From a cost standpoint, beginning flight training too early can get quite expensive.
No. However, you must be at least 16 years old to solo an airplane (14 years old for operation of a balloon or glider), and 17 before you can be issued a private pilot certificate. Also, you need to be able to reach all the aircraft's controls. From a cost standpoint, beginning flight training too early can get quite expensive. Otherwise, there's no minimum age.