They do.
ALL aircraft fly in the Troposphere regardless of distance.
Henri Coandă was the first man to build the JET ENGINED AIR CRAFT.
The stratosphere
Jet planes typically fly in the lower stratosphere. This layer of the atmosphere extends from about 10 to 50 kilometers above the Earth's surface. The lower stratosphere is where commercial jet aircraft operate due to its stable weather conditions and relatively low turbulence levels.
Air
The jet stream is located in the tropopause, which is the boundary between the troposphere and the stratosphere. It is a fast-flowing, narrow air current that moves from west to east at high altitudes.
Jet streams. They are high altitude bands of fast-moving air that flow from west to east in the upper troposphere and lower stratosphere. Jet streams are driven by a combination of temperature gradients, the Earth's rotation, and atmospheric pressure differences.
No. The jet stream is in the upper troposphere and lower stratosphere.
Jet streams are found in the upper troposphere - these are high velocity air flows that follow a curved path moving west-to-east around the globe.Narrow belts of strong winds are called jet streams. Jet streams blow near the top of the troposphere. The thin layer of air that surrounds the Earth is called the atmosphere.
Smaller aircraft fly in the troposphere, the lower level of the atmosphere. Military and passenger jeys fly into the stratosphere (above 8 km or above 26,000 feet) to reduce the air friction they encounter, and sometimes use the jet stream to improve their speed.
Airlines prefer to fly in the troposphere and spy planes or supersonic jets fly in the stratosphere. And also so they can avoid storms. they fly in the stratosphere because it contains the jet stream
The Stratosphere, about 33,ooo Feet or 6.25 Miles up This is genrally (Above the Weather ) regarding commercial craft. Its actually located in the upper troposphere and is a big part of the weather scene. Hope that helped! :)