The Government of Canada has expanded restrictions for international travel, effective Feb. 22, including:

Travellers entering Canada by air will be required to take a COVID-19 test before leaving the airport to spend 3 nights in quarantine at a federal government-authorized hotel, which the traveller must pre-book and pay for, while awaiting test results. With a clear test result, travellers will proceed to the quarantine site identified in their quarantine plan.
Travellers entering Canada by land will be required to take a COVID-19 test on arrival at the border before proceeding to the quarantine site identified in their quarantine plan.
All travellers will also be required to take a COVID-19 test toward the end of their 14-day quarantine.
International students on study permits continue to be allowed into Canada to attend designated learning institutions assessed to have appropriate measures in place with respect to the mandatory quarantine.