The aviation industry contributes substantially to the global climate change, and, thus, airline companies need development of climate-friendly ethics. The content of the codes of conduct of 16 airline companies boasting either the greatest number of daily departures or the largest air fleet (or both) are analyzed. It is established that 25% of these companies prescribe climate-friendly behavior often focusing on emissions. Moreover, many other companies prescribe pro-environmental behavior. The situation seems to be promising, although improvements of the existing corporate ethical prescriptions are necessary. Despite its tentative character and certain limitations, this study permits putting the climate-friendly ethics of airlines on the international agenda. Practically, it is important to add climate-related notions to those codes of conduct where these do not exist and to use successful examples as ethical templates for the entire aviation industry.
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