Per the Interim Order Respecting Certain Requirements for Civil Aviation Due to COVID-19, passengers and flight crew are required to wear a mask for the duration of all flights to and from Canada, regardless of the flight’s last point of departure or the operating carrier. These provisions of the Interim Order include both the responsibility of the air carrier to advise passengers of the obligation to wear a mask, as well as their requirement to ensure passengers do so. They also require passengers to comply with such instruction. Transport Canada is in constant communication with all carriers, both foreign and domestic, to ensure a proper understanding of Canadian regulations.