You ever heard of the curse of being famous? Imagine everyone took a love potion and everyone knows your face. Everyone around you is staring at you and attempts to speak to you, touch you, they might even actually worship the ground you walk on. Not only those that love them are around, but those that want to do harm. Cut her hair and sell it, harm her to boast about it. Who knows?
That's a fucking hell I'd not want to live. That is why they don't fly normal. There's a reason that high profile celebrities don't fly with the rest. It's not necessarily a status thing, but a safety thing. There's a reason the president has secret service and a private jet.