If your flight has ever run behind schedule, you may have heard the pilot say they will 'make up time' while flying.
According to several pilots, this isn't often true, particularly on shorter flights.
On a Reddit thread asking those in the airline industry to share information passengers should know, one pilot replied: "there is very little we can actually do to 'make-up time'.
"The longer the flight, the more we can do, but still, we're talking 5-10 minutes, not an hour," they wrote.
American pilot Jim Richards added: "the very short answer is yes, we do. But we probably won't."