Avantair was an aircraft fractional ownership company, headquartered at Clearwater, Florida, U.S.A.. Avantair provided fractional ownership, leasing and time card options within a fleet of twin-turboprop-engined P.180 aircraft. Avantair operated the largest fleet of Piaggio P180 aircraft in the world with a total fleet size of 56 aircraft as of June 2012.[1] The company went out of business in 2013.[2]