Abstract: Systems, methods, and computer program products that determine yield for units of perishable inventory, such a seats on a flight. Yield for future sales of seats is determined based on a weighted average of prices for used tickets and unused tickets for flights that have departure dates in the future. To increase the amount of data on which to base the yield, simulated reservation records are generated based on expected demand for flights during an open reservation window. Proxy tickets are then generated for the simulated reservation records and for reserved but unbooked reservation records. These proxy tickets are stored in a database of proxy tickets that is updated periodically to reflect changes in available inventory, pricing, and reservation context. The prices of the proxy tickets are then used to enrich booked ticket and flown ticket data for calculating yield.

Abstract: An apparatus, program product and method perform availability determinations in an inventory system by adjusting a base yield associated with a travel product based upon a revenue associated with one or more ancillary services associated with the travel product. By doing so, the price and/or availability of the travel product may be modified based upon a revenue impact of the ancillary service(s).