It is currently not possible to display an OpenSky flight tracking map with an iframe. However, we are working on this feature and will probably release it within the next 2 - 3 weeks! I will let you know as soon as there are any updates.
Would it also be possible to display your own sensodata by iframe?
We are currently working on a feature which will allow you to share the profile of your receiver, making it accessible to public. As soon as we finish implementing the corresponding API interface it will be possible to publicly access data by receiver. Until then it is only possible to have the iframe display data from the whole network.