Unaccompanied 6-year-old boy put on wrong Spirit Airlines flight: "Incorrectly boarded"

An unaccompanied child traveling from Philadelphia to Fort Myers was "incorrectly boarded" onto a plane to Orlando, a Spirit Airlines spokesman said Sunday. The two cities in Florida are about 160 miles apart. 

Spirit did not provide additional details about the child or how the mistake on Thursday was made, but the airline's spokesperson did say an internal investigation was underway.

"The child was always under the care and supervision of a Spirit Team Member, and as soon as we discovered the error, we took immediate steps to communicate with the family and reconnect them," the airline spokesperson said.