The importance of new ICT technologies for the travel and tourism industry has increased enormously for the last twenty years. Internet, especially, the web applications has revolutionalised the industry. The internet became a new distribution channel as a marketing strategy for the travel and tourism industry. One of the most widespread applications is online booking for accomodation industry. Over the past few years, the use of online booking system has increased globally and this trend is set to continue. The online booking system provides many advantages and some threats for consumers, intermediaries, and accomodation establishments. Accomodotion establishments have to find out the best system in order to sell products and services more efficiently using a combination of traditional and online channels. This paper consists of two main parts: In the first part, in the light of literature, the concept, tools, properties, development, pros and cons of online booking system for accommodation establishments were examined. In the second part of the paper, a survey was realised among 189 hotels in Antalya, where is accepted as the tourism capital of Turkey. A face to face interview method through a semi-structured questionnaire was used in the survey. In general, the reliability of the questionnaire was analyzed. And it was tried to determine traditional and online booking system applications of the hotels. In the statistical evaluation of the survey, descriptive statistics were used to analyse the results. In the final part of the paper, research findings were introduced, interpreted and recommendations were developed.