Great Lakes Aviation, Ltd. Reports June 2007 Traffic

CHEYENNE, Wyo., July 6 /PRNewswire-FirstCall/ — Great Lakes Aviation, Ltd. (BULLETIN BOARD: GLUX) today announced preliminary passenger traffic results for the month of June 2007.

Scheduled service generated 14,515,000 revenue passenger miles (RPM’s), a 20.1 percent increase from the same month last year. Available seat miles (ASM’s) increased 9.9 percent to 26,567,000. As a result, load factor increased 4.6 points to 54.64 percent. Passengers carried increased 13.5 percent to 52,764 when compared to June 2006. Preliminary revenue per available seat mile (RASM) decreased 0.1 percent from 32.40 cents to 32.18 cents.

For the six months ending June 30, 2007 compared to the same six month period in 2006, revenue passenger miles (RPM’s) increased 16.7 percent to 73,609,000 and available seat miles (ASM’s) increased 6.2 percent to 150,827,000, resulting in a load factor of 48.80 percent for the year 2007 effecting an increase in load factor of 4.4 points compared to the same six month period in 2006. The company carried 270,968 revenue passengers for the six month period ending June 30, 2007, a 12.6 percent increase from the prior year. Preliminary revenue per available seat mile (RASM) increased 0.9 percent from 28.96 cents to 29.21 cents on a year-over-year basis.

                     JUNE 2007 AND YEAR TO DATE STATISTICS                                      June-07        June-06        Change   Passengers Enplaned                52,764         46,468        13.5%   Revenue Passenger Miles (000)      14,515         12,090        20.1%   Available Seat Miles (000)         26,567         24,170         9.9%   Load Factor                         54.64%         50.02%        4.6 pts   RASM (cents)                        32.18          32.40        (0.1%)                                      YTD 2007       YTD 2006       Change   Passengers Enplaned                270,968        240,567       12.6%   Revenue Passenger Miles (000)       73,609         63,074       16.7%   Available Seat Miles (000)         150,827        141,955        6.2%   Load Factor                         48.80%         44.43%        4.4pts   RASM (cents)                        29.21          28.96         0.9%   

Great Lakes is providing scheduled passenger service at 39 airports in nine states with a fleet of Embraer EMB-120 Brasilias and Raytheon/Beech 1900D regional airliners. A total of 208 weekday flights are scheduled at three hubs, with 148 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

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/