Spirit Airlines estimates its revenue per available seat mile (RASM) to grow between 18% and 20% in the fourth quarter of this year.
Its cost per available seat mile (CASM) excluding fuel is expected to be between 6.04 cents and 6.09 cents, up 6.6% to 7.5% year-on-year due to a 7% decline in average stage length, said the airline, which is adding growth in the shorter haul markets.
Spirit posted a 5.2% growth in passenger traffic in November, on the back of a 3.8% growth in capacity.
The load factor was up 1.1 percentage point to 85.7%, said the airline.
On a year-to-date basis, passenger traffic grew 21.3% and capacity rose 15.8%.
The passenger load factor increased four percentage points to 85.9%.