescending. When I arrived at the gate I had been charged $125 for a checked back. I did have or check a bag. When I brought this to the attention of the staff member who checked me in, she said that she made a mistake and there was nothing she could do about it. I asked her to remove the charge and refund credit card, she said she could not and that I had to call my credit card company to contest the charge. I called Air Canada customer support, was put on hold, after 43 minutes a received a messages stating customer service was overwhelmed with calls and was then hung up on.

Refreshments and Air Hostess was good. Issues with customs in Toronto caused flight to depart and left me behind twice. Vouchers for delayed flight needs to increase.

Long wait to check in at the priority counter in Toronto

I had no communication, receipt etc from Air Canada until hours before flight

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

Information on your arrival and departure airports

St. Louis (STL)
Pearson Intl (YYZ)

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