Why Do Airplanes Need To Fly So High? - Science ABC

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A balance between operating costs and fuel efficiency is achieved somewhere around 35,000 feet, which is why commercial airplanes usually fly at that altitude.

Most commercial airplanes cruise at an altitude of nearly 35,000 feet—around 6.62 miles (10,600 meters) in the air! For people who think the top of a skyscraper is tall, flying more than 6 miles off the ground is incredible!

The thing is, what’s wrong with flying a few hundred meters above the ground, so long as the plane clears all ground structures like communication towers and skylines?

Well, first of all, the height at which most planes fly is not some arbitrarily chosen number. There are very good reasons why planes fly at precise heights in the sky. Let’s look into the science of why planes fly so high.

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Why Do Airplanes Need To Fly So High?

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