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. The intention of this letter is to provide consent for a minor child to travel without the company of both legal parents.There is no Canadian legal requirement for children to carry a consent letter. If children are not travelling with both their parents, (ie: if they are travelling alone, or with another adult), this form can be used to give permission. Use our Child Travel Consent form to prove that a child can travel without their parents or guardians. Parental consent documentation for travel to Canada and Mexico. A travel consent is used to when traveling with minor children whether on trips with organizations, family members, or one parent. A child travel consent form allows a minor to travel alone or with another person or group. Submit court orders with the child's passport application. 5. We have traveled with our minor nephew a few times and we always needed a letter of consent since we are not his parents.