US Airways Group (NYSE: LCC) released its Q4 and full-year 2012 results, showing its highest-ever net profit for the latter period. On a GAAP basis for fiscal 2012, the company netted $637 million ($3.28 per diluted share), or nearly nine times 2011's figure of $71 million ($0.44 diluted EPS). Operating revenues were $13.8 billion, or 6% higher than in 2011.

The quarterly net profit also saw a sizable jump, to $37 million ($0.23 diluted EPS) from Q4 2011's $18 million ($0.11). Operating revenue advanced over the same time frame; it was $3.3 billion in this most recent quarter, against $3.2 billion in the year-ago period.

The company attributed the improvements to "a strong demand environment and record passenger yields." In a follow-up conference call, company President Scott Kirby said US Airways expects 2%-4% growth in unit revenue on a year-over-year basis for both February and March.