The Ballymena actor, who plays an air marshall in new action thriller Non-Stop, admits he has done quite a few naughty things in mid-air - but nothing tops one sex session.
He said: "I joined the mile high club many years ago. Lufthansa."
But he insists he has never attempted to sneak a quick smoke in an aircraft toilet, adding: "I am an ex-smoker, I have never done that.
"But I have smoked on aeroplanes when you were allowed to smoke."