“Have a safe flight.”
Taking this bus in the sky, there’s very little I can control to make it safe or unsafe—y’know, besides trying to yank open a door mid-flight. Don’t do that. It’s really up to the pilots in the cockpit to handle that. Nobody says “have a safe bus ride!” People say “drive safe” and that makes sense; you are the one in control when you’re driving.
Over a decade ago, Kitt and I had this conversation. Since then, we have had our own salutation that we say to each other before we embark on a plane: