Disclosed is a method for cross-selling passenger-oriented travel products from a sponsor company and other travel product providers to users, by normalizing the products and dynamically filtering the products in real-time according to rules defined by the travel product sponsor company. In one of the embodiments, ancillary products from any combination of an airline sponsor company, affiliated airline companies and other travel product providers may be presented to customers in accordance with the sponsor company's preferred product bundling nor package scheme and in coordination with affiliated airlines and other travel product providers as they may be available for a combined product. Other embodiments cross-sell travel products for rail, sea and other ground transportation, accommodation services and providers as well as passenger-oriented ancillary travel product providers such as Wi-Fi and duty-free shopping services.