The Mexican National Immigration Institute (INM) requires special documentation with regard to minor (under 18 years of age) travel if: The minor is departing Mexico (i.e. not entering); The minor is traveling by air or sea; The minor is traveling alone or with someone other than a parent or legal guardian who is of legal age (grandparent, uncle/aunt, school group leader, etc.); and The minor is using Mexican documents to travel (birth certificate, passport, temporary or permanent Mexican residency). The minor will be required to present a document showing the consent to travel from at least one parent (or legal guardian) in order to leave Mexico. A parent may fill out the authorization document online on  INM’s website .  This document does NOT need to be notarized or have an apostille.  Rather, the parent prints three copies and must obtain official stamps from INM at the airport on the day of travel prior to passenger check-in with the airline.  For mo...