Abstract: Air transportation is the most important transportation mode in wide archipelagic country like Indonesia, especially for transporting people. It provides fast and safe travel time rather than sea trasportation. So, developing the air transportation industry in Indonesia is very important. One aspect in air transportation industry is airport. Many activities occur in the airport, so that, airport acvitity can be used to reflect the air transportation activity. As part of air transportation development in Indonesia, analyzing the airports activities is very important, so that, the policy makers can make better decision. Basically, Central Bureau of Statistics of Indonesia in collaboration with Ministry of Transportation of Indonesia has published the air transportation statistics. Unfortunately, most of this statistic data is presented in tabular and lacks of deep and broad analysis. In this research, we use computational technology to analyze the Indonesian airports activities. Parameters that are analyzed include: passengers, baggage, cargo and mail. In this research, there are 185 airports in Indonesia that we analyze. The analysis process is started by clustering these activities by using agglomerative method. Then, the clustering result will be analyzed by relating it with the geographic, demographic and economic aspects. In this research, we find that there is positive relationship between air transportation and economy, especially, industrial and tourism activities where the relationship characteristics is reciprocal. Pioneer airports play significant role to establish connectivity between remote area and the main area.