Cheapest return flights from St. Louis to Toronto in December from 306€

AirHint found the following cheapest return flights from St. Louis (STL) to Toronto (YYZ) in December 2025 (see full year).

Return flights

13 Dec - 14 Dec Frontier Airlines
12 Dec - 13 Dec Frontier Airlines
24 Dec - 30 Dec Southern Airways Express
22 Dec - 03 Jan Frontier Airlines
19 Dec - 24 Dec Frontier Airlines
06 Dec - 10 Dec Frontier Airlines
06 Dec - 10 Dec Air Canada direct

Also check the deals for one-way flights from St. Louis to Toronto in December.

Powered by

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Toronto

Cheap car rent in Toronto

Feel free to contact us with any feedback or request another flight research.