Whether traveling alone or accompanied by an adult, each child must travel with his own travel documents plus supporting documentation: i.e. birth certificate showing the names of both parents and/or legal documents pertaining to custody.
Also the adults traveling with the minor children are strongly advised to hold a letter of travel consent signed by the parent(s) or guardian(s) with legal custody. The letter must include the signor’s address, phone details, authorization to travel, the destination and length of stay. If a parent/guardian is divorced or deceased, custody document or death certificate is required.
When travelling to the United States and Canada from other countries: It is strongly recommended that you carry a signed letter of travel consent by the parent(s) or legal guardian. This document must contain contact information (address, phone number, etc.). This letter should be notarized. If the parent(s) or guardian(s) are divorced or deceased a custody document or death certificate is required.
When travelling within the United States and Canada: It is strongly advised that when travelling with children within Canada you carry a letter of travel consent signed by the parent(s) or legal guardian. Although not required, this letter should be notarized.
Travelling from Canada/United States outside: All travellers, including children, require a valid passport. Some countries may also require a visa. Children may also require additional documentation such as a birth certificate.
To find out more about the entry requirements please contact your travel agent or your port of entry, most airports can provide you with very helpful information.