Southwest Airlines (NYSE:LUV) estimates its passenger revenue per available seat mile was up 4% to 5% in July, compared to July of 2012, according to the airline's traffic report released today.

Southwest carried 3.2% fewer passengers this past July than it did in July 2012, while flying 4.7% fewer flights. For the July-to-July comparison, revenue passenger miles dropped 0.7% on flights that increased in distance by an average 2.6%. Those longer flights increased its available seat miles by 0.6%.

The airline used only 83.5% of its flying capacity, or load factor, for the month, compared to 84.6% for last July.

Year-to-date, Southwest carried 0.9% fewer passengers than it did for the first seven months of 2012 while seeing its revenue passenger miles increase by 1.2%. The airline's load factor for the first seven months of 2013 was 80.1%, compared to 80.5% for 2012.


Fool contributor Dan Radovsky has no position in any stocks mentioned. The Motley Fool recommends Southwest Airlines. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.