A consent letter demonstrates that a child has permission to travel outside Canada from every parent or guardian who is not accompanying them on the trip. There is no Canadian legal requirement for children to carry a consent letter.What information should be in a travel consent letter? Parental consent documentation for travel to Canada and Mexico. I was preparing documents and someone told me that I might need minor travel consent form since I am not leaving. Both parents should be present to apply for a minor child's passport (recommended). When applying for a passport, two separate fees and forms of payment are required. Be sure to review the accepted forms of payment in the Passport Fees section.