Flight Frequency Determination

An attempt has been made to determine the flight frequency between two cities. The economic effects achieved by the earner using a particular flight frequency level is measured through the average load factor value. The level of service is measured by the absolute value of the average time difference between the actual and desired time of departure. It is shown that this time difference can be approximately expressed only in the function of flight frequency, without regard to the times of departure in the course of the day and that the error which occurs is not considerable. The interval in which the flight frequency should be located is also determined, as well as the corresponding interval of the average time difference between the actual and desired time of departure in order to achieve a profitable business. A numerical example illustrates the route Belgrade‐Zagreb in Yugoslavia.