Planes typically fly at altitudes between 30,000 and 42,000 feet primarily because the air is thinner at these heights.
Here's a breakdown:
- Thinner Air = Greater Efficiency: According to research, the higher a plane flies, the thinner the air becomes. This reduced air density allows the plane to fly faster and more efficiently.
- Fuel Savings: Thinner air translates to less drag, which means the plane uses less fuel to maintain the speed required for lift. This is a significant factor for airlines looking to reduce operating costs.
In summary, airplanes fly at around 37,000 feet (within the general range of 30,000 to 42,000 feet) to maximize fuel efficiency and speed, which are both enhanced by the thinner air found at these higher altitudes.