30,000 TO 35,OOO FEET ==Addendum== The above answer applies to modern commercial type jets. Smaller business jets can easily cruise in the 45,000 to 50,000 feet range. The Concord cruised at around 55,000 feet with a maximum cruise altitude of 60,000 feet. Military jets, of course, operate at various altitudes depending on design mission.
35000
They usually fly at an altitude of 30,000 to 35,000 feet, to avoid bad weather.
Most prop planes fly any where from 1,000-5,000 ft. Airliners usually fly from 10,000-20,000 ft. Military jets fly at pretty much any altitude
33000 feet
jets
Because the higher the altitude, the thinner the air, so the less work is needed by the engines. Sometimes there is also strong tailwinds which will speed it up. Also, this burns less fuel.
Military fighter jets typically fly at altitudes ranging from 20,000 to 50,000 feet, depending on their mission and capabilities. Some advanced fighters can reach even higher altitudes, up to 65,000 feet or more, particularly during high-altitude reconnaissance missions. The specific altitude can vary based on factors such as the aircraft type, operational requirements, and airspace regulations.
No
about 357 km or 222 miles depending on the visual acuity.
Military aircrafts fly the same height as the commercial airplanes do. The cruising altitude maybe 30000 feet to 45000 feet. Planes like SR-71 have gone upto the maximum of 85,000 feet.
No, it is not recommended to fly if you have altitude sickness as it can worsen your symptoms and lead to complications.
Helicopters fly somewhat close to the ground. They fly near the troposphere. They fly at a lower altitude than planes.