The 33-year-old rapper reportedly performed The Good Life and Gold Digger over the tannoy system of a Delta Airlines flight from Minneapolis to New York.
But in keeping with his new virtuous persona, he took out all the swear words.
A passenger on the flight told website HollywoodLife.com, 'He was like, 'Yo, this your n***a, Kanye.
'Then he couldn't decide if he wanted to do The Good Life or Gold Digger, so he was like, 'I'll just do a little bit of both.' It was awesome - but I still have no idea how he got into the cockpit.'
But what surprised passengers the most was to see the star queuing with the rest of the public to get off the plane.
The witness added, 'He filed out in line with everyone else, and I thought that was pretty cool. Especially for Kanye.'