Let’s take a look at the skies and see just how high airplanes fly. For most commercial flights, the sweet spot lies between 30,000 and 40,000 feet (12.19 km) above sea level, with 35,000 feet ...

airplanes cruise at thousands of feet above sea level. However, if flying high has such crucial benefits, why don't commercial airliners fly as high as private jets? Additionally, do private jets ...