16-year-old traveling alone on Frontier "mistakenly boarded" wrong flight to Puerto Rico

A 16-year-old boy "mistakenly boarded" a Frontier Airlines flight in Tampa on Dec. 22, expecting to land in Cleveland, the airline said in a statement Saturday. Instead, he ended up in San Juan, Puerto Rico.

The flights were boarding one after the other at the same gate, and the passenger boarded the San Juan-bound flight, which was departing first, Jennifer F. de la Cruz, a spokesperson from the airline told CBS News.

The passenger was "immediately flown back to Tampa on the same aircraft and accommodated on a flight to Cleveland the following day," said the airline, who says it has "extended its sincere apologies to the family for the error."