MIAMI — Frontier Airlines is adding service to Miami, Florida, with nonstop flights to Philadelphia, New York La Guardia, and Denver beginning December 20, 2014. The ultra-low cost carrier (ULCC) will also add nonstop service to Chicago O’Hare International Airport on March 2, 2015. In total, the four destinations will be served with 38 flights per week, with frequencies as follow:

  • Philadelphia – 1 Flight / Day
  • New York La Guardia – 2 Flights / Day
  • Denver – 10 Flights / Week
  • Chicago O’Hare – 1 Flight / Day

Aircraft and schedules for the new flights have not yet been released.

Frontier Airlines’ launch of service to Miami comes on the heels of expansion in major markets such as Cleveland, Cincinnati, Houston, Phoenix, and Washington Dulles. Frontier also announced a major expansion from Philadelphia Tuesday, funding the growth with major reductions in frequency on routes from its largest operation at Denver.

Year over year, Frontier is reducing frequency from Denver to Nashville, Cozumel, Dallas Fort Worth, Des Moines, Detroit, Fargo, Spokane (eliminated), Indianapolis, Las Vegas, Los Angeles, New York La Guardia (eliminated), Chicago Midway (eliminated), Minneapolis St. Paul, Oklahoma City, Omaha, Portland, Phoenix, San Diego, Seattle, San Francisco, Salt Lake City, ad St. Louis. Airways estimates that Frontier will reduce frequency at Denver by close to 220 weekly departures, downsizing capacity by more than 25%.

In concert with expansion at Miami, Frontier will eliminate its nonstop flight between Denver and Fort Lauderdale, though it will preserve nonstop service to five other destinations from Fort Lauderdale. Frontier’s expansion at Miami also pre-empts in small part, a potential expansion by rival ULCC Spirit Airlines. Spirit currently does not serve Miami, but has its largest focus city at Fort Lauderdale. Airways reported last year that Spirit is weighing incentives from Miami International Airport to move its entire focus city to Miami. Spirit and Frontier have increasingly brushed up against each other in their quest for profitable opportunities, and Miami looks to be no different.