Comment by inickt

You can already AirPlay from an iOS device to a Mac– doing this on a plane is a bit trickier because of the networking setup though. I think I have managed to successfully do it once by either 1. doing some sort of tethering/creating a local wifi network on my Mac 2. connecting both devices to the in flight wifi

I use AirPlay to my Mac (and external monitors) even at home since I can watch the 4K feed from apps, which isn't available for some services if you use the web browser (cough HBO cough),