As of October 1, 2022, Canada is ending all travel, testing, and border requirements and restrictions related to COVID-19. This includes vaccination, mandatory use of ArriveCAN, and any testing or quarantine and isolation requirements for those entering Canada by land, sea, or air. Even masking on board is no longer required, although still recommended.
Since March 2020, when the U.S. northern border was closed due to COVID-19, the restrictions have been particularly harsh for border community businesses including tourism. Even the lifting of many restrictions in August 2021 appeared not to return businesses even close to pre-pandemic levels. Not only that, but the ArriveCAN system, which was supposed to make border crossing easier, may have been resulting in delays and confusion. The hope is that elimination of all restrictions will give a boost to the border community economies in Canada.
Since March 2020, the United States and Canada have generally acted in unison when adding or eliminating restrictions. This time, Canada is acting on its own. As of now, all non-immigrant, non-U.S. citizen air travelers to the United States still must be fully vaccinated and provide proof of vaccination status prior to boarding an airplane to the United States. In addition, to enter the United States at ferry land ports of entry (POE) and ferry terminals, individuals must be fully vaccinated. U.S. congressmen representing border communities that have been hurt economically by the restrictions are pushing for the United States to eliminate its restrictions as well.
With regard to Canada, the U.S. Embassy there continues to suggest consulting https://travel.gc.ca/travel-covid for updated information on any possible provincial regulations or restrictions regarding COVID-19 within Canada.