What is the average investment made in the process of becoming a pilot?

The average investment of money to obtain the average amount of flight training (dual, with an instructor & solo) for a private pilot license/certificate is $10,000. The average investment of time required to study and pass the FAA private pilot written exam is about 500 hours. The average investment to obtain an Airline Transport Pilot (ATP) license/certificate is 10X that of a private pilots license: $100,000 to obtain all necessary instruction and interim ratings (private, instrument, commercial, multi, ATP etc.) including approximately 5000 hours of time to study all the instruction materials to pass the required add-on knowledge exams, likely over the course of several years.