Adele Mailangkay et al., International Journal of Advanced Trends in Computer Science and Engineering, 9(2), March - April 2020, 991 – 996 991 ABSTRACT Tourism has been closely connected with the advancement of Information and Communication Technology for over 30 years. In 2014, the travel industry is still the king in the e-commerce industry of Indonesia. But there are some things that hinder Indonesian people using e-commerce. Previous research has subjectively contributed to the design and marketing of the online tourism industry, but no one has done an evaluation directly through user perspective assessment. The absence of a theoretical reference model causes significant ambiguity regarding how to create e-travel sites and evaluates them in practice. In this study, it is proposed and validate an evaluation model of the use of e-commerce in tourism derived from previous research theories linked to the risk theory of the Davis’s Technology Acceptance Model (TAM). The results obtained from this research indicate that the interest of users of travel booking applications online is influenced by several factors, namely: technology, environment, behavior, and e-lifestyle. The purpose of this research is to understand which factors influence the intention of using tourism booking applications online. Key words: attitude, e-lifestyle, social influence, technology acceptance model, tourism online booking. 1. INTRODUCTION The travel industry has been firmly connected with the headway of Information and Communication Technology for more than 30 years. The foundation of the Computer Reservation Systems in 1970, the Global Distribution Systems in the late 1980s and the Internet in the late 1990s has drastically changed operational and key practices in the travel industry. The travel industry at first centered around the utilization of mechanized frameworks (eg, CRS, GDS) to improve proficiency in inward data handling and oversee dissemination. Today, the relevant Internet and Information and Communications Technology are used across all operations, structural, strategic and marketing levels to facilitate global interaction between suppliers, intermediaries and consumers worldwide [1]. The e-tourism business is growing in line with the increasing speed of internet access and is supported by the use of a website which is an effective way to improve communication and engagement between customers and this business [2]. From the results of research conducted by [3] in the tourism industry it is found that research needs to be conducted to find out how ICT can recognize the needs of consumers in purchasing tourism services in general and hospitality products and services in particular. Tourists need information before they travel to help them plan and choose between tourism destination options, and determine how best to achieve their goals while travelling. In addition there is an increasing need for information during the trip as a result of the increasing trend of tourism. Travelers need access to data any place and at whatever point they need to compose their outings. This implies the field of the travel industry is an ideal application field for web and portable processing. Cell phones which run Android and iOS offer new chances to grow continuous programming applications. Cell phones assume a significant job in the travel industry since voyagers for the most part convey cell phones that they get to more than their PCs.Therefore, there is an increasing trend toward mobile-based applications utilizing these operating systems [4]. Growth of Internet utilization globally continues to increase. According to the latest data from We Are Social, the number of active internet users around the world has now reached 3.17 billion. Until 2016, the number of Internet users in Indonesia reached 132,7 million [5]. The growth of internet users is also affecting the growth of social and mobile media users. According to the same report, active social media users have now reached 2.2 billion, while mobile users number around 3.7 billion. Interestingly, the most significant growth is shown by users accessing social media via mobile platforms. Users of this type grew by 23.3 percent in 2015. Meanwhile, Facebook is still the most widely used social media with almost 1.5 billion active users [6]. In view of an overview directed by the Association of Internet Network Providers Indonesia [5] uncovered that the greater part of Indonesia's populace has now been associated with the web. The overview, directed all through 2016, found that 132.7 million Indonesians were associated with the web. The all out populace of Indonesia itself in 2016 is the same Analysis of the factors that affecting Intention to use Tourism Online Booking Adele Mailangkay 1 , Eko Indrajit 2 , Raymond Kosala 3 , Acep Hidayat 4 1 Bina Nusantara University, Indonesia, adele.m@gmail.com 2,3,4 Bina Nusantara University, Indonesia ISSN 2278-3091 Volume 9 No.2, March -April 2020 International Journal of Advanced Trends in Computer Science and Engineering Available Online at http://www.warse.org/IJATCSE/static/pdf/file/ijatcse14922020.pdf https://doi.org/10.30534/ijatcse/2020/14922020