How many people get involuntarily bumped from a flight?

Airlines routinely overbook flights based on historical data and algorithms that show a certain percentage of travelers routinely miss their flights for a variety of reasons.With ever-better technology and tracking, the airlines have become more and more accurate with the overbooking algorithms allowing them to fill every seat while minimizing bumping. In 2015, a mere 0.09 percent of passengers were denied boarding due to oversold flights. This comes to about 552,000 people, or 1,512 people per day for all flights within the U.S. There are two types of bumping or, in airline parlance, denied boarding. More than 90% who were denied boarding did so as volunteers. The remaining less-than-10% – 46,000 people total or 126 passengers per day – were involuntarily bumped. That is, the airline asked for volunteers and getting none, or not enough, were forced to select people to be bumped.