EVERY seasoned business traveller knows that airlines overbook flights. Most of the time, a few people are no-shows, or can't make it through security in time to make their flights. But inevitably, there are times when airlines have to bump passengers from an overbooked flight.hat compensation will be increasing to $650-$1300 this August. Remember, you're only owed cash if you're bumped involuntarily—folks who agree to fly later in exchange for a voucher only get what the airline offered them.