Given how common it is for countries with oppressive regimes to bar or heavily restrict exit, it is noted in article 13 here: https://www.un.org/en/about-us/uni

Given how common it is for countries with oppressive regimes to bar or heavily restrict exit, it is noted in article 13 here: https://www.un.org/en/about-us/universal-declaration-of-human-rights https://www.un.org/en/about-us/universal-declaration-of-huma... The point is if another destination would have you, it is a violation of your right to be unable to freely exit. If hypothetically Canada did not allow you to board a non-chartered plane to emigrate I would argue this would be encroaching if not outright violating this right.