Planes flying eastward (including northeast and southeast) will fly at odd altitudes (i.e. 35,000 feet) and all other directions will fly at even altitudes.

How high do commercial planes fly? On average, commercial airliners cruise between 31,000 and 42,000 feet (5.9 to 7.2 miles) above sea level.

How high do planes fly? Commercial planes fly between 35,000ft and 42,000ft these days which is around 6.6 miles up in the air. But if they go too high it wouldn’t be good for anyone on board.

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Commercial planes fill the skies carrying passengers and cargo. How fast do they typically fly, and what are the maximum speeds of various aircraft?

But how exactly do airplanes fly? Flight requires two things: thrust and lift. Thrust is the forward motion provided by a propeller or jet engine. (A propeller, by the way, uses the same ...

If you've ever wondered how massive airplanes — which can weigh more than 661 tons — stay up in the air, you're not alone. But it's not magic that keeps airplanes aloft.

1 Commercial planes fly between 35,000 and 42,000 feet Credit: Getty How high do planes fly? Commercial planes fly upwards of 6.6 miles up in the air - which is between 35,000 and 42,000 feet.

1 Commercial planes fly between 35,000 and 42,000 feet Credit: Getty How high do planes fly? Commercial planes fly upwards of 6.6 miles up in the air - which is between 35,000 and 42,000 feet.