Kelly passed away in the home last year (July 2020), after a long battle with breast cancer.
Travolta bought the five-bedroom mansion, which is situated on Clearwater Harbor, in 2017. Property records show he paid $3 million (£2.2 million) at the time, according to Page Six.
Earlier this year, the "Pulp Fiction" star sold another longtime residence - a waterfront pad in Maine - for $5 million (£3.6 million). And in January 2020, he offloaded his $18 million (£13 million) Spanish-style Los Angeles estate.
Travolta currently owns a $2.65 million (£1.9 million) six-bedroom home in a gated community in Calabasas, California. He and Preston, who wed in 1991, bought the house in 2019.
Property aside, John has been keeping Kelly's memory alive. In honor of 2021 Mother's Day, the "Gotti" actor shared Instagram photos of his wife in a bed with him and two of their children, Ella and Benjamin, as well as a snap of her smiling happily while holding their son Jett, who passed away at 16 in 2009.
Along with the happy family pictures, the 67-year-old Hollywood star uploaded a loving tribute that read, "Dearest Kelly, you brought into my life three of the most wonderful children I have ever known. We love and miss you. Happy Mother's Day."