WestJet Airlines Ltd. provided earnings guidance for the first quarter of 2018 and full year 2018. For the first quarter of 2018, the company expects strong traffic and revenue growth to continue and anticipate strong positive year-over-year RASM growth of up 4.5% to 5.5%. For the first quarter of 2018, the company expects CASM, excluding fuel and employee profit share to be up 2% to 3% year-over-year. The company expects capital expenditures to be between $200 million and $220 million. For the full year 2018, the company continues to expect CASM excluding fuel and profit share to be up 1% to 2% year-over-year. For the full year 2018, the company forecasts capital expenditures between $770 million and $790 million with spending related primarily to aircraft deliveries, deposits on future aircraft and overhauls on owned engines.