Hello,
If you want your flow to render in Lightning runtime in your Visualforce page, embed the flow Aura component to your Visualforce page.
1. Create a Lightning app that declares a dependency on the lightning:flow component.
2. Add the Lightning Components for Visualforce JavaScript library to your Visualforce page using the <apex:includeLightning/> component.
3. In the Visualforce page, reference the dependency app.
4. Write a JavaScript function that creates the component on the page using $Lightning.createComponent().