CHEYENNE, Wyo., Oct. 7 /PRNewswire-FirstCall/ -- Great Lakes Aviation, Ltd. (BULLETIN BOARD: GLUX) today announced preliminary passenger traffic results for the month of September 2009.

SEPTEMBER 2009 AND YEAR TO DATE STATISTICS Sep-09 Sep-08 Change Passengers Enplaned 40,832 47,524 (14.1)% Revenue Passenger Miles (000) 11,366 12,877 (11.7)% Available Seat Miles (000) 33,598 32,491 3.4% Load Factor 33.83 39.63% (5.8) pts RASM (cents) 29.30 30.37 (3.5)% YTD 2009 YTD 2008 Change Passengers Enplaned 359,816 435,697 (17.4)% Revenue Passenger Miles (000) 99,192 117,092 (15.3)% Available Seat Miles (000) 303,049 264,955 14.4% Load Factor 32.73% 44.19% (11.5) pts RASM (cents) 28.98 31.17 (7.0)%

Great Lakes is providing scheduled passenger service at 65 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.pdf.

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 Albuquerque, Billings, Denver, Phoenix, Kansas City, MO and Ontario, CA hubs. The company also operates hubs in Milwaukee and St. Louis.

Contact: Michael Matthews, VP Finance/CFO

(307) 432-7000

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/