How high can a helicopter fly? The answer depends on various factors. Altitude performance largely relies on the type of rotor system. For instance, conventional helicopters reach heights of 10,000-15,000 feet, while specialized ones can ascend up to 20,000 feet. However, extreme altitude records exist, with helicopters soaring around 42,000 feet. Nonetheless, factors like weight, engine power, and environmental conditions play a significant role in determining a helicopter’s maximum flying height.