A layover flight, often simply called a layover, is an intermediate stop during your journey when you're traveling between two destinations. Instead of flying directly from point a to point b, you. The main factor impacting your layover length is whether you're making a domestic versus international flight. But before we get to that, there are a few foundational rules that should. A layover in long-distance travel by train or intercity bus is a break that a passenger must take between vehicles in a multi-vehicle trip or while changing the mode of transportation.