While it's legal for grandparents to transport their grandchildren without a letter of permission, it's a safeguard against any potential emergencies or law enforcement issues. Getting the letter of permission notarized by a licensed official adds an extra layer of security to your document.

Yes, it is highly recommended and often mandatory for a child to carry a formal "Consent to Travel" letter when traveling with grandparents or any adult other than both legal parents. In 2026, border officials and airlines have intensified efforts to prevent child abduction, making written permission a necessity for international travel. This letter should be signed by both parents (or whoever has legal decision-making responsibility) and ideally notarized to prove the signatures are authentic. The letter must include the child’s full name, birth date, and passport details, as well as the accompanying adult's information, the travel dates, destinations, and emergency contact numbers for the parents. For travel to countries with strict entry requirements like Canada, South Africa, or Brazil, you should also carry a copy of the child’s long-form birth certificate to prove the parental link. Even for domestic travel, some airlines require this documentation to avoid delays. Without a notarized letter, grandparents may find themselves questioned by immigration officers or even denied boarding at the gate, potentially resulting in missed flights and significant legal stress.