Effective and reliable way of delivering service plays a critical role in helping businessesrnengaged in the area of travel. Ethiopian Airlines is a company working in the area of aviation inrnEthiopia. Booking and selling flight ticket mainly carried out by local and international ticketrnoffices and travel agents around the world. Despite the fact that the airlines currently provides itsrnflight reservation services on its web site ,its usage by its passengers is low specially with localrncustomers as their access to internet is limited. Therefore in this technology dominated era therernis a need to enhance ways of business transaction by providing an additional means ofrnconnecting to customers.rnThe use of mobile technologies are so broadening that people are depending on this technologyrnin their day to day activities to effectively communicate and collaborate with each other whetherrnhandling their personal or business activities. One of the features of mobile technologies thatrnhave come to be broadly used is internet usage, which enables the user to browse forrninformation and be connected to the world using mobile phones. Different mobile basedrnreservation systems are currently being developed globally by different organizations forrndifferent purposes in the business world, airline industry, hotel , tourism etc.rnAfter identifying the available current technologies, we have developed web services that willrnenable customers of the airline use its flight reservation system from their mobile phones whichrnis more convenient and efficient.rnThis project is engaged in exposing the existing flight reservation system at the airlines forrnmobile phone users by developing services without disrupting the existing system. In addition tornreserving/booking flights, the system also enables passengers to check in to flights, check statusrnof flights, and view information concerning flights from mobile phones that has access torninternet.rnKeywords- Mobile technologies, mobile based reservation systems, web services, flightrnreservation system.