5 . If the plane sits for 3 hours, you can hop off
Suppose you have an important meeting to attend and you’re in a rush, if you’re kept waiting for too long then you can just get off the flight. A lengthy delay in the US, either upon arrival or departure, DOT states that the airline cannot keep you in the plane for more than 3 hours on a domestic flight or 4 hours on an international flight if you want to get off. The best part is that the airline is obligated to get that food and water cart running down the aisle after two hours of delay.