The smoothest ride on an airplane is almost always found in seats over the wings, close to the aircraft's center of gravity. Think of a plane like a seesaw: the ends (the nose and the tail) move up and down the most, while the center (the fulcrum) remains the most stable. If you are a nervous flyer, sitting between the mid-cabin and the front of the wing will minimize the "bouncing" sensation during rough air. Conversely, the rear of the plane is the worst place for turbulence, as the tail tends to "fishtail" and exaggerate movements. Additionally, larger, "wide-body" aircraft (like the Boeing 787 or Airbus A350) generally handle turbulence better than smaller regional jets because their greater mass and advanced wing technology can better absorb atmospheric shifts. Choosing an early morning flight can also help, as thermal activity that causes "bumpy" air usually builds up later in the afternoon.