How old do you have to be to travel on an airplane alone?

* Children ages 5-7 years can only fly on nonstop or direct flights with no change of planes. * Children ages 8-14 years can fly on nonstop or connecting flights, but may not connect to other airlines, with the exception of Delta Connection carriers (excluding AA Eagle) and Air France. * Children 15-17 are not required to have unaccompanied service but we will provide it when requested. * An unaccompanied child can not be booked on the last connecting flight of the evening. This is to prevent the need for an overnight stay in a hotel.