Comparing 100,000 flight hours to 100,000,000 miles seems strange to me. If you assumed an average speed of 50MPH, that would be: Commercial Aviation (per

Comparing 100,000 flight hours to 100,000,000 miles seems strange to me. If you assumed an average speed of 50MPH, that would be: Commercial Aviation (per 100,000 flight hours): 0.022 General Aviation (per 100,000 flight hours): 1.11 Motor Vehicle: (per 100,000 driving hours): 0.075 This is data from 2000 though.