From global network airlines to low cost carriers, baggage is the top a la carte revenue performer. The latest report from IdeaWorksCompany describes innovations focusing on carry-ons, baggage check-in, and booking path displays. Fees for carry-on bags are the latest development in the global quest for ancillary revenue. Low cost carriers have always led the way here and this encouraged more and more traditional airlines to adopt fees. The 20-page report includes better baggage business examples from these carriers: Aer Lingus, AirAsia, Air France, American, Delta, EasyJet, Frontier, JetBlue, Jetstar, Qantas, Ryanair, Spirit, United, Volaris, and Volotea.