After making their customs declaration, international travellers arriving into Calgary, Toronto, Montreal and Vancouver will be alerted by email if they have to test within 15 minutes.
Canada’s public health agency (PHAC) said the tests would be completed via in-person appointments with select partners external to the airport, or virtually via a self-swab test.
All passengers could be eligible for testing, irrespective of Covid vaccination status. Random testing was temporarily suspended on 11 June to assess how offsite testing could be done.
PHAC said the move to reintroduce testing would allow the country to respond quickly to new Covid-19 variants of concern or "changes to the epidemiological situation".