Air transportation service is given by the complementary services of private companies like airline, airport, airport ground handling companies, and public institutions like customs, security, and border health administration. The companies in the process must communicate and interact each other and themselves fast and correct in order to present the planned air services. In this study, the tools and the usage places of these tools in the process of air transportation companies' operations are examined for Atatürk airport which is selected as the largest airport in Turkey. In the first part of this study, a literature review is given about the airline operation process used for flight planning, monitoring, and ground operation processes in the air transportation companies. In the second part,