1. A computer-implemented method for automatically determining rebate eligibility for booked air travel itineraries comprising: storing booking information associated with a first booked air travel itinerary in an electronic database maintained in a memory of a server, said first booked air travel itinerary booked at a first airfare price; storing booking information associated with subsequently booked air travel itineraries in the electronic database, said subsequently booked air travel itineraries having corresponding airfare prices; comparing the booking information associated with the first booked air travel itinerary with the booking information associated with the subsequently booked air travel itineraries using a product administration application executed by a processor; determining that the first booked air travel itinerary matches one of the subsequently booked air travel itineraries based on a set of matching criteria using the product administration application executed by the processor; determining that the subsequently booked air travel itinerary was booked at a lower airfare price than the first airfare price for the first booked air travel itinerary using the product administration application executed by the processor; and calculating a rebate amount from a price difference between the first airfare price and the lower airfare price associated with the subsequently booked air travel itinerary using the product administration application executed by the processor.