The use of the portal is free up to the point where a decision is made to make abooking request of a sightseing tour, a taxi flight or a cargo flight. At this point you pay a booking fee.
The requets are sent to licenced heliopter operators . The owner of helikopter.flights do not take any resposibility regarding if the helicopter company answers the request or not.
However , at time of the booking request , you will receive contact information of the helicopter operators that have received your request.