Mexican authorities consider that the passport is proof enough of the consent of both parents to allow the minor to travel with either one of them. For this reason, minors can go to Mexico with just one of their parents without the written permission of the other.

Minors can travel alone but if they are under 16, they must carry along a written permission of their parents in Spanish or English, signed before the closest Mexican Embassy or a public notary or the police office of your locality. This applies also for minors traveling with an adult different to their parents.