Great Lakes Aviation, Ltd. announced preliminary passenger traffic results for the month and year to date ended December 2014. For the month, the company reported revenue passenger miles of 3,121,000 against 9,644,000 a year ago. Available seat miles were 6,893,000 against 19,729,000 a year ago. Load factor was 45.3% against 48.9% a year ago. RASM was 65.79 cents against 39.28 cents a year ago.

For the year to date, the company reported revenue passenger miles of 54,293,000 against 133,933,000 a year ago. Available seat miles were 118,996,000 against 334,426,000 a year ago. Load factor was 45.6% against 40.1% a year ago. RASM was 47.55 cents against 34.35 cents a year ago.