With the market concerned about capacity growth in the airline sector, Alaska Airlines (ALK) reported September traffic that backs a reduced capacity situation. The airline reported the following traffic numbers:Revenue passenger miles up 7.4%. Available seat miles up 4.2%. Passenger load factor up 2.5 points to 84.1%. For the YTD, Alaska Airlines had capacity growth of 10.7% contributing to the problem in the sector where capacity was growing faster than RPMs that were a solid 10.0%. The company is working on closing the deal with Virgin America (VA). Read Alaska Air: Deal Delays Shall Pass for more info on the merger. Disclosure: No position