$170 Find Cheap Flights from Canada to St. Louis - Compare and Save

In the last 5 days, the cheapest flight deal to St. Louis was found on the route from Calgary, at $312 return. The most popular connection is from Vancouver to St. Louis and KAYAK users have found round-trip deals for as low as $312 in the last 5 days.

Based on KAYAK data, the cheapest day to fly to St. Louis is Sunday where round-trip tickets can be as cheap as $394. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $596 on average.

The cheapest month for flights to St. Louis is January, where tickets cost $421 on average for return flights. On the other hand, the most expensive months are December and April, where the average cost of tickets from Canada is $577 and $557 respectively. For one-way flights, the best month to travel is November with an average price of $251.

The cheapest time of day to fly to St. Louis is generally in the afternoon, when round-trip flights cost $440 on average. The most expensive time of day to fly to St. Louis is generally in the morning, which is peak travel time and where the average cost of a ticket is $513.

If you’re looking for cheap airfare to St. Louis, 25% of our users found tickets to St. Louis for the following prices or less: From Toronto Pearson Intl Airport $513 round-trip, from Montreal Pierre Elliott Trudeau Intl Airport $538 round-trip.

To get a below average price, you should book around 4 weeks before departure, which saves you about 58% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

The duration of your flight to St. Louis depends on your departure and arrival airports. Obviously, any flights that include a layover will also be longer. The most popular routes to St. Louis on KAYAK are from Toronto, which takes 2h 05m, Montreal, which takes 2h 46m, Vancouver, which takes 5h 24m, and Calgary, which takes 9h 12m.

There are around 497 direct flights from within Canada to St. Louis every day. Most flights depart in the afternoon, with 34% of flights departing in the afternoon.

Each week there are around 3,474 direct flights from within Canada to St. Louis. The most common day for departures is Sunday, with 19% of flights taking off on this day.

There are not any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to St. Louis. Instead, there are 69 short-haul flights (up to 3 hour flight duration), with the most arriving from Toronto.