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DENVER (July 11, 2005) – Frontier Airlines (Nasdaq: FRNT) today announced that it has filed an application with the U.S. Department of Transportation (DOT) for authorization to expand its Mexico service by offering non-stop service to Acapulco (ACA) from its Denver hub with seasonal operation of as many as two flights per week. Service is planned to begin in December 2005. Acapulco would represent Frontier's seventh Mexican destination from Denver. Frontier already provides service to Cabo San Lucas, Cancun, Mazatlan, Puerto Vallarta, Ixtapa/Zihuatanejo (seasonal), and flights to Cozumel commence December 17th.

"Frontier's new relationship with Apple Vacations and its growing strength in the Mexico market made Acapulco our next logical destination," said Joe Cambron, Director of Planning and Scheduling. "In addition, the support of the Acapulco community has been instrumental in encouraging us to pursue this service."

About Frontier
Currently in its 11th year of operations, Denver-based Frontier Airlines is the second largest jet service carrier at Denver International Airport, employing approximately 4,550 aviation professionals. With 48 aircraft and the youngest Airbus fleet in North America, Frontier offers 24 channels of DIRECTV® service in every seatback along with 33 inches of legroom in an all coach configuration. In conjunction with Frontier JetExpress operated by Horizon Air, Frontier operates routes linking its Denver hub to 48 destinations in 26 states spanning the nation from coast-to-coast and to five cities in Mexico. Frontier's maintenance and engineering department has received the Federal Aviation Administration's highest award, the Diamond Certificate of Excellence, in recognition of 100 percent of its maintenance and engineering employees completing advanced aircraft maintenance training programs, for six consecutive years. In July 2004, Frontier ranked as one of the "Top 10 Domestic Airlines" as determined by readers of Travel + Leisure magazine. Frontier provides capacity information and other operating statistics on its Web site, which may be viewed at www.frontierairlines.com.