< PrevNext > 22. Citi New York Share 2018 U.S.-Booked Air Volume: $140 millionConsolidated U.S. TMC: CWTBanking and financial giant Citi’s 2018 U.S.-booked air volume increased in 2018, according to a BTN estimate. The company’s 2018 net revenue increased less than 1 percent to $72.9 billion. Citi at the end of 2018 had about 204,000 employees, about 5,000 fewer than one year prior. Citi’s 2018 air travel generated 149,600 metric tons of carbon dioxide equivalent emissions, 1 percent lower than in 2017. Its 2018 business travel by rail generated 227 such metric tons, up from 209 in 2017. The company encourages employees to use remote conferencing technologies in lieu of travel whenever possible. If travel must occur, Citi encourages employees to group trips together to manage costs and reduce trips and to consider train travel when feasible.