If you are planning to fly to Canada this Summer, you need to be aware that random Covid testing has returned for international arrivals at four Canadian airports:
It is not clear what percentage of passengers will be chosen for testing or whether the decision will be weighted by the perceived risk of origin point of the incoming flight.
Anyone testing positive following a random test will have to undergo 10 days of quarantine.
There is no exemption from random testing for fully vaccinated travellers. Anyone who is not fully vaccinated would, in any case, be placed into 14 day quarantine on arrival.
Testing will not be done at the airport. You will be notified at the airport if you have been selected, and then have until the end of the following calendar day to take a supervised test.
The official details are on the Canadian Government website here.