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STL - YYZ

C$ 144 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 5/6. 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
0 bags
Thu 6/6
Thu 13/6

Search hundreds of travel sites at once for deals on flights to Toronto

 
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
In the last 7 days, travellers have searched 42,573,820 times on KAYAK, and here is why:

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Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
2:35 p.m. - 12:15 p.m.STL-YYZ
20h 40m2 stops
6:30 a.m. - 2:23 p.m.YYZ-STL
8h 53m1 stop
C$ 336
Find Deal
Tue, 4 Jun - Tue, 11 Jun
2:35 p.m. - 12:15 p.m.STL-YYZ
20h 40m2 stops
8:20 p.m. - 1:05 p.m.YYZ-STL
17h 45m1 stop
C$ 353
Find Deal
Tue, 4 Jun - Tue, 11 Jun
10:10 a.m. - 1:04 p.m.STL-YYZ
1h 54mdirect
2:15 p.m. - 3:20 p.m.YYZ-STL
2h 05mdirect
C$ 606Air Canada
Find Deal
Sun, 15 Sep - Sat, 21 Sep
5:02 p.m. - 11:57 p.m.STL-YYZ
5h 55m1 stop
6:49 p.m. - 8:40 a.m.YYZ-STL
14h 51m1 stop
C$ 611Delta
Find Deal
Mon, 3 Jun - Mon, 10 Jun
4:05 p.m. - 7:06 p.m.STL-YYZ
2h 01mdirect
4:00 p.m. - 9:05 p.m.YYZ-STL
6h 05m1 stop
C$ 612Air Canada
Find Deal
Mon, 27 May - Wed, 29 May
5:31 p.m. - 11:58 p.m.STL-YYZ
5h 27m1 stop
2:15 p.m. - 3:21 p.m.YYZ-STL
2h 06mdirect
C$ 618United Airlines
Find Deal
Tue, 11 Jun - Fri, 14 Jun
1:10 p.m. - 10:48 p.m.STL-YYZ
8h 38m1 stop
12:30 p.m. - 5:20 p.m.YYZ-STL
5h 50m1 stop
C$ 622Delta
Find Deal
Tue, 16 Jul - Sun, 21 Jul
4:05 p.m. - 6:59 p.m.STL-YYZ
1h 54mdirect
6:15 a.m. - 9:56 a.m.YYZ-STL
4h 41m1 stop
C$ 626United Airlines
Find Deal
Tue, 17 Sep - Sat, 21 Sep
6:00 a.m. - 12:10 p.m.STL-YYZ
5h 10m1 stop
12:00 p.m. - 11:20 p.m.YYZ-STL
12h 20m2 stops
C$ 697WestJet
Find Deal
Wed, 19 Jun - Fri, 5 Jul
12:00 p.m. - 10:46 p.m.STL-YYZ
9h 46m1 stop
6:04 a.m. - 9:19 a.m.YYZ-STL
4h 15m1 stop
C$ 726WestJet
Find Deal
Wed, 22 May - Sun, 26 May

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

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.

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

The average price of all flights from St. Louis to Toronto Pearson Intl Airport clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to Toronto on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from St. Louis to Toronto. For your return ticket, we recommend flying on a Tuesday and avoiding Sundays for the best 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 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$ 283 on average. On the other hand, the most expensive months are July and March, where the average cost of tickets is C$ 766 and C$ 677 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from St. Louis to Toronto Pearson Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 63 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from St. Louis to Toronto found on KAYAK was with Air Canada for C$ 269. Air Canada proposed a round-trip connection from C$ 606 and Delta from C$ 611.

Which airlines fly direct between St. Louis and Toronto Pearson Intl Airport?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from St. Louis to Toronto Pearson Intl Airport.
There is just one airline that flies from St. Louis to Toronto Pearson Intl Airport direct and that is Air Canada. The best one-way deal found from Air Canada for the route is C$ 283.

How many flights are there between St. Louis and Toronto Pearson Intl Airport per day?

Each day, there are 2 nonstop flights that take off from St. Louis and land in Toronto Pearson Intl Airport, with an average flight time of 2h 01m. The most common departure time is 4:00 p.m. and most flights take off in the morning. Each week, there are 14 flights and there are the same amount of flights each day 2.

Which cabin class options are there for flights between St. Louis and Toronto Pearson Intl Airport?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from St. Louis to Toronto take?

The duration of a direct flight to Toronto from St. Louis is typically 1h 54m. The journey crosses a distance of 1,692 km.

What’s the earliest departure time from St. Louis to Toronto?

Early birds can take the earliest flight from St. Louis at 9:50 am and will be landing in Toronto Pearson Intl Airport at 12:51 pm.

What’s the latest departure time from St. Louis to Toronto?

If you prefer to fly at night, the latest flight from St. Louis to Toronto Pearson Intl Airport jets off at 4:05 pm and lands at 7:06 pm.

Good to know

Low season

January

High season

May

Cheapest flight

C$ 144
Best time to beat the crowds (43% less expensive on average)
Most popular time to fly and prices are also 36% lower 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$ 105 for a one-way ticket and C$ 246 for a round-trip.

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

    All the following airlines offer inflight Wi-Fi service on the St. Louis to Toronto flight route: Air Canada, Lufthansa, Alaska Airlines, United Airlines, Iberia, Virgin Atlantic, Delta, British Airways, Finnair, and American Airlines.

  • 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.

See more FAQs

Top tips for finding a cheap flight from St. Louis to Toronto

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 395 or less one-way and C$ 894 or less round-trip.

Prefer to fly non-stop from St. Louis to Toronto?

