Frontier Airlines (Nasdaq: FRNT ) and Great Lakes Aviation, Ltd. (Nasdaq: GLUX ) today announced they have entered into a codeshare agreement, which will allow Frontier to market and sell Great Lakes-operated flights. The agreement will ultimately expand Frontier`s service into 37 small to mid-size markets currently served by Great Lakes throughout Colorado, Wyoming, Nebraska, South Dakota, North Dakota, Kansas, New Mexico, Utah, Arizona and Texas. The codeshare agreement will initially place the Frontier Airlines F9 designator code on flights in seven Great Lakes markets, including Casper, WY; Cody, WY; Gillette, WY; Cheyenne, WY; Amarillo, TX; Santa Fe, NM and Hayden, CO. Customers desiring seamless travel between these markets and Frontier`s route system may begin booking flights during the latter part of May for travel beginning July 9. The airlines plan to expand the codeshare to many additional Great Lakes markets during the month of September.

“This is exciting news for Frontier and Great Lakes, as it allows both airlines the opportunity to expand our route systems and introduce our service to new customers,” said Frontier Airlines President Sam Addoms. “Our new agreement with Great Lakes is another step in the right direction towards promoting and encouraging competition in the airline industry, and we look forward to bringing Frontier`s affordable fares and growing scope of service to the Great Lakes communities.”

“We are thrilled to announce our codeshare agreement with Frontier and believe it will bring additional travel choices to the cities we serve and help position Great Lakes to improve the profitability of its Denver hub,” said Great Lakes President Douglas Voss. “We look forward to continuing to build a strong relationship with the people of Frontier and providing their customers with new travel choices. In addition, we believe our customers will be better served by having more choices when planning their travel.”

“Frontier Airlines and Great Lakes Aviation, to their credit, are committed to taking positive steps to expand service in small towns by reaching an important codesharing agreement, and in the end, their efforts are going to benefit consumers while contributing to a stronger, more reliable rural air system in Wyoming,” U.S. Senator Craig Thomas (R-WY) said. “That, combined with additional choices from DIA, will make a difference.”

U.S. Senator Mike Enzi (R-WY) said, “Travel to and from Wyoming should not be a `you can`t get there from here` proposition. Thanks to the codeshare agreement between Great Lakes Aviation and Frontier Airlines, Wyomingites will have greater access to affordable and frequent flights. That is good for our economy and I will continue to work with other state leaders and the airlines to improve air service.”

U.S. Representative Barbara Cubin (R-WY) said, “I am thrilled that Great Lakes Aviation and Frontier Airlines have finalized a codesharing agreement to offer increased air travel options to Wyoming citizens. Not only will this agreement provide a shot of healthy competition into western air markets, it will help create a more business-friendly travel climate in our State and potentially reduce fares for all Wyoming travelers.

To make a reservation, customers may contact Frontier Airlines at 1-800-4321-FLY, visit Frontier`s Web site at http://www.frontierairlines.com or by consult their professional travel agent.

In conjunction with this codeshare agreement, members of Frontier Airlines` frequent flyer program EarlyReturns may earn and redeem miles on Great Lakes when an itinerary includes a Frontier flight.

About Frontier Airlines: Denver-based Frontier Airlines serves 22 cities coast to coast with a fleet of 25 Boeing 737 jets and employs approximately 2,400 aviation professionals. The airline is the second largest jet service carrier of Denver International Airport with an average of 112 daily systemwide departures and arrivals. Frontier provides capacity and other data and industry comparisons on its Web site, which may be viewed at http://www.frontierairlines.com .

About Great Lakes Aviation, LTD: Great Lakes Aviation provides scheduled air service at 51 airports in 13 states with a fleet of 40 Raytheon/Beech 1900D and eight Embrear EMB-120 Brasilia regional airliners and employs approximately 1,300 aviation professionals. A total of 274 weekday flights are scheduled at three hubs, with 216 flights at Denver, 44 flights at Chicago-O`Hare and 14 flights at Minneapolis/St. Paul. In addition, the company operates four weekday round trip flights between Springfield, Illinois and Chicago-Meigs Field. All flights are operated under the marketing identity Great Lakes Airlines.

For Frontier Airlines: Tracey Kelly
(720) 374-4504
E-mail: [email protected]

For Great Lakes Aviation, Ltd.: Dick Fontaine, Senior Vice President, Marketing (307) 432-7020

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