Use ArriveCAN to Enter Canada from the United States (and Other Locations)
Anyone entering Canada from the United States (or other locations) must use ArriveCAN to provide mandatory travel information before and after your arrival in Canada: www.canada.ca/en/public-health/services/diseases/coronavirus-disease-covid-19/arrivecan.html
ArriveCAN is free and secure, and is available for iOS and Android, and via the web.