The aim of the present work is to compare different sources of silica in the deposition of bioactive glass coatings by plasma spraying from liquid feedstocks. Following a typical solgel route for glass development, alkoxides of Si and P (TEOS and TEP respectively), and nitrates of Ca, and Na were dissolved in water to obtain the first 45S5 bioactive glass feedstock. From that feedstock, TEOS was totally replaced by colloidal silica aqueous suspensions in order to develop different liquid feedstocks. All of them were characterised in terms of viscosity and stability, and deposited by plasma spraying employing a monocathode plasma torch (F4MB, Oerlikon Metco) under two different standoff distances. Then, the microstructure and phase nature of the sprayed coatings were analysed by scanning electron microscope and Xray diffraction, respectively. All feedstocks developed preserved the composition of the 45S5 bioactive glass and showed adequate viscosity and stability to be used in plasma spraying. However, significant differences were found in the microstructure of the obtained coatings depending on the silica source employed. Moreover, when the spraying distance was reduced, the microstructure of all coatings was enhanced regardless the silica source. Concerning the crystalline phases of the coatings, they were only affected by the standoff distance. For all feedstocks deposited with the higher standoff distance, crystalline peaks of combeite and tricalcium silicate were found in the coatings. However, by reducing the standoff distance, these crystalline peaks disappear resulting in totally amorphous coatings. This work has been supported by Research Promotion Plan of the Universitat Jaume I (PREDOC/2015/50) and the Spanish Ministry of Economy, Industry and Competitiveness and European Regional Development Fund (MAT2015-67586-C3-R).