Spirit Airlines, Inc. revised operating guidance for the fourth quarter of 2018. Total revenue per available seat mile for the fourth quarter 2018 is estimated to be 9.59 cents, up approximately 11.4% year over year. This is better than revised guidance provided on November 26, 2018 due to modestly stronger peak yields. Available seat miles for the fourth quarter 2018 were up 16.2% year over year versus previous guidance of up 15.0% due to higher than expected completion factor. The Company had excellent operational reliability during the fourth quarter, achieving a record quarterly completion factor of 99.6%.