What's the highest altitude an average helicopter can fly?

The maximum altitude at which a helicopter can fly largely depends on various factors including its design, engine power, weight, and environmental conditions. On average, most helicopters can typically fly up to altitudes between 10,000 to 15,000 feet above sea level.

However, certain specialized helicopters, like high-performance military or rescue helicopters, can reach altitudes significantly higher than the average. Some specialized models have been known to operate effectively at altitudes exceeding 20,000 feet.

The maximum altitude a helicopter can reach is also influenced by factors such as temperature, atmospheric pressure, and the specific engineering of the helicopter. Higher altitudes have thinner air, which affects the helicopter's lift capability due to decreased air density. In extreme conditions or high altitudes, helicopters might struggle to generate enough lift to stay airborne or operate efficiently.

Ultimately, while helicopters have limitations on their maximum operational altitudes, some models are designed for higher altitude capabilities, but these are typically specialized and not part of the general helicopter fleet