Social media are a new and active medium that communicate with the target groups of brands. Through social media networks, the brands call out to the target groups in where and when they want and the brands are building more intimate relationship with them. The purpose of study is to provide an assessment of how brands use tdikleri ve habereilişkin yeni sorun alanlarının doğup doğmadığı saptanmaya çalışılmıştırhe social media on Twitter, a popular social media medium. For this purpose, in the theoretical phase of study, first, the social media concept, its features and environments have been addressed. Then, the concept of brand communication, its importance and the function of social media on brand communication have been discussed. In the method phase of the study, Türk Hava Yolları, Pegasus Airlines and Anadolu Jet, the most active airline companies and followed by users on Twitter in Turkey, have been designated as exemplary brands. The tweets published in the quarterly spring semester from March 1, 2016 to May 31, 2016 of the specified brands have been examined within the content analysis. The results of the research show that the most followed brand on Twitter is "Turkish Airlines", all three airline companies are sharing messages with the aim of promoting more sales, the messages shared by Turkish Airlines are mostly in the form of direct tweet sending, the messages shared by Pegasus Airlines and Anadolu Jet contain URLs and the three brands are predominantly adopting one-way communication. When findings are generally evaluated, ıt can be said that social media plays an important role in terms of brand communication.