Hello :) is there any working example which demonstrate the usecase of packaging flows in Python packages and then importing them e.g. as a subflow or just import the flow and run it from an other script? Thank you for your support!

There's this repo and this blog post you can use as examples but if you have any specific question about those, let us know. Normally, if you install your custom package in your environment you can import and call it pretty much anywhere (Prefect task, flow or a normal script/function).