Complex sentence: Allegiant Air has also expanded air service between Las Vegas and Santa Maria, increasing to four roundtrip flights each week, and announced new service from Santa Maria to Honolulu, Hawaii scheduled to begin November 17,2012.
Split into simpler sentences: Allegiant Air has also expanded air service between Las Vegas and Santa Maria with four roundtrip flights per week. In addition, in a major announcement, Allegiant unveiled planned new service from Santa Maria to Honolulu, Hawaii scheduled to begin November 17,2012.