New Travel Restriction Updates Due to COVID-19

Beginning on April 20 at noon EDT (01:00am on April 21, JST), all air passengers are required to carry a non-medical mask or face-covering to cover their mouth and nose during travel when traveling to and within Canada. Air travellers will be asked to cover their mouth and nose when required, including:

at Canadian airport screening checkpoints, where the screeners cannot always keep two metres of separation between themselves and the traveller;
when they cannot physically distance from others, or as directed by the airline employees; and
when directed to do so by a public health order or public health official.

It is the travellers’ responsibility to bring a mask or face covering when travelling. Travellers without a mask or face covering will no be provided one and the air operator will be required to deny boarding the aircraft.

Please see more details here.