Passenger growth continues at Alaska

Alaska Airlines, the smallest of the nation's legacy airlines, saw its passenger traffic jump by 15.5 percent last month. That increase, measured in revenue passenger miles (one mile flown by one paying passenger), continues a long trend for Alaska - where traffic is up 10.6 percent for 2010.

The company’s string of on-time arrivals was eroded last month, however. Alaska’s flights were 82.5 percent on time in November, down 5.7 percentage points .

Meanwhile, at Alaska’s regional sister airline, Horizon Air, traffic fell by 2 percent in November, mainly due to schedule and frequency cutbacks that reduced the number of seats available by 6.8 percent. On-time arrivals fell to 70.9 percent from 87.5 percent the year before in November.