Tom Price (HHS secretary) often uses super expensive charter jet flights. It is reported that Price has recently used at least 5 privately chartered jet flights to the tune of at least $20,000 each (some reportedly $60,000) http://www.politico.com/story/2017/09/19/tom-price-chartered-planes-flights-242908 This does not include yet to be divulged flights earlier in his tenure as secretary. At least one flight could have been done faster if he drove (when one accounts for time to get to airport, transfer to aircraft, aircraft taxi to runway, the 30 min flight, taxi to ramp, unload, drive to destination), by car estimated about 2 hours. Trump and team love to jet around. In contrast, Obama's administration was very critical on charter jets.