Flight delays don’t all come from weather or mechanical breakdowns. Many happen behind the scenes, and some of the most common reasons aren’t always well-known. 1. The crew hit their limit Pilots and flight crews are limited in how many hours they can legally work. If a delay pushes them past that threshold, the flight must wait or swap crews before departing. 2. The flight isn’t cleared yet Even when an aircraft is ready, it can’t depart until air traffic control clears it to go. Flights are re