This will mostly depend on weath(wind/tubulence mostly). and in these conditions. the skills of the pilot. if perfect weather(for flying) until it runs out of fuel, or become unstablized.
The lift/propulsion method used by a helicopter is capable of producing an overall thrust vector with virtually no horizontal motion. The lift method of planes (fixed wing), requires movement to...
A helicopter moves forwards by the rotors spinning, and being slightly tilted. So if the rotors are flat, it will hover. This is because the air being pushed by the rotors is going straight down, not...