The aim of the study is to compare airlines by carrying out measurement of efficiency of them obtaining different business models in terms of financial. The other aim is to reveal variables which have influence on score of efficiency. With this regard, airlines are separated into two groups, namely, traditional and low-cost airlines based on their business models. While the measurement of traditional and low-cost airlines efficiency was carried out with Data Envelopment Analysis, factors affecting efficiency scores of airlines were determined by Tobit regression model. According to the results of the study, airlines obtaining low-cost business model are more efficient than airlines obtaining traditional business model in terms of financial. Moreover, large-scale traditional airlines are more efficient than medium-scale traditional airlines. In terms of Tobit regression model, there are different results for two groups.
INTRODUCTIONAir transportation, which appeared in 1990s and firstly was used for military purposes, started to be used for civil purposes with converting military aircraft into passenger aircraft after the Second World War. However, the development of air transportation was affected negatively by strict regulations in its first periods. First of all, with the deregulation movement which occurred in the United States of America in 1978, it can be said that the number of regulations curbing the development of air transportation have started to decrease. In the following years,