Flow properties are necessary to select the right powder handling processes and design the industrial equipments for commercialization. The present study aims to investigate the particle size distribution and flow properties - cohesion, caking and powder flow speed dependency (PFSD) test, of spray-dried bee pollen enriched milk powder (packed in ALP, BOPP/LDPE, and PET/Al foil/LDPE) during storage at different temperatures (5, 25 and 40 °C) for 12 months. Cohesion, caking properties and compaction coefficients differed significantly (p < 0.05) according to storage period, temperature, and packaging materials. The powder samples had particle diameter (D50) ranging from 22.39 ± 0.16 to 157.48 ± 0.25 μm which increased abruptly after 6 months. Cohesion index showed the nearly easy flowing behavior of ALP packed powder (11.08 ± 0.10 to 14.67 ± 0.11 mm) stored at 5 and 25 °C. A decrease in column height ratio (1.00 ± 0.01 to 0.813 ± 0.011) and increase in cake height ratio (0.151 ± 0.009 to 0.558 ± 0.026) demonstrated the compressible behavior and susceptibility of powder to cake, respectively. PFSD test showed smaller values of compaction coefficient at higher speeds (10 mm/s and 100 mm/s) which established the free-flowing nature of powder samples at higher speeds. The findings of this work may foster processing and applications of bee pollen enriched milk powder in food industry.