Las Vegas-based Allegiant Travel Co., parent of Allegiant Air, reported first-quarter net income of $31.9 million, up 47.1% compared to $21.7 million in the year-ago period.

Total operating revenue was $273 million, up 14.8% year-over-year, while expenses climbed 9.5% to $220.6 million, producing an operating income of $52.37 million, up 44.2% from $36.3 million in the year-ago quarter.

Chairman and CEO Maurice Gallagher noted it was Allegiant’s 41st consecutive profitable quarter.

Allegiant said during the quarter it added eight routes, including two new routes to Provo, Utah and Reno, Nev.

Scheduled traffic during the quarter rose 15.4% to 1.88 billion RPMs on a 17% increase in capacity to 2.09 billion ASMs, producing a load factor of 89.8%, down 1.3 points compared to the first quarter of 2012. Yield lowered 3.5% to 9.58 cents.