Tours from Skagway that cross the Canadian border do require valid passports and you must bring them with you to participate in the tour. Tours that require passports have this information listed in the tour description and the voucher. Passports will be required to go through the Canadian customs post, as well as to re-enter the United States. Passports are required for all adults and children 16 or older. Children 15 and under should have an original or certified copy or birth certificate or a Passport. If one or both parents are not traveling with the child, a notarized letter of authorization from the absent parent(s) is also necessary to cross into Canada. Some nationalities may also require a Canada and/or USA Visa. (Single-entry is acceptable). Bring all original documentation, no copies are allowed. If passengers show up for the tour without the proper ID, they will not be allowed to board. While we will attempt to accommodate passengers lacking identification, there is no guarantee that suitable arrangements can be made, and no refund will be given under these circumstances. Passengers with felonies, DUI, or criminal charges are not allowed entry into Canada. If you have further questions about passport requirements, please visit this link.