Effective October 30, travelers 12 years of age and older who are flying on domestic, transborder or international flights departing from airports in Canada will need to be fully vaccinated in order to board.

For more information:

https://www.canada.ca/en/transport-canada/news/2021/10/mandatory-covid-19-vaccination-requirements-for-federally-regulated-transportation-employees-and-travellers.html

Accepted COVID-19 vaccines in Canada

https://travel.gc.ca/travel-covid/travel-restrictions/covid-vaccinated-travellers-entering-canada#determine-fully