The first family's Christmas vacation to Hawaii in 2013 may have cost about $8 million. Of that total, at least $316,000 was for the Secret Service.
GALLERY: The president took some time off to hit the greens:
But the real cost is from Air Force One. It costs more than $210,000 per hour to operate the plane, and the Hawaii trip took 36.9 hours of flight. That adds up to more than $7.7 million dollars.
It's hard to tell for sure how Obama's vacation compares to the costs of others presidents' vacations. We can compare the amount of time spent on vacations among presidents, though.
As of December 2014, Obama had taken 161 vacation days. At the same point in their second terms George W. Bush had taken 405, Bill Clinton had taken 174 and Ronald Reagan had 390.
GALLERY: President Obama also attracted plenty of attention during a hike: