2015 U.S.-Booked Air Volume: $71 million
Principal Air Suppliers: American, Delta
Principal Car Rental Suppliers: Budget, Hertz
Principal Online Booking Tool: Concur Travel
Principal Card Supplier: Bank of America
BTN estimates Omnicom
Group’s 2015 U.S.-booked air volume increased by 12.7 percent from the previous
year. Revenue decreased 1.2 percent to $15.1 billion, and Omnicom’s U.S.
operations represented 56 percent of that revenue. The marketing, advertising
and corporate communications company has more than 5,000 clients in over 100
countries. As of Dec. 31, it employed 74,900 people worldwide.