CHEYENNE, Wyo., Oct. 7 /PRNewswire-FirstCall/ -- Great Lakes Aviation, Ltd. (OTC:GLUX) (BULLETIN BOARD: GLUX) today announced preliminary passenger traffic results for the month of September 2008. Scheduled service generated 12,877,000 revenue passenger miles (RPM's), a 4.1 percent decrease from the same month last year. Available seat miles (ASM's) increased 21.5 percent to 32,491,000. As a result, load factor decreased 10.6 points to 39.63 percent. Passengers carried decreased 3.7 percent to 47,524 when compared to September 2007. Preliminary revenue per available seat mile (RASM) increased 1.8 percent from 29.84 cents to 30.37 cents. For the nine months ending September 30, 2008 compared to the same nine month period in 2007, revenue passenger miles (RPM's) were relatively flat at 117,092,000 and available seat miles (ASM's) increased 12.4 percent to 264,955,000, resulting in a load factor of 44.19 percent for the year 2008 effecting a decrease in load factor of 5.5 points compared to the same nine month period in 2007. The company carried 435,697 revenue passengers for the nine month period ending September 30, 2008, a 1.2 percent increase from the prior year. Preliminary revenue per available seat mile (RASM) increased 4.7 percent from 29.76 cents to 31.17 cents on a year-over-year basis. SEPTEMBER 2008 AND YEAR TO DATE STATISTICS Sep-08 Sep-07 Change Passengers Enplaned 47,524 49,372 (3.7)% Revenue Passenger Miles (000) 12,877 13,428 (4.1)% Available Seat Miles (000) 32,491 26,745 21.5% Load Factor 39.63% 50.21% (10.6) pts RASM (cents) 30.37 29.84 1.8% YTD 2008 YTD 2007 Change Passengers Enplaned 435,697 430,704 1.2% Revenue Passenger Miles (000) 117,092 117,139 0.0% Available Seat Miles (000) 264,955 235,736 12.4% Load Factor 44.19% 49.69% (5.5) pts RASM (cents) 31.17 29.76 4.7% Great Lakes is providing scheduled passenger service at 58 airports in seventeen states with a fleet of Embraer EMB-120 Brasilias and Raytheon/Beech 1900D regional airliners. Additional information is available at http://www.flygreatlakes.com/ including a current route map at http://www.flygreatlakes.com/route_map/route_map.htm. All scheduled flights are operated under the Great Lakes Airlines marketing identity in conjunction with code-share agreements with United Airlines and/or Frontier Airlines at our Denver, Phoenix, Kansas City, MO and Ontario, CA hubs. The company also operates hubs in Albuquerque, Milwaukee, and St. Louis. 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/route_map/route_map.htm

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