< PrevNext > 15. ExxonMobil Irving, Texas Share 2017 U.S.-Booked Air Volume: $180 millionConsolidated Global TMC: CWTAs oil prices in 2017 rebounded somewhat from 2016's bottom, so too did oil and gas giant ExxonMobil's financial performance. Still, BTN estimates it spent only about $1 million more on U.S.-booked air travel than it had in 2016. ExxonMobil's sales and other operating revenue increased more than 18 percent in 2017 to $237.1 billion. Selling, general and administrative expenses increased less than 2 percent to nearly $11 billion. The company had about 69,600 employees at the end of 2017, down about 2 percent from a year earlier.