Originally Posted by ESpen36

YES--definitely get a notarized letter of authorization signed by BOTH parents. When I was a teenager (ages 14-17 in the 1990s), I traveled alone to Mexico every summer to meet up with my parents who were already there. Without fail, the airline ALWAYS asked to see my notarized letter at the ticket counter every time. Immigration (INM) officers never asked to see the letter when I arrived, but the airline would not have allowed me to board the international flight to Mexico without the letter.

Unlike the process for some other LatAm countries, in my experience, the letter did not need to be in Spanish or authenticated at a Mexican consulate, BUT.... it did need to include specific dates of travel and be signed by both custodial parents in the presence of a notary.

I highly recommend preparing the letter.


*NB: I am not an attorney and the above does not constitute legal advice.