A jet plate for directing a flow of air into a cooking cavity of an oven may comprise a body configured to be disposed along a top wall or a bottom wall of the cooking cavity, and one or more structured air inlets that are openings through the body. Each of the structured air inlets comprises holes and slots that are alternatingly arranged and serially connected. The structured air inlets enable air to be introduced into the cooking cavity in a structured formation to improve cooking speed and cooking efficiency. In addition, structured air inlets in a jet plate may be configured in various manners to address unevenness in the distribution of air flow within the cooking cavity.