Great question — answering as the UphillTech team:
If the airline sells the connection, they think you have a very good probability of making it (if there are no major issues): airports and airlines work out a "minimum connection time" (MCT) for various combinations of flights, and they won't sell a connection if it goes below the MCT. The standard MCT at Pearson is 2 hours, but it goes down to 1 hour for most Air Canada international-to-international connections within Terminal 1. If you miss your second flight through no fault of your own, Air Canada will rebook you on the next available flight (or possibly reroute you through a different city). It may be the next day, though. Toronto airport has a connection guide which details the...
Full answer by jcaron: https://travel.stackexchange.com/a/201558 (CC BY-SA 4.0).
Need it done for your business? UphillTech.
