FOR IMMEDIATE RELEASE         Contact:         Dave Thomas, VP of Marketing and Planning

               (307) 432-7000

Great Lakes Airlines To Cease Service Between Denver, Colorado and Norfolk, Nebraska

CHEYENNE, Wyo., June 17, 2004 � Great Lakes Aviation, Ltd. (OTC Bulletin Board: GLUX.OB � news) today announced that it will cease its scheduled air service between Denver, Colorado and Norfolk, Nebraska Effective July 10, 2004.   This decision was made based on the United States of America Department of Transportation decision to terminate the eligibility of Norfolk, Nebraska, to receive subsidized air service.

Passengers booked on Great Lakes flights in or out of Norfolk after this date should contact their travel agent, or the Great Lakes Reservations Center at (800) 554-5111 for reaccommodation options.

�Norfolk has been a part of our system for a long time, and it will not be pleasant to leave�, said Dave Thomas, VP of Marketing and Planning of Great Lakes. �However, as an economic matter traffic numbers will not support scheduled air service, and we are forced to make this difficult decision.�

Great Lakes is providing scheduled passenger service at 37 airports in 10 states with a fleet of Embraer EMB-120 Brasilia and Raytheon/Beech 1900D Regional Airliners.  A total of 174 weekday flights are scheduled at three hubs, with 164 flights at Denver, 4 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 Frontier Airlines and United Airlines at their Denver hub.

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