You arrived at the airport thinking made it just in time. As you make way at check-in counter, you are told the flight is overbooked! Someone definitely will not be in that flight this time. Airlines do overbook their scheduled flights to compensate for “no-shows.” This means passengers are sometimes left behind or “bumped” as a consequence. When an over-sale occurs, the Department of Transportation (DOT) requires airlines to ask people who aren’t in a hurry to give up their seats voluntarily – in exchange for compensation. Those passengers bumped against their will are, with a few exceptions should be entitled to compensation.
Here is an infographic of how to avoid being bumped from a flight courtesy of Airhelp blog.