CHEYENNE, Wyo., Oct. 9 /PRNewswire-FirstCall/ -- Great Lakes Aviation, Ltd. (OTC:GLUX) (BULLETIN BOARD: GLUX) today announced preliminary passenger traffic results for the month of September 2006. Scheduled service generated 11,165,000 revenue passenger miles (RPM's), a 9.6 percent increase from the same month last year. Available seat miles (ASM's) decreased 4.7 percent to 22,867,000. As a result, load factor increased 6.4 points to 48.82 percent. Passengers carried increased 12.4 percent to 43,430 when compared to September 2005. Preliminary revenue per available seat mile (RASM) increased 13.6 percent from 27.32 cents to 31.04 cents. For the nine months ending September 30, 2006 compared to the same nine month period in 2005, revenue passenger miles (RPM's) increased 15.5 percent to 98,808,000 and available seat miles (ASM's) increased 2.6 percent to 215,379,000, resulting in a load factor of 45.88 percent for the year 2006 effecting an increase in load factor of 4.3 points compared to the same nine month period in 2005. The company carried 378,803 revenue passengers for the nine month period ending September 30, 2006, a 15.5 percent increase from the prior year. Preliminary revenue per available seat mile (RASM) increased 16.5 percent from 25.56 cents to 29.77 cents on a year-over-year basis. SEPTEMBER 2006 AND YEAR TO DATE STATISTICS Sep-06 Sep-05 Change Passengers Enplaned 43,430 38,637 12.4% Revenue Passenger Miles (000) 11,165 10,187 9.6% Available Seat Miles (000) 22,867 24,002 (4.7)% Load Factor 48.82% 42.44% 6.4 pts RASM (cents) 31.04 27.32 13.6% YTD 2006 YTD 2005 Change Passengers Enplaned 378,803 327,959 15.5% Revenue Passenger Miles (000) 98,808 87,241 13.3% Available Seat Miles (000) 215,379 209,995 2.6% Load Factor 45.88% 41.54% 4.3 pts RASM (cents) 29.77 25.56 16.5% Great Lakes is providing scheduled passenger service at 38 airports in nine states with a fleet of Embraer EMB-120 Brasilias and Raytheon/Beech 1900D regional airliners. A total of 192 weekday flights are scheduled at three hubs, with 144 flights at Denver, 8 flights at Albuquerque, and 20 flights at Phoenix. 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.flygreatlakes.com/

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