Abstract: This invention proposes a method for a subscriber to exchange information and transact with a plurality of airline companies for real time search, comparison and transaction activities over mobile networks connecting a subscriber's handset, online infrastructure of airline companies, a service delivery engine and online banking infrastructure. The invention allows a subscriber to view and choose among the menus and options on the subscriber's handset for airline related transactions. The subscriber's choice among the menus and options is communicated to the service delivery engine. A plurality of online infrastructures of airline companies is queried based on the subscriber's choice. The querying, which involves searching, collating and comparing is performed by the service delivery engine, from a plurality of online infrastructures of airline companies.