@Jamie number of passengers has little to do with the relatively high number of crashes (unless the planes are overcapacity, which is a completely different problem) a more accurate measure would be the busiest airports by NUMBER OF FLIGHTS:
1. O'Hare International Airport Chicago, Illinois, United States
2. Hartsfield-Jackson Atlanta International Airport Atlanta, Georgia, United States
3. Dallas/Fort Worth International Airport Coppell, Euless, Texas, United States
4. Los Angeles International Airport Los Angeles, California, United States
5. Beijing Capital International Airport Chaoyang, Beijing, China
6. Denver International Airport Denver, Colorado, United States
7. Charlotte/Douglas International Airport Charlotte, North Carolina, United States
8. McCarran International Airport Las Vegas, Nevada, United States
9. George Bush Intercontinental Airport Houston, Texas, United States
10. Frankfurt Airport Frankfurt, Hesse, Germany
only ONE asian airport is in the top ten, which means more planes are crashing PER FLIGHT to an asian airport.