ABSTRACT In this study, Turkish Airlines Company that is in business in the airline transport sector and profitability analysis of pramminent companies in Amerca, Germany, Canada, Thailand, China and England’s leverage ratio are examined comparativety. Accordance with this purpose, assef protability assef of retails,, return on equity operating profitability and leverage ratios of Turkish airlines companies that are in business in Turksh and the World between 2015-2019 are examined. İn Turkish airlines transport, because of conceled rever ations with the casp at tempt in 2016, flight concellations and instability have had a trouble seriously but in the next years it has showed a good progress by coming trough and has a good place in global market. Turkish airlines companies in Turkish reach to a conditon of competing in the global market and has showed a progress stably.