Boston, MA 04/09/2014 (wallstreetpr) – In their operational results for the previous year announced on April 8, Southwestern Airlines Co (NYSE:LUV) reported an increase in their traffic, load factor and capacity. The company announced that there has been a growth of 1.6% in the Revenue Passenger Miles (RPM) of 9.6 billion in March 2014 against 9.4 […]