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Frontier's frequency increases will include the following:

Beginning May 23, 2004

• Denver to/from Chicago from three mainline flights to four

Beginning June 20, 2004

• Denver to/from Tucson from one regional jet (RJ) flight to two
• Denver to/from St. Louis from two mainline flights to three
• Denver to/from Atlanta from two mainline flights to three (previously announced as beginning on July 18, 2004)

"Our customers told us that not only was a low-cost alternative needed in several markets, but more flexibility in the schedule was equally important," said Sean Menke, senior vice president of marketing. "As a result, we have added seven new destinations and over 50 new mainline and RJ flights to our system in the past 90 days. It will be a busy summer for us and we are eager to provide our great product and superior customer service to new and returning passengers."

About Frontier
Currently in its tenth year of operations, Denver-based Frontier Airlines is the second largest jet service carrier at Denver International Airport with a fleet of 39 aircraft and employing approximately 4,100 aviation professionals. Frontier, in conjunction with Frontier JetExpress operated by Horizon Air, operates routes linking our Denver hub to 37 cities in 22 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 five consecutive years. In August 2003, 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.