How fast a helicopter can fly may depend on the type of helicopter. The average helicopter can fly anywhere between 200-350 miles per hour. On average a full tank of gas can get a helicopter about 600 miles away from its starting point. They are a much louder choice of transportation than an airplane but for shorter distances or sight seeing they can be a great alternative. Many major cities sell helicopter tours for tourists or as a romantic night flight for those trying to impress.