Great Lakes Aviation, Ltd. Reports June Traffic

CHEYENNE, Wyo., July 12 -- Great Lakes Aviation, Ltd. (Nasdaq: GLUX - News) today announced preliminary passenger traffic results for the month of June.

Scheduled service generated 12,479,000 revenue passenger miles (RPM's), a 40.6 percent decrease from the same month last year. Available seat miles (ASM's) decreased 21.9 percent to 29,692,000. As a result, load factor decreased 13 points to 42.0 percent. Passengers carried decreased 44.0 percent compared to June 2001 to 46,274.

For the six months ending June 30, 2002 compared to the same six month period in 2001, revenue passenger miles (RPM's) decreased 41.2 percent to 65,658,000 while available seat miles (ASM's) decreased 24.0 percent to 175,181,000, resulting in a load factor of 37.4 percent for the year 2002 compared to 48.5 percent for the same six month period in 2001. The company carried 249,084 revenue passenger for the six month period ending June 30, 2002, a 45.8 percent decrease on a year over year basis.

Traffic reflects reductions and restructuring of the companies scheduled capacity made following the events of September 11, 2001 with emphasis placed on subsidized Essential Air Service markets. If June Essential Air Service subsides were converted to revenue passenger miles it would have increased RPM(s) by 6,375 and the load factor by 21.5 points.

                       JUNE AND YEAR TO DATE STATISTICS
                                   June 2002       June 2001       Change
    Passengers Enplaned              46,274          82,581       - 44.0%
    Revenue Passenger Miles (000)    12,479          20,999       - 40.6%
    Available Seat Miles (000)       29,692          38,020       - 21.9%
    Load Factor                       42.0%           55.2%   - 13 points
                                   YTD 2002        YTD 2001         Change
    Passengers Enplaned             249,084         459,980       - 45.8%
    Revenue Passenger Miles (000)    65,658         111,702       - 41.2%
    Available Seat Miles (000)      175,181         230,490       - 24.0%
    Load Factor                       37.4%           48.5%  - 9.2 points

As of June 1, 2002, scheduled service was being provided at 48 airports in fifteen states with a fleet of Embraer EMB-120 Brasilias and Raytheon/Beech 1900D regional airliners. A total of 212 weekday flights are scheduled at four hubs, with 174 flights at Denver, 24 flights at Chicago - O'Hare International Airport, 14 flights at Minneapolis/St. Paul, and 6 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.