As of January 5, according to Frontier Airlines, commercial planes from Trenton-Mercer Airport (TTN) will fly to just four destinations, all in Florida. Frontier, the only commercial carrier serving TTN, plans to resume service to six other destinations in the spring.

“The changes are being made based on supply and demand,” stated Frontier Corporate Communications Representative Jim Faulkner. “There’s a greater demand to travel to warm destinations in the winter so that’s where Frontier’s focus is.”

The January flights will be increased to a once-a-day schedule for Fort Lauderdale, Fort Myers, and West Palm Beach and twice daily for Orlando. Flights to Atlanta, Chicago, Raleigh-Durham, Charlotte, Tampa, St. Augustine, and Detroit will be suspended. Flights to Minneapolis-St. Paul will be discontinued entirely.

Mercer County Executive Brian Hughes described this change as a “seasonal adjustment.” “We went through a cutback similar to this last year,” he said, “and they brought all of the flights back. We’re used to them cutting back.”

Mr. Hughes pointed out that the new Frontier schedule will reduce flights from the airport from about 60 per week to about 40, with Frontier moving one of their three Trenton-based planes back to the Denver headquarters. He expressed confidence, however, that Frontier would restore the third plane and all the suspended flights, except for Minneapolis, in March. “They go to places where they can fill seats in their planes and you’ve got to respect that,” he added.

Mr. Faulkner echoed Mr. Hughes’s optimism concerning future prospects for TTN and its relationship with Frontier Airlines. “TTN has been a good airport for Frontier. Matter of fact, we have a flight attendant base there to help cover flights all along the east coast.”

Frontier, along with other low-cost carriers, has recently been under fire for a number of cost-cutting measures, ranging from adding extra seats and tightening legroom, charging extra for carry-on luggage and snacks, low on-time flight percentages, and relatively high numbers of passenger complaints, but Mr. Hughes emphasized the competitiveness of the commercial airline business and the adaptability required to succeed.

For the 12-month period ending in March 2015, Frontier Airlines served 394,815 passengers at TTN, an increase of 105 percent over the previous year, with a 98 percent increase in revenue, according to the Federal Aviation Administration (FAA).