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

Nonstop departures

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 nonstop flights

Nonstop returns

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 nonstop flights
See more nonstop flights

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.
7.0
Air CanadaOverall score based on 6915 reviews
6.2Food
7.0Comfort
7.8Crew
6.8Entertainment
7.2Boarding
Airline reviews

You do not have a space for flight cancelled. BUT!!! Air Canada handled it great. Was booked on another airline for the next day. The original flight was booked solid. But he precheck by the maintenance found a mechanical problem and the plane was not safe to fly. It was an inconvenience to have to wait until next day but I would rather arrive safely.

4.0 OkayAnonymous, May 2024CLT - YYZ
Read more about Air Canada reviews

You do not have a space for flight cancelled. BUT!!! Air Canada handled it great. Was booked on another airline for the next day. The original flight was booked solid. But he precheck by the maintenance found a mechanical problem and the plane was not safe to fly. It was an inconvenience to have to wait until next day but I would rather arrive safely.

Very good other than we have to wait for one crew and we’re delayed and the pilot and his co- pilot has to make a difference to be right on time arrival. Disappointed about no food service also.

I had written all my complaints on my trip from Grand Junction to Denver so I will repeat it here! I was absolutely appalled that I had to pay for a regular seat that I choose 24 hrs before boarding! Also I checked my large bag which I had to pay for as well, and by the time I boarded all the room in the bins were gone so also had to check that one. I noticed people pulling out oversized suitcases, bigger than the measurements stated for carry on, and also large pack packs stuffed full! So these people were taking up 2 or 3 spaces that the rest of us should have been able to use but couldn’t! NoTV on the flight! Thankfully I had downloaded the United Airlines app and was able to watch movies on my phone. Don’t remember the last time I flew in a plane with no movie screens!

The crew was friendly, the seats are too small. Air travel is barely tolerable anymore.

Food was icecold or frozen including breakfast. Hopeless service. Rude crew.

The flight was very uncomfortable and there was no snacks served for the 13 hours international flight. In addition, the flight was delayed 3 hours

Due to a strike taking place with the airline, it negatively impacted my flight in multiple ways. My flight was delayed over 2 hours and the food served was mediocre at best.

Cabin crew were great. Seats are criminal for tall people

My flight was great! Gate attendants and crew were great… pleasant and in good spirits. Flight delayed several hours and we were well informed of the status while on plane. Thank you!

The fact that I got to Toronto alive and well and safe is a huge plus. I thank the captain and crew for a safe flight The comfort of the aircraft leaves much to be desired. Human beings should not have to be that cramped and squashed on a flight that we pay a lot for and even have to pay for lousy food choices The cabin crew were pleasant and helpful Kudos to them as the flight was packed to capacity and there was a lot of work for them in a short space of time All in all a good experience, but too cramped

Book cheap flights from St. Louis to Toronto

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Toronto found on KAYAK in the last 72 hours.
5/6Wed
1 stop
15h 47mSTL-YYZ
C$ 144
30/5Thu
2 stops
10h 50mSTL-YYZ
C$ 170
30/5Thu
1 stop
26h 56mSTL-YYZ
C$ 180
24/6Mon
directAir Canada
1h 59mSTL-YYZ
C$ 269
18/8Sun
directAir Canada
1h 59mSTL-YYZ
C$ 276
21/6Fri
1 stopDelta
6h 42mSTL-YYZ
C$ 283
7/6Fri
1 stopDelta
5h 34mSTL-YYZ
C$ 345
21/6Fri
directUnited Airlines
1h 59mSTL-YYZ
C$ 360
30/6Sun
2 stopsWestJet
13h 38mSTL-YYZ
C$ 379
19/5Sun
directUnited Airlines
2h 05mSTL-YYZ
C$ 462

Search by stops

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Search by price

Last minute flights from St. Louis to Toronto

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Toronto that are departing in the next 10 days.
11/5Sat
multi-stop
7h 47mSTL-YYZ
14/5Tue
multi-stop
14h 58mYYZ-STL
C$ 488
11/5Sat
multi-stop
9h 44mSTL-YYZ
14/5Tue
multi-stop
14h 58mYYZ-STL
C$ 608
10/5Fri
multi-stop
12h 27mSTL-YYZ
12/5Sun
multi-stop
19h 54mYYZ-STL
C$ 617
11/5Sat
multi-stop
35h 16mSTL-YYZ
14/5Tue
multi-stop
15h 26mYYZ-STL
C$ 651
8/5Wed
multi-stopDelta
17h 30mSTL-YYZ
11/5Sat
multi-stopDelta
24h 56mYYZ-STL
C$ 1,140
10/5Fri
multi-stopAmerican Airlines
8h 59mSTL-YYZ
12/5Sun
multi-stopAmerican Airlines
9h 32mYYZ-STL
C$ 1,273
10/5Fri
multi-stopAmerican Airlines
16h 05mSTL-YYZ
12/5Sun
multi-stopAmerican Airlines
17h 29mYYZ-STL
C$ 1,329
10/5Fri
multi-stopDelta
7h 30mSTL-YYZ
12/5Sun
multi-stopDelta
10h 23mYYZ-STL
C$ 1,557
10/5Fri
directUnited Airlines
2h 01mSTL-YYZ
12/5Sun
multi-stopUnited Airlines
6h 08mYYZ-STL
C$ 1,651
10/5Fri
directUnited Airlines
2h 05mSTL-YYZ
12/5Sun
directUnited Airlines
2h 06mYYZ-STL
C$ 1,934

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St. Louis - Toronto Flights

Departure:

St. Louis (STL)United States

Destination:

Toronto (YYZ)Canada

Return flight deals:

Toronto - St. Louis

Cabin classes:

C$ 793