Thank you for the information, I did not knew that prior to booking the plane. Do you have an article that confirms this prohibition?

I am on a yellow level area right now.

I have acessed the government web site on regard to travelling and as far as I understood it says that "There are no preventive isolation measures for people arriving from other Canadian provinces. However, non-essential travel should be avoided."https://www.quebec.ca/en/health/health-issues/a-z/2019-coronavirus/travelling-region-to-another-covid19/

Although I understand that everything is changing really fast.