The problem of financial stability of a modern enterprise predestines a long-term development of state. The long-term development strategy-making concepts, binding to each member state, have been legislated in the European Union. A sustainable development is a balanced and socially responsible economic development subject to preservation of the environment and resources for the benefit of future generations. A national sustainable development plan prior to 2020 is required for each EU country. Under the development priorities situation typical to Baltic States, featuring a relative deficiency of mineral resources with some possibilities of development of high-end technologies, transit industry may be deemed the main priority. The enterprise financial stability concept is the main objective, regarded as a mandatory condition for ensuring a long-term and sustainable development as exemplified by the two renowned air carriers. The methods of scientific research most frequently applied in economics domain have been used: monographic, comparative, hierarchical and quantitative methods of financial ratios.