Latam airlines expects 7.5-9.5 pct operating margin in 2018

SANTIAGO, Jan 4 (Reuters) - Chile-based Latam Airlines said on Thursday it expects a 2018 operating margin of between 7.5 and 9.5 percent, compared with a 2017 margin of between 6 and 8 percent. (Reporting by Antonio De la Jara; Writing by Caroline Stauffer; Editing by Chris Reese)