Yes. All travellers, even those who are fully vaccinated, are still required to wear a face mask throughout the airport and while on board their flight except for brief periods while eating, drinking or taking oral medication, or unless otherwise exempt. Failure to comply with the Interim Order Respecting Certain Requirements for Civil Aviation Due to COVID-19 could result in a fine of up to $5,000.
The country you are visiting may also require that you wear a face mask on arrival at their airport, as well as in public spaces, including at your hotel. Please ensure you are familiar with the restrictions imposed by the local authorities at your destination and at your hotel before travelling.