Abstract
This study presents a new approach for measuring operational performance, an important facet of performance missing in the current literature concerned with international airline strategy. International performance assessments of airlines from published financial information are difficult, because (1) most airlines lease a substantial fraction of their aircraft, and (2) different accounting and taxation rules in various countries result in different impacts of leased assets on profit and balance‐sheet information. A possible solution are nonfinancial data. For example, the number of available ton kilometers may reflect aircraft capacity more accurately than flight equipment depreciation. However, different units of measurement introduce new difficulties. Drawing on data from 15 airlines, this study utilizes 'Data Envelopment Analysis' as a technique to analyze and compare operational performance of airlines. The study concludes with an analysis of strategic factors of high profitability and performance in the airline industry.