The mobile like handphone or PDA make the people get convenience to doanything in the world. Maybe the proverb “Time is Money” is true andpeople cannot deny about that. Likewise, this application “M-AirLinesSystem” maybe uphold that proverb too. M-AirLines System application isdesigned and made based on WAP Method. This application’s purpose isgive the convenience to the people, absolutely about time. So, they donot need to come to the travel’s agent or the airport, just to book theairplane’s ticket. They enough to do it with their’s handphone, connect toM-AirLines System’s url, follow the instruction to register be a member ofM-AirLines System and start to book the ticket’s. After booked, in 1x24hours the operator of M-AirLines System will contact and give annotationthat how to pay a ticket’s booking, how to cancel the ticket’s booking, therule of the canceling, etc. This application also give others menu besidesthe booking’s menu, such as the cancelling ticket’s has booked menu, lookthe list of the ticket’s has booked menu, and change the user’s profilemenu.