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YYZ - STL

$160 Find Cheap Flights from Toronto to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Toronto to St. Louis departing on 4/3. 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.
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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Toronto to St. Louis, 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 Toronto to St. Louis, as well as popular online travel agencies
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Cheap Flight Deals from Toronto to St. Louis (YYZ-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Toronto to St. Louis 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.

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

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Toronto to St. Louis.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:05 am - 5:52 pmYYZ-STL
11h 47m1 stop
6:11 pm - 11:55 pmSTL-YYZ
28h 44m1 stop
$232
Find Deal
Tue, Apr 8 - Tue, Apr 15
7:05 am - 5:52 pmYYZ-STL
11h 47m1 stop
6:11 pm - 9:26 pmSTL-YYZ
26h 15m2 stops
$263
Find Deal
Tue, Apr 8 - Tue, Apr 15
1:50 pm - 3:06 pmYYZ-STL
2h 16mnonstop
3:40 pm - 11:58 pmSTL-YYZ
7h 18m1 stop
$369Air Canada
Find Deal
Tue, Mar 25 - Tue, Apr 1
6:00 am - 9:36 amYYZ-STL
4h 36m1 stop
3:30 pm - 10:59 pmSTL-YYZ
6h 29m1 stop
$374Delta
Find Deal
Tue, Mar 25 - Tue, Apr 1
6:14 am - 11:56 amYYZ-STL
6h 42m1 stop
6:08 am - 4:10 pmSTL-YYZ
9h 02m1 stop
$379Delta
Find Deal
Fri, Apr 11 - Fri, Apr 18
1:40 pm - 2:49 pmYYZ-STL
2h 09mnonstop
3:30 pm - 6:30 pmSTL-YYZ
2h 00mnonstop
$388Air Canada
Find Deal
Fri, Apr 11 - Fri, Apr 18
1:50 pm - 3:06 pmYYZ-STL
2h 16mnonstop
9:39 am - 3:46 pmSTL-YYZ
5h 07m1 stop
$421United Airlines
Find Deal
Fri, Mar 28 - Mon, Mar 31
12:20 pm - 3:47 pmYYZ-STL
4h 27m1 stop
3:30 pm - 6:30 pmSTL-YYZ
2h 00mnonstop
$424United Airlines
Find Deal
Thu, Apr 17 - Mon, Apr 21
6:00 am - 9:28 amYYZ-STL
4h 28m1 stop
4:05 pm - 10:24 amSTL-YYZ
17h 19m1 stop
$460WestJet
Find Deal
Mon, Apr 21 - Mon, Apr 21
8:00 pm - 9:36 amYYZ-STL
14h 36m2 stops
6:00 am - 12:12 pmSTL-YYZ
5h 12m1 stop
$473WestJet
Find Deal
Mon, Apr 21 - Thu, Apr 24

Expert advice for your flight from Toronto to St. Louis

Our travel pros reveal their best tips for your Toronto to St. Louis journey.
Airlines
United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy seats.


Purchase Priority Boarding to ensure overhead bin space and avoid gate-checking your carry-on.

Read more about United Airlinesby Stefanie Waldek
Air Canada

Air Canada's Business Class offers spacious recliners with plenty of legroom in a 2-2 configuration.


Preferred Economy seats offer up to four extra inches of legroom for an additional fee.

Read more about Air Canadaby Stefanie Waldek
Airports
YYZ

Toronto Pearson offers YYZ Express to pre-book security screening time slots, saving time during busy periods. Book online up to 72 hours before your flight.

Read more about YYZby Stefanie Waldek
STL

Use MetroLink for convenient access from STL to downtown St. Louis, avoiding rush hour traffic. The Red Line connects the airport to key city areas.

Read more about STLby Yulia Denisyuk
Our travel experts
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, Air Canada and YYZ

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
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia Denisyuk

Yulia Denisyuk

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more

Snippets provided in this section are AI-generated based on a summarization 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.

Flights from Toronto to St. Louis - Travel Insights & Trends

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

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

The average price of all round-trip flights from Toronto Pearson Intl Airport to St. Louis clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to St. Louis on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Toronto to St. Louis. For your return ticket, we recommend flying on a Monday and avoiding Sundays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Toronto Pearson Intl Airport to St. Louis, 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 Toronto Pearson Intl Airport to St. Louis is May, where tickets cost $439 (return) on average. On the other hand, the most expensive months are February and September, where the average cost of round-trip tickets is $595 and $577 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Toronto Pearson Intl Airport to St. Louis, 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 Toronto Pearson Intl Airport to St. Louis, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.

