Why do commercial planes fly at 35,000 feet?

Question

Why do commercial planes fly at 35,000 feet?

In: 13

Answer 1

1:fuel efficiency, at those altitudes due ot how thin the atmosphere is you also experience less drag, letting you fly faster for less effort but still in range that the engines collect enough oxygen to work.

2:at those altitudes you are effectively above any weather patterns that could endanger the plane.

Answer 2

1:fuel efficiency, at those altitudes due ot how thin the atmosphere is you also experience less drag, letting you fly faster for less effort but still in range that the engines collect enough oxygen to work.

2:at those altitudes you are effectively above any weather patterns that could endanger the plane.