< PrevNext > 22. BCG Boston Share 2017 U.S.-Booked Air Volume: $146 millionConsolidated U.S. TMC: Amex GBTBTN estimates that U.S.-booked air travel spend at privately held management consulting firm BCG increased about 8 percent in 2017. BCG reported that 2017 sales increased 11 percent to $6.3 billion. Employees increased from 14,000 in 2016 to 16,000 last year, and the firm claims offices in more than 90 cities in 50 countries. All BCG travelers have access to a company mobile itinerary management app, designed by BCG and based on Amadeus' mobile platform.