According to the most recent data, there are 242 active airports in Canada. The largest airport by number of direct routes (196) is Toronto Pearson International.
Below you can see the 20 airports with the most direct flights. You can find all 242 airports on the map or in the drop-down list.
You can find more information about the country here: Canada.
* Active airport means an airport serving scheduled or charter flights available in global distribution systems.