The costs of the trips -- borne by taxpayers -- are difficult to measure, but they're expensive. When he uses the familiar blue-and-white reconfigured 747 as Air Force One, it costs $100,219 an hour to operate, according to the Air Force. And that's just HIS plane.
There also are cargo planes, used to fly in armored limousines, helicopters, staff and other equipment, as well as the Secret Service. A single Air Force C-17 cargo jet, for example, costs $6,960 an hour, according to the Congressional Research Service.
A total of 77 other aircraft were used on one multi-country trip to Asia by former President Bill Clinton in 2000, according to the Air Force Times, including 14 C-17 Globemasters, 12 C-5 Galaxys, three C-141 Starlifters and two C-130 Hercules. ABC News at the time estimated the cost of that trip at $50 million.
http://tinyurl.com/yz8sjfj
I seem to recall that particular adventure being described as consuming “one-third of the entire airlift capacity of the US Air Force”.