What is the latest time you can call CANPASS before departure?

The correct answer is that you can call CANPASS a minimum of 2 hours before departure. This is important as CANPASS provides expedited border clearance services for pre-approved travelers. Notifying them at least 2 hours in advance allows adequate time to process your information and finalize arrangements with border authorities.

This lead time is critical in ensuring compliance with regulations and procedures that facilitate smooth crossings at the border, as insufficient notification could result in delays or denials of entry into the respective country.