Good to know

Low season

September

High season

December

Cheapest flight

$160
Best time to beat the crowds but there is an average 14% increase in price.
Most popular time to fly with an average 10% increase in price.
Flight from Toronto to St. Louis

When to book flights from Toronto to St. Louis

Are your dates flexible? Find out the best times to travel from Toronto to St. Louis 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 Toronto to St. Louis flights

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

    In the last 3 days, the lowest price for a flight from Toronto Pearson Intl Airport to St. Louis was $160 for a one-way ticket and $232 for a round-trip.

  • Do I need a passport to fly between Toronto and St. Louis?

    A passport is required to fly from Toronto to St. Louis.

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

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

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

    The Canadair (Bombardier) Regional Jet 900 is the aircraft model that flies most regularly on the Toronto to St. Louis flight route.

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

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

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

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

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

    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 Toronto to St. Louis.

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

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

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

    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 St. Louis with an airline and back to Toronto with another airline. Booking your flights between Toronto and STL can sometimes prove cheaper using this method.

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

    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 St. Louis from Toronto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $268 or less one-way and $226 or less round-trip.

Prefer to fly direct from Toronto to St. Louis?

Find which airlines fly direct from Toronto Pearson Intl Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

Toronto Pearson Intl to Lambert-St Louis

Monday

Air Canada, United Airlines

Air Canada, United Airlines

Tuesday

Air Canada, United Airlines

Air Canada, United Airlines

Wednesday

Air Canada, United Airlines

Air Canada, United Airlines

Thursday

Air Canada, United Airlines

Air Canada, United Airlines

Friday

Air Canada, United Airlines

Air Canada, United Airlines

Saturday

Air Canada, United Airlines

Air Canada, United Airlines

Sunday

Air Canada, United Airlines

Air Canada, United Airlines

See more direct flights

Direct returns

Lambert-St Louis to Toronto Pearson Intl

Monday

Air Canada, United Airlines

Air Canada, United Airlines

Tuesday

Air Canada, United Airlines

Air Canada, United Airlines

Wednesday

Air Canada, United Airlines

Air Canada, United Airlines

Thursday

Air Canada, United Airlines

Air Canada, United Airlines

Friday

Air Canada, United Airlines

Air Canada, United Airlines

Saturday

Air Canada, United Airlines

Air Canada, United Airlines

Sunday

Air Canada, United Airlines

Air Canada, United Airlines

See more direct flights
See more direct flights

Top airline flying from Toronto to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Toronto to St. Louis. 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 Toronto to St. Louis? 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.
7.0
Air CanadaOverall score based on 8803 reviews
6.8Entertainment
7.3Boarding
6.2Food
7.0Comfort
7.8Crew
Airline reviews

If you want your flight to get delayed constantly for 13+ hours and given a 10 dollar food voucher the. I would say take air canada. Worst experience ever.

2.0 MediocreAnonymous, Feb 2025YYZ - PHL
Read more Air Canada reviews

If you want your flight to get delayed constantly for 13+ hours and given a 10 dollar food voucher the. I would say take air canada. Worst experience ever.

My flight was cancelled and I was left to figure out where to find a hotel, something to eat and how to get a new flight at 11:30pm. Wasted a day. Thanks, Air Canada!

flight was delayed 6 hours for weather, then cancelled because of the crash in toronto, but none of the links to cancel or rebook my flights are working

They kept changing the gate (6 times in 30 minutes) and then left us on the plane for 4 hours before departure. Likely was the storm, which is understandable, but the lack of communication and the e constant running between gates at opposite ends of the airport really threw me and my friend for a loop.

Legitimately everything about this flight was awful, was also so delayed I never want to use air Canada again

Terrible all around. Flight was late and airplane was very uncomfortable. The crew were unhelpful and hid in the back. Did zero work. No entertainment.

I like the free beer and wine but not the delays to the departure time.

Never again flying economy on Rouge!!! Literally like sardines!!! Will try to change to better seats 3 seat arrangement only so so if traveling with family. Who wants to squished to stranger!!😖 Can’t say enough bad about this!!!

I booked and paid extra for exit door seats also pre paid for my luggage air Canada changed plains and I never got what I paid for and they made me pay for luggage again they also did this to my wife. They are the most unorganized company I have ever dealt with. I am sure I will never see the extra money I paid for the seats or the recharge for the luggage. They are subsidized by the taxpayers and don’t give a dam just a horrible way to do business

Overall the experience was excellent. Plane was clean but more importantly quiet. Recently, I’ve noticed that Airbus planes seem quieter than their Boeing counterparts. I definitely prefer flying in an Airbus plane.

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

Information on your arrival and departure airports

St. Louis (STL)
Toronto (YYZ)

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