Cruising altitude isn't a fixed number — many factors go into computing this for every flight — but there is a good reason why airplanes typically fly at 35,000 feet. Planes generally fly at higher ...

An curved arrow pointing right. Most commercial airplanes fly between 35,000 to 42,000 feet high, but there are a number of factors that deem this range optimal. Here are the reasons and science ...

An curved arrow pointing right. Most commercial airplanes fly between 35,000 to 42,000 feet high, but there are a number of factors that deem this range optimal. Here are the reasons and science ...