SeaTac's Alaska Air Group reported this week its passenger traffic increased by 3.4 percent in January, but that rise failed to keep pace with the airline holding company's capacity increase of 3.9 percent.
For passengers that fractional decrease in the airline holding company's "load factor," the percentage of seats filled with paying passengers, meant that Alaska's planes were slightly less crowded in January than a year earlier.
Alaska Air Group, which owns Alaska Air Lines and Horizon Air, said 82.4 percent of its seats were filled last month compared with 82.7 percent in January 2013.
Both Alaska Air Lines and Horizon Air reported better on-time performance last month. Alaska Airlines said 87.8 percent of its flights arrived on time compared with 86.7 percent on time a year earlier. Horizon reported that 86.8 of its flights arrived on-time compared with 85.1 in the first month of 2013.
The two airlines have been at or near the top of on-time performance results for U.S. airlines for several years.