"Love the solitude in a plane cabin. Makes me feel extremely cosy and restful. Need to catch up on some much needed sleep. Love you all," SRK posted on Twitter.
However, he was later surprised when his "Happy New Year" co-star Boman Irani disappeared on the plane.
"My extremely distinguished friend Boman is a class act. It's the first time I have lost someone on a plane. Nobody could find him!!! How?" he posted on the micro-blogging site.
Shah Rukh did not elaborate where Boman had disappeared to.
Directed by Farah Khan, "Happy New Year" also stars Deepika Padukone and Abhishek Bachchan.