DALLAS (January 24, 2013)—Dallas-based Southwest Airlines Co. reported Thursday that fourth-quarter earnings fell by nearly half on higher spending for fuel, labor and maintenance, but the airline's revenue is rising because the average fare is almost $8 higher than a year ago.

Southwest said Thursday that net income was $78 million, or 11 cents per share, down from $152 million, or 20 cents per share, a year earlier.

Excluding items such as fuel contracts, the profit would have been 9 cents per share, beating the 7-cent forecast among analysts surveyed by FactSet.

Revenue was up 1.6 percent, but expenses rose 3.1 percent.