Air-drying of fresh and osmosed plantain and cooking banana slices was modeled using four equations. Temperature dependence of moisture diffusivity (D eff) was described by Arrhenius relationship, and activation energy (E a) was calculated. Drying of fresh and osmosed commodities showed two falling rates. D eff of fresh and osmosed plantain and cooking banana varied between 3.80 × 10−10–8.62 × 10−9 and 1.29 × 10−10–3.91 × 10−9 m2/s, respectively. E a for drying of cooking banana and plantain were 12.30–24.09 and 12.15–19.93 kJ/mol, respectively. Page showed higher correlation coefficient, lower root mean-squared error, chi-squared and percentage error of 0.5563–0.9995 and 0.4692–0.999, 9.86 × 10−9–0.03683 and 9.06 × 10−5–0.2125, 9.73 × 10−5–1.37 × 10−1 and 9.06 × 10−5–2.125 × 10−1, and 0.447–4.412 and 0.049–8.707 for plantain and cooking banana, respectively.