GO:0035350

The process in which flavin-adenine dinucleotide (FAD) is transported from one side of a membrane to the other by means of some agent such as a transporter or pore. FAD forms the coenzyme of the prosthetic group of various flavoprotein oxidoreductase enzymes, in which it functions as an electron acceptor by being reversibly converted to its reduced form. [GOC:bf, ISBN:0198506732]