Yes, it is entirely natural and very common to experience a fear of flying, known as aviophobia. Estimates suggest that up to 40% of the population feels some level of anxiety regarding air travel. Psychologically, this fear is often rooted in a lack of control; unlike driving a car, passengers must trust an unseen pilot and complex machinery. It can also be a combination of other phobias, such as claustrophobia (fear of enclosed spaces) or acrophobia (fear of heights). From an evolutionary standpoint, humans are not "designed" to be 35,000 feet in the air, so the brain's "fight or flight" response can be triggered by unfamiliar sensations like turbulence or engine noises. Despite the statistical reality that flying is the safest form of long-distance travel—with the odds of a fatal accident being roughly 1 in 11 million—the human brain often prioritizes "perceived risk" over "statistical risk," making the fear a very real and understandable experience.