The objective of this study was to determine the desorption isotherms of Lavandula officinalis L. flowers at relative humidity and temperature levels ranging from 11 to 85% and from 30 to 50ºC, respectively. Five popular models (modified Henderson, modified Oswin, modified Halsey, modified Chung – Pfost and GAB equations) in the literature were fitted to the experimental data in order to verify their adequacy to describe the EMC of the Lavandula officinalis L. flowers (Chung and Pfost, 1967; Halsey, 1985; Oswin, 1946).