The influence of selected single-component hydrocarbons on lean blowout behaviour of swirl-stabilised spray flames was investigated. Additional information on the spray characteristics was collected by Phase Doppler Anemometry (PDA) and Mie scattering measurements. The measurements were accomplished in a gas turbine model combustor under atmospheric pressure and at two different air preheat temperatures. The combustor featured a dual-swirl geometry and a prefilming airblast atomiser. The combustion chamber provided good optical access and yielded well-defined boundary conditions. Three singlecomponent hydrocarbons were chosen: one short and one long linear alkane (n-hexane and n-dodecane) and one branched alkane (iso-octane). Kerosene Jet A-1 was used as a technical reference. Results show noticeable differences in the lean blowout limits of the various fuels, at comparable flow conditions. By using the results of the measurements, of additional modelling and of an assessment of the fuel properties it was concluded that fuel differences in lean blowout in this combustor can be due to differences in the physical properties as well as in the chemical properties.