Reporting of sustainability has gained an increasing importance over the past years and companies have begun to take greater responsibility for society. One major reason why sustainability has been recognized is because of the increased climate change in the world. The airline industry, which is seen as an important part of today's tourism, have had a major impact on the social, economic and natural surroundings, which is an contributing factor to today's climate change and air pollution. Airlines can be divided into two categories, low-cost airlines and traditional airlines. These two airlines separates each other by their business ideas and strategies, where low-cost airlines target price-sensitive travelers while traditional airlines are known to have a larger price advantage over the low-cost airlines. Different strategies can lead to separation of the sustainability reports, as companies work in different ways, which has consequences for how they report their sustainability. This is a problem as companies take different social responsibilities.

The purpose of this study is to describe and analyze how sustainability reporting differs between airlines that use different business strategies, by comparing two low-cost airlines with two traditional airlines. The authors first examined already existing theory that has been collected and compared to the companies' sustainability reports.

The conclusions of this study have shown big differences between low-cost airlines and traditional airlines reporting of sustainability. An important reason for this is based on the airlines' strategies, where the low-cost airlines apply a low-cost strategy and try to gain competitive advantages by having the industry's lowest costs, while the traditional airlines have a strategy to make the flight as comfortable as possible for the travelers, where high quality and service is important priorities for creating customer satisfaction. The different strategies between the airlines mean that they prioritize different things, which are reflected in their sustainability reports. All airlines have shown clear initiatives to achieve a more sustainable world, but in this study, the traditional airlines have always done a little extra in all the three perspectives.