What plan do you have? Do you have an International Plan? Have you looked at TravelPass? Some plans include Canada and Mexico for calls, text and data. If not, adding TravelPass will trigger a $5/day charge and use your current plan rates when used in Canada (or when hitting a Canadian tower close to the border).
Keeping you connected while traveling in Canada is important. We are here to assist. jav6 asked some great questions. Here is our international web page https://www.verizonwireless.com/solutions-and-services/international/. Please click on "Get Started" and you will be taken to sign in to your online account to confirm your options. Does this help?