The Government of Canada announced the extension of COVID-19 travel restrictions, from the United States as well as all other countries, until July 21, 2021.
The ban on crossing the border by land, air and sea for leisure and tourism is therefore maintained until July 21 and all testing and quarantine measures will continue to be enforced.
The measures still do not affect trade, and the international transport of goods is allowed.
The Government also announced that, beginning July 5, 2021 at 11:59 p.m. EDT, fully vaccinated travellers who are permitted to enter Canada will not be subject to the federal requirement to quarantine or take a COVID-19 test on day-8. In addition, fully vaccinated travellers arriving by air will not be required to stay at a government-authorized hotel. Certain obligations will still apply, such as screening tests, prior to arrival as well as upon arrival. Travelers must verify all applicable conditions in order to qualify.
For additional information see the Canada Border Services Agency’ web page Coronavirus disease (COVID-19): Current border measures and requirements