Great Lakes Aviation, Ltd. Reports October 2005 Traffic

CHEYENNE, Wyo., Nov. 11 /PRNewswire-FirstCall/ — Great Lakes Aviation, Ltd. (BULLETIN BOARD: GLUX) today announced preliminary passenger traffic results for the month of October.

Scheduled service generated 10,634,000 revenue passenger miles (RPM’s), a 9.2 percent decrease from the same month last year. Available seat miles (ASM’s) decreased 2.1 percent to 23,804,000. As a result, load factor decreased 3.5 points to 44.7 percent. Passengers carried decreased 5.9 percent to 39,836 when compared to October 2004. Preliminary revenue per available seat mile (RASM) increased 17.3 % from 24.86 cents to 29.17 cents.

For the ten months ending October 31, 2005 compared to the same ten month period in 2004, revenue passenger miles (RPM’s) decreased 13.6 percent to 97,875,000 and available seat miles (ASM’s) decreased 14.1 percent to 233,799,000, resulting in a load factor of 41.9 percent for the year 2005 compared to 41.6 percent for the same ten month period in 2004. The company carried 367,795 revenue passengers for the ten month period ending October 31, 2005, a 10.2 percent decrease from the prior year. Preliminary revenue per available seat mile (RASM) increased 15.9% from 22.37 cents to 25.93 cents on a year-over-year basis.

                  OCTOBER 2005 AND YEAR TO DATE STATISTICS                                  October 2005   October 2004     Change   Passengers Enplaned            39,836         42,329          (5.9%)   Revenue Passenger Miles (000)  10,634         11,713          (9.2%)   Available Seat Miles (000)     23,804         24,305          (2.1%)   Load Factor                    44.7%          48.2%           (3.5) points   RASM (cents)                   29.17          24.86            17.3%                                  YTD 2005       YTD 2004         Change   Passengers Enplaned            367,795        409,402         (10.2%)   Revenue Passenger Miles (000)  97,875         113,270         (13.6%)   Available Seat Miles (000)     233,799        272,037         (14.1%)   Load Factor                    41.9%          41.6%            0.3 points   RASM (cents)                   25.93          22.37            15.9%   

Great Lakes is providing scheduled passenger service at 39 airports in ten states with a fleet of Embraer EMB-120 Brasilias and Raytheon/Beech 1900D regional airliners. A total of 190 weekday flights are scheduled at three hubs, with 132 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 International Airport hubs.

Additional information is available on the company web site that may be accessed at http://www.greatlakesav.com/

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.greatlakesav.com/