What movie is about a group of friends that are attacked while on a plane?

I remember seeing a trailer some time ago where these friends are on a plan and there is something in the clouds that then starts attacking the plane. Please help, I am usually really good with movie stuff but this is escaping me and its driving me crazy.What movie is about a group of friends that are attacked while on a plane?AltitudeWhat movie is about a group of friends that are attacked while on a plane?1