CHEYENNE, Wyo., Jan. 7 /PRNewswire-FirstCall/ -- Great Lakes Aviation, Ltd. (OTC:GLUX) (BULLETIN BOARD: GLUX) today announced preliminary passenger traffic results for the month of December 2007. Scheduled service generated 12,124,000 revenue passenger miles (RPM's), a 22.2 percent increase from the same month last year. Available seat miles (ASM's) increased 21.5 percent to 25,701,000. As a result, load factor increased 0.3 points to 47.2 percent. Passengers carried increased 21.7 percent to 45,197 when compared to December 2006. Preliminary revenue per available seat mile (RASM) increased 2.8 percent from 29.19 cents to 30.00 cents. For the twelve months ending December 31, 2007 compared to the same twelve month period in 2006, revenue passenger miles (RPM's) increased 18.8 percent to 157,144,000 and available seat miles (ASM's) increased 12.4 percent to 318,524,000, resulting in a load factor of 49.3 percent for the year 2007 effecting an increase in load factor of 2.6 points compared to the same twelve month period in 2006. The company carried 578,773 revenue passengers for the twelve month period ending December 31, 2007, a 14.7 percent increase from the prior year. Preliminary revenue per available seat mile (RASM) was relatively flat on a year-over-year basis. DECEMBER 2007 AND YEAR TO DATE STATISTICS Dec-07 Dec-06 Change Passengers Enplaned 45,197 37,141 21.7% Revenue Passenger Miles (000) 12,124 9,919 22.2% Available Seat Miles (000) 25,701 21,151 21.5% Load Factor 47.2% 46.9% 0.3 pts RASM (cents) 30.00 29.19 2.8% YTD 2007 YTD 2006 Change Passengers Enplaned 578,773 504,666 14.7% Revenue Passenger Miles (000) 157,144 132,252 18.8% Available Seat Miles (000) 318,524 283,272 12.4% Load Factor 49.3% 46.7% 2.6 pts RASM (cents) 29.82 29.86 (0.1%) Great Lakes is providing scheduled passenger service at 44 airports in twelve states with a fleet of Embraer EMB-120 Brasilias and Raytheon/Beech 1900D regional airliners. A total of 232 weekday flights are mostly scheduled at five hubs, with 148 flights at Denver, 8 flights at Albuquerque, 12 flights at Phoenix, 20 flights at St. Louis and 12 flights at Kansas City, MO. All scheduled flights are operated under the Great Lakes Airlines marketing identity in conjunction with code-share agreements with United Airlines and Frontier Airlines at the Denver International Airport and Phoenix Sky Harbor International Airport hubs. Additional information is available on the company web site that may be accessed at http://www.flygreatlakes.com/ Contact: Michael Matthews, VP Finance/CFO (307) 432-7000 DATASOURCE: Great Lakes Aviation, Ltd. CONTACT: Michael Matthews, VP Finance-CFO of Great Lakes Aviation, Ltd., +1-307-432-7000 Web site: http://www.greatlakesav.com/ http://www.flygreatlakes.com/

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