Tips for an Effective Child Permission Letter List important information about your child and any other relevant info. Mention the scope of what you are/aren't permitting. Note what time period the authorization applies for. Include your contact info and sign your name with a witness present.
Typically, minors under the age of 18 do not have to present identification for domestic U.S. travel. Airlines will accept identification from the responsible adult on behalf of the minor(s). For international travel, minors under the age of 18 must present the same travel documents as the adult.