FOR IMMEDIATE RELEASE
 

Contact: Dick Fontaine
Senior VP- Marketing
(712)264-3190
(712)262-1000
 

GREAT LAKES AVIATION TO ADD FIFTH UNITED EXPRESS FLIGHT BETWEEN SHERIDAN, WYOMING AND DENVER BEGINNING APRIL 2, 2000.
 

Spencer, Iowa -- March 6, 2000 -- Great Lakes Aviation, Ltd. (NASDAQ:GLUX) today announced that beginning June 8, 2000, a fifth United Express flight will be added between Sheridan, Wyoming and Denver International Airport.

The new United Express flight will depart Sheridan at 2:16pm daily. The additional return flight to Sheridan will depart Denver at 12:25pm daily and arrive Sheridan at 1:56pm. In addition, beginning in June, extra flights will be added on weekends to accommodate visitors traveling to and from guest ranches in the vicinity of Sheridan. All flights are timed to make convenient connections with more than 450 nonstop flights scheduled by United Airlines and United Express from Denver to more than 120 Destinations.

Sheridan - Denver Schedule (effective April 2 and June 8, 2000) Sheridan to Denver: Flight 6582 (eff. April 2) Departs 6:45am Arrives 8:16am Operates Daily Flight 6588 (eff. April 2) Departs 10:04am Arrives 11:35am Operates Monday - Saturday Flight 6512 (eff. June 8) Departs 11:05am Arrives 12:36pm Operates Weekends Flight 6586 (eff. April 2) Departs 12:15pm Arrives 1:46pm Operates Daily Flight 6584 (eff. June 8) Departs 2:15pm Arrives 3:47pm Operates Daily Flight 6518 (eff. June 8) Departs 3:20pm Arrives 4:51pm Operates Saturdays Flight 6580 (eff. April 2) Departs 4:25pm Arrives 5:56pm Operates Sunday - Friday Flight 6588 (eff. June 8) Departs 5:35pm Arrives 7:06pm Operates Sundays Denver to Sheridan (effective April 2, 2000 and June 8, 2000) Denver to Sheridan: Flight 6587 (eff. April 2) Departs 8:15am Arrives 9:46am Operates Monday - Saturday Flight 6511 (eff. June 8) Departs 9:15am Arrives 10:46am Operates Weekends Flight 6589 (eff. April 2) Departs 10:25am Arrives 11:56am Operates Daily Flight 6583 (eff. June 8) Departs 12:25pm Arrives 1:56pm Operates Daily Flight 6519 (eff. June 8) Departs 1:30pm Arrives 3:01pm Operates Saturdays Flight 6585 (eff. April 2) Departs 2:35pm Arrives 4:06pm Operates Daily Flight 6587 (eff. June 8) Departs 3:40pm Arrives 5:11pm Operates Sundays Flight 6581 (eff. April 2) Departs 7:05pm Arrives 8:36pm Operates Sunday - Friday

Beginning April 2, 2000, Great Lakes Aviation will be providing United Express flights at 61 airports in 14 states with a fleet of eight Embraer-120 Brasilias and 40 Raytheon/Beech 1900D regional airliners.