< PrevNext > 30. Hewlett Packard Enterprise Palo Alto, Calif. Share 2016 U.S.-Booked Air Volume: $131 millionPrincipal Air Suppliers: United, American, DeltaPrincipal Hotel Suppliers: Marriott, HiltonPrincipal Car Rental Suppliers: Avis, BudgetPrincipal Online Booking Tool: ConcurPrincipal Card Supplier: American Express, CitiPrincipal Expense Supplier: Proprietary toolConsolidated Global TMC: Carlson Wagonlit TravelHewlett Packard Enterprise made significant policy changes focused on cost savings in 2016. The company cut down its premium traveler list, implemented ride-sharing and eliminated black car and taxi use. HPE exceeded savings targets associated with Cvent's online events management software and introduced an automated dashboard for travelers. U.S.-booked air volume decreased 17 percent.For 2017, HPE plans to drive compliance with its strategic meetings management program and implement a corporate card program with Citi. The travel program also will support some HPE restructuring. HPE spun off Enterprise Services and merged it with CSC in April to create DXC Technology. And Micro Focus' acquisition of HPE's software segment is expected to close this year. The transactions follow Hewlett-Packard's 2015 split into Hewlett Packard Enterprise and HP Inc.For HPE, 83 percent of air spend booked in the U.S. went through approved online tools in 2016. Last year, 59 percent of U.S.-booked air volume was for domestic travel. HPE has 90,000 travelers, and the company reported $50 billion in revenue for 2016.