Low-cost carrier Spirit Airlines has almost doubled its operating profit to $97.8 million in the third quarter, from $49.7 million a year ago.
The carrier's operating revenues rose 33.4% to $457 million and expenses increased 22.6% to $359 million.
Spirit's net income grew to $61.1 million in the third quarter, up from $30.9 million in the same period last year.
Passenger traffic increased 27% and capacity grew 22.4% during the quarter, while the load factor rose 3.2 percentage points to 89.1%.
The airline's operating revenue per available seat mile grew 8.9% to 12.55 cents and adjusted cost per available seat mile excluding fuel fell 2.7% to 5.86 cents.
Spirit closed the quarter with 51 aircraft, up from 42 aircraft a year ago.