< PrevNext > 2. Deloitte Share 2015 U.S.-Booked Air Volume: $471.4 million2015 U.S. T&E: $1.4 billionPrincipal Air Suppliers: American, Delta, UnitedPrincipal Hotel Suppliers: Hilton, Marriott, StarwoodPrincipal Car Rental Suppliers: Avis, BudgetPrincipal Online Booking Tool: Sabre GetTherePrincipal Card Supplier: American ExpressConsolidated U.S. TMC: BCD Travel Deloitte U.S. firms increased U.S.-booked air volume by more than $25 million in 2015 and the company is on track for similar growth in 2016. During 2015, it achieved air, lodging and ground savings via sourcing and demand management. The firm reached its highest-ever online adoption, and downloads of its mobile booking app increased steadily. It also added a dedicated traveler experience manager for its 75,000 travelers. Deloitte is introducing point-of-sale tools and online biasing to improve demand management, implementing an automated pre-trip rate and a fare-optimization process and focusing on management reporting. Sixty-five percent of bookings went through the approved booking tool in 2015, and 74 percent required no agent assistance. Deloitte uses an individual bill, central pay card model and an internal expense reporting system customized through SAP.