If you are a nervous flyer then one of the worst times to fly could be the very first flight of the day, according to Paul Williams, a Professor of Atmospheric Science in the Department of Meteorology at the University of Reading.
This is because pilots rely on earlier flight paths to navigate past areas of bad turbulence. Therefore, when there is no path to follow pilots consider this "uncharted territory."
This could mean you come across unexpected turbulence.
"So I guess that means you shouldn’t fly first thing in the morning but you also shouldn’t fly in the middle of the afternoon because that’s when the ground is being warmed by the atmosphere and the warmer air is rising and that is pushing on the wings of the plane and causing turbulence too."