Oven for cooking foods comprising: - a support structure which encloses a cooking chamber within which the foods to be cooked are intended to be placed; - a fan placed within said cooking chamber and actuatable for generating, within said cooking chamber, a flow of recirculation air adapted to uniformly distribute hot air within said cooking chamber, and such fan is provided with a rotation axis thereof, is extended along said rotation axis between a front side and a rear side directed in opposite verses with respect to each other and is provided with a peripheral side extended around said rotation axis between said front side and said rear side; - heating means mounted on said support structure, operatively associated with said cooking chamber, actuatable for heating the air within said cooking chamber and placed in front of the peripheral side of said fan in order to intercept the flow of recirculation air generated by said fan; said fan comprising: - a support body actuatable to rotate around said rotation axis and comprising at least one support plate placed substantially orthogonal to said rotation axis and provided with a first face which delimits said rear side and a second face (6") directed towards said front side; - multiple blades fixed to said support body and placed around said rotation axis; each of said blades comprising at least one plate-like body, provided with two opposite faces, and being provided with: - a rear edge, which is fixed to the second face (6") of said support plate; - an external edge, which is placed on said peripheral side; and - an internal edge, which is placed to connect between said rear edge and said external edge and faces said front side; at least one portion of the plate-like body of said blade having undulated profile which defines, on each said face, multiple undulations side-by-side; each said undulation being extended, transverse to said undulated profile, along an extension trajectory, which has main size with respect to the length and/or to the height of said undulated profile and is, for at least one main section thereof, tilted with respect to said rotation axis; said oven being characterized in that the extension trajectory of at least some of said undulations is extended from a front end placed on said internal edge and terminates with a lateral end placed on said external edge. - a support structure which encloses a cooking chamber within which the foods to be cooked are intended to be placed; - a fan placed within said cooking chamber and actuatable for generating, within said cooking chamber, a flow of recirculation air adapted to uniformly distribute hot air within said cooking chamber, and such fan is provided with a rotation axis thereof, is extended along said rotation axis between a front side and a rear side directed in opposite verses with respect to each other and is provided with a peripheral side extended around said rotation axis between said front side and said rear side; - heating means mounted on said support structure, operatively associated with said cooking chamber, actuatable for heating the air within said cooking chamber and placed in front of the peripheral side of said fan in order to intercept the flow of recirculation air generated by said fan; - a support body actuatable to rotate around said rotation axis and comprising at least one support plate placed substantially orthogonal to said rotation axis and provided with a first face which delimits said rear side and a second face (6") directed towards said front side; - multiple blades fixed to said support body and placed around said rotation axis; each of said blades comprising at least one plate-like body, provided with two opposite faces, and being provided with: - a rear edge, which is fixed to the second face (6") of said support plate; - an external edge, which is placed on said peripheral side; and - an internal edge, which is placed to connect between said rear edge and said external edge and faces said front side; - a rear edge, which is fixed to the second face (6") of said support plate; - an external edge, which is placed on said peripheral side; and - an internal edge, which is placed to connect between said rear edge and said external edge and faces said front side; at least one portion of the plate-like body of said blade having undulated profile which defines, on each said face, multiple undulations side-by-side; each said undulation being extended, transverse to said undulated profile, along an extension trajectory, which has main size with respect to the length and/or to the height of said undulated profile and is, for at least one main section thereof, tilted with respect to said rotation axis; said oven being characterized in that the extension trajectory of at least some of said undulations is extended from a front end placed on said internal edge and terminates with a lateral end placed on said external edge.