The effect on the physical, mechanical, and antibacterial properties of films composed of alginate-chitosan with the incorporation of oregano (EOO) or thyme (EOT) essential oils was evaluated. The results indicated that the incorporation of essential oil increased the thickness of the films, in addition to evidencing a significant effect on the colour variation towards the yellow tone, especially in the b* factor. On the other hand, the incorporation of essential oil significantly decreased the tensile strength, simultaneously increasing elasticity. Regarding antibacterial capacity, as the concentration of essential oil increases, the antibacterial capacity also increases. On average, the increase from 1% to 3% of EOO increased the antimicrobial capacity against Gram-negative and Gram-positive bacteria. These results suggest that films with the addition of oregano and thyme essential oils can be promising for food packaging applications with the ability to improve food safety and increase product shelf life by achieving functional packaging characteristics.