First, a light-year is the distance that light travels in a vacuum for a year and is a unit of length, not a unit of time. The distance of one light year is about 9461 10 15 meters.
Secondly, the speed of an aircraft can be affected by a variety of factors, including the type of aircraft, the performance of the engines, the flight altitude, and atmospheric conditions, among others. The fastest of the current man-made vehicles is the Voyager 1 probe, which travels at about 17 kilometers per second. Flying at such a speed, it takes about 1 light year to complete a distance760,000 years. A common airliner travels at about 885 kilometers per hour, and it takes about 122 to fly 1 light-year at such a speed0.33 million years. Even the space shuttle, flying at a speed of 11,260 kilometers per hour, takes about 9It takes 58.48 million years to cover a distance of 1 light year.
These data suggest that at the current state of technology, interstellar travel using conventional aircraft is not possible, as the time span far exceeds what human lifespan and existing technology can support. As a result, scientists are working on more advanced technologies for space navigation, such as nuclear pulse propulsion, ion propulsion, solar sails, and theoretical concepts of faster-than-light travel such as curvature drive, in the hope of significantly reducing the time spent on interplanetary travel in the future.