As of July 19, 2022, fully vaccinated travellers arriving by air in Canada will have to undergo random COVID-19 tests again. Testing will be conducted at Vancouver, Calgary, Montreal, and Toronto’s major airports. Those selected for a random test will receive an email notification within 15 minutes of finishing their customs declaration describing how to get a test. If the result of the arrival test is positive, passengers must spend 10 days in isolation, even if the province or territory’s requirement is less than that.