Open Internet Act of 2019 This bill prohibits a provider of broadband internet access service from taking certain actions to restrict content and requires the Federal Communications Commission to enforce such obligations. Specifically, the bill bars a broadband internet provider from (1) blocking lawful content, applications, or services; (2) prohibiting the use of non-harmful devices; and (3) discriminating in transmitting lawful internet traffic. Additionally, a provider is required to disclose accurate and relevant information regarding price, performance, and network management practices sufficient for consumers to make informed choices and for providers of content, applications, services, and devices to develop and market new internet offerings.