How High Do Airplanes Fly?

Answer

Generally, standard-flight commercial jets fly approximately 8.5 to 10.6 kilometres above sea level. Travelling at higher altitudes and/or speeds, limits oxygen supply. However, most modern military aircraft like the recent edition of the U2 spy plane can reach a height of approximately 27.4 kilometres above sea level. Another military jet plane, the Stealth Bomber, flies as high as 15.2 kilometres in the air.
Q&A Related to "How High Do Airplanes Fly?"
A commercial jet normally flies approximately twenty-eight to thirty-five thousand feet in the air. Military planes fly significantly higher, at fifty thousand feet with some spy
http://answers.ask.com/Vehicles/Aviation/how_high_...
Normal passenger airlines fly at around 30,000 ft. Some military aircrafts go up to 100,000 ft.
http://www.kgbanswers.com/how-high-up-in-the-air-d...
Typical jet liners fly around 25,000 to 45,000 feet. Miltary fighters get up to 80,000 feet, some specialty planes such as The U2 spy plane and the SR-71 are thought to go as high
http://wiki.answers.com/Q/What_is_the_highest_an_a...
Multiple factors. The thin air at altitude generates less drag and the airplane can go faster. Jet engines are also more efficient at high altitude; for an explanation on that, see
http://www.quora.com/Flying/Why-do-airplanes-fly-a...
Explore this Topic
A commercial jet normally flies approximately twenty-eight to thirty-five thousand feet in the air. Military planes fly significantly higher, at fifty thousand ...
A commercial jet normally flies approximately twenty-eight to thirty-five thousand feet in the air. Military planes fly significantly higher, at fifty thousand ...
A commercial jet normally flies approximately twenty-eight to thirty-five thousand feet in the air. Military planes fly significantly higher, at fifty thousand ...
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