Smart phones and tablets have played an important role in our lives as many of the mobile users spend their time using mobile applications. As the relationship between the tourism industry and technology grows, Smartphones continue make it easier to carry all the resources you need along your travels. Mobile users prefer comparing mobile travel applications to browsing the web or checking travel agencies ‘web sites, especially while looking for hotels or flights. The main aims of this study are determining users' opinions regarding Mobile travel Applications. Identifying the relationship between demographic characteristics and customer loyalty and evaluating how customers view travel agencies websites. A survey was conducted to determine the views of a randomly selected sample of 228 of domestic tourists in Egypt and international tourists in relation to their mobile travel applications use. The results revealed that mobile travel users are increasing and the users' buying behavior show that they are loyal to mobile travel application.