Turbulence is an irregular motion of the air resulting from eddies and vertical currents, which causes the aircraft to shake. But while severe turbulence can be dangerous, it’s incredibly rare.
Regardless of whether you're a nervous flier or not, even mild turbulence can be an unsettling mid-flight experience. One minute you're cruising along smoothly, and the next things start to get bumpy.
Curious? Check out this gallery to discover the most turbulent flight routes in the world.