Like several of its rivals, air carrier SkyWest's (SKYW) May generally showed marked improvement on a year-over-year basis.

The company's data reported Thursday says that for the month, total passenger boardings came in at 5.3 million, a near-7% increase over the nearly 5 million of May 2012. The growth was higher (at 10% each) in both revenue passenger miles and available seat miles. For May, they rose to 2.7 billion and 3.3 billion, respectively. 

SkyWest's number of departures also saw an increase, advancing 5.5% over the one-year period to reach just more than 125,500 for May. However, the company's load factor (i.e., how full its planes were, on average) was flat on a comparative basis, at 82.4% for both May 2013 and May 2012.

SkyWest is the holding company for two scheduled passenger airline operations and an aircraft leasing company. SkyWest's scheduled passenger airline operations consist of SkyWest Airlines and ExpressJet Airlines. It has a fleet of approximately 758 regional aircraft.

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