Well, it depends which airplane we are talking about. General aviation airplanes like the Cessna 172 normally fly below 10,000 feet unless there is a supply of oxygen for all on board. Jet liners on the other hand can fly up to 45000 feet. The supersonic Concorde could fly up to 60,000 feet. However, the vast majority of commercial airliners cruise between 30,000 and 35,000 feet.
Better fuel economy. The air is thinner at higher altitudes.
1000 - 500 ft
There is no certain cruising altitude for a commercial airline. it depends on where they are flying and how long they fly. most airlines fly above 10,000 ft. the max altitude is around 41,000 ft.
it's the slowest you can fly without dropping out of the sky. It's different from plane to plane, altitude, amount of load etc.
An average plane flies between 5 to 10 km above the surface of the earth. Planes cannot fly below or above the altitude. After this altitude there is not much air.
They usually fly in the stratosphere. That is from 25,000 feet to 40,000 feet. This may differ from palne to plane. A plane like Cessna flies very close to the ground at about 9000 feet.
Zero, if the jet plane is on the ground, otherwise it depends at what altitude the plane happens to be flying. Cruising altitude for many passenger airliners is around five to seven miles. Military aircraft often fly at much higher altitudes.
Helicopters fly at low altitude.Passenger planes climb to high altitude.Birds use low altitude height to fly from tree to housetop.Military cargo planes pass over my house at low altitude.
When flying from the east to west you should fly at an even number altitude to the nearest thousand. But when flying using Visual Flight Rules you should fly at an even altitude to the nearest thousand plus 500 feet.
One of the main reasons is to conserve fuel. Airplanes can fly at any altitude and speed. However, airplanes generally tend to fly at high altitude to conserve fuel. This makes the plane more efficient and keeps the operating cost down. Of course, an airplane can not always fly at max altitude at every flight. It may have too much weight or the distance it travels may be too short. So there is always a trade-off as to how they will fly the route.
The ceiling height of a Cessna 172 is 13,500 ft. The optimum altitude for maximum range is 12,000 ft.
There is no fixed distance. It could fly as far as it's fuel and engine oil allow.If I recall correctly the longest recorded such flight was by a US Navy P2V Neptune patrol bomber that flew from Australia to Columbus Ohio in 1946. -An astonishing distance of 11,235 miles that took 55 hours.