Interisland carrier go! boosted both its load factor and passenger count in January compared with the same month a year earlier.

go!, a subsidiary of Arizona-based Mesa Air Group Inc., said its planes were 64.6 percent full in January, up from 58.4 percent full a year earlier. The airline carried 58,216 passengers in January, up 33 percent from 43,763 passengers in January 2007.

"In spite of falling tourism and a difficult economic environment, we are extremely pleased with the significant increase in passengers year over year and the continued support for go! from the people of Hawaii," said Jonathan Ornstein, Mesa Air Group chairman and chief executive officer.