MIAMI — Las Vegas-based Allegiant will begin flying to San Juan, Puerto Rico and Trenton, New Jersey, as part of a major expansion announced today.

“We’re very excited to add several new routes and two new cities to the Allegiant route map today,” said Lukas Johnson, Allegiant vice president of network and pricing.

Allegiant’s Trenton service will begin on November 3, with flights to Orlando Sanford and Punta Gorda, followed by St. Petersburg on November 4.

The expansion to Trenton comes just a few weeks after the carrier announced four new routes out of Newark, and it’s the third airport in the mid-Atlantic to join the carrier’s route network. Allegiant comes to compete with Frontier, which to date is the sole carrier offering scheduled services there to ten destinations, half of these in Florida.

Besides Trenton, Allegiant announced four weekly year-round flights between Orlando Sanford and San Juan, Puerto Rico, set to begin on December 14, competing head-to-head with National Airlines on the route.

The airline is also increasing its service on one existing route from Kansas City, Missouri and two existing routes from Akron / Canton, Ohio to Florida. The twice-weekly route from Kansas City International Airport to St. Pete-Clearwater will now operate three times weekly. Routes from Akron-Canton Airport to Punta Gorda Airport and St. Pete-Clearwater will now add a further frequency to operate three times weekly.