Convective vaporization of single bicomponent droplets under different flow conditions is investigated. Pure and mixture droplets of n-heptane and n-decane are suddenly exposed to cold or heated laminar or turbulent flows generated by a controlled flow system. A real-time image analysis procedure has been developed to determine the instantaneous vaporization rates. Distillation-type vaporization is observed for all the mixtures investigated under stagnant or cold flow conditions. It is shown that the first vaporization sequence is intrinsically nonstationary and that the quasi-steady vaporization rate of the second sequence is equal to that of pure n-decane under the same conditions. The preferential vaporization process disappears when the flow is moderately heated. However, another nonstationary process, corresponding to the heatup of the droplet, appears. In heated convective conditions, a constant vaporization rate equal to that of the less volatile component characterizes the post-preheating period. These experimental results are discussed by using a formalism based on the comparison between the droplet vaporization rate and the liquid-phase mass diffusion rate. Preliminary experimental results are also reported on bicomponent droplet vaporization in a turbulent flow, in the distillation-type vaporization regime.