$191 Find Cheap Flights from Toronto to St. Louis - Compare and Save

If your flying dates are flexible, you should consider flying to St. Louis 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 Toronto to St. Louis. For your return ticket, we recommend flying on a Friday and avoiding Saturdays for the best deals.

The cheapest month for flights from Toronto Pearson Intl Airport to St. Louis is January, where tickets cost $422 (return) on average. On the other hand, the most expensive months are April and June, where the average cost of round-trip tickets is $801 and $592 respectively.

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 $440 on average.

To get a below average price on the flight from Toronto Pearson Intl Airport to St. Louis, you should book around 3 weeks before departure, which saves you about 55% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

In the past 5 days, the cheapest round-trip tickets from Toronto to St. Louis were found on American Airlines ($312) and Air Canada ($448).

There is just one airline that flies from Toronto Pearson Intl Airport to St. Louis direct and that is Air Canada. The best round-trip deal found from Air Canada for the route is $256.

Chicago (ORD) is the top choice – 54% of KAYAK users who clicked on 1-stop flights from Toronto to St. Louis picked an itinerary connecting there.

Flights via Detroit (DTW) offer the most affordable fares, with an average round-trip price of $553.

Consider flying via Detroit (DTW) for the shortest journey. The average one-way travel time for flights connecting there is 4h 37m.

If you prefer a quick connection, Minneapolis (MSP) often has the shortest layovers from Toronto to St. Louis, with an average of 0h 51m.

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Each day, there are 2 nonstop flights that take off from Toronto Pearson Intl Airport and land in St. Louis, with an average flight time of 2h 06m. The most common departure time is 7:00 pm 